O&M Manual for Karanja Dam January 2020
GOVERNMENT OF KARNATAKA Karanja Project
Operation and Maintenance Manual for Karanja Dam State of Karnataka Doc. No. CDSO_O&M_KA06MH0181_karanja_DAM KAWRD_01_v2.0 January 2020
Central Water Commission Ministry of Water Resources, River Development & Ganga Rejuvenation Government of India
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O&M Manual for Karanja Dam January 2020
Front Cover Photograph: Downstream view of Karanja Dam during rehabilitation works carried out under the Dam Rehabilitation & Improvement Project (DRIP). The Scope of Work entailed Reaming of porous holes of drainage gallery, Re- construction of dry sone rock toe and improvement to v notch, fixing rain water drain and scour filling on downstream right and left side, security aspects/ lighting/ barbed fencing, strengthening and arresting of leakage of right bank and left bank sluice gate, improvement to existing road adjacent to bund left and right of downstream and strengthening and improvements of gates and other electromechanical components of Karanja Dam.
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O&M Manual for Karanja Dam January 2020
Operation and Maintenance Manual for Karanja Dam Prepared by the Dam Safety Rehabilitation Directorate with Assistance from KARNATKA NEERAVRI NIGAM LIMITED
(A Government of Karnataka undertaking) State of Karnataka
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O&M Manual for Karanja Dam January 2020
KARANATAKA NEERAVARI NIGAMA LIMITED (A Government of Karnataka Enterprises)
This operation and maintenance Manual for Karanja Dam in no way restricts the dam owner in digressing from her/ this responsibilities. This state Dam safety Organization or the central water commission cannot be held responsible for the efficacy of this manual developed based on documents provided by the dam owner. The Dam owner and her /his operators must exercise appropriate discretion when implementing and use of the operation and maintenance manual for managing the working of the dam and appurtenant structures.
The manual was developed for the purpose of organizing and managing the operation, inspection and maintenance of the dam for reducing risk and optimizing performance of the dam
Chief Engineer KNNL IP Zone Kalburgi (Karnataka) Ph-08472-256561 Email: [email protected]
Copy right @2018 Department of Water Resources. All rights reserved. This publication is copy right and may not be resold or reproduced in any manner without the prior consent of DoWR.
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O&M Manual for Karanja Dam January 2020
KARANATAKA NEERAVARI NIGAMA LIMITED (A Government of Karnataka Enterprises) State Dam Safety Organization PREFACE This Operation and Maintenance (O&M) Manual for Karanja Project is a detailed set of written descriptions of step-by-step procedures for ensuring that the dam is safely operated and properly maintained. Timely inspection and maintenance are necessary for the safe functioning of the dam and continued productive use of the dam and reservoir. The term “O&M” as employed in this manual includes operation, inspection, maintenance and repair of dam components, replacement of equipment and appurtenant structures, as required. This manual is provided to assist the dam owner in management of their project in a safe and efficient manner. The Dam Safety Bill, 2010, introduced in the Lok Sabha on August 30, 2010, and subsequently referred to the Parliamentary Standing Committee on Water Resources for examination, prompted the need for updated procedures for dam owners to follow during day-to-day, 24/7 operation of their respective dams. The draft Dam Safety Bill requires State Dam Safety Organizations (SDSO) to keep perpetual vigilance, carry out inspections regularly, and monitor the operation and maintenance of all dams in order to ensure their safe functioning. Where a SDSO does not exist, the National Committee on Dam Safety acting through the Central Dam Safety Organisation is required to carry out these activities. This manual was prepared following the Guidelines for preparing O&M Manuals for dams (Doc. No. CDSO_GUD_DS_O3_v1.0) published by CWC in the year 2018 under DRIP.
Director, State Project Management Unit, DRIP, Bengaluru.
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O&M Manual for Karanja Dam January 2020
Team Members Involved in Preparing this O&M Manual.
Sri. Jagannath Halinge Chief Engineer, Reviewer KNNL, IP Zone Kalaburgi Karnataka. Sri. Jagannath Halinge Superintending Engineer, KNNL, I.P Reviewer Circle Kalaburgi. Phabba Ravikiran Executive Engineer, KNNL Prepared original Draft KPC Division No 1, Bidar. Sri Shivakumar Swamy Assistant Executive Engineer, KNNL KP Dam Sub Division No-3 halhalli Assisted in availing all Sri Anandkumar Assistant Engineer, KNNL, necessary information. K.P.Dam, Sub-Division, No-3 Halhalli.
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O&M Manual for Karanja Dam January 2020
TABLE OF CONTENTS
MESSAGE ...... 4 FORWARD ...... 5 LIST OF APPENDICES ...... 12 LIST OF TABLES ...... 12 LIST OF FIGURES ...... 13
CHAPTER-1: GENERAL INFORMATION ...... 15 1.1 Introduction ...... 15 1.2 Purpose, Location & Description of Karanja Dam ...... 15 1.3 Background Details of the Project ...... 16 1.3.1 Dam Site Location ...... 16 1.3.2 Karanja Reservoir Planning ...... 18 1.3.3 Main Design Features & Components of Karanja Dam ...... 22 1.4 Salient Features of Karanja Dam ...... 23 1.5 Assignment of Responsibility ...... 28 1.5.1 Roles & Responsibilities of the AEE & AE during Monsoon ...... 29 1.5.2 Roles & Responsibilities of the SE & EE during Monsoon ...... 30 1.5.3 Roles & Responsibilities of the Chief Engineer during Monsoon ...... 31 1.6 Collection & Reporting of Dam & Reservoir Data ...... 31 1.7 Public & Project Staff – Health & Safety ...... 32 1.7.1 Restricted Area...... 32 1.7.2 Details of the Security Arrangements at Karanja Dam Site ...... 32 1.8 Staff Position, Communication & Warning System ...... 34 1.8.1 Schedule of General Duties for Project Engineers ...... 35 1.8.2 Electro-Mechanical Inspections/ Checks ...... 37 1.9 Distribution of Operation & Maintenance Manual ...... 40 1.10 Supporting Documents & Reference Material ...... 41
CHAPTER-2: PROJECT OPERATION ...... 42 2.1 Basic Data ...... 42 2.1.1 Area Capacity Curve ...... 42 2.1.2 Design Flood & Features Related to Safety ...... 56 2.2 Flood Management at Karanja Reservoir ...... 58 2.2.1 Gate Operation ...... 58 2.2.2 Rule Curve ...... 64
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O&M Manual for Karanja Dam January 2020
2.2.3 Flood Peaks of Different Return Periods ...... 66 2.2.4 Gate operation Procedures for Normal flow conditions ...... 66 2.2.5 Inflow Forecasting ...... 66 2.2.6 Methodology of flood Regulation at Karanja Dam ...... 68 2.2.6.1 Inflow Computation ...... 68 2.2.6.2 Examples of Inflow Computation ...... 68 2.2.7 Computation procedure for Required Radial Crest Gate Opening ...... 69 2.2.8 Summary of Flood Regulation Procedure...... 98 2.3 Operation of Radial Crest Gates of Karanja Dam ...... 98 2.3.1 Brief Description ...... 98 2.3.2 Radial Crest Gates – Technical Data ...... 99 2.3.3 Salient Features ...... 99 2.4 Operating Instructions ...... 100 2.4.1 Checklist before Operation ...... 101 2.4.2 Electricity operated Hoisting Arrangements for Radial Crest Gates ...... 101 2.5 Reservoir Level ...... 102 2.5.1 River Outlet Works ...... 102 2.6 Description ...... 102 2.6.1 River Sluice Gates...... 102 2.6.2 Operation...... 102 2.6.2.1 General ...... 102 2.6.2.2 Restrictions ...... 102 2.6.2.3 Mechanical ...... 102 2.6.3 References ...... 103 2.6.3.1 Drawings ...... 103 2.7 Access Roads ...... 113 2.8 Record Keepings ...... 113
CHAPTER-3: PROJECT INSPECTIONS ...... 114 3.1 Types of Inspections ...... 114 3.1.1 Comprehensive Evaluation Inspections ...... 114 3.1.2 Scheduled Inspections ...... 115 3.1.3 Special (Unscheduled) Inspections ...... 115 3.1.4 Informal Inspections ...... 116 3.1.5 Pre-&-Post-Monsoon Checklist and Example of Report Proformas ...... 116
CHAPTER-4: PROJECT MAINTENANCE ...... 125 4.1 Maintenance Priorities ...... 125 4.1.1 Immediate Maintenance ...... 125 4.1.2 Preventive Maintenance ...... 126
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O&M Manual for Karanja Dam January 2020
4.1.2.1 Condition Based Maintenance ...... 126 4.1.2.2 Routine Maintenance ...... 126 4.2 Procedures for Routine Maintenance ...... 127 4.2.1 Earthwork ...... 127 4.2.2 Masonry concrete Dams & spillways ...... 131 4.2.3 River Sluices ...... 132 4.2.4 Gates & Hoist Equipments...... 132 4.2.5 Electrically Operated Fixed Hoists ...... 135 4.3 Maintenance of Electrical Components of Fixed Rope Drum Hoists ...... 137 4.4 Surface Preparation & Painting Works ...... 139 4.5 Electrical System ...... 143 4.6 Maintenance of Gate Components ...... 144 4.7 Access Road ...... 144 4.8 General Cleaning ...... 145 4.9 Materials & Establishment requirement during Monsoon Period ...... 145 4.10 General List of Maintenance Record ...... 145 4.11 Preparation of O&M Budget ...... 145 4.12 Maintenance Records ...... 149
CHAPTER-5: INSTRUMENTATION & MONITORING ...... 150 5.1 Dam Instrumentation ...... 150 5.1.1 General Information ...... 150 5.1.2 Embedded Instruments of Concrete/ Masonry ...... 150 5.1.3 Instruments Embedded in the Karanja Dam ...... 151 5.1.4 Seismological Observation ...... 151
CHAPTER-6: PREVIOUS REHABILITATION EFFORTS ...... 153
CHAPTER-7: UPDATING THE MANUAL ...... 155
CHAPTER-8: GATE OPERATION SCHEDULE OF SPILLWAY FOR KARANJA DAM ...... 196
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O&M Manual for Karanja Dam January 2020
LIST OF TABLES
Table-1: The estimated yield & utilization details of the Karanja Project ...... 15 Table-2: Overall Responsibilities for Karanja Dam ...... 28 Table-3: Roles & Responsibilities of AEE & AE ...... 29 Table-4: Roles & Responsibilities of SE & EE ...... 30 Table-5: Roles & Responsibilities of the Chief Engineer ...... 31 Table-6: Example Proforma for recording Flow Data ...... 32 Table-7: Distribution of O&M Manual and Revisions...... 40 Table-8: Elevation - Capacity Table for Karanja Reservoir ...... 43 Table-9: The year 2002-2003 in Karanja Dam Rate of change of reservoir storage .....54 Table-10: Details of Peak floods for different sub catchments ...... 56 Table-11: Details Showing the flood absorption capacity ...... 58 Table-12: The recorded inflow into the reservoir during monsoon period ...... 59 Table-13: Rule curve table of Karanja Dam showing month and storage capacity ...... 65 Table-14: Return Flow Peak Flows vs. Return Period Data ...... 66 Table-15: Monthly recommended water releases to the irrigation and drinking water supply……… ...... 66 Table-16: Discharges over spillway v/s gate openings above gate seat...... 69 Table-17: Calibration chart for discharge through canal Sluice gates of Karanja Dam .103 Table-18: O&M BUDGET COSTS (ANNUAL) ...... 146 Table-19: Location and Extents of Structural Members ...... 150 Table-20: Embedded Instruments...... 150 Table-21: Embankment Instruments ...... 151 Table-22: Frequency of Readings for Karanja Dam ...... 152 Table-23: Evidence of Distress ...... 160
LIST OF APPENDICES
Appendix-1: BASIC DRAWINGS OF KARANJA DAM ...... 156 Appendix-2: KEY ELEMENTS OF THE EAP ...... 158 Appendix-3: MATERIAL REQUIRED FOR MAINTENANCE DURING MONSOON ...... 168 Appendix-4: SCHEDULED OR UNSCHEDULED DAM SAFETY INSPECTION FORM ...... 168 Appendix-5: GLOSSARY ...... 189
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O&M Manual for Karanja Dam January 2020
LIST OF FIGURES
Figure-1: Dam site location ...... 17 Figure-2: Godavari Basin Map ...... 19 Figure-3: Overhead Image of Karanja Dam ...... 20 Figure-4: Karanja reservoir Catchment area map with sub catchments ...... 21 Figure-5: Karanja layout Map...... 33 Figure-6: Organization Chart ...... 34 Figure-7: Area Capacity Curve ...... 52 Figure-8: Elevation curve of water area curve...... 53 Figure-9: For the year 2002-2003 rate of change of reservoir storage curve ...... 55 Figure-10: Peak flood (PMF) Hydrograph ...... 57 Figure-11: Inflow detail 1990 to 2018-19...... 63 Figure-12: Rule curve of Karanja Dam ...... 65 Figure-13: Radial Gate line diagram ...... 104 Figure-14: Painting to Stoplog Elements & Radial Gates ...... 105 Figure-15: Reaming of Body and Foundation Holes in Drainage Gallery ...... 106 Figure-16: Lighting Arrangement to Drainage Gallery and Painting to Radial Gates ....107 Figure-17: Painting to Gantry Crane, Painting & Servicing to Sluice Gate and Cleaning of Seepage Well ...... 108 Figure-18: Sand blasting & Painting to Stoplog Elements, Turning on D/s...... 109 Figure-19: SDBC Road and DSRP Team inspection ...... 111 Figure-20: Servicing to Sluice Gate...... 112
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O&M Manual for Karanja Dam January 2020
Acronyms used in this publication are as follows: BIS Bureau of Indian Standards CDSO Central Dam Safety Organisation CWC Central Water Commission SDSO State Dam Safety Organisation O&M Operation and Maintenance DRIP Dam Rehabilitation and Improvement Project DSRP Dam Safety Review Panel EAP Emergency Action Plan Global Positioning System (uses GPRS for data transmission like GPS browsing the web) FRL Full Reservoir Level MWL Maximum Water Level MDDL Minimum Draw Down Level DSL Dead Storage Level HM works Hydro-Mechanical works DG set Diesel Generator set PC Personal Computer TMC Thousand-Million M3
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O&M Manual for Karanja Dam January 2020
Chapter 1. - General Information
1.1 Introduction This document represents a detailed Operation and Maintenance (O&M) Manual for Karanja Dam, Karnataka, providing written descriptions of procedures for ensuring that the dam operates safely and is kept in a good condition by periodic inspections, repairs, maintenance in a sustainable manner. Timely maintenance is important for the continued safe functioning and productive use of the dam and reservoir. The Manual has been prepared primarily for the dam operation’s staff and their supervisors who are assigned the responsibility for the physical operations and maintenance of the dam. It contains, as a minimum, all information and instructions necessary for them to perform their allotted tasks in a safe manner. In addition to instructions for dam operations staff, the Manual includes all necessary instructions for other staff directly or indirectly involved in operating and maintaining the dam. It is essential that the Manual or a copy of the Manual along with supporting data including the atlas of all drawings and manufacturer’s technical documents is available at site for ready reference. 1.2 Purpose, Location &Description of Karanja Dam The scope of the project as cleared by the Central Water Commission is to provide irrigation facility to 29227.00 Ha of land by utilizing 7.691 TMC of water. However, due to change in topography and urbanization in last 30 years, the targeted irrigation potential could not be achieved. As such in achieving the ultimate potential out of the project, tail end distributary in RBC, LBC, under Karanja Lift Irrigation Scheme, Distributary-1(A) and Atiwal Lift Irrigation Scheme is proposed to be implemented to utilize the allocated water without altering the approved scope of the project. Now, the project estimate is revised based on the schedule of rates of 2008-09 as per the instructions of Monitoring (South) Directorate, CWC, New Delhi for Rs.832.00 crores. Again, the project estimate is revised based on the schedule of rate of 2012-13 total Rs 638.18 Crores. Table 1 - The estimated yield & utilization details of the Karanja Project
75% Dependable 7.691 TMC. considering 30 years of inflow from 1969-70 Yield at dam site to 1988-89 Total utilisation a) Utilisation by direct atchkat of 2521 Hac by gravity irrigation under Karanja Project including res- ervoir evaporation. Left Bank canal of 31 Km b) Utilisation by direct atchkat of 19976.00 Hactor by gravity irrigation under Karanja Project including reservoir evaporation. Right Bank canal of 131 Km c) Utilisation under upstream side of Karanja projects. Karanja Lift irrigation canal 2280.00 Hactor d) Utilistion under upstream side of Karanja lift irrigation under D-1A canal 1593 Hactor. e) c) Utilisation under upstream side of Karanja projects. Atiwal Lift irrigation canal 2857 Hactor f) 1.0053 TMC– Drinking water needs of Bidar,Bhalki, Humnabd ,Chutguppa Town, and Bidar Taluka 14 villages Humnabad Taluka 5 villages. Total 7.691 TMC or 217.66 M Cum.
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O&M Manual for Karanja Dam January 2020
1.3 Background Details of the Project Introduction: Karanja River is a tributary to Manjra River which joins the Godavari River. It takes its origin near Kohir village in Andhra Pradesh (Now Telangana) joins to Manjara rive at Narda Sangam village in Bhalki Taluka.Dist Bidar.
Brief History of Karanja Dam:
The River: Karanja River is a tributary to Karaja river (Manjra river) which joins the Godavari River. It takes its origin near Kohir village in Andhra Pradesh (Now Telangana), the Manjra river join at Narda Sangam village in Bhalki Taluka.Dist Bidar. Rain Fall: The average annual weighted rainfall in Karanja basin is of the order of 1042 mm and is not well distributed. SCOPE OF THE PROJECT: The scope of the project as cleared by the Central Water Commission is to provide irrigation facility to 38614 Ha of land by utilizing 9.27 TMC of water. However, due to change in topography and urbanization in last 30 years, the targeted irrigation potential could not be achieved. As such in achieving the ultimate potential out of the project, tail end distributary in RBC, Distributary-1(A) under Karanja Lift Irrigation Scheme and Atiwal Lift Irrigation Scheme is proposed to be implemented to utilize the allocated water without altering the approved scope of the project. Now, the project estimate is revised based on the schedule of rates of 2008-09 as per the instructions of Monitoring (South) Directorate, CWC, New Delhi for Rs.832.00 crores.Again the project estimate is revised based on the schedule of rate of 2012-13 to the Rs 638.18 Crores and is under submission.
1.3.1 Dam site Location:
Karanja Dam is situated at Latitude 17083’ North, and Longitude 77019’ East,The nearest Location in Bylhalli village Bhalki Taluk ,Bidar District,and Bidar to Humnabad 24 Km (NH51 Biar to Sriranga pattan Road) in Karnataka. The Rajugandi Airport Hydrabad nearer to the sire at a distance 150 KM respectively by Road. The nearest Airport is Hydrabad.
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O&M Manual for Karanja Dam January 2020
Figure 1-Dam site Location Latitude 17 0 83’ N Longitude 770 19’ N Location in Bylhalli village Bhalki Taluk Bidar District in Karnataka
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O&M Manual for Karanja Dam January 2020
1.3.2 Karanja Reservoir Planning HYDROLOGY: i) Catchment area: The catchment area of the river at the proposed dam site is 2028.38 Sq.Kms (782 Sq. Miles) out of which 727.29 Sq Km (284.10 Sq miles) i.e., 36.38% lies in Andhra Pradesh and the remaining in Karnataka State. The catchment area is hilly and murmur at ridges with cultivated lands in the valley portions. During rains, it is seen that there is sufficient flow in the nalas and streams joining Karanja River. ii) Yield: The Maximun and minimum annual virgin yields at Karanja dam site from derived run off data for the year 1984-89 Gross Storage 217.66 Mcum (7.691 Tmc). The Live storage 207.65 Mcum (7.316 Tmc) and Dead storage of 10.61 Mcum (0.375 Tmc) respectively 75% dependable yield at this site is worked out be 162.45 Mcum(5.737 Tmc) The total requirement of water for proposed cropping pattern is worked out based on climatological approach, for field irrigation requirement efficiency of 70% of net irrigation requirement in considered Cross irrigation requirement is worked out considering 70% efficiency of yield irrigation requirement. Evaporation losses have been taken as 82” per year. The total utilization works cut to 10.09 TMC including evaporation losses. iii) DEAD STORAGE:- The dead storage is kept at R.L. 575.15 M. so as to get the requisite command on both banks. The dead storage capacity is 0.375 Tmc iv)LIVE CAPACITY:-The Live Storage capacity at FRL is 7.316 Tmc, The existing F.R.L. of reservoir is R.L. 584.15 M. 1)Design Flood Review (As approved by CWC) a) Original inflow Design Peak Flood (M3/S): flood discharge of 13280.60(M3/sec). (4.69 Lakhs cusecs), a)1 Original Outflow (M3/S): 7078.14(M3/S):2.50 Lakhs Cusecs b) Date of Latest Review (DD/MM/YYYY) : 08/04/April 2015 c) Revised inflow Design Peak Flood (M3/S): 18827.86 or 6.65 Lakhs cusecs c)1 Revised Original Outflow (M3/S): 7078.14(M3/S):2.50 Lakhs Cusecs V) M.W.L:-the M.W.L works out to be at R.L 587.15. vi) FREE BOARD:- As explained in the previous chapter, the free board works out to 5.85 M, above F.R.L. as per I.S. 10636.88 and the top of dam at R.L. 589.15M vii) WATER SPREAD: - The water spread area at F.R.L. of 584.15M is 8673 Hectares (21422.31 Acres) Due flood routing of proposed flood discharge of 4,69,000 cusecs. The additional area likely to be inundated between R.L. 584.15 M to 587.15 M is above 1606 Hectares (3966.82 acre )
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O&M Manual for Karanja Dam January 2020
Figure 2-Godavari Basin
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O&M Manual for Karanja Dam January 2020
Figure 3 - Overhead Image of Karanja Dam
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O&M Manual for Karanja Dam January 2020
Figure-4: Karanja reservoir Catchment area map with sub catchments
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O&M Manual for Karanja Dam January 2020
1.3.3 Main Design Features and Components of Karanja Dam: i) Components: The dam consists of a spillway portion for a length of 107.50 m in the center of the river gorge, with spillway, two non-overflow masonry sections dam on either side and an earth dam. The total length of the dam including all sections is 3480-m. ii) Earthen Dam: The earthen dam has a maximum height of 20.70-m from the foundation stripped level and consists of zonal sections with impermeable hearting zone and semi-permeable casing zone on upstream and downstream of the hearting zone, and 4.00-m height on the top. A cut-off trench taken up to hard rock, filled with the impermeable soil is provided below the heart- ing zone. An inclined graded sand filter of 2.0-m and horizontal graded sand filter of 1.0-m are provided downstream of the hearting zone. A 61-cm thick rip rap over a filter layer of 45-cm is provided on the upstream side of the earthen embankment with concrete toe wall. Rock toes on downstream are provided with graded filters at their base and embankment sides. Horizontal berms 3.0-m wide are provided on the downstream slope of the embankment at a designed elevation of the earthen dam. Downstream slope of the embankment is provided as 2H:1V&2H:1V, whereas for the upstream side slopes of 3H:1V& 3.5H:1Vare provided. The dam top width is 4.00-m. . iii) Masonry non-overflow section: This portion is constructed in un-coursed rubble stone masonry in cement mortar. 1:4 for hearting. The upstream and downstream faces are provided with 67.5 cm thick coursed stone masonry in cement mortar. 1:3& 1:4 in upstream and downstream respectively A drainage gallery of size 1.6-m x 2.40-m is provided in the central masonry portion for a distance of 354.6- m. Drain holes of 75-mm diameter at intervals of 6.00 m c/c are provided in the gallery. A road way 400-m wide with parapets is provided at the dam top. iv) Spillway Dam Section: Spillway is the construction is of (RCC) cement concrete.6 Nos of radial Crest gates of Size 15-m by 10-m are provided in the spillway portion which are Designed flood reviw 1)original inflow design peak flood(m3/s) 1378.60(m3/s) 4.69 Lakhs cusecs 1) Original outflow (m3/s) 7078.14(m3/s) 2.50 Lakhs cusecs.
View of 80-Tonne capcity moving Gantry crane.
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O&M Manual for Karanja Dam January 2020
v) River Sluice Gate:- Six River sluice gates of size 15.00 m-wide by 10 m-Height are provided for Karanja Dam to operate when the water level recedes in reservoir below the crest level of 574.15 m which operates electrically. For servicing of river sluice gates. A 80 –T moving Gantry crane has been provided with emergency gate. And allow six No Stop-log gate. Periodical maintenance such as lubrication, filling of gear oil. Etc, are being done annually on a tender base. replacement of rubber seal and painting of river sluice gates and emergency gates are being taken up whenever required on tender basis vi)Irrigation sluices: Karanja Dam is provided with 3 main canals out of which Karanja Left Bank canal and Right Bank canals of taking from the dam having Left Bank canal gate of size 1.00-m wide by 1.00-m height (one is service gate and Emergency gate) and Right Bank canals sluice two vent of each vent gate of size 2.75-m wide by 2.00-m Height (one is service gate and Emergency gate) respectively which operate manual( by worm gear ). For servicing of irrigation canal sluice gates. Periodical maintenance of these gates is taken up annually on tender basis which includes such as lubrication and filling of gear oil, etc,.replacement of rubber seals and painting of irrigation sluice gates are being taken as required on tender basis 1.4:-Salient feature of Karanja Dam 1,GENERAL A ) Name of the project Karanja Irrigation Project B) Location i) River Karanja a Tributary of River Manjra which joins River Godavari ii) Village Byalhalli iii) Taluka Bhalki iv) District Bidar v) Co-ordinates a) Latitude 170-53’ b) Longitude 770-19’ C) Hydrology i) Total catchment area at project site 2025.28 Sq. Kms(782. Sq Mailes) ii) Weighted annual rainfall dependability 930 mm(36.64 inches) iii) 75% dependable net flow at project 162.45 M cum(5737.00 Mcft) site iv) Proposed annual utilization 139.17 M cum(4915.00 Mcft) D) D) Dam and Reservoir i) Gross storage capacity 217.65M.cum(7691.32 Mcft) ii) Live storage capacity 207.65M.cum(7316.11 Mcft) iii) Top of dam R.L 590.00 M(1935.70 feet) (Top of 0.85 m solid parapet) (Including 0.85 m parapet wall) iv) M.W.L R.L 587.15 M(1926.44 feet) v) F.R.L R.L 584.15 M(1916.50 feet) vi) M.D.D.L R.L 577.84 M(1896.05 feet)
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O&M Manual for Karanja Dam January 2020
vii) Lowest River Bed Level R.L 568.45 M(1865.08 feet) viii) Type of Dam Earthen Dam with Zonal Section ix) Total length of dam 3480 M(11417.90feet) x) Top width of dam 4.00 M(13.12 feet) xi) Height of dam above deepest bed level 20.70 M(57.91feet) xii) Free Board 585 M(19.19 feet) E) Spillway i) Type RCC Ogee spillway with radial gates ii) Location Centrally located at dam iii) a) Length of RCC over flow section 107.50M (Excluding 22 m key wall on either side) b) Length of Earthen Bank left side 1770 m (5807.37 feet) c)Length of Earthen Bank Right side 1602.50 m (5257.80 feet) iv) Design flood discharge 13280 cumecs(4,69,000 cusecs)
v) Spillway/max. routed flood discharge 7078 cumecs(2,50,000 cusecs) vi) Crest level R.L 574.15 M vii) Size and No of gate 6 Nos of radial gates of 15Mx10 M size each F) Submergence i) Land submergence under full reservoir 6068 Ha(14990 Acres) comprising of Govt land 500 level Acres private land 13517 Acres No forces land involved ii) Villages affected 24 Nos. of which 7 villages come under submergence effecting population of 9080
iii) Fanilies to be affected 1593 Nos G) Head outlets and canals Left Bank Right Bank a) Head outlets and Canal Rl 575.15 m Rl 575.15 M i)Civill Level (1887 feet) (1887 feet) ii)Size and No of ventse 1Nos (1.0 x1.00 m) 2 Nos (2.75 x 2.00 m) iii) Discharging capacity 1.98 cumecs 16.935 Cumes b) Flow canal i) Discharge (required maximum) 1.98 Cumecs 16.935 Cumecs (70 cusecs) (598 Cusecs) ii) Length of main canal 31 Kms(19.5 Miles) 131 Kms(81.50 Miles) H) Fore shore lift Karanja Lift irrigation scheme i) Location of jack well On Right bank of Karanja River 1 Km
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O&M Manual for Karanja Dam January 2020
upstream from dam site ii) Required max discharge in lift canal 1.98Cumecs(70.00 Cusecs) iii) Intake channel a)Length 700 ft(213.35 m) b)Required maximum Discharge 3.455cumecs (122.50 cusecs) iv) Raising mains 1 Nos M.S pipe of 1.05 Mtr dia(1640 m length) v) Total H.P 1600 Hp(4 x 400 HP) vi)Total static head 32.17 Mtr(105.56 ft) vii)No of pump set 4 Nos of 400 H.P. including one standby viii) Length of lift canal 24 Kms I) Fore shore lift Atiwa Lift irrigation scheme i) Location of jack well On Right bank of Karanja River 1 Km upstream from dam site ii) Required max discharge in lift canal 1.53Cumecs(54.00 Cusecs) iii) Intake channel Length 1560 m iv)Required maximum Discharge 2.29cunecs (81 cusecs) v) Raising mains 1 Nos M.S pipe of 1.200 Mtr dia(1510 m length) vi) Total H.P 1500 Hp(5 x375 HP) vii)Total static head 38.30 Mtr(125.65 ft) viii)No of pump set 4+1 Nos of 400 H.P. including one stand by ix) Length of lift canal 15.00+6.20=21.20 Kms (North+South canal) J) Irrigation aspect As per planning As per Actual i)Gross commend area 48968 Ha 35614 Ha ii)Cultural able commend area 35614 Ha 29227 Ha iii)Left Bank canal 3238 Ha 2521 Ha iv)Right Bank canal 28329 Ha 19217 Ha v)Karanja lift irrigation scheme 4047 Ha 3873 Ha vi)Atiwal Lift irrigaton scheme - 3616 Ha Total 35614 Ha 29227 Ha
ENERGY DISSIPATING ARRANGEMENTS : Stilling basin of 10 Mtrs. length and reverse slope for a length of 28 Mtrs is provided based on model studies to dissipate the energy. On the left and right side adjacent to the training wall flexible apron is provided for a length of 19 Mtrs and for 60 Mtrs. lengths to absorb the spill of flood discharge on the either flanks.
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O&M Manual for Karanja Dam January 2020
OUTLET (IRRIGATION SLUICES) : There are two outlets one on either bank with details as indicated below; Left Bank Sluice Right Bank Sluice 1 Location Ch: 1070 m Ch: 2790 M 2 Sill level RL. 575.15 m RL. 575.15 m 3 Size of vent 1 m x 1 m 2.78 m x 2.00 m 4 No. of vents One Two 8 Discharge capacity 1.98 cumecs 16.938 cumecs (70 Cusecs) (598 Cusecs) CANALS: The project is originally designed for 38614 Ha. The canal system consists of two canals, one on either bank and one fore shore lift canals. The sill level of both the canals at head is R.L. 575.15 M and that of lift canals is at R.L. 575.15 M. The potential created under each canal against the contemplated potential is as under: Asper actual Contemplated potential Head potential created Length in discharge Area proposed for Km. Cropped ICA Cropped (cumecs) irrigation (Ha) area (Ha.) (Ha) area (Ha) i) Left Bank Canal 31 1.98 3238 4048 2821 3466 ii)Right Bank Canal 131 16.938 28329 41848 18217 28048
iii)Lift Canal (KLI) 24 1.98 4047 4047 2088 2826 Total 38614 49940 22793 31340
As the contemplated potential of 38614 Ha could not be achieved by completing the originally designed components, the following components are proposed to be included for creation of 6434 Ha potential within the scope of the project and with allocated water of 9.27 TMC. Area Discharg Sl. Length proposed for Cropped Name of canal e at Head Remarks No. in Km. irrigation area (Ha) (cumecs) (Ha) 1 Left Bank Canal 31 2821 3848 1.98 2 Right Bank Canal including 131 19217 29306 16.938 Additional potential tail end distributary for of 1000 Ha by obligatory tailing-off canal construction of tail end distributary 3 Lift Canal i)Karanja LIS including D- 24 3873 8906 1.98 Additional potential 1(A) of 1818 Ha by construction of D- 1(A) ii) Atiwal LIS 18 2091 3189 0.88 (a) North Canal
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O&M Manual for Karanja Dam January 2020
(b) South Canal 6 1828 2346 0.64 Additional potential of 3616 Ha under Atiwal LIS Total 29227 44892 Additional potential 6434 Ha
ELECTRIFICATION TO DAM Electrical network has been installed for the operation of Radial Crest Gates and illumination to dam including drainage gallery of Karanja Dam. 110 KVA Transformer is installed at downstream side of Left Bank earthen dam of Karanja Dam and power supply is being supplied from this transformer for operation of gates including illumination to dam and as well as drainage gallery. The Generator room is constructed just near by the 110 KVA Transformer and 1 Nos of diesel Generator 110 KVA have been installed in generator room.
Fore Shore Lift Irrigation Components:
KARANJA LIFT IRRIGATION SCHEME: Karanja Fore shore Lift Irrigation is contemplated in the approved scope of the project from the Planning Commission, to irrigate an area of 4047 Ha. (10,000 Acres) on the Right Bank of Karanja reservoir. The scheme envisages construction of Jack well, Intake Channel, Rising Main, Cistern and Canal System. The head works and main canal up to 24 Kms along with distributaries and DPO’s are completed including FIC’s and the last distributary No23 is in progress. Now, the feasibility of extending one more distributary (viz., Distributary-1(A) from the 1st km downstream of cistern (bifurcating chamber) is being explored with an additional potential of 1893 Hectors is in progress.
ATIWAL LIFT IRRIGATION SCHEME: Atiwal Lift Irrigation Scheme is proposed to be implemented on the foreshore of Karanja reservoir on the left bank vowing to the persistent demands of the PDFs of the submerged villages viz., Atiwal, Dakulgi, Hilalpur, Ameerabad Wadi, Sakkarganj Wadi, Hallikhed(B) Mashimad and Chalkapur,wadi who have lost more than 200 Ha of agriculture lands and 300 houses. This project displaces families mainly depend on agriculture and their remaining small land holdings are with poor irrigation. In order to mitigate the agriculture needs of these project displaced families, Atiwal LIS is proposed to be implemented to irrigate an area of 3616 Ha of lands of PDFs through North and South canals. The scheme envisages construction of intake channel, jackwell with pump house, pumps, delivery chamber, combined North and South canals. This scheme was cleared by the Technical Advisory Committee, Major and Medium Irrigation Projects, of the State of Karnataka in its 81st meeting held on 18-09-2008. The head works is completed and North canal work is in progress. The south canal work is not started due to land owners objecting for excavation of canal.
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O&M Manual for Karanja Dam January 2020
DRAINAGE GALLERY KARANJA DAM The Drainage gallery of Karanja dam extends from ch 1866.00 mter from LBC side the total length of drainage galley is 107.50 Mtr and the foundation Hole in 16 No’s
Sl No Foundation Drain Holes Number Chainage Remarks 1 1 1566.00 10 mtr Depth 2 2 1572.00 10 mtr Depth 3 3 1578.00 10 mtr Depth 4 4 1584.00 10 mtr Depth 8 8 1590.00 10 mtr Depth 6 6 1602.00 10 mtr Depth 7 7 1608.00 10 mtr Depth 8 8 1610.00 10 mtr Depth 9 9 1616.00 10 mtr Depth 10 10 1622.00 10 mtr Depth 11 11 1631.00 10 mtr Depth 12 12 1637.00 10 mtr Depth 13 13 1638.50 10 mtr Depth 14 14 1662.50 10 mtr Depth 18 18 1666.50 10 mtr Depth 16 16 1676.50 10 mtr Depth
And Body holes are in 11 No’s its Dia is 6” each and Depth is 6.00 Mtr each
1.5 Assignment of Responsibility The Karnataka Neravari Nigam Limited is the owner and has the final authority and responsibility for the operation and maintenanceof the dam. Identification of all areas of responsibilities connected with the operation and maintenance of the dam are covered in this section. The officer’s responsibilities for the various functions are identified by their designation and in particular the responsibilities of operating personnel are specifically identified in below and includes regularly scheduled duties which staff personnel are required to perform as outlined in the following tables: Table 2 – Overall Responsibilities for Karanja Dam SL Particulars Remarks No 1 Karnataka.Neravari Nigam Limited, (A Govt of Karnataka Implementing Agency Undertaking) Water Recourses Department, Karnataka 2 Project Administration Officer in Managing Director, KNNL, Bengaluru charge 3 Operations of Equipment at the Dam Chief Engineer, KNNL, Dam Zone, Kalaburgi 4 Reservoir inflow and Flood Executive Engineer, KNNL, KPC Division No-1, Bidar forecasting 8 Authorising spillway flood releases Chief Engineer, KNNL, IP Zone, Kalaburgi.
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O&M Manual for Karanja Dam January 2020
6 Chief Engineer, KNNL, IP Zone, Kalburgi. as per the Authorising releases for various proceedings of the Irrigation Consultative Committee purposes like irrigation,water meeting (ICC) and in consultation with Managing supplyhydro-power, etc Director,KNNL Bengaluru 7 Recording reservoir Data Executive Engineer, KNNL, KPC Division No-1, Bidar 8 Routine inspection Executive Engineer, KNNL, KPC Division No-1, Bidar 9 Maintenance Executive Engineer, KNNL, KPC Division No-1, Bidar 10 Instrumentation Executive Engineer, KNNL, KPC Division No-1, Bidar.
1.5.1 Roles and Responsibilities of the AEE and AEduring Monsoon Table 3 – Roles & Responsibilities of AEE & AE Step Flood condition assessment, warning, flood mitigation, and other responsibilities Coordinate with the CWC Authorities/Engineer Project Engineers of the State of Telangana & to 1. get the information in email on the rainfall in the catchment and inflow status at the state boundary (Kotur bridge Telangana) and to bring it to the notice of the EE/SE/CE Assist the EE/SE/CE to issue notification to the villagers downstream in Newspapers, Radio, TV 2. News channel to be alert regarding the flood situation Assist the EE/SE/CE to coordinate with the Revenue authorities (District Administration) to alert 3. the downstream villagers to evacuate the flood zone to prevent loss of life and live stock Assist the EE/SE/CE to coordinate with the CWC flood monitoring authorities on the flood 4. condition Maintain the reservoir water level gauge register and to update on hourly basis during floods. and 5. to bring to the notice of EE/SE/CE Assess the inflows in the reservoir as per the approved reservoir operation and to prepare proforma 6. consisting of the status of the reservoir capacity and releases from the reservoir as per the standard Performa and to submit to the EE/SE/CE Submit to the EE/SE/CE on the inflows and releases from the reservoir and status of the reservoir 7. twice in the day 8. Maintain the spillway crest gate operation log book Operate the Spillway crest gates for flood mitigation as per the instructions of the EE/SE/CE and to 9. update the Gate operation Log book Observe the seepages in the drainage Gallery with respect to the reservoir head and record the 10. seepages in the infiltration gallery and to immediately bring to the notice of the EE/SE/CE in case of excessive seepage ,leakage in any specific blocks and porous drains Maintain the pump operation log books for the dewatering pumps in the drainage gallery and to 11. submit to EE/SE/CE Observe the gates and to see that the drain holes are not clogged and floating debris is not deposited 12. in the gate components Monitor the condition of the Welding transformers, gas cutting sets, umbrellas, tool kits torches 13. chain blocks ropes ballies etc on daily basis and to see that things are in place to handle any emergency situation Observe the Gates, hoists and handling equipment during operation for the smooth movements and 14. to immediately report any untoward excessive sounds in the motors, pumps or vibrations in the gate Observe the dam top, embankment, catwalk, approach roads are well maintained by housekeeping 15. personnel
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O&M Manual for Karanja Dam January 2020
Observe the performance of the Dam and its appurtenant structures / Gates and Hoists during flood 16. water releases and to report to the EE/SE/CE in case of any untoward incidents or malfunctioning of the gates of excessive seepages, leakages etc Assist EE/SE/CE to coordinate with the downstream Karanja Dam Project Engineers and getting 17. the flow data Assist EE/SE/CE to share the flow data and the reservoir storage details to the Media on day to day 18. basis Assist EE/SE/CE to coordinate with the Project Engineers of the State of Andhra Pradesh/Telangana 19. and sharing the details of the flood condition in the river and the reservoir releases 1.5.2 Roles and Responsibilities of the SE and EEduring Monsoon Table 4 – Roles & Responsibilities of SE & EE Step Flood condition assessment, warning, flood mitigation and other responsibilities Coordinate with the CWC Authorities/Engineer Project Engineers of the State of Telangana & 1. to get the information in email on the rainfall in the catchment and inflow status at the state boundary (Kotur bridge Telangana) and to bring it to the notice of the CE To issue notification to the villagers downstream in Newspapers, Radio, TV News channel to 2. be alert regarding the flood situation Assist the CE to coordinate with the Revenue authorities (District Administration) to alert the 3. downstream villagers to evacuate the flood zone to prevent loss of life and live stock 4. Assist the CE to coordinate with the CWC flood monitoring authorities on the flood condition Submit to the CE on the inflows and releases from the reservoir and status of the reservoir twice 5. in the day Operate the Spillway crest gates for flood mitigation as per the instructions of the CE and to 6. update the Gate operation Log book Observe the seepages in the drainage Gallery with respect to the reservoir head and record the 7. seepages in the infiltration gallery and to immediately bring to the notice of the CE in case of excessive seepage, leakage in any specific blocks and porous drains Observe the Gates, hoists and handling equipment during operation for the smooth movements 8. and to immediately report any untoward excessive sounds in the motors, pumps or vibrations in the gate Observe the dam top, embankment, catwalk, approach roads are well maintained by 9. housekeeping personnel Observe the performance of the Dam and its appurtenant structures / Gates and Hoists during 10. flood water releases and to report to the CE in case of any untoward incidents or malfunctioning of the gates of excessive seepages, leakages etc Assist CE to share the flow data and the reservoir storage details to the Media on day to day 11. basis Assist CE to coordinate with the Project Engineers of the State of Andhra Pradesh/Telangana 12. and sharing the details of the flood condition in the river and the reservoir releases
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O&M Manual for Karanja Dam January 2020
1.5.3 Roles and Responsibilities of the Chief Engineer during Monsoon Table 5 – Roles & Responsibilities of the Chief Engineer Step Flood condition assessment, warning and flood mitigation
Must study the flood condition of the dam along with the SE, EE, and other dam concerned officers, Instruct the officers concerned to take immediate steps to evacuate the excess flood with the available 1. provision and to give vast publication to the livestock at the downstream of the reservoir. At the same time must communicate and share the flood condition and action to report with the district disaster management and other state authorities concerned
2. Coordinate with the CWC flood monitoring authorities on the flood condition Issue necessary instructions to the engineers to Operate the reservoir based on the inflows, rainfall data, 3. releases from the upstream reservoirs and status of the reservoir Observe the performance of the Dam and its appurtenant structures / Gates and Hoists during flood water 4. releases and to issue necessary instructions to the AEE/EE/SE
5. Coordinate with the downstream Karanja Dam Project Engineers 6. Conduct Pre and Post Monsoon inspections of the Dam 1.6 Collection & Reporting of Dam and Reservoir Data A proforma is provided to ensure that dates and times for the collection and reporting of vital information is recorded and documented for the record. Reservoir water surface elevation Reservoir inflow. Spillway outflow. River releases. Irrigation, water supply and hydropower releases. Weather related data Instrumentation data Water quality Instructions and a standard proforma for collection and reporting of inflow and outflow data, and other pertinent data, is shown in Figure 6 below. Records [Logbooks] of the following operations at Karanja Dam are to be maintained in a chronological manner for reference. These records are helpful for identifying preventative maintenance measures that may need to be taken up, troubleshooting the cause of potential equipment failure and documenting development of any unusual conditions. Date and Time Attendance statement during normal operations – both during monsoon and non-monsoon periods. Operations of the spillway gates and outlet works. Operating hours of mechanical equipment. Testing / Operation of spillway gates, stop-logs and associated controls. Testing/operation of Outlet gates, valves and associated controls, Maintenance activities carried out. Reservoir and dam inspections. Unusual conditions or occurrences, including acts of vandalism. Attendance statement at the dam during emergency operations. Changes to normal operating procedures. Communication network checks. Safety and special instructions. Names of officers and staff carrying out inspections and maintenance. Any other item pertaining to the operation and maintenance of the dam 31
O&M Manual for Karanja Dam January 2020
Table 6–Example Proforma for recording Flow Data For the Month of ______
Out Flow in Cusecs Spillway Water Inflow Reservoir Date Time level in in Gates Total Capacity in KLBC KRBC KLIC ALIC River Mtr. Cusecs O/F TMC
Foot note 1: To be indirectly calculated as pe examples 1 and 2 in chapter 2 paragraph 2.2.6.2 & 2.2.6.3
Legend KLBC: Karanja Left Bank Canal KRBC: Karanja Right Bank Canal KLIC: Karanja Lift Irrigation Scheme ALIC: Atiwal Lift Irrigation scheme River Karanja River
1.7 Public and Project Staff - Health and Safety
As safety of Project Staff is of prime concern, safety instructions & protection measures at the dam are carried out by all staff/ project personnel. The flex boards and warning boards provided at deferent places provide the public notices of events and status of security of the dam and down- stream river conditions.
1.7.1 Restricted Areas Certain areas of the dam and reservoir are restricted forentry of the general public. The purpose of restrictions is for security of the dam, public safety and uninterrupted safe operation of the dam. Restricted areas will include the following: Confined spaces such as adits, galleries, etc. Spillway approach areas, chutes and stilling basins. Control buildings and valve areas. Intake or outlet channels adjacent to hydraulic structures. Upstream and downstream slopes/faces of the dam 1.7.2 Details of the Security arrangements at Karanja Dam Site. The security arrangements of Karanja Dam are entrusted to the Tender base Agency M/S Nau-Ratana Manpower Agency & Security Guard Services Date 1-08-2019 with a total strength of 09 Security personnel.
1. Security Officer 2. Duty Officer One duty officer is deployed per shift of 8 Hours. There are 3 shift duty officers of the working in 8 hours 32
O&M Manual for Karanja Dam January 2020
Figure-5 LAYOUT OF KARANA DAM PERMISES
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O&M Manual for Karanja Dam January 2020
1.8 Staff Position, Communication & Warning System The number & description of operating unit personnel posted/placed at different locations of the dam may vary according to requirement during monsoon / non-monsoon periods. An engineering organisational chart is shown in Figure 4 below. The means of communications both in normal and emergency situations are identified in the Communication Directory found below. Available communication means including landline, mobile phones, to maintain security of the dam. A utility room located on the downstream and in front of the dam is an equipment room with all essential small tools, welders, gas cutter sets, chain blocks and ropes, space for the hydraulic hoist, dewatering pumps, weather gear, and consumables to facilitate O&M requirements. A brief description of the warning systems including alarms at the dam is mentioned in the Manual. This includes information on downstream inundation areas during scheduled or unscheduled re- lease of flood outflows from the spillway. Basic facilities like communication facilities, sirens etc. are provided.
Figure 6 - Organisation Chart
Chief Engineer KNNL IP Zone Kalburgi Land Line phone No 0847256561
Superintending Engineer KNNL IPC Canal Kalburgi Land Line phone No 08472220342
Executive Engineer KNNL KPC Division No-1 Bidar Land Line phone No 08482226490
Assistant Executive Engineer KNNL KP Dam Sub- Division No-3 Halhalli Land Line phone No 08482226490
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O&M Manual for Karanja Dam January 2020
1.8.1 Schedule of General Duties for Project Engineers Schedules of duties being performed by the staff assigned to various locations and components of Karanja Dam are provided in this section. All activities are to be recorded daily in the Logbook and site registers. DAILY Visual inspection of dam Crest of dam (Dam top) Upstream and downstream faces Visible portions of foundation and abutments contacts Galleries Record water surface elevation. (during monsoon on hourly basis) Record reservoir inflow and spillway discharge. (during monsoon on hourly basis) Record releases from outlets /sluices. Record seepage from drainage systems-Toe drains, Gallery drains etc. on daily basis Record meteorological data. Check security and safety devices. Complete logbook / site registers which should include the above information WEEKLY Electrical System Standby generator (DG Sets) Run for 18-30 min to achieve recommended operating temperature Check status of batteries and keep them charged. Check Fuel Supply Drainage systems - Toe drains, Gallery drains etc., and, during any reservoir filling operations MONTHLY Check condition of: Dam and Reservoir Reservoir periphery (During Monsoon) Drainage systems - Toe Drains, Gallery drains etc. (on regular basis ) Measuring devices/Instruments Security and safety devices – rectification, if needed. Communication Devices Status of Vegetation growth Check Sign/Warning display boards near vulnerable locations are in place and updated as necessary Mechanical/Electrical System Replace fuses/light bulbs, as necessary Inspect and maintain ventilation system; check for and remove any obstructions Cleaning of control panel boards QUARTERLY Outlet Works Availability of updated operating instruction Check gate air vents Clean gate control switchboxes Check operation of gates and valves
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O&M Manual for Karanja Dam January 2020
Grease gate hanger / dogging arrangements Check Check condition of trash rack of intake structure Check condition of Outlet works &the Energy Dissipation Arrangement (EDA) Spillway Check for debris in inlet channel Check operation of gates Check for damages in spillway glacis, EDA, d/s area, etc. Check and clear spillway bridge drains Clean inside of motor control cabinet and remove debris, insect (bee nests), nests, rodents and bird nests Other works Check for adherence to instrumentation schedule Record pertinent information in Operation Log Check conditions of V-notch weirs/other seepage measuring devices BI-ANNUAL Spillway & outlet works Check paint on gates and other areas of corrosion Check lubrication of wire ropes and application of cardium compound. Check mechanical hoist bearings and flexible coupling bearings Check gear systems Exercise gate and valves for operational efficiency Check oil reservoir level in hydraulic system and top up as necessary Check pressure release valve and clean any debris, dirt, other foreign objects as necessary Lubricate gate rollers Check rubber seals and seal clamp bar Electrical System and Equipment Change oil in stand by generator Check exposed electrical wiring of: Operating equipment of gates/valves/hoists of Outlet works. Operating equipment of gates and hoists of Spillway Operating equipment of any other gates and hoists in dam Spillway catwalk / bridge Dam Gallery Check Gate limit switches and adjust ANNUAL Spillway &Outlet works Paint Metalwork, Gate, Hoists and all exposed metal parts for corrosion Valves / Control valves Hydraulic power pack system Exercise Gates and Valves Examine stilling basin / energy dissipation arrangement and d/s channel & carry out rectification works, as necessary. Check metal welds for damages/cracks in Gates, Hoist platform, Radial Gate Tie flats, Trunnion Girders/supports etc. Electrical
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O&M Manual for Karanja Dam January 2020
Check electrical conduits, pull-boxes and switches for: Outlet works valve house Gates & hoists Spillway bridge Gallery FIVE YEAR (PERIODIC) Inspect intake structures, trash racks and stilling basin / energy dissipation arrangement, which normally are underwater; less frequent if experience indicates. This may need to be done by carrying out dewatering or by divers/remote operated vehicle (ROV) as necessary. Review Dam operation procedures and EAP and update as necessary.
1.8.2 Electro-Mechanical Inspections / Checks Special duties performed for H-M operating personnel works are given in this section. Frequency of inspections / checks for hydro-mechanical components and necessary actions to be taken up during maintenance 1. Radial Crest Gates - 6 Nos.
a. Embedded Parts
Sl. Embedded Part Frequency No. Checking of seal beams. Seal Seats, Guide track & all other exposed embedded parts with respect to their alignment, distortion: if any due to Half 1 continuous use, pitting and un-necessary cracks due to wear & carrying out Yearly requisite repairs, rectification by welding, grinding etc. Removing debris & other foreign material deposited on embedded parts & 2 Monthly cleaning the same Half 3 All cracks & defective weld joints to be ascertained & rectified. Yearly All dirt, debris, grit, foreign material etc. to be removed from trunnion assemblies as well as trunnion chair and lubricate trunnion bearing & the 4 Monthly sliding surface on trunnion chair with specified lubricant/ grade to ensure smooth sliding movement of trunnion. All nut bolts connecting Trunnion Assembly & Trunnion Chair and Trunnion 5 & Yoke, girder Trunnion pin lock plate to be checked & Tightened and Monthly replacement the same if found defective.
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O&M Manual for Karanja Dam January 2020
b. Gate Structure Sl. Embedded Part Frequency No.
Regular inspection of the gate along with the hoist to be carried out daily to 1 Daily ensure that there is no unusual development/ observation
2 Check all welding for soundness & rectify defects Quarterly Check welding between arms & horizontal girders as well as arms & 3 Trunnion with the help of magnifying glass for cracks/ defects and rectify Quarterly the defects. Clean all drain boles including those in end arms, horizontal girders & 4 Quarterly Trunnion Check all nuts & bolts provided and tighten them, and replace the defective 5 Quarterly nuts & bolts
Check upstream face of Skin plate for pitting, scaling and corrosion. Scaling 6 formation are to be removed. Pitting shall be filled with weld & ground. Yearly Corroded surface shall be cleaned & painted
Joints of side & bottom rubber seals to be checked for their proper alignment 7 Monthly and fixing & to be rectified/ adjusted if there is leakage through joints
Nuts & bolts for rubber seal connection to be tightened and damaged nuts 8 Quarterly and bolts to be replaced
The excessive or widespread leakages if any shall be reported to the engineer in charge. If the seals are required to be replaced the same shall- 9 be carried out after supply of rubber seal by the department free of cost in Quarterly case the change of rubber seals is more than once during total maintenance period of five years 10 The guide roller pin is to be lubricated Quarterly
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O&M Manual for Karanja Dam January 2020 2. Hydraulic Hoist 6 Sets Sl. Description Frequency No. 1 Checking of oil level of power packs and pouring of make-up oil as & when required Daily Monthly & 2 Checking, adjustment & repairing of relief & flow during rainy season Monthly & Checking, adjustment & repairing of pressure switch &, . flow switch, solenoid 3 during rainy valves, etc. season Checking, cleaning, etc., of all filters, silica gel etc., & their replacement and when 4 Weekly required Checking & repairing & replacement whenever necessary, oil seals, 0-rings, ferules, Every 8 argon welding, etc. of hydraulic pipe lines 2 months Checking of the main and pilot pressure of the system for their desired level & 6 Weekly adjustments, required repairing 7 Checking, adjustment & repairing of all measuring system such as TGSE, etc Monthly Checking, repairing and replacement whenever necessary of all valves, valve seals, 8 Monthly couplings of pipe lines, etc Checking, repairing & making good of all electrical wirings & connections of local 9 Monthly panels Checking, repairing & making good and replacement of all electrical contactors, 10 Monthly timers, limit switches, fuses etc. including setting of limit switches 11 Checking & maintaining hydraulic accumulator charging pressure Weekly Complete trouble shooting of the entire system as and when necessary to maintain 12 the same such that the system can be put to operation at any point of time as per Weekly requirement Checking and ensuring perfect lubrication of the entire equipment with 13 Monthly recommended lubricants & methods of the manufacturer. Checking & ensuring adequate hydraulic oil of standard make by making up short 14 Monthly falls if any The maintenance of the equipment cleaning & shall include inspection, checking and ascertaining the deficiencies in the equipment for its smooth & trouble free As per 15 operation. The deficiencies noticed shall be rectified by resorting to cleaning, requirement adjustment, repairs, replacement of troubled/ damaged parts as per the requirement Necessary maintenance records are to be prepared as a result of periodical inspection 16 and submitted for deciding actions in respect of necessary repair/replacement of Monthly parts
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O&M Manual for Karanja Dam January 2020 Stop Logs Embedded parts (Gate 1-6)
Sl. Description Frequency No. 1 Inspection, checking of sill beams, side seals, guide track and other exposed embedded parts with respect to their alignment cracks, distortion, pitting, Half Yearly uneven surface due to wear & tear. and ascertaining defects. Carrying out requisite repair/rectification by welding, grinding etc. as per requirement 2 Removal of debris and other foreign material deposited on the E.P. and Quarterly cleaning the same 3 All cracks & defective weld joints of E. P. to be ascertained & rectified by Quarterly respective welding
1.9 Distribution of Operation & Maintenance Manuals The list of unit officers to whom the O&M Manual is required to be distributed is shown in the table below. Table 7 - Distribution of O&M Manual and Revisions Number of Sl Unit Officers Manual No Distribution 1. Secretary to Govt, Water Resources Department, Vikasa Soudha, Bengaluru 3 2. Managing Director, KNNL, Bengaluru 1 3. Chief Engineer, KNNL, IPZone Kalburgi. 1 4. Library of the Dam Zone, Karanja 1 5. Chief Engineer, Water Resources Development Organization, Bengaluru. 1 6. Director, KERS, K R Sagara. 1 7. Superintending Engineer, SPMU, WRDO, Bengaluru 1 8. Superintending Engineer, KNNL, IPCC Circle, Kalaburgi. 1 9. Library of the Dam Circle, Karanja 1 10. Executive Engineer, SPMU, DRIP Bengaluru 1 11. Deputy Chief Engineer, KNNL, IP Zone, Kalaburgi 1 12. Executive Engineer, Monitoring and Evaluation, Bengaluru 1 13. TA to CE, IP Zone, Kalaburgi 1 14. TA to SE, IPCC Circle, Kalaburgi 1 15. Executive Engineer, KNNL, KPC Division No-1, Bidar 1 16. Executive Engineer, KNNL, KPC Division No-2, Bhalki 1 17. Assistant Executive Engineer, KNNL, KP Dam Sub Division, No-3 Halhalli 1 18. Assistant Executive Engineer, KNNL, KPC Sub Division-3, Bhalki. 1 19. Assistant Engineer, KNNL, KPC Sub Division -2, Bhatumbra 1 20. Assistant Engineer, KNNL, KPC Sub Division -4, Humnabad 1 21. Assistant Engineer, KNNL, Dam Sub Division -8 , Janwada 1 22. Technical Section of Central Office IPCC Circle, Kalaburgi. 1
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O&M Manual for Karanja Dam January 2020
1.10 Supporting Documents & Reference Material This O&M Manual is the key instruction document. Supporting documents and necessary instructions for all phases of the operation, inspection and maintenance of the dam, reservoir and appurtenant works shown below are available at the dam control room: Emergency Action Plan (EAP) Emergency Action plan (EAP) Flood forecasting and operating criteria Basin or river operating plan Interstate agreements Agreements with other user agencies Power station operation plan Irrigation operation plan Domestic / industrial water suppl operating instructions Administrative procedures Reservoir / River pollution contingency plan Maintenance schedules Gate Manufacturer’s instructions and drawings Regional communication directory Instrumentation reports / results
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O&M Manual for Karanja Dam January 2020
Chapter 2-Project Operation
2.1 Basic Data The Karanja operation plan consists of step-by-step instructions for operating the dam and reservoir during routine (normal) and emergency conditions. The operating procedures for normal operations are discussed in in this chapter including operating criteria for the reservoir, spillway &outlets. The operation of a dam involves regulation of its reservoir as per project specific requirements. This includes the use of area capacity curves and design flood; both are described below.
2.1.1 Area Capacity Table & curve
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O&M Manual for Karanja Dam January 2020 Table-8 Karanja Dam Reservoir capacity RL of RL of Countour Cumulative Remar RL of RL of Countour Cumulative Remar counter counter in Area in capacity in ks counter counter Area in capacity in ks in Mtr feet M.Sqm M.Cft in Mtr in feet M.Sqm M.Cft 576.680 1891.900 8.028 690.788 577.070 1893.278 9.883 821.208 576.660 1891.933 8.063 693.626 577.080 1893.311 9.621 824.896 576.670 1891.966 8.099 696.480 577.090 1893.344 9.660 828.001 576.680 1891.998 8.138 699.346 577.100 1893.376 9.699 831.419 576.820 1892.488 8.140 699.806 577.110 1893.409 9.739 834.882 576.690 1892.031 8.170 702.228 577.120 1893.442 9.778 838.298 576.700 1892.064 8.206 708.117 577.130 1893.478 9.817 841.787 576.710 1892.097 8.242 708.021 577.140 1893.808 9.886 848.231 576.720 1892.130 8.277 710.938 577.180 1893.840 9.896 848.719 576.730 1892.162 8.313 713.867 577.160 1893.873 9.938 882.221
576.740 1892.198 8.349 716.809 577.170 1893.606 9.978 888.736 576.780 1892.228 8.388 719.764 577.180 1893.639 10.018 889.266 576.760 1892.261 8.422 722.732 577.190 1893.672 10.084 862.809 576.770 1892.294 8.488 728.712 577.200 1893.704 10.094 866.367 576.780 1892.327 8.494 728.706 577.210 1893.737 10.134 869.939 576.790 1892.389 8.830 731.712 577.220 1893.770 10.174 873.828 576.800 1892.392 8.867 734.731 577.230 1893.803 10.214 877.128 576.810 1892.428 8.603 737.762 577.240 1893.836 10.284 880.739 576.820 1892.488 8.640 740.807 577.280 1893.869 10.294 884.367 576.830 1892.491 8.677 743.868 577.260 1893.901 10.338 888.009 576.840 1892.823 8.713 746.938 577.270 1893.934 10.378 891.666 576.880 1892.886 8.780 780.019 577.280 1893.967 10.416 898.337 576.860 1892.889 8.787 738.116 577.290 1894.000 10.486 899.023 576.870 1892.622 8.824 786.228 577.291 1894.003 10.461 899.466 576.880 1892.688 8.861 789.348 577.300 1894.033 10.496 902.722 576.890 1892.687 8.898 762.484 577.310 1894.068 10.836 906.436 576.900 1892.720 8.936 768.633 577.320 1894.098 10.876 910.164 576.910 1892.783 8.973 768.798 577.330 1894.131 10.617 913.906 576.920 1892.786 9.010 771.970 577.340 1894.164 10.687 917.662 576.930 1892.819 9.048 778.189 577.380 1894.197 10.697 921.433 576.940 1892.881 9.088 778.361 577.360 1894.229 10.738 928.218 576.980 1892.884 9.123 781.876 577.370 1894.262 10.778 929.017 576.960 1892.917 9.161 784.804 577.380 1894.298 10.819 932.830 576.970 1892.980 9.199 788.046 577.390 1894.328 10.860 936.688 576.980 1892.983 9.236 791.301 577.400 1894.361 10.900 940.801 576.986 1893.002 9.261 793.391 577.410 1894.393 10.941 944.387 576.990 1893.018 9.274 794.870 577.420 1894.426 10.982 948.228 577.000 1893.048 9.313 797.882 577.430 1894.489 11.023 982.114 577.010 1893.081 9.381 801.147 577.440 1894.492 11.064 986.014 577.020 1893.114 9.389 804.486 577.480 1894.828 11.106 989.929 577.030 1893.147 9.428 807.779 577.460 1894.887 11.147 963.888 577.040 1893.180 9.466 811.118 577.470 1894.890 11.188 967.801 577.080 1893.212 9.808 814.468 577.480 1894.623 11.229 971.760
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O&M Manual for Karanja Dam January 2020
577.060 1893.248 9.844 817.828 577.490 1894.686 11.271 978.733 RL of RL of Countour Cumulative Remark R of RL of Countour Cumulative Remark counter in counter in Area in capacity in s counter counter in Area in capacity in s Mtr feet M.Sqm M.Cft in Mtr feet M.Sqm M.Cft 577.800 1894.689 11.312 979.720 577.920 1896.067 13.187 1160.978 577.810 1894.722 11.384 983.722 577.930 1896.099 13.202 1168.633 577.820 1894.784 11.396 987.739 577.940 1896.132 13.247 1170.302 577.830 1894.787 11.438 991.771 577.980 1896.168 13.292 1174.988 577.840 1894.820 11.479 998.818 577.960 1896.198 13.337 1179.690 577.880 1894.883 11.821 999.879 577.970 1896.231 13.382 1184.408 577.860 1894.886 11.863 1003.988 577.980 1896.264 13.427 1189.141 577.870 1894.918 11.608 1008.146 577.990 1896.296 13.472 1193.891 577.880 1894.981 11.648 1012.182 578.000 1896.329 13.817 1198.686 577.890 1894.984 11.690 1016.273 578.010 1896.362 13.863 1203.438 577.896 1898.004 11.718 1018.782 578.020 1896.398 13.608 1208.236 577.600 1898.017 11.732 1020.408 578.030 1896.428 13.684 1213.049 577.610 1898.080 11.776 1024.889 578.040 1896.460 13.699 1217.879 577.620 1898.082 11.819 1028.728 578.080 1896.493 13.748 1222.728 577.630 1898.118 11.863 1032.907 578.060 1896.826 13.791 1227.887 577.640 1898.148 11.906 1037.104 578.070 1896.889 13.836 1232.468 577.680 1898.181 11.980 1041.316 578.080 1896.892 13.882 1237.389 577.660 1898.214 11.994 1048.844 578.090 1896.624 13.928 1242.270 577.670 1898.246 12.038 1049.787 578.100 1896.687 13.974 1247.197 577.680 1898.279 12.082 1084.046 578.110 1896.690 14.020 1282.140 577.690 1898.312 12.126 1088.320 578.120 1896.723 14.067 1287.099 577.700 1898.348 12.170 1062.610 578.130 1896.786 14.113 1262.078 577.710 1898.378 12.214 1066.916 578.140 1896.788 14.189 1267.067 577.720 1898.411 12.288 1071.237 578.180 1896.821 14.206 1272.078 577.730 1898.443 12.302 1078.873 578.160 1896.884 14.282 1277.100 577.740 1898.476 12.347 1079.926 578.170 1896.887 14.199 1282.142 577.780 1898.809 12.391 1084.294 578.180 1896.920 14.348 1287.199 577.760 1898.842 12.436 1088.678 578.190 1896.983 14.392 1292.273 577.770 1898.878 12.480 1093.077 578.200 1896.988 14.439 1297.364 577.780 1898.607 12.828 1097.492 578.206 1897.008 14.468 1300.222 577.790 1898.640 12.870 1101.923 578.210 1897.018 14.493 1302.472 577.800 1898.673 12.618 1106.370 578.220 1897.081 14.888 1307.602 577.810 1898.706 12.660 1110.833 578.230 1897.084 14.623 1312.784 577.820 1898.739 12.708 1118.312 578.240 1897.117 14.688 1317.930 577.830 1898.771 12.780 1119.806 578.280 1897.149 14.783 1323.128 577.840 1898.804 12.798 1124.317 578.260 1897.182 14.818 1328.380 577.880 1898.837 12.840 1128.843 578.270 1897.218 14.884 1333.898 577.860 1898.870 12.886 1133.386 578.280 1897.248 14.949 1338.862 577.870 1898.903 12.931 1137.944 578.290 1897.281 13.012 1344.183 577.880 1898.938 12.977 1142.819 578.300 1897.313 18.081 1349.467 577.890 1898.968 13.022 1147.110 578.310 1897.346 18.147 1384.808 577.900 1896.001 13.068 1181.716 578.320 1897.379 18.213 1360.168 577.901 1896.004 13.072 1182.086 578.330 1897.412 18.279 1368.849 577.910 1896.034 13.113 1186.339 578.340 1897.448 18.346 1370.987
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O&M Manual for Karanja Dam January 2020 RL of RL of Countour Cumulative RL of RL of Countour Cumulative counter in counter in Area in capacity in Remark counter counter in Area in capacity in Remark Mtr feet M.Sqm M.Cft s in Mtr feet M.Sqm M.Cft s 578.380 1897.477 18.412 1376.388 578.790 1898.921 17.461 1634.398 578.360 1897.810 18.479 1381.843 578.800 1898.984 17.496 1640.867 578.370 1897.843 18.846 1387.321 578.810 1898.987 17.831 1646.782 578.380 1897.876 18.613 1392.822 578.818 1899.003 17.849 1649.973 578.390 1897.609 18.680 1398.348 578.820 1899.019 17.873 1682.980 578.400 1897.641 18.747 1403.897 578.830 1899.082 17.622 1689.164 578.410 1897.674 18.818 1409.470 578.840 1899.088 17.671 1668.396 578.420 1897.707 18.882 1418.067 578.880 1899.118 17.720 1671.648 578.430 1897.740 18.980 1420.688 578.860 1899.181 17.769 1677.911 578.440 1897.773 16.018 1426.332 578.870 1899.183 17.818 1684.198 578.480 1897.806 16.086 1432.001 578.880 1899.216 17.867 1690.496 578.460 1897.838 16.184 1437.693 578.890 1899.249 17.916 1696.814 578.470 1897.871 16.222 1443.410 578.900 1899.282 17.966 1703.180 578.480 1897.904 16.291 1449.181 578.910 1899.318 18.018 1709.803 578.490 1897.937 16.389 1484.916 578.920 1899.348 18.068 1718.874 578.800 1897.970 16.428 1460.706 578.930 1899.380 18.114 1722.262 578.810 1898.002 16.800 1466.782 578.940 1899.413 18.164 1728.668 578.820 1898.038 16.832 1472.381 578.980 1899.446 18.213 1738.091 578.830 1898.068 16.866 1478.196 578.960 1899.479 18.263 1741.832 578.840 1898.101 16.600 1484.082 578.970 1899.812 18.313 1747.990 578.880 1898.134 16.634 1489.920 578.980 1899.844 18.363 1784.466 578.860 1898.166 16.668 1498.801 578.990 1899.877 18.413 1760.989 578.870 1898.199 16.702 1801.693 579.000 1899.610 18.463 1767.471 578.880 1898.232 16.736 1807.897 579.010 1899.643 18.813 1774.000 578.890 1898.268 16.771 1813.814 579.020 1899.676 18.863 1780.846 578.600 1898.298 16.808 1819.442 579.030 1899.708 18.613 1787.110 578.610 1898.330 16.839 1828.383 579.040 1899.741 18.663 1793.693 578.620 1898.363 16.873 1831.336 579.080 1899.774 18.714 1800.292 578.630 1898.396 16.908 1837.300 579.060 1899.807 18.764 1806.910 578.640 1898.429 16.942 1843.277 579.070 1899.840 18.818 1813.848 578.680 1898.462 16.976 1849.266 579.080 1899.872 18.868 1820.199 578.660 1898.498 17.011 1888.268 579.090 1899.908 18.916 1826.870 578.670 1898.827 17.048 1861.281 579.100 1899.938 18.967 1833.889 578.680 1898.860 17.080 1867.307 579.110 1899.971 19.017 1840.266 578.690 1898.893 17.114 1873.344 579.120 1900.004 19.068 1848.991 578.700 1898.626 17.149 1879.394 579.130 1900.036 19.111 1883.732 578.710 1898.689 17.183 1888.486 579.140 1900.069 19.183 1860.488 578.720 1898.691 17.218 1891.831 579.180 1900.102 19.196 1867.260 578.730 1898.724 17.283 1897.617 579.160 1900.138 19.238 1874.046 578.740 1898.787 17.287 1603.716 579.170 1900.168 19.281 1880.848 578.780 1898.790 17.322 1609.827 579.180 1900.201 19.324 1887.664 578.760 1898.823 17.387 1618.981 579.190 1900.233 19.366 1894.496 578.770 1898.888 17.392 1622.086 579.200 1900.266 19.409 1901.342 578.780 1898.888 17.427 1628.234 579.210 1900.299 19.482 1908.204
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O&M Manual for Karanja Dam January 2020 RL of RL of Countour Cumulative RL of RL of Countour Cumulative counter in counter in Area in capacity in Remark counter counter in Area in capacity in Remark Mtr feet M.Sqm M.Cft s in Mtr feet M.Sqm M.Cft s 579.220 1900.332 19.498 1918.081 579.680 1901.743 21.268 2224.873 579.230 1900.368 19.838 1921.973 579.660 1901.778 21.308 2232.390 579.240 1900.397 19.881 1928.880 579.670 1901.808 21.344 2239.921 579.280 1900.430 19.624 1938.803 579.680 1901.841 21.384 2247.468 579.260 1900.463 19.667 1942.740 579.690 1901.874 21.424 2288.024 579.270 1900.496 19.710 1949.693 579.700 1901.907 21.464 2262.897 579.280 1900.829 19.783 1986.661 579.710 1901.939 21.803 2270.184 579.290 1900.861 19.796 1963.644 579.720 1901.972 21.843 2277.788 579.300 1900.894 19.839 1970.643 579.730 1902.008 21.881 2288.098 579.310 1900.627 19.883 1977.687 579.740 1902.038 21.632 2293.030 579.320 1900.660 19.926 1984.686 579.780 1902.071 21.680 2300.678 579.330 1900.693 19.969 1991.730 579.760 1902.103 21.728 2308.342 579.340 1900.728 20.013 1998.790 579.770 1902.136 21.777 2316.024 579.380 1900.788 20.086 2008.868 579.780 1902.169 21.828 2323.723 579.360 1900.791 20.100 2012.986 579.790 1902.202 21.874 2331.439 579.370 1900.824 20.143 2020.061 579.800 1902.238 21.922 2339.173 579.380 1900.887 20.187 2027.183 579.810 1902.267 21.971 2346.923 579.390 1900.890 20.231 2034.319 579.820 1902.300 22.020 2384.691 579.400 1900.922 20.274 2041.471 579.830 1902.333 22.069 2362.478 579.410 1900.988 20.318 2048.639 579.840 1902.366 22.117 2370.277 579.420 1900.988 20.362 2088.822 579.880 1902.399 22.166 2378.097 579.428 1901.004 20.383 2089.278 579.860 1902.432 22.218 2388.933 579.430 1901.021 20.403 2063.020 579.870 1902.464 22.264 2393.787 579.440 1901.084 20.442 2070.232 579.880 1902.497 22.313 2401.688 579.480 1901.086 20.481 2077.488 579.890 1902.830 22.362 2409.847 579.460 1901.119 20.820 2084.698 579.900 1902.863 22.411 2417.483 579.470 1901.182 20.889 2091.981 579.910 1902.896 22.461 2428.376 579.480 1901.188 20.897 2099.218 579.920 1902.628 22.810 2433.316 579.490 1901.218 20.636 2106.499 579.930 1902.661 22.889 2441.274 579.800 1901.280 20.678 2113.793 579.940 1902.694 22.609 2449.280 579.810 1901.283 20.718 2121.102 579.980 1902.727 22.688 2487.243 579.820 1901.316 20.784 2128.424 579.960 1902.760 22.707 2468.283 579.830 1901.349 20.793 2138.760 579.970 1902.792 22.787 2473.281 579.840 1901.382 20.832 2143.110 579.980 1902.828 22.807 2481.326 579.880 1901.414 20.871 2180.473 579.990 1902.888 22.886 2489.389 579.860 1901.447 20.910 2187.881 580.000 1902.891 22.906 2497.469 579.870 1901.480 20.980 2168.242 580.010 1902.924 22.986 2808.867 579.880 1901.813 20.989 2172.647 580.020 1902.986 23.008 2813.682 579.890 1901.846 21.028 2180.066 580.030 1902.989 23.088 2821.816 579.600 1901.878 21.068 2187.499 580.034 1903.002 23.077 2828.400 579.610 1901.611 21.107 2194.946 580.040 1903.022 23.102 2829.966 579.620 1901.644 21.147 2202.407 580.080 1903.088 23.147 2838.132 579.630 1901.677 21.186 2209.882 580.060 1903.088 23.193 2846.318 579.640 1901.710 21.226 2217.371 580.070 1903.120 23.238 2884.813
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O&M Manual for Karanja Dam January 2020 RL of RL of Countour Cumulative RL of RL of Countour Cumulative counter in counter in Area in capacity in Remark counter counter in Area in capacity in Remark Mtr feet M.Sqm M.Cft s in Mtr feet M.Sqm M.Cft s 580.080 1903.183 23.283 2862.728 580.810 1904.864 28.293 2931.337 580.090 1903.186 23.328 2870.988 580.820 1904.897 28.342 2940.278 580.100 1903.219 23.374 2879.204 580.830 1904.630 28.390 2949.236 580.110 1903.282 23.419 2887.466 580.840 1904.662 28.439 2988.211 580.120 1903.288 23.464 2898.748 580.880 1904.698 28.488 2967.203 580.130 1903.317 23.810 2604.039 580.860 1904.728 28.836 2976.213 580.140 1903.380 23.888 2612.380 580.870 1904.761 28.888 2988.239 580.180 1903.383 23.601 2620.676 580.880 1904.794 28.634 2994.283 580.160 1903.416 23.646 2629.019 580.890 1904.827 28.683 3003.348 580.170 1903.449 23.692 2637.377 580.600 1904.889 28.732 3012.423 580.180 1903.481 23.738 2648.782 580.610 1904.892 28.781 3021.819 580.190 1903.814 23.783 2684.143 580.620 1904.928 28.830 3030.632 580.200 1903.847 23.829 2662.880 580.630 1904.988 28.879 3039.762 580.210 1903.880 23.878 2670.974 580.640 1904.991 28.928 3048.910 580.220 1903.613 23.921 2679.413 580.644 1908.004 28.948 3082.874 580.230 1903.648 23.967 2687.869 580.680 1908.023 28.977 3088.078 580.240 1903.678 24.013 2696.341 580.660 1908.086 26.028 3067.287 580.280 1903.711 24.089 2704.829 580.670 1908.089 26.074 3076.487 580.260 1903.744 24.108 2713.333 580.680 1908.122 26.122 3088.673 580.270 1903.777 24.181 2721.884 580.690 1908.188 26.171 3094.907 580.280 1903.809 24.197 2730.391 580.700 1908.187 26.220 3104.188 580.290 1903.842 24.243 2738.944 580.710 1908.220 26.268 3113.428 580.300 1903.878 24.289 2747.813 580.720 1908.283 26.317 3122.711 580.310 1903.908 24.338 2786.099 580.730 1908.286 26.366 3132.013 580.320 1903.941 24.382 2764.701 580.740 1908.319 26.414 3141.332 580.330 1903.974 24.428 2773.320 580.780 1908.381 26.463 3180.669 580.339 1904.003 24.471 2781.263 580.760 1908.384 26.812 3160.023 580.340 1904.006 24.478 2781.984 580.770 1908.417 26.861 3169.398 580.380 1904.039 24.822 2790.606 580.780 1908.480 26.610 3178.783 580.360 1904.072 24.870 2779.927 580.790 1908.483 26.689 3188.189 580.370 1904.108 24.678 2807.960 580.800 1908.816 26.708 3197.612 580.380 1904.138 24.666 2816.662 580.810 1908.848 26.787 3207.083 580.390 1904.170 24.714 2828.381 580.820 1908.881 26.806 3216.811 580.400 1904.203 24.762 2934.117 580.830 1908.614 26.886 3228.986 580.410 1904.236 24.810 2842.870 580.840 1908.647 26.908 3238.479 580.420 1904.269 24.888 2881.640 580.880 1908.680 26.984 3244.989 580.430 1904.302 24.906 2860.427 580.860 1908.712 27.004 3284.816 580.440 1904.334 24.984 2869.231 580.870 1908.748 27.083 3264.061 580.480 1904.367 28.003 2878.082 580.880 1908.778 27.102 3273.623 580.460 1904.400 28.081 2886.890 580.890 1908.811 27.182 3283.203 580.470 1904.433 28.099 2898.746 580.900 1908.844 27.201 3292.801 580.480 1904.466 28.148 2904.618 580.910 1908.876 27.281 3302.418 580.490 1904.498 28.196 2913.807 580.920 1908.909 27.300 3312.048 580.800 1904.831 28.248 2922.414 580.930 1908.942 27.380 3321.697
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O&M Manual for Karanja Dam January 2020 RL of RL of Countour Cumulative RL of RL of Countour Cumulative counter in counter in Area in capacity in Remark counter counter in Area in capacity in Remark Mtr feet M.Sqm M.Cft s in Mtr feet M.Sqm M.Cft s 580.940 1908.978 27.400 3331.368 581.360 1907.383 29.829 3783.418 580.949 1906.004 27.444 3339.887 581.370 1907.386 29.882 3763.882 580.980 1906.008 27.480 3341.080 581.380 1907.418 29.634 3774.308 580.960 1906.040 27.499 3380.782 581.390 1907.481 29.686 3784.783 580.970 1906.073 27.849 3360.472 581.400 1907.484 29.739 3798.278 580.980 1906.106 27.899 3370.210 581.410 1907.817 29.791 3808.787 580.990 1906.139 27.648 3379.968 581.420 1907.880 29.844 3816.317 581.000 1906.172 27.698 3389.738 581.430 1907.882 29.896 3826.868 581.010 1906.204 27.748 3399.828 581.440 1907.618 29.949 3837.432 581.020 1906.237 27.798 3409.336 581.480 1907.648 30.001 3848.018 581.030 1906.270 27.848 3419.161 581.460 1907.681 30.084 3888.622 581.040 1906.303 27.898 3429.008 581.470 1907.714 30.107 3869.244 581.080 1906.336 27.948 3438.868 581.480 1907.746 30.189 3879.886 581.060 1906.369 27.998 3448.744 581.490 1907.779 30.212 3890.846 581.070 1906.401 28.048 3488.640 581.800 1907.812 30.268 3901.224 581.080 1906.434 28.098 3468.884 581.810 1907.848 30.318 3911.922 581.090 1906.467 28.149 3478.486 581.820 1907.878 30.371 3922.638 581.100 1906.800 28.199 3488.438 581.830 1907.911 30.424 3933.372 581.110 1906.833 28.249 3498.402 581.840 1907.943 30.477 3944.126 581.120 1906.868 28.299 3808.387 581.880 1907.976 3.830 3984.898 581.130 1906.898 28.380 3818.390 581.888 1908.002 30.874 3963.961 581.140 1906.631 28.400 3828.411 581.860 1908.009 30.883 3968.689 581.180 1906.664 28.481 3838.449 581.870 1908.042 30.634 3976.498 581.160 1906.697 28.801 3848.808 581.880 1908.078 30.686 3987.328 581.170 1906.729 28.882 3888.879 581.890 1908.107 30.737 3998.171 581.180 1906.762 28.603 3868.671 581.600 1908.140 30.789 4009.038 581.190 1906.798 28.683 3878.781 581.610 1908.173 30.841 4019.917 581.200 1906.828 28.704 3888.909 581.620 1908.206 30.892 4030.817 581.210 1906.861 28.788 3899.088 581.630 1908.239 30.944 4041.736 581.220 1906.893 28.808 3609.218 581.640 1908.271 30.996 4082.673 581.230 1906.926 28.886 3619.400 581.680 1908.304 31.048 4063.628 581.240 1906.989 28.907 3629.899 581.660 1908.337 31.100 4074.601 581.280 1906.992 28.988 3639.817 581.670 1908.370 31.181 4088.893 581.284 1907.008 28.977 3643.499 581.680 1908.403 31.203 4096.603 581.260 1907.028 29.010 3680.082 581.690 1908.438 31.288 4107.632 581.270 1907.088 29.016 3660.306 581.700 1908.468 31.307 4118.679 581.280 1907.090 29.113 3670.878 581.710 1908.801 31.360 4129.744 581.290 1907.123 29.168 3680.868 581.720 1908.834 31.412 4140.828 581.300 1907.186 29.217 3691.177 581.730 1908.867 31.464 4181.930 581.310 1907.189 29.269 3701.804 581.740 1908.600 31.816 4163.081 581.320 1907.222 29.321 3711.849 581.780 1908.632 31.868 4174.190 581.330 1907.284 29.373 3722.213 581.760 1908.668 31.621 4188.347 581.340 1907.287 29.428 3732.898 581.770 1908.698 31.673 4196.823 581.380 1907.320 29.477 3742.996 581.780 1908.731 31.728 4207.718
48
O&M Manual for Karanja Dam January 2020 RL of RL of Countour Cumulative RL of RL of Countour Cumulative counter in counter in Area in capacity in Remark counter counter in Area in capacity in Remark Mtr feet M.Sqm M.Cft s in Mtr feet M.Sqm M.Cft s 581.790 1908.764 31.778 4218.931 582.210 1910.142 34.187 4707.391 581.800 1908.796 31.830 4230.162 582.220 1910.174 34.262 4719.477 581.810 1908.829 31.883 4241.412 582.230 1910.207 34.338 4731.890 581.820 1908.862 31.938 4282.681 582.240 1910.240 34.414 4743.730 581.830 1908.898 31.988 4263.968 582.280 1910.273 34.490 4788.897 581.840 1908.928 32.041 4278.274 582.260 1910.306 34.866 4768.090 581.880 1908.960 32.093 4286.898 582.270 1910.338 34.642 4780.310 581.860 1908.993 32.146 4297.941 582.280 1910.371 34.719 4792.888 581.863 1909.003 32.163 4301.878 582.290 1910.404 34.798 4804.832 581.870 1909.026 32.201 4309.303 582.300 1910.437 34.871 4817.133 581.880 1909.089 32.286 4320.684 582.310 1910.470 34.948 4829.461 581.890 1909.092 31.311 4332.088 582.320 1910.802 38.024 4841.816 581.900 1909.124 32.367 4343.808 582.330 1910.535 35.101 4854.199 581.910 1909.157 32.422 4354.945 582.340 1910.568 35.178 4866.608 581.920 1909.190 32.478 4366.405 582.350 1910.601 35.254 4879.044 581.930 1909.223 32.533 4377.884 582.360 1910.634 35.331 4891.508 581.940 1909.256 32.589 4389.383 582.370 1910.666 35.408 4903.998 581.950 1909.288 32.645 4400.902 582.380 1910.699 35.485 4916.516 581.960 1909.321 32.700 4412.440 582.390 1910.732 35.562 4929.061 581.970 1909.354 32.756 4423.997 582.400 1910.765 35.640 4941.634 581.980 1909.387 32.812 4435.575 582.410 1910.798 35.717 4954.233 581.990 1909.420 32.868 4447.172 582.420 1910.830 35.794 4966.860 582.000 1909.453 36.924 4458.789 582.430 1910.863 35.872 4979.515 582.010 1909.485 32.980 4470.426 582.440 1910.896 35.949 4992.196 582.020 1909.518 33.036 4482.082 582.450 1910.929 36.027 5004.906 582.030 1909.551 33.092 4493.759 582.460 1910.962 36.105 5017.642 582.040 1909.584 33.148 4505.455 582.470 1910.995 36.183 5030.406 582.050 1909.617 33.204 4517.171 582.473 1911.004 36.204 5033.985 582.060 1909.649 33.260 4528.906 582.480 1911.027 36.260 5043.197 582.070 1909.682 33.316 4540.662 582.490 1911.060 36.337 5056.016 582.080 1909.715 33.372 4552.437 582.500 1911.093 36.414 5068.862 582.090 1909.748 33.429 4564.232 582.510 1911.126 36.492 5081.735 582.100 1909.781 33.485 4576.048 582.520 1911.159 36.569 5094.636 582.110 1909.813 33.542 4587.883 582.530 1911.191 36.647 5107.564 582.120 1909.846 33.598 4599.738 582.540 1911.224 36.724 5120.519 582.130 1909.879 33.655 4611.613 582.550 1911.257 36.802 5133.502 582.140 1909.912 33.711 4623.508 582.560 1911.290 36.880 5146.512 582.150 1909.945 33.768 4635.423 582.570 1911.323 36.957 5159.550 582.160 1909.977 33.824 4647.358 582.580 1911.355 37.035 5172.615 582.168 1910.004 33.870 4656.920 582.590 1911.388 37.113 5185.708 582.170 1910.010 33.885 4659.313 582.600 1911.421 37.191 5198.828 582.180 1910.043 33.960 4671.292 582.610 1911.454 37.270 5211.976 582.190 1910.076 34.036 4683.298 582.620 1911.487 37.348 5225.151 582.200 1910.109 34.111 4695.331 582.630 1911.519 37.426 5238.354
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O&M Manual for Karanja Dam January 2020 RL of RL of Countour Cumulative RL of RL of Countour Cumulative counter in counter in Area in capacity in Remark counter counter in Area in capacity in Remark Mtr feet M.Sqm M.Cft s in Mtr feet M.Sqm M.Cft s 582.640 1911.552 37.505 5251.585 583.070 1912.963 41.979 5847.229 582.650 1911.585 37.583 5264.843 583.080 1912.996 41.062 5861.716 582.660 1911.618 37.662 5278.130 583.082 1913.002 41.082 5865.197 582.670 1911.651 37.740 5291.444 583.090 1913.029 41.145 5876.231 582.680 1911.684 37.819 5304.785 583.100 1913.061 41.227 5890.776 582.690 1911.716 37.898 5318.155 583.110 1913.094 41.310 5905.350 582.700 1911.749 37.977 5331.552 583.120 1913.127 41.393 5919.953 582.710 1911.782 38.056 5344.978 583.130 1913.160 41.476 5934.585 582.720 1911.815 38.135 5358.431 583.140 1913.193 41.559 5949.247 582.730 1911.848 38.214 5371.912 583.150 1913.226 41.642 5963.938 582.740 1911.880 38.293 5385.421 583.160 1913.258 41.725 5978.658 582.750 1911.913 38.373 5398.959 583.170 1913.291 41.808 5993.408 582.760 1911.946 38.452 5412.524 583.180 1913.324 41.891 6008.187 582.770 1911.979 38.532 5426.117 583.190 1913.357 41.975 6022.995 582.778 1912.005 38.592 5436.467 583.200 1913.390 42.058 6037.833 582.780 1912.012 38.611 5439.738 583.210 1913.422 42.142 6052.701 582.790 1912.044 38.692 5453.388 583.220 1913.455 42.226 6067.598 582.800 1912.077 38.772 5467.066 583.230 1913.488 42.309 6082.524 582.810 1912.110 38.853 5480.772 583.240 1913.521 42.393 6097.481 582.820 1912.143 38.934 5494.507 583.250 1913.554 42.477 6112.466 582.830 1912.176 39.014 5508.271 583.260 1913.586 42.561 6127.482 582.840 1912.208 39.095 5522.063 583.270 1913.619 42.645 6142.527 582.850 1912.241 39.176 5535.884 583.280 1913.652 42.729 6157.602 582.860 1912.274 39.257 5549.733 583.290 1913.685 42.814 6172.706 582.870 1912.307 39.339 5563.611 583.300 1913.718 42.898 6187.841 582.880 1912.340 39.420 5577.518 583.310 1913.750 42.982 6203.005 582.890 1912.372 39.501 5591.453 583.320 1913.783 43.067 6218.199 582.900 1912.405 39.582 5605.417 583.330 1913.816 43.151 6233.422 582.910 1912.438 39.664 5619.410 583.340 1913.849 43.236 6248.676 582.920 1912.471 39.746 5633.431 583.350 1913.882 43.321 6263.960 582.930 1912.504 39.827 5647.482 583.360 1913.914 43.405 6279.273 582.940 1912.537 39.909 5664.561 583.370 1913.947 43.490 6294.617 582.950 1912.569 39.991 5675.669 583.380 1913.980 43.575 6309.990 582.960 1912.602 40.073 5689.806 583.387 1914.003 43.637 6321.078 582.970 1912.635 40.155 5703.972 583.390 1914.013 43.661 6325.394 582.980 1912.668 40.237 5718.167 583.400 1914.046 43.746 6340.827 582.990 1912.701 40.319 5732.391 583.410 1914.079 43.832 6356.291 583.000 1912.733 40.401 5746.644 583.420 1914.111 43.918 6371.786 583.010 1912.766 40.483 5760.926 583.430 1914.144 44.004 6387.311 583.020 1912.799 40.566 5775.237 583.440 1914.177 44.090 6402.866 583.030 1912.832 40.648 5789.577 583.450 1914.210 44.177 6418.451 583.040 1912.865 40.731 5803.946 583.460 1914.243 44.263 6434.067 583.050 1912.897 40.813 5818.345 583.470 1914.275 44.349 6449.714 583.060 1912.930 40.896 5832.773 583.480 1914.308 44.436 6465.391
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O&M Manual for Karanja Dam January 2020 RL of RL of Countour Cumulative RL of RL of Countour Cumulative counter in counter in Area in capacity in Remark counter counter in Area in capacity in Remark Mtr feet M.Sqm M.Cft s in Mtr feet M.Sqm M.Cft s 583.490 1914.341 44.522 6481.099 583.920 1915.752 49.485 7190.481 583.500 1914.374 44.261 6496.837 583.930 1915.785 49.628 7207.982 583.510 1914.407 44.696 6512.605 583.940 1915.817 49.771 7225.533 583.520 1914.439 44.782 6528.405 583.950 1915.850 49.914 7243.135 583.530 1914.472 44.869 6544.235 583.960 1915.883 50.057 7260.787 583.540 1914.505 44.956 6560.096 583.970 1915.916 50.200 7278.489 583.550 1914.538 45.043 6575.987 583.980 1915.949 50.344 7296.243 583.560 1914.571 45.131 6591.910 583.990 1915.981 50.488 7314.047 583.570 1914.603 45.218 6607.863 583.997 1916.004 50.586 7326.183 583.580 1914.636 45.305 6623.847 584.000 1916.014 50.619 7331.901 583.590 1914.669 45.392 6639.861 584.010 1916.047 50.722 7349.795 583.600 1914.702 45.480 6655.907 584.020 1916.080 50.826 7367.726 583.610 1914.735 45.567 6671.986 584.030 1916.113 50.929 7385.693 583.620 1914.767 45.655 6688.091 584.040 1916.145 51.033 7403.697 583.630 1914.800 45.743 6704.229 584.050 1916.178 51.137 7421.737 583.640 1914.833 45.831 6720.399 584.060 1916.211 51.240 7439.814 583.650 1914.866 45.919 6736.599 584.070 1916.244 51.344 7457.928 583.660 1914.899 46.007 6752.831 584.080 1916.277 50.448 7476.078 583.670 1914.932 46.095 6769.093 584.090 1916.309 51.553 7494.265 583.680 1914.964 46.183 6785.387 584.100 1916.342 51.657 7512.489 583.690 1914.997 46.271 6801.712 584.110 1916.375 51.761 7530.750 583.692 1915.004 46.289 6804.981 584.120 1916.408 51.866 7549.048 583.700 1915.030 46.399 6818.074 584.130 1916.441 51.970 7567.383 583.710 1915.063 46.537 6834.484 584.140 1916.474 52.075 7585.754 583.720 1915.096 46.675 6850.942 584.150 1916.506 52.180 7604.163 FRL 583.730 1915.128 46.814 6867.450 584.302 1917.005 53.782 7887.795 583.740 1915.161 46.953 6884.007 584.606 1918.002 57.098 8484.456 583.750 1915.194 47.092 6900.612 584.911 1919.003 60.480 9117.169 583.760 1915.227 47.231 6917.267 585.216 1920.004 64.020 9787.129 583.770 1915.260 47.370 6933.971 583.780 1915.292 47.510 6950.725 583.790 1915.325 47.649 6967.527 583.800 1915.358 47.789 6984.379 583.810 1915.391 47.930 7001.280 583.820 1915.424 48.070 7018.231 583.830 1915.456 48.211 7035.232 583.840 1915.489 48.351 7052.282 583.850 1915.522 48.492 7069.382 583.860 1915.555 48.634 7086.532 583.870 1915.588 48.775 7103.732 583.880 1915.621 48.917 7120.981 583.890 1915.653 49.058 7138.281 583.900 1915.686 49.200 7155.631 583.910 1915.719 49.343 7173.031
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O&M Manual for Karanja Dam January 2020
Figure-7 Area of capacity Curve
584.452
582.452
580.452
578.452
576.452 capacity curve
574.452
572.452
570.452
568.452 0.0000 750.0000 1500.0000 2250.0000 3000.0000 3750.0000 4500.0000 5250.0000 6000.0000 6750.0000 7500.0000 8250.0000 9000.0000 9750.0000
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O&M Manual for Karanja Dam January 2020
Capacity- Elevation curve or water spread area curve
Figure-8 Elevation curve or water spread area curve 586.45
584.45
582.45
580.45
578.45
576.45
574.45
572.45
570.45
568.45 0.0000 5.0000 10.0000 15.0000 20.0000 25.0000 30.0000 35.0000 40.0000 45.0000 50.0000 55.0000 60.0000 65.0000
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O&M Manual for Karanja Dam January 2020
Table-9 For the Year 2002-2003 in Karanja Dam Rate of change of reservoir storage
Storage of water in Mcft RL 579.70 2262.54
580.15 2626.9 580.40 2903.44 580.63 3039.52 580.89 3284.49 581.29 3687.81 281.36 3753.47 581.49 3898.19 581.76 4182.45 581.90 4344.88 582.19 4689.62 582.41 4953.14 583.60 5193.76
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O&M Manual for Karanja Dam January 2020
Figure-9 For the Year 2002-2003 in Karanja Dam Rate of change of reservoir storage curve 5600
5100
4600
4100
3600
3100
2600 Storage capacity
Storage capacity 2100
1600
1100
600
100 579.70 580.15 580.40 580.63 580.89 581.29 281.36 581.49 581.76 581.90 582.19 582.41 583.60 Resevior level
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O&M Manual for Karanja Dam January 2020
2.1.2 Design Flood and Features Related to Safety The maximum flood design at Karanja Dam site was earlier fixed at 4.69 lakhs cusecs. This was based on the frequency studies for a return period of 100 years with 95% upper continent limit recommended by the Panel of Experts appointed for this purpose The spillway is designed for this design flood with 10-percent of the gates non-operative. The design flood has been reviewed under DRIP. The surplusing capacity of the spillway was checked for the revised designed flood (PMF) of 18827.86 or 6.65 cusecs with all the gates operative and is considered to be safe. Computation of Flood Hydrograph for Karanja Dam Table 10- Peak Flows vs. Return Periods Time Hrs Total Time Hrs Total Time Hrs Total discarge in discarge in discarge in Cumcs Cumcs Cumcs 0 101 29 14007 58 101 1 103 30 16060 2 106 31 17968 3 112 32 18761 =662555(Cusecs) say 6.65 Lakhs cusecs 4 122 33 17677 5 138 34 16027 6 162 35 14495 7 195 36 13042 8 255 37 11733 9 332 38 10534 10 427 39 9481 11 539 40 8406 12 666 41 7439 13 820 42 6527 14 992 43 5668 15 1198 44 4946 16 1434 45 4369 17 1713 46 3755 18 2042 47 3236 19 2427 48 2761 20 3105 49 2304 21 3816 50 1863 22 4660 51 1441 23 5652 52 1038 24 6769 53 656 25 8031 54 313 26 9329 55 188 27 10746 56 136 28 1281 57 111
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O&M Manual for Karanja Dam January 2020
Figure -10 -PMF@Karanja Dam(peak flood=18761 Cumcs(662555 Cusecs) 20000 19000 18000 17000 16000 15000 14000 13000 12000 11000 10000 9000 Total discarge in Cumcs
Discharge in cumecs in Discharge 8000 7000 6000 5000 4000 3000 2000 1000 0 0 10 20 30 40 50 60 70 Time in Hour
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O&M Manual for Karanja Dam January 2020 2.2 Flood Management at Karanja Reservoir
2.2.1 Gate Operations: The Govt of Karnataka have issued a circular for the gate operation of Karanja reservoir which is as below DISCHARGE CHARACTERSTICS OF GATE . The discharging capacity of spillway gates/river sluice gates at different reservoir levels for each gate and for all gates for different gate opening have been computed and displayed in the gate operation room. The Karnataka Engineering Research Station (KERS) has carried out model studies of Karanja reservoir spillway and generated a table indicating the discharge with reference to gate opening versus reservoir level and also for free-flowing condition which is being used for measurement of discharge through spillway crest gates. The discharges through river sluices and irrigation sluices are being determined by the formula Q= 0.85*sqrt(2gH) *A. Where: A = Area of sluice gate opening. G = Acceleration due to gravity. H = Height measured from water level in the reservoir to the center of the opening.
It is as curtained that the time required for the water to flow into the Karanja Reservoir from the catchment during rainy season is six hours. The safe discharge from Karanja reservoir into the river is 30,000 cusecs. The Karanja reservoir has no flood absorption storage capacity above F.R.L. Hence it is indicated to have the flood absorption capacity in the reservoir to the extent of 1 to 2 T.M.C during monsoon period. RESERVOIR OPERATION SCHEDULE: It is proposed to have 2 T.M.C ft. storage capacity as flood absorption below F.R.L during active monsoon so as to have safe and effective reservoir operation schedule.
The Gross storage capacity and reservoir level with 2 T.M.C ft., flood absorption capacity below F.R.L is as shown below:- Table 11- Details Showing the flood absorption capacity
Reservoir level In feet Capacity in Mcft. Difference in Capacity b/n F.R.L. 1907.218 3711 200 M.C ft. R.L 1907.841 3911 869 M.C ft R.L 1910.335 4780
The rainfall in the catchment area generally starts from 1st week of June and it is very heavy generally during July, August and September Months. The recorded inflow in to the reservoir from 1990-2018 is as given below:-
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O&M Manual for Karanja Dam January 2020
Table 12-Table showing the recorded inflow into the reservoir during Manson period INFLOW DETAILS OF KARANJA RESERVIOR FOR THE PERIOD FROM 1990 TO 2018 TOTA JULY SEPT OCT NOV DEC JAN FEB MAR MAY SL Maximum water Grass.St JUNE AUG APRIL L inflow inflow inflow inflow inflow inflo inflow inflow inflow N YEAR level stored During ore inflow in inflow inflow inflow in in in in in w in in in in O the year in mtrs in Mcft Mcft in Mcft in Mcft in Mcft Mcft Mcft Mcft Mcft Mcft Mcft Mcft Mcft Mcft 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 577.88 27826.2 ( Minimum reservoir level) 1142.51 4137.07 265.32 13804.78 1682.78 5878.71 1144.97 406.37 0.00 0.00 0.00 30.50 475.70 0 1 1990-91 579.45 (Maximum water level) 2077.45
577.70 ( Minimum reservoir level) 1062.61 477.52 3749.18 942.77 88.32 112.91 109.51 184.17 7.00 0.00 5.38 5.16 0.00 5681.92
2 1991-92 578.60 (Maximum water level) 1519.44
574.15 ( Minimum reservoir level) 229.51 0.00 37.62 321.90 411.41 46.92 147.66 47.34 60.84 40.76 25.94 17.25 9.30 1166.94 3 1992-93 578.00 (Maximum water level) 1198.65
574.15 ( Minimum reservoir level) 229.15 0.00 416.86 37.63 181.94 816.12 13.82 0.00 56.16 42.12 47.35 41.01 211.08 1864.09 4 1993-94 578.60 (Maximum water level) 1519.44
574.15 ( Minimum reservoir level) 229.15 0.00 0.00 0.00 0.00 661.73 0.00 0.00 0.00 0.00 0.00 162.29 77.09 901.11 5 1994-95 575.80 (Maximum water level) 491.00 574.15 ( Minimum reservoir level) 229.15 74.46 213.57 103.51 335.69 4168.54 62.47 81.06 0.00 0.00 369.53 0.00 0.00 5408.83 6 1995-96 580.00 (Maximum water level) 2497.46 578.20 11110.6 19245.4 7 1996-97 ( Minimum reservoir level) 1297.36 80.70 383.18 3350.21 3616.66 406.51 78.19 95.90 23.33 0.00 0.00 100.17 3 8
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O&M Manual for Karanja Dam January 2020
579.95 (Maximum water level) 2457.24 578.70 ( Minimum reservoir level) 1579.39 39.25 114.84 53.40 139.40 100.90 387.33 186.15 100.22 93.31 105.41 64.80 104.54 1489.55 8 1997-98 579.75 (Maximum water level) 2300.67
577.70 16039.4 ( Minimum reservoir level) 1579.39 0.00 132.18 1621.05 3729.62 9139.81 376.50 468.77 54.43 0.00 241.92 240.62 34.56 6 9 1998-99 581.50 (Maximum water level) 3901.22 578.10 ( Minimum reservoir level) 1247.19 26.89 255.77 1038.23 3943.40 1620.46 52.69 0.00 608.06 0.00 0.00 0.00 158.83 7704.33
10 1999-2000 581.80 (Maximum water level) 4230.16
579.00( Minimum reservoir level) 1767.47 389.24 772.37 1482.55 472.30 344.71 232.28 0.00 53.14 0.00 0.00 0.00 0.00 3746.59 11 2000-01 582.00 (Maximum water level) 4458.78
578.20 ( Minimum reservoir level) 1297.36 93.68 220.32 343.82 395.08 3129.51 241.92 155.52 0.00 0.00 0.00 21.60 145.15 4746.60 12 2001-02 581.90 (Maximum water level) 4343.50
578.80 ( Minimum reservoir level) 1640.56 364.36 276.54 136.08 244.97 403.32 65.66 144.72 284.26 162.43 344.74 263.52 240.62 2931.22 13 2002-03 579.70 (Maximum water level) 2262.59
576.50 ( Minimum reservoir level) 649.65 183.35 385.02 1522.51 126.02 50.11 46.66 80.35 273.60 1434.67 238.73 112.79 3527.77 7981.58 14 2003-04 579.65 (Maximum water level) 2187.49
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O&M Manual for Karanja Dam January 2020
578.68 ( Minimum reservoir level) 1567.30 139.00 443.86 69.24 363.03 337.99 39.14 116.32 90.71 67.66 85.17 69.75 216.97 2038.84 15 2004-05 578.45 (Maximum water level) 1432.00
574.15 ( Minimum reservoir level) 229.51 46.66 326.89 114.69 1227.54 675.52 51.81 67.00 48.38 51.93 24.19 29.38 73.28 2737.27 16 2005-06 579.90 (Maximum water level) 2417.15
577.35 ( Minimum reservoir level) 921.43 97.41 142.98 465.10 743.52 286.10 0.00 0.00 73.62 90.57 1292.16 122.03 156.31 3469.80 17 2006-07 579.60 (Maximum water level) 2187.49
576.60 ( Minimum reservoir level) 676.76 248.00 0.00 323.00 1320.00 108.09 347.65 170.67 236.20 25.05 47.69 65.92 95.08 2987.35 18 2007-08 580.05 (Maximum water level) 2538.13
575.70 ( Minimum reservoir level) 471.33 0.00 60.82 1466.56 2779.33 417.83 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4724.54 19 2008-09 583.10 (Maximum water level) 5874.15 580.70 ( Minimum reservoir level) 3104.15 140.83 0.00 497.75 706.67 1707.79 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3053.04 20 2009-10 583.05 (Maximum water level) 5806.43
580.00 10342.0 ( Minimum reservoir level) 2497.46 71.00 1606.00 3892.00 2598.00 1631.00 544.00 0.00 0.00 0.00 0.00 0.00 0.00 0 21 2010-11 583.50 (Maximum water level) 6466.66
580.65( Minimum reservoir 22 2011-12 level) 3058.07 0.00 176.00 705.00 445.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1326.00
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582.75 (Maximum water level) 5398.95
579.00 ( Minimum reservoir level) 1767.47 543.000 429.00 104.00 370.000 158.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1604.00 23 2012-13 580.00 (Maximum water level) 2497.46
576.20 1940.00 ( Minimum reservoir level) 575.54 0.00 990.00 390.000 1244.00 69.00 0.00 0.00 0.00 0.00 0.00 4633.00 0 24 2013-14 582.60 (Maximum water level) 5198.82
579.15 ( Minimum reservoir level) 1867.25 0.00 0.00 158.000 84.000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 242.00 25 2014-15 580.05 (Maximum water level) 2538.13
579.95 ( Minimum reservoir level) 781.57 0.00 0.00 0.000 143.000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 143.00 26 2015-16 577.80 (Maximum water level) 1106.37
574.85 5202.00 2407.91 ( Minimum reservoir level) 329.00 262.00 243.00 45.000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 8159.92 2016-17 0 7 27 (01-jun16 to 31-May 17) 583.85 (Maximum water level) 7039.20
581.89 ( Minimum reservoir level) 2017-18 4332.00 643.00 50.00 1282.00 840.00 1545.0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4360.00 27 (01-jun17 to 31-May 18) 583.90 (Maximum water level) 7125.00 581.66 ( Minimum reservoir level) 4074.00 77.00 0.00 52.00 20.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 149.00 2018-19 28 (01-jun18 to
31-May 19) (Maximum water level)
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Figure-11-Table showing the recorded inflow into the reservoir during Monsoon period INFLOW DETAILS OF KARANJA RESERVIOR FOR THE PERIOD FROM 1990 TO 2018-19
30000 in Mcft 29000 28000 27000 26000 25000 24000 23000 22000 21000 20000 19000 18000 17000 16000 15000 14000 13000 12000
Inflow Mcft inf in Mcft 11000 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 0
year
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O&M Manual for Karanja Dam January 2020 The rainfall in the catchment area generally starts from 1st week of June and it is very heavy generally during July, August and September Months.The recorded inflow in to the reservoir from 1990-2019 is as given below:-
If the flood absorption capacity of 1.00 TMC maintained the reservoir level has to be kept at 583.15 mtr(1913.22ft). i.e., 1.00 mtr(3.281ft). below F.R.L. As the maximum inflow into the reservoir during the month of July and August is of the order of 7.6910 TMC .as against the gross storage capacity of 6.00 TMC.It is better to start the reservoir operation schedule duly predicting the inflow into the reservoir based on gauged discharge at karanja dam gauge sites and also from the daily rainfall records of upstream rain gauge station in the catchment from 1st week of June itself. However the reservoir level of R.L. with a cushion of 3.281 ft. should be maintained till the end of August by suitably matching the inflow and outflow discharges. During the month of September depending upon the inflow pattern, the reservoir water level may be raised to safer level (i.e, 3.281 ft. below F.R.L).From October and onwards the reservoir water level may be brought to the F.R.L level, depending upon the inflow pattern and forecast of floods/monsoon. If any flash floods or cyclonic floods are expected during October/November, careful prediction of inflows from the upper gauge stations from the rain gauge stations and from weather forecast should be done and the reservoir operation in advance to keep cushion for the inflow has to be carefully done. Advance warning with quantity of water to be released into the river should be intimated to the concerned Deputy Commissioners of Bidar, Bidar superintendent of Police, Irrigation Superintending Engineer IPCC Kalburgi, and concerned Tahasildars through mobile phone. A wide publicity through Radio, T.V. and Daily News papers to this effect should be issued. These instructions should be followed scrupulously and action taken to be reported immediately. Crisis Management Team in Central Office ‘A’ ‘B’ Team Team Superintending Engineer Dy. Chief Engineer, O/o Chief Engineer, Technical Assistant Technical Assistant O/o Chief Engineer, O/o Superintending Engineer Assistant Engineer Assistant Engineer O/o Chief Engineer, O/o Superintending Engineer (Similar teams at Division level and Sub Division level should be formed)
The duties of Superintending Engineer is to monitor for the flood operation from July to November. He should bring it to the notice of Chief Engineer day to day flood discharge and when the inflow/outflow increases more than 20,000 cusecs, hourly inflow and outflow should be intimated. The other two Officers should as is the Superintending Engineer in carrying out his duties. In the absence of Chief Engineer from Headquarters Superintending Engineer should carry out the duties of Chief Engineer
2.2.2 Rule Curve The Karanja Reservoir Rule curve is developed month vs storage capacity and month vs reservoir level for the FRL of 584.15 mtr. and the same is shown in tabular as well as graphical forms below.
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Figure 12–Rule Curve of Karanja Reservoir and Table-13 RULE CURVE OF KARANJA RESERVOIR Upper (Year 2017) - 5% annual probability of exceedance Jun 1F Jun 2F Jul 1F Jul 2F Aug 1F Aug 2F Sep 1F Sep 2F Oct 1F Oct 2F Nov 1F Nov 2F Dec 1F Dec 2F Jan 1F Jan 2F Feb 1F Feb 2F Mar 1F Mar 2F Apr 1F Apr 2F May 1F May 2F MSL 582.00 582.39 582.32 582.30 582.22 583.05 583.20 583.58 583.90 583.80 583.77 583.67 583.56 583.43 583.58 583.47 583.40 583.31 583.23 583.07 582.97 582.69 582.56 582.38
Lower (Year 2001) - 75% annual probability of exceedance Jun 1F Jun 2F Jul 1F Jul 2F Aug 1F Aug 2F Sep 1F Sep 2F Oct 1F Oct 2F Nov 1F Nov 2F Dec 1F Dec 2F Jan 1F Jan 2F Feb 1F Feb 2F Mar 1F Mar 2F Apr 1F Apr 2F May 1F May 2F MSL 578.55 578.55 578.45 578.20 578.20 578.55 578.80 578.80 579.20 581.80 581.85 581.65 581.55 581.30 580.55 580.40 580.15 580.00 579.85 579.65 579.45 579.10 578.85 578.70
Upper Limit (Year 2017) Reservoir Normal Operations Rule Curve Lower Limit (Year 2001) 585.00 583.9 583.8 583.8 583.6 583.7 583.6 583.6 583.5 584.00 583.4 583.4 583.3 583.2 583.0 583.2 583.1 583.0 582.7 582.6 583.00 582.4 582.3 582.3 582.4 582.0 582.2 582.00 581.8 581.8 581.00 581.7 581.5 581.3 580.00 580.5 580.4 580.2 580.0 579.8 579.00 579.7 579.4 579.2 579.1 578.8 578.8 578.8 578.7 578.00 578.5 578.5 578.4 578.5 578.2 578.2 577.00 Reservoir Level Reservoir (feet) 576.00
575.00 Jun 1F Jun 2F Jul 1F Jul 2F Aug 1F Aug Sep 1F Sep 2FOct 1FOct 2F Nov Nov Dec 1F Dec Jan 1F Jan 2F Feb 1FFeb 2FMar 1F Mar Apr 1FApr 2F May May 2F 1F 2F 2F 2F 1F 2F Time (Fortnight)
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2.2.3 Flood Peaks of Different Return Periods The flood peaks for different return periods shown in the table and figure below are as follows: Table 14 – Return Flow Peak Flows vs. Return Period Data year Peak Flow Design flood Cumecs. Cusecs. 1989 Previous design flood 13578.60 46900 2015 Revised design flood 18827.86 665000
Based on this, applying the Gumbel method for flood frequencies, the 3- year flood -works out to 3.3 lakh cusecs. Hence, inflows less than 3 lakh cusecs are considered as normal, and the gates are operated as recommended in earlier and subsequent paragraphs. For inflows exceeding 3 lakh cusecs, it is recommended that the flood regulator procedure described in subsequent paragraphs be followed. After the flood subsides, normaloperation isresumed. 2.2.4 Gate Operation Procedures for Normal Flow conditions During normal flow condition, the spillway radial crest gates will not be operated or are kept in closed condition unless and otherwise there is a flash flood. The river sluice gates will be operated only during the service & the discharge required for irrigating the command area coming under the century old anicut canals in the river and also for the drinking water purpose for the villages coming all along the river will be fulfilled by the hydro-power plant. Regarding the irrigation sluice gates is concerned, the gates will be operated to allow the required discharge through the irrigation canals Table 15 -Details showing the monthly recommended water releases to the irrigation and drinking water supply.
Recommended water releases in Mcft Month Irrigation in Drinking Water Supply Cumes in cumecs 2011 134.99 83.77 2012 51.49 83.77 2013 17.92 83.77 2014 38.56 83.77 2015 0.00 83.77 2016 9.97 83.77 2017 151.84 83.77 2018 6.71 83.77
2.2.5 Inflow Forecasting The gross storage of Karanja Dam at FRL 584.15 m is 7.691 TMC and Gross storage The Karanja a Dams have been designed for a probable maximum flood (PMF) of 4.691 Lakhs cumecs respectively. The storage in Karanja Dam has commenced during year 1989.
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During monsoon, incident rains in the catchment area cause the flash floods in Krishna river. These floods may lead to problems like people getting displaced from their homes, huge damage to crops and other assets. The floods can have disastrous impact on the environment also. Adequate measures are required to be taken up in advance to control and regulate the flow water in the river. The regulation of flood water released from the Dams in Maharashtra is very important and has a most impact in Karnataka. The following measures are essential for effective management of floods in Krishna River during the monsoons. 1) Nomination of liaising officers for respective reservoirs. 2) Sharing of Sub-basin wise directory of concerned officers responsible for flood management. 3) Exchange of data regarding rainfall, releases from dams, reservoir water levels. 4) Reservoir operation schedules. Exchange of data regarding rainfall, releases from dams, reservoir water levels. The Central water Commission has established office at Karanja during 1989 for assisting in flood warning in the Godavari River Basin. Based on the rainfall in the catchment and flow in the river and tributaries, CWC office will furnish flood forecasting reports to office of Karnataka, whenever probable flow at Karanja is more than 50000 cusecs. It also informs the trend of flow (Raising, steady or Falling) The list of rain gauges in the catchment of Krishna basin and daily rainfall is to be collected by concerned offices. It will helpful for prediction of probable floods in the river. During monsoon daily water releases from the Dams/Barrages at 8 hrs.& 16 hrs. in normal situation and hourly data exchange during heavy floods is necessary. In this regard, the data is required to be established. The data regarding exchange floods is made available to the Revenue authorities and public by broadcasting in AIR,TV and publication in new papers. Flood warning system in catchment area: The regulation of flood from the dams on upstream of Karanja reservoir is very crucial to quantify the inflow of floods into Karanja dam. The agencies of Central water Commission will be coordinated to assist in the flood forecasting Accordingly, sequence of opening or closing of gates will be taken up in accordance with the approved gate operation schedule. Flood communication system: The widely time tested Communication to reach every corner of the flood affected zones have been radio and television and private media for the people to move to safer places by themselves in an emergency. Communication is very important in such occasions These days due to revolution in the telecommunication system, there is available, network of mobile phones. Advantage of this facility will be taken. Mobile numbers of all such staff will be listed and made available to all the personnel who have been assigned duty of disaster management. Following liaising officers for flood co-ordination of Karanja Dam are as listed below Karnataka State: 1) Chief Engineer, Phone No: 08472256561 Mobile No. 9448135628
2) Superintending Engineer, Phone No.0847220342 Mobile No.6448135628
3) Executive Engineer, Dam vision, Karanja, 08482226490 Mobile No. 9900537475
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4) Asst. Executive Engineer, Mobile No. 9900537475 5) Asst.Engineer Mobile No. 9448605331
2.2.6:- Methodology of Flood Regulation at Karanja The methodology is explained inspection 2.2 above 2.2.6.1:- Inflow Computation Inflow into reservoirs is normally estimated by the reservoir gauging method (also called the rise and fall method or inflow-outflow method). All the outflows are added together and to it the rate of rise in storage (Positive if the level rises, and negative if it falls) is added. Expressed as an equation, this will be. Inflow (cusecs) = Total outflow (cusecs) + Rate of increase in storage(cusecs) The rate of increase (or decrease) in storage can be determined from the observed rate of increase (or decrease) in reservoir level and the elevation capacity tables. For easy computation. Table 11 has been developed showing the rate of change of storage in the Karanja reservoir for a rate of rise in reservoir level of 1-cm/hour. The same information is shown graphically in Figure 6 which can be used for interpolation. 2.2.6.2:- Examples of Inflow Computation Example1. Let the reservoir level be at 581.80-m· at 1:00PM and 581.85-m at 3.00 PM Inflow Level @3.00 PM 581.85-M and its Gross storage is =4.302 TMc . Initial Level @1.00 PM 581.80-M and its Gross storage is =4.245 TMc . Total inflow water Qty= 0.052 TMC for two hours For 0.052 = 0.0212 TMC/hour 2 Gate operation to maintain water level in the Dam Inflow= Out flow
According Discharge APPENDIX- II Discharge table corresponding maximum water level @ 3.00 PM 581.85 mtr Lifting gate and Hight of 0.50 Mter its discharge is 468.76 Cum for 6 gate operation Now 468.76 = 78.126 Cum X35.315=2759.04 Cusecs for each gate discharge 2 An open 2 gate at a time=2x2759.04=5518.08 cusecs
.’. 5518.08x60x60x1 =0.01988 TMC 0.0200 TMC 100,000,0000, Hence Inflow = out flow 0.0212=0.0200 2.2.6.2 Example of Computation for Required Gate Opening Let FRL be 584.15m, the reservoir level be at 581.10m at 10· A.M., 516.18m at 11.50 A.M. and total outflow at 11:50 AM be 5518.08. cusecs.Then, from Example 1 above, the inflow is 5518.08 cusecs.
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2.2.7 Computation procedure for Required Radial Crest Gate Opening
Karnataka Engineering Research Station (KERS) Mysore has provided a discharge chart containing the flood discharge for prescribed gate opening versus Reservoir Level after conducting model studies in detail. The chart is as below.
TABLE-16:- Karanja reservoir project the discharges over spillway v/s gate openings the gate (IN CUMECS)
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Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e in e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 575.15 575.20 575.25 575.35 575.40 575.45 575.50 575.55 575.60 575.65 575.70 575.75 575.80 575.85 575.90
1 0.05 16.96 17.39 17.81 18.62 19.01 19.39 19.77 20.14 20.50 20.86 21.21 21.55 21.89 22.23 22.56
2 0.10 33.48 34.35 35.20 36.83 37.63 38.40 39.16 39.91 40.64 41.36 42.07 42.76 43.45 44.12 44.78
3 0.15 49.55 50.87 52.16 54.65 55.85 57.02 58.18 59.31 60.41 61.50 62.57 63.62 64.66 65.68 66.68
4 0.20 65.17 66.96 68.70 72.05 73.67 75.25 76.80 78.33 79.82 81.28 82.72 84.14 85.53 86.89 88.24
5 0.25 80.32 82.59 84.79 89.03 91.08 93.08 95.04 96.96 98.84 100.69 102.51 104.29 106.04 107.77 109.46
6 0.30 95.00 97.76 100.43 105.59 108.07 110.50 112.88 115.21 117.49 119.73 121.92 124.08 126.20 128.29 130.34
7 0.35 109.19 112.45 115.62 121.71 124.64 127.51 130.31 133.06 135.75 138.38 140.97 143.51 146.00 148.46 150.87
8 0.40 122.89 126.67 130.34 137.39 140.78 144.10 147.34 150.51 153.61 156.65 159.64 162.56 165.44 168.27 171.05
9 0.45 136.07 140.39 144.58 152.62 156.49 160.26 163.94 167.55 171.07 174.53 177.92 181.24 184.51 187.72 190.87
10 0.50 148.73 153.61 158.34 167.39 171.74 175.98 180.12 184.17 188.13 192.01 195.81 199.54 203.21 206.80 210.34
11 0.55 160.85 166.31 171.59 181.69 186.54 191.26 195.87 200.37 204.78 209.09 213.31 217.46 221.52 225.51 229.44
12 0.60 172.43 178.48 184.33 195.51 200.87 206.09 211.18 216.15 221.00 225.76 230.41 234.98 239.45 243.85 248.16
13 0.65 183.43 190.10 196.55 208.84 214.73 220.45 226.04 231.48 236.81 242.01 247.11 252.10 256.99 261.80 266.52
14 0.70 193.85 201.16 208.22 221.67 228.10 234.35 240.44 246.37 252.17 257.84 263.38 268.82 274.14 279.36 284.49
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Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e in e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 15 0.75 203.66 211.65 219.35 233.99 240.97 247.76 254.37 260.81 267.10 273.24 279.24 285.12 290.88 296.53 302.07
16 0.80 212.85 221.54 229.90 245.77 253.34 260.68 267.83 274.78 281.57 288.20 294.67 301.01 307.22 313.30 319.27
17 0.85 221.39 230.81 239.87 257.02 265.18 273.10 280.80 288.29 295.58 302.71 309.67 316.47 323.14 329.67 336.07
18 0.90 229.26 239.45 249.23 267.72 276.50 285.01 293.27 301.30 309.13 316.77 324.22 331.51 338.64 345.62 352.46
19 0.95 236.43 247.43 257.97 277.84 287.26 296.38 305.23 313.83 322.20 330.36 338.32 346.10 353.71 361.15 368.45
20 1.00 242.88 254.73 266.06 287.38 297.46 307.22 316.67 325.85 334.78 343.48 351.96 360.24 368.34 376.26 384.02
21 1.05 248.56 261.32 273.48 296.31 307.09 317.50 327.58 337.36 346.87 356.12 365.13 373.93 382.53 390.94 399.17
22 1.10 253.45 267.16 280.20 304.61 316.11 327.21 337.94 348.34 358.44 368.26 377.83 387.16 396.27 405.18 413.89
23 1.15 257.51 272.24 286.21 312.28 324.53 336.33 347.74 358.78 369.49 379.90 390.03 399.91 409.55 418.96 428.17
24 1.20 260.68 276.50 291.45 319.27 332.31 344.85 356.95 368.66 380.01 391.02 401.74 412.18 422.35 432.29 442.01
25 1.25 262.92 279.90 295.91 325.57 339.43 352.75 365.58 377.97 389.98 401.62 412.94 423.95 434.68 445.16 455.39
26 1.30 264.17 282.41 299.54 331.15 345.88 360.00 373.59 386.70 399.38 411.67 423.61 435.22 446.52 457.55 468.32
27 1.35 264.35 283.96 302.29 335.98 351.62 366.59 380.97 394.82 408.21 421.17 433.75 445.97 457.87 469.46 480.77
28 1.40 263.38 284.49 304.13 340.03 356.62 372.48 387.69 402.33 416.45 430.10 443.34 456.20 468.70 480.87 492.75
29 1.45 261.18 283.93 304.99 343.25 360.87 377.66 393.74 409.19 424.07 438.45 452.37 465.88 479.01 491.78 504.23
30 1.50 257.61 282.20 304.81 345.62 364.32 382.10 399.09 415.38 431.06 446.19 460.83 475.01 488.78 502.17 515.22
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Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec inCumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 575.95 576.00 576.05 576.10 576.15 576.20 576.25 576.30 576.35 576.40 576.45 576.50 576.55 576.60 576.65
1 0.05 22.88 23.20 23.52 23.83 24.14 24.44 24.74 25.04 25.33 25.62 25.90 26.19 26.47 26.74 27.02
2 0.10 45.44 46.08 46.72 47.35 47.96 48.58 49.18 49.77 50.36 50.95 51.52 52.09 52.65 53.21 53.76
3 0.15 67.67 68.64 69.60 70.55 71.48 72.41 73.32 74.22 75.11 75.98 76.85 77.71 78.56 79.40 80.23
4 0.20 89.57 90.88 92.17 93.44 94.69 95.93 97.15 98.36 99.55 100.73 101.89 103.04 104.18 105.31 106.42
5 0.25 111.13 112.78 114.40 116.00 117.58 119.14 120.68 122.20 123.69 125.18 126.64 128.09 129.52 130.93 132.33
6 0.30 132.36 134.35 136.31 138.25 140.15 142.04 143.89 145.73 147.54 149.32 151.09 152.84 154.57 156.27 157.96
7 0.35 153.25 155.59 157.89 160.17 162.41 164.62 166.80 168.95 171.07 173.17 175.25 177.30 179.32 181.33 183.31
8 0.40 173.79 176.48 179.14 181.75 184.33 186.87 189.38 191.86 194.30 196.72 199.10 201.46 203.79 206.09 208.37
9 0.45 193.98 197.03 200.04 203.01 205.93 208.81 211.65 214.45 217.22 219.95 222.65 225.32 227.95 230.56 233.13
10 0.50 213.81 217.24 220.60 223.92 227.19 230.41 233.59 236.73 239.82 242.88 245.89 248.87 251.82 254.73 257.61
11 0.55 233.29 237.09 240.82 244.50 248.12 251.69 255.21 258.68 262.11 265.49 268.83 272.13 275.39 278.61 281.79
12 0.60 252.41 256.58 260.68 264.72 268.71 272.63 276.50 280.31 284.07 287.79 291.45 295.07 298.65 302.18 305.68
13 0.65 271.15 275.71 280.19 284.60 288.95 293.23 297.45 301.61 305.71 309.76 313.76 317.71 321.61 325.46 329.26
14 0.70 289.52 294.47 299.34 304.13 308.85 313.49 318.07 322.58 327.03 331.42 335.75 340.03 344.25 348.42 352.55
15 0.75 307.52 312.87 318.12 323.30 328.39 333.40 338.34 343.21 348.01 352.75 357.42 362.03 366.59 371.08 375.53
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Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec inCumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 16 0.80 325.13 330.88 336.54 342.10 347.58 352.97 358.27 363.51 368.66 373.75 378.76 383.71 388.60 393.43 398.20
17 0.85 342.35 348.52 354.58 360.54 366.40 372.17 377.86 383.46 388.97 394.41 399.78 405.08 410.30 415.46 420.56
18 0.90 359.18 365.77 372.24 378.61 384.87 391.02 397.09 403.06 408.94 414.74 420.46 426.11 431.68 437.18 442.61
19 0.95 375.61 382.63 389.52 396.30 402.96 409.51 415.96 422.31 428.57 434.73 440.82 446.81 452.73 458.57 464.34
20 1.00 391.63 399.09 406.41 413.60 420.68 427.63 434.47 441.21 447.84 454.38 460.83 467.18 473.45 479.64 485.75
21 1.05 407.24 415.14 422.90 430.52 438.01 445.37 452.62 459.75 466.76 473.68 480.50 487.22 493.85 500.39 506.84
22 1.10 422.42 430.79 439.00 447.05 454.97 462.74 470.39 477.92 485.33 492.63 499.82 506.91 513.90 520.80 527.61
23 1.15 437.19 446.02 454.68 463.18 471.53 479.73 487.79 495.72 503.53 511.22 518.79 526.26 533.62 540.88 548.04
24 1.20 451.52 460.83 469.95 478.91 487.69 496.33 504.81 513.15 521.37 529.45 537.41 545.26 552.99 560.62 568.15
25 1.25 465.40 475.20 484.80 494.22 503.46 512.53 521.44 530.21 538.83 547.32 555.67 563.91 572.02 580.02 587.91
26 1.30 478.84 489.14 499.23 509.12 518.81 528.33 537.69 546.88 555.92 564.81 573.57 582.20 590.70 599.07 607.34
27 1.35 491.83 502.64 513.22 523.59 533.76 543.73 553.53 563.16 572.62 581.94 591.10 600.13 609.02 617.78 626.42
28 1.40 504.34 515.68 526.77 537.63 548.28 558.72 568.98 579.05 588.95 598.68 608.26 617.69 626.98 636.13 645.16
29 1.45 516.39 528.26 539.87 551.24 562.37 573.29 584.01 594.53 604.87 615.04 625.04 634.89 644.58 654.13 663.54
30 1.50 527.94 540.37 552.51 564.40 576.03 587.44 598.63 609.62 620.41 631.01 641.44 651.71 661.81 671.76 681.57
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O&M Manual for Karanja Dam January 2020
Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec inCumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 576.70 576.75 576.80 576.85 576.90 576.95 577.00 577.05 577.10 577.15 577.20 577.25 577.30 577.35 577.40
1 0.05 27.29 27.56 27.83 28.09 28.35 28.61 28.87 29.12 29.37 29.62 29.87 30.12 30.36 30.60 30.84
2 0.10 54.31 54.85 55.38 55.91 56.44 56.96 57.48 57.99 58.49 58.99 59.49 59.99 60.48 60.96 61.44
3 0.15 81.06 81.87 82.68 83.48 84.27 85.05 85.83 86.60 87.36 88.12 88.87 89.61 90.35 91.08 91.80
4 0.20 107.53 108.62 109.70 110.77 111.83 112.88 113.92 114.95 115.97 116.99 117.99 118.98 119.97 120.95 121.92
5 0.25 133.72 135.09 136.45 137.79 139.13 140.44 141.75 143.05 144.33 145.60 146.86 148.11 149.35 150.58 151.80
6 0.30 159.64 161.29 162.93 164.55 166.15 167.74 169.32 170.88 172.43 173.96 175.48 176.98 178.48 179.96 181.43
7 0.35 185.27 187.21 189.13 191.03 192.91 194.78 196.62 198.45 200.26 202.06 203.84 205.60 207.35 209.09 210.81
8 0.40 210.62 212.85 215.05 217.24 219.40 221.54 223.66 225.76 227.84 229.90 231.94 233.97 235.98 237.97 239.94
9 0.45 235.68 238.20 240.70 243.17 245.61 248.03 250.43 252.80 255.15 257.48 259.79 262.08 264.35 266.60 268.83
10 0.50 260.46 263.27 266.06 268.82 271.54 274.25 276.92 279.57 282.20 284.80 287.38 289.93 292.46 294.97 297.46
11 0.55 284.94 288.06 291.14 294.18 297.20 300.19 303.15 306.08 308.98 311.85 314.70 317.52 320.32 323.09 325.84
12 0.60 309.13 312.55 315.93 319.27 322.58 325.85 329.10 332.31 335.49 338.64 341.76 344.85 347.92 350.96 353.97
13 0.65 333.03 336.75 340.43 344.07 347.67 351.24 354.77 358.26 361.73 365.15 368.55 371.92 375.25 378.56 381.84
14 0.70 356.62 360.65 364.64 368.58 372.48 376.34 380.16 383.95 387.69 391.40 395.08 398.72 402.33 405.90 409.45
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O&M Manual for Karanja Dam January 2020
15 0.75 379.92 384.26 388.56 392.80 397.00 401.16 405.28 409.35 413.38 417.38 421.33 425.25 429.14 432.98 436.80
16 0.80 402.91 407.57 412.18 416.73 421.24 425.69 430.10 434.47 438.79 443.08 447.32 451.52 455.68 459.80 463.89
17 0.85 425.60 430.58 435.50 440.36 445.18 449.94 454.65 459.31 463.93 468.50 473.03 477.51 481.95 486.35 490.72
18 0.90 447.97 453.28 458.52 463.70 468.82 473.89 478.91 483.87 488.78 493.64 498.46 503.23 507.96 512.64 517.28
19 0.95 470.04 475.67 481.23 486.73 492.17 497.55 502.87 508.14 513.35 518.51 523.62 528.68 533.69 538.65 543.57
20 1.00 491.79 497.75 503.64 509.46 515.22 520.91 526.54 532.12 537.63 543.09 548.49 553.84 559.14 564.40 569.60
21 1.05 513.22 519.52 525.74 531.89 537.97 543.98 549.92 555.81 561.63 567.39 573.09 578.73 584.33 589.87 595.35
22 1.10 534.33 540.97 547.52 554.00 560.41 566.74 573.00 579.20 585.33 591.39 597.40 603.34 609.23 615.06 620.83
23 1.15 555.11 562.10 568.99 575.81 582.54 589.20 595.79 602.30 608.74 615.11 621.42 627.67 633.85 639.98 646.04
24 1.20 575.57 582.90 590.15 597.30 604.37 611.36 618.26 625.10 631.85 638.54 645.16 651.71 658.19 664.61 670.97
25 1.25 595.70 603.39 610.98 618.47 625.88 633.20 640.44 647.59 654.67 661.67 668.60 675.46 682.25 688.97 695.63
26 1.30 615.49 623.54 631.48 639.33 647.07 654.73 662.30 669.79 677.19 684.51 691.75 698.92 706.02 713.04 720.00
27 1.35 634.94 643.35 651.66 659.85 667.95 675.95 683.86 691.67 699.40 707.04 714.61 722.09 729.50 736.83 744.09
28 1.40 654.06 662.84 671.50 680.06 688.50 696.85 705.10 713.25 721.31 729.28 737.16 744.96 752.68 760.33 767.89
29 1.45 672.82 681.98 691.01 699.93 708.73 717.43 726.02 734.51 742.91 751.21 759.42 767.54 775.58 783.53 791.41
30 1.50 257.61 700.77 710.18 719.47 728.63 737.68 746.62 755.46 764.19 772.83 781.37 789.82 798.18 806.45 814.63
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O&M Manual for Karanja Dam January 2020
Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec inCumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 577.45 575.50 577.55 577.60 577.65 577.70 577.75 577.80 577.85 577.90 577.95 578.00 578.05 578.10 578.15
1 0.05 31.08 19.77 31.55 31.78 32.01 32.24 32.47 32.70 32.92 33.15 33.37 33.59 33.81 34.02 34.24
2 0.10 61.92 39.16 62.87 63.33 63.80 64.26 64.72 65.17 65.62 66.07 66.51 66.96 67.40 67.83 68.27
3 0.15 92.52 58.18 93.95 94.65 95.35 96.04 96.73 97.42 98.09 98.77 99.44 100.10 100.76 101.42 102.07
4 0.20 122.89 76.80 124.79 125.73 126.67 127.60 128.52 129.43 130.34 131.24 132.14 133.03 133.91 134.79 135.66
5 0.25 153.01 95.04 155.40 156.58 157.75 158.92 160.07 161.22 162.36 163.49 164.62 165.73 166.84 167.94 169.04
6 0.30 182.88 112.88 185.77 187.19 188.60 190.00 191.40 192.78 194.15 195.51 196.87 198.21 199.54 200.87 202.19
7 0.35 212.52 130.31 215.89 217.56 219.21 220.85 222.48 224.10 225.71 227.30 228.89 230.46 232.02 233.58 235.12
8 0.40 241.90 147.34 245.77 247.69 249.58 251.47 253.34 255.19 257.04 258.87 260.68 262.49 264.28 266.06 267.83
9 0.45 271.04 163.94 275.41 277.57 279.72 281.84 283.96 286.05 288.13 290.20 292.25 294.28 296.31 298.32 300.31
10 0.50 299.93 180.12 304.81 307.22 309.61 311.98 314.34 316.67 318.99 321.30 323.58 325.85 328.11 330.35 332.57
11 0.55 328.57 195.87 333.96 336.62 339.26 341.88 344.48 347.06 349.62 352.16 354.69 357.19 359.68 362.15 364.61
12 0.60 356.95 211.18 362.86 365.77 368.66 371.53 374.38 377.20 380.01 382.79 385.56 388.30 391.02 393.73 396.42
13 0.65 385.09 226.04 391.51 394.68 397.82 400.94 404.04 407.11 410.16 413.19 416.19 419.17 422.14 425.08 428.00
14 0.70 412.96 240.44 419.90 423.33 426.73 430.10 433.45 436.77 440.07 443.34 446.59 449.81 453.02 456.20 459.35
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O&M Manual for Karanja Dam January 2020
15 0.75 440.58 254.37 448.05 451.74 455.39 459.02 462.62 466.20 469.74 473.26 476.75 480.22 483.66 487.08 490.47
16 0.80 467.94 267.83 475.94 479.89 483.81 487.69 491.55 495.37 499.17 502.94 506.68 510.39 514.07 517.73 521.37
17 0.85 495.04 280.80 503.57 507.79 511.97 516.11 520.23 524.31 528.36 532.37 536.36 540.32 544.25 548.15 552.02
18 0.90 521.87 293.27 530.95 535.43 539.88 544.28 548.65 552.99 557.30 561.57 565.80 570.01 574.19 578.33 582.45
19 0.95 548.45 305.23 558.07 562.82 567.53 572.20 576.83 581.43 585.99 590.51 595.01 599.46 603.89 608.28 612.64
20 1.00 574.75 316.67 584.93 589.95 594.92 599.86 604.76 609.62 614.44 619.22 623.96 628.67 633.35 637.99 642.59
21 1.05 600.79 327.58 611.52 616.81 622.06 627.27 632.43 637.55 642.63 647.67 652.67 657.64 662.56 667.45 672.31
22 1.10 626.56 337.94 637.85 643.42 648.94 654.42 659.85 665.23 670.58 675.88 681.14 686.36 691.54 696.68 701.78
23 1.15 652.05 347.74 663.91 669.76 675.56 681.31 687.01 692.66 698.27 703.84 709.36 714.83 720.27 725.67 731.02
24 1.20 677.27 356.95 689.70 695.83 701.91 707.94 713.91 719.83 725.71 731.54 737.32 743.06 748.75 754.41 760.01
25 1.25 702.22 365.58 715.23 721.64 728.00 734.30 740.55 746.75 752.89 758.99 765.04 771.04 776.99 782.90 788.77
26 1.30 726.89 373.59 740.48 747.18 753.82 760.40 766.93 773.40 779.82 786.19 792.50 798.77 804.98 811.15 817.27
27 1.35 751.28 380.97 765.45 772.44 779.37 786.24 793.05 799.80 806.49 813.13 819.71 826.24 832.72 839.15 845.53
28 1.40 775.38 387.69 790.15 797.44 804.65 811.81 818.90 825.92 832.89 839.81 846.66 853.46 860.21 866.90 873.55
29 1.45 799.20 393.74 814.58 822.15 829.66 837.10 844.48 851.79 859.04 866.23 873.36 880.43 887.44 894.41 901.31
30 1.50 822.74 399.09 838.72 846.59 854.40 862.13 869.79 877.39 884.92 892.39 899.79 907.14 914.42 921.65 928.83
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O&M Manual for Karanja Dam January 2020
Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec inCumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 578.20 578.25 578.30 578.35 578.40 578.45 578.50 578.55 578.60 578.65 578.70 578.75 578.80 578.85 578.90
1 0.05 34.46 34.67 34.88 35.09 35.30 35.51 35.72 35.92 36.13 36.33 36.53 36.73 36.93 37.13 37.33
2 0.10 68.70 69.12 69.55 69.97 70.39 70.81 71.23 71.64 72.05 72.46 72.86 73.27 73.67 74.07 74.46
3 0.15 102.72 103.37 104.01 104.64 105.27 105.90 106.53 107.15 107.77 108.38 108.99 109.60 110.20 110.80 111.40
4 0.20 136.53 137.39 138.25 139.10 139.94 140.78 141.62 142.45 143.28 144.10 144.91 145.73 146.53 147.34 148.14
5 0.25 170.12 171.20 172.28 173.34 174.40 175.46 176.50 177.55 178.58 179.61 180.63 181.65 182.66 183.67 184.67
6 0.30 203.50 204.80 206.09 207.37 208.65 209.92 211.18 212.43 213.68 214.92 216.15 217.37 218.59 219.80 221.00
7 0.35 236.65 238.17 239.68 241.19 242.68 244.16 245.64 247.11 248.56 250.01 251.45 252.89 254.31 255.73 257.14
8 0.40 269.58 271.33 273.06 274.78 276.50 278.20 279.89 281.57 283.24 284.90 286.55 288.20 289.83 291.45 293.07
9 0.45 302.29 304.26 306.22 308.16 310.10 312.02 313.93 315.82 317.71 319.58 321.45 323.30 325.14 326.97 328.79
10 0.50 334.78 336.98 339.16 341.33 343.48 345.62 347.75 349.86 351.96 354.05 356.13 358.19 360.24 362.29 364.32
11 0.55 367.05 369.47 371.88 374.27 376.65 379.01 381.35 383.69 386.00 388.31 390.60 392.88 395.14 397.39 399.63
12 0.60 399.09 401.74 404.37 406.99 409.59 412.18 414.74 417.30 419.83 422.35 424.86 427.35 429.83 432.29 434.74
13 0.65 430.90 433.78 436.65 439.49 442.32 445.13 447.92 450.69 453.45 456.19 458.91 461.62 464.31 466.99 469.65
14 0.70 462.49 465.60 468.70 471.77 474.82 477.86 480.87 483.87 486.85 489.81 492.75 495.67 498.58 501.47 504.34
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O&M Manual for Karanja Dam January 2020
15 0.75 493.85 497.19 500.52 503.82 507.11 510.37 513.61 516.83 520.03 523.21 526.37 529.51 532.64 535.74 538.83
16 0.80 524.97 528.56 532.12 535.65 539.17 542.65 546.12 549.57 552.99 556.40 559.78 563.14 566.48 569.80 573.11
17 0.85 555.87 559.69 563.49 567.26 571.00 574.72 578.42 582.09 585.74 589.36 592.97 596.55 600.11 603.65 607.17
18 0.90 586.54 590.60 594.63 598.63 602.61 606.56 610.49 614.39 618.26 622.12 625.94 629.75 633.53 637.29 641.03
19 0.95 616.97 621.27 625.54 629.78 633.99 638.18 642.33 646.46 650.57 654.65 658.70 662.73 666.74 670.72 674.67
20 1.00 647.17 651.71 656.22 660.70 665.15 669.57 673.96 678.32 682.65 686.96 691.24 695.49 699.72 703.92 708.10
21 1.05 677.13 681.91 686.66 691.38 696.07 700.73 705.35 709.95 714.51 719.05 723.56 728.04 732.49 736.92 741.32
22 1.10 706.85 711.88 716.88 721.84 726.77 731.66 736.52 741.35 746.15 750.92 755.66 760.36 765.04 769.69 774.32
23 1.15 736.34 741.62 746.86 752.06 757.23 762.36 767.46 772.53 777.56 782.56 787.53 792.47 797.38 802.25 807.10
24 1.20 765.58 771.11 776.60 782.05 787.46 792.84 798.18 803.48 808.75 813.98 819.18 824.35 829.49 834.59 839.67
25 1.25 794.59 800.37 806.10 811.80 817.46 823.08 828.66 834.20 839.71 845.18 850.61 856.01 861.38 866.71 872.01
26 1.30 823.35 829.38 835.37 841.32 847.22 853.08 858.91 864.69 870.44 876.14 881.81 887.45 893.05 898.61 904.14
27 1.35 851.87 858.15 864.40 870.59 876.74 882.85 888.92 894.95 900.94 906.88 912.79 918.66 924.49 930.29 936.05
28 1.40 880.14 886.68 893.18 899.63 906.03 912.39 918.70 924.98 931.20 937.39 943.54 949.65 955.71 961.74 967.74
914.97 980.40 29 1.45 908.17 921.72 928.43 935.08 941.69 948.25 954.77 961.24 967.67 974.06 986.71 992.97 999.20
1004.3 1010.9 1017.4 1023.9 1030.4 30 1.50 935.94 943.01 950.02 956.98 963.89 970.75 977.56 984.33 991.05 997.72 5 3 8 8 4
79
O&M Manual for Karanja Dam January 2020
Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec inCumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 578.95 579.00 579.05 579.10 579.15 579.20 579.25 579.30 579.35 579.40 579.45 579.50 579.55 579.60 579.65
1 0.05 37.53 37.72 37.92 38.11 38.31 38.50 38.69 38.88 39.07 39.26 39.44 39.63 39.82 40.00 40.18
2 0.10 74.86 75.25 75.64 76.03 76.42 76.80 77.19 77.57 77.95 78.33 78.70 79.08 79.45 79.82 80.19
3 0.15 111.99 112.58 113.17 113.76 114.34 114.92 115.49 116.07 116.64 117.21 117.77 118.33 118.89 119.45 120.00
4 0.20 148.93 149.72 150.51 151.29 152.07 152.84 153.61 154.38 155.14 155.90 156.65 157.40 158.15 158.89 159.64
5 0.25 185.67 186.66 187.64 188.62 189.60 190.57 191.53 192.49 193.45 194.40 195.34 196.28 197.22 198.15 199.08
6 0.30 222.20 223.39 224.58 225.76 226.93 228.10 229.26 230.41 231.56 232.71 233.84 234.98 236.10 237.23 238.34
7 0.35 258.54 259.93 261.32 262.70 264.07 265.43 266.79 268.14 269.49 270.82 272.16 273.48 274.80 276.11 277.41
8 0.40 294.67 296.27 297.86 299.44 301.01 302.57 304.13 305.68 307.22 308.75 310.27 311.79 313.30 314.80 316.30
9 0.45 330.61 332.41 334.20 335.98 337.75 339.52 341.27 343.02 344.75 346.48 348.20 349.91 351.62 353.31 355.00
10 0.50 366.33 368.34 370.34 372.32 374.30 376.26 378.22 380.16 382.10 384.02 385.94 387.84 389.74 391.63 393.51
11 0.55 401.86 404.07 406.27 408.47 410.64 412.81 414.97 417.11 419.24 421.37 423.48 425.58 427.67 429.75 431.82
12 0.60 437.18 439.60 442.01 444.41 446.79 449.16 451.52 453.86 456.20 458.52 460.83 463.13 465.41 467.69 469.95
13 0.65 472.29 474.92 477.54 480.14 482.73 485.31 487.87 490.41 492.95 495.47 497.98 500.48 502.96 505.43 507.89
14 0.70 507.20 510.04 512.87 515.68 518.47 521.25 524.02 526.77 529.51 532.23 534.94 537.63 540.31 542.98 545.64
15 0.75 541.90 544.95 547.99 551.01 554.01 557.00 559.97 562.92 565.86 568.79 571.70 574.59 577.47 580.34 583.19
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O&M Manual for Karanja Dam January 2020
16 0.80 576.39 579.66 582.90 586.13 589.35 592.54 595.72 598.88 602.02 605.15 608.26 611.36 614.44 617.50 620.55
17 0.85 610.67 614.15 617.61 621.05 624.48 627.88 631.26 634.63 637.98 641.31 644.63 647.92 651.20 654.47 657.72
18 0.90 644.75 648.44 652.11 655.77 659.40 663.01 666.61 670.18 673.74 677.27 680.79 684.29 687.78 691.24 694.69
19 0.95 678.61 682.52 686.41 690.27 694.12 697.94 701.75 705.53 709.29 713.04 716.76 720.46 724.15 727.82 731.46
20 1.00 712.26 716.38 720.49 724.57 728.63 732.67 736.68 740.68 744.65 748.60 752.53 756.44 760.33 764.19 768.04
21 1.05 745.69 750.04 754.36 758.66 762.93 767.18 771.41 775.62 779.80 783.96 788.09 792.21 796.30 800.38 804.43
22 1.10 778.91 783.48 788.02 792.54 797.03 801.49 805.93 810.35 814.74 819.11 823.46 827.78 832.08 836.36 840.61
23 1.15 811.92 816.71 821.47 826.21 830.91 835.59 840.25 844.88 849.48 854.06 858.62 863.15 867.66 872.14 876.60
24 1.20 844.71 849.72 854.71 859.66 864.59 869.49 874.36 879.20 884.02 888.81 893.58 898.32 903.03 907.72 912.39
25 1.25 877.28 882.52 887.73 892.90 898.05 903.17 908.26 913.32 918.35 923.35 928.33 933.28 938.21 943.11 947.98
26 1.30 909.64 915.10 920.53 925.93 931.30 936.64 941.94 947.22 952.47 957.69 962.88 968.04 973.18 978.29 983.37
975.42 1002.6 1007.9 1013.2 1018.5 27 1.35 941.78 947.47 953.12 958.75 964.34 969.89 980.92 986.38 991.82 997.22 0 4 6 5
1008.6 1014.4 1025.7 1031.3 1036.9 1042.5 1048.0 1053.5 28 1.40 973.69 979.61 985.49 991.34 997.16 1002.94 9 0 1020.08 4 6 5 1 4 4
1041.7 1017.6 4 1047.6 1059.4 1065.2 1071.0 1076.8 1082.6 1088.3 29 1.45 1005.39 1011.54 5 1023.72 1029.76 1035.77 7 1053.58 5 8 9 6 1 2
1049.5 1074.5 1080.7 1092.9 1099.0 1105.0 1111.0 1116.9 1122.9 30 1.50 1036.86 1043.24 8 1055.89 1062.15 1068.38 8 3 1086.86 5 0 2 1 7 0
81
O&M Manual for Karanja Dam January 2020
Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec inCumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 578.20 578.25 578.30 578.35 578.40 578.45 578.50 578.55 578.60 578.65 578.70 578.75 578.80 578.85 578.90
1 0.05 34.46 34.67 34.88 35.09 35.30 35.51 35.72 35.92 36.13 36.33 36.53 36.73 36.93 37.13 37.33
2 0.10 68.70 69.12 69.55 69.97 70.39 70.81 71.23 71.64 72.05 72.46 72.86 73.27 73.67 74.07 74.46
3 0.15 102.72 103.37 104.01 104.64 105.27 105.90 106.53 107.15 107.77 108.38 108.99 109.60 110.20 110.80 111.40
4 0.20 136.53 137.39 138.25 139.10 139.94 140.78 141.62 142.45 143.28 144.10 144.91 145.73 146.53 147.34 148.14
5 0.25 170.12 171.20 172.28 173.34 174.40 175.46 176.50 177.55 178.58 179.61 180.63 181.65 182.66 183.67 184.67
6 0.30 203.50 204.80 206.09 207.37 208.65 209.92 211.18 212.43 213.68 214.92 216.15 217.37 218.59 219.80 221.00
7 0.35 236.65 238.17 239.68 241.19 242.68 244.16 245.64 247.11 248.56 250.01 251.45 252.89 254.31 255.73 257.14
8 0.40 269.58 271.33 273.06 274.78 276.50 278.20 279.89 281.57 283.24 284.90 286.55 288.20 289.83 291.45 293.07
9 0.45 302.29 304.26 306.22 308.16 310.10 312.02 313.93 315.82 317.71 319.58 321.45 323.30 325.14 326.97 328.79
10 0.50 334.78 336.98 339.16 341.33 343.48 345.62 347.75 349.86 351.96 354.05 356.13 358.19 360.24 362.29 364.32
11 0.55 367.05 369.47 371.88 374.27 376.65 379.01 381.35 383.69 386.00 388.31 390.60 392.88 395.14 397.39 399.63
12 0.60 399.09 401.74 404.37 406.99 409.59 412.18 414.74 417.30 419.83 422.35 424.86 427.35 429.83 432.29 434.74
13 0.65 430.90 433.78 436.65 439.49 442.32 445.13 447.92 450.69 453.45 456.19 458.91 461.62 464.31 466.99 469.65
14 0.70 462.49 465.60 468.70 471.77 474.82 477.86 480.87 483.87 486.85 489.81 492.75 495.67 498.58 501.47 504.34
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O&M Manual for Karanja Dam January 2020
15 0.75 493.85 497.19 500.52 503.82 507.11 510.37 513.61 516.83 520.03 523.21 526.37 529.51 532.64 535.74 538.83
16 0.80 524.97 528.56 532.12 535.65 539.17 542.65 546.12 549.57 552.99 556.40 559.78 563.14 566.48 569.80 573.11
17 0.85 555.87 559.69 563.49 567.26 571.00 574.72 578.42 582.09 585.74 589.36 592.97 596.55 600.11 603.65 607.17
18 0.90 586.54 590.60 594.63 598.63 602.61 606.56 610.49 614.39 618.26 622.12 625.94 629.75 633.53 637.29 641.03
19 0.95 616.97 621.27 625.54 629.78 633.99 638.18 642.33 646.46 650.57 654.65 658.70 662.73 666.74 670.72 674.67
20 1.00 647.17 651.71 656.22 660.70 665.15 669.57 673.96 678.32 682.65 686.96 691.24 695.49 699.72 703.92 708.10
21 1.05 677.13 681.91 686.66 691.38 696.07 700.73 705.35 709.95 714.51 719.05 723.56 728.04 732.49 736.92 741.32
22 1.10 706.85 711.88 716.88 721.84 726.77 731.66 736.52 741.35 746.15 750.92 755.66 760.36 765.04 769.69 774.32
23 1.15 736.34 741.62 746.86 752.06 757.23 762.36 767.46 772.53 777.56 782.56 787.53 792.47 797.38 802.25 807.10
24 1.20 765.58 771.11 776.60 782.05 787.46 792.84 798.18 803.48 808.75 813.98 819.18 824.35 829.49 834.59 839.67
25 1.25 794.59 800.37 806.10 811.80 817.46 823.08 828.66 834.20 839.71 845.18 850.61 856.01 861.38 866.71 872.01
26 1.30 823.35 829.38 835.37 841.32 847.22 853.08 858.91 864.69 870.44 876.14 881.81 887.45 893.05 898.61 904.14
27 1.35 851.87 858.15 864.40 870.59 876.74 882.85 888.92 894.95 900.94 906.88 912.79 918.66 924.49 930.29 936.05
28 1.40 880.14 886.68 893.18 899.63 906.03 912.39 918.70 924.98 931.20 937.39 943.54 949.65 955.71 961.74 967.74
914.97 980.40 29 1.45 908.17 921.72 928.43 935.08 941.69 948.25 954.77 961.24 967.67 974.06 986.71 992.97 999.20
943.01 1004.3 1010.9 1017.4 1023.9 1030.4 30 1.50 935.94 950.02 956.98 963.89 970.75 977.56 984.33 991.05 997.72 5 3 8 8 4
83
O&M Manual for Karanja Dam January 2020
Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec inCumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 578.95 579.00 579.05 579.10 579.15 579.20 579.25 579.30 579.35 579.40 579.45 579.50 579.55 579.60 579.65
1 0.05 37.53 37.72 37.92 38.11 38.31 38.50 38.69 38.88 39.07 39.26 39.44 39.63 39.82 40.00 40.18
2 0.10 74.86 75.25 75.64 76.03 76.42 76.80 77.19 77.57 77.95 78.33 78.70 79.08 79.45 79.82 80.19
3 0.15 111.99 112.58 113.17 113.76 114.34 114.92 115.49 116.07 116.64 117.21 117.77 118.33 118.89 119.45 120.00
4 0.20 148.93 149.72 150.51 151.29 152.07 152.84 153.61 154.38 155.14 155.90 156.65 157.40 158.15 158.89 159.64
5 0.25 185.67 186.66 187.64 188.62 189.60 190.57 191.53 192.49 193.45 194.40 195.34 196.28 197.22 198.15 199.08
6 0.30 222.20 223.39 224.58 225.76 226.93 228.10 229.26 230.41 231.56 232.71 233.84 234.98 236.10 237.23 238.34
7 0.35 258.54 259.93 261.32 262.70 264.07 265.43 266.79 268.14 269.49 270.82 272.16 273.48 274.80 276.11 277.41
8 0.40 294.67 296.27 297.86 299.44 301.01 302.57 304.13 305.68 307.22 308.75 310.27 311.79 313.30 314.80 316.30
9 0.45 330.61 332.41 334.20 335.98 337.75 339.52 341.27 343.02 344.75 346.48 348.20 349.91 351.62 353.31 355.00
10 0.50 366.33 368.34 370.34 372.32 374.30 376.26 378.22 380.16 382.10 384.02 385.94 387.84 389.74 391.63 393.51
11 0.55 401.86 404.07 406.27 408.47 410.64 412.81 414.97 417.11 419.24 421.37 423.48 425.58 427.67 429.75 431.82
12 0.60 437.18 439.60 442.01 444.41 446.79 449.16 451.52 453.86 456.20 458.52 460.83 463.13 465.41 467.69 469.95
13 0.65 472.29 474.92 477.54 480.14 482.73 485.31 487.87 490.41 492.95 495.47 497.98 500.48 502.96 505.43 507.89
14 0.70 507.20 510.04 512.87 515.68 518.47 521.25 524.02 526.77 529.51 532.23 534.94 537.63 540.31 542.98 545.64
15 0.75 541.90 544.95 547.99 551.01 554.01 557.00 559.97 562.92 565.86 568.79 571.70 574.59 577.47 580.34 583.19
84
O&M Manual for Karanja Dam January 2020
16 0.80 576.39 579.66 582.90 586.13 589.35 592.54 595.72 598.88 602.02 605.15 608.26 611.36 614.44 617.50 620.55
17 0.85 610.67 614.15 617.61 621.05 624.48 627.88 631.26 634.63 637.98 641.31 644.63 647.92 651.20 654.47 657.72
18 0.90 644.75 648.44 652.11 655.77 659.40 663.01 666.61 670.18 673.74 677.27 680.79 684.29 687.78 691.24 694.69
19 0.95 678.61 682.52 686.41 690.27 694.12 697.94 701.75 705.53 709.29 713.04 716.76 720.46 724.15 727.82 731.46
20 1.00 712.26 716.38 720.49 724.57 728.63 732.67 736.68 740.68 744.65 748.60 752.53 756.44 760.33 764.19 768.04
21 1.05 745.69 750.04 754.36 758.66 762.93 767.18 771.41 775.62 779.80 783.96 788.09 792.21 796.30 800.38 804.43
22 1.10 778.91 783.48 788.02 792.54 797.03 801.49 805.93 810.35 814.74 819.11 823.46 827.78 832.08 836.36 840.61
23 1.15 811.92 816.71 821.47 826.21 830.91 835.59 840.25 844.88 849.48 854.06 858.62 863.15 867.66 872.14 876.60
24 1.20 844.71 849.72 854.71 859.66 864.59 869.49 874.36 879.20 884.02 888.81 893.58 898.32 903.03 907.72 912.39
25 1.25 877.28 882.52 887.73 892.90 898.05 903.17 908.26 913.32 918.35 923.35 928.33 933.28 938.21 943.11 947.98
26 1.30 909.64 915.10 920.53 925.93 931.30 936.64 941.94 947.22 952.47 957.69 962.88 968.04 973.18 978.29 983.37
975.42 1002.6 1007.9 1013.2 1018.5 27 1.35 941.78 947.47 953.12 958.75 964.34 969.89 980.92 986.38 991.82 997.22 0 4 6 5
1008.6 1014.4 1025.7 1031.3 1036.9 1042.5 1048.0 1053.5 28 1.40 973.69 979.61 985.49 991.34 997.16 1002.94 9 0 1020.08 4 6 5 1 4 4
1041.7 1017.6 4 1047.6 1059.4 1065.2 1071.0 1076.8 1082.6 1088.3 29 1.45 1005.39 1011.54 5 1023.72 1029.76 1035.77 7 1053.58 5 8 9 6 1 2
1049.5 1074.5 1080.7 1092.9 1099.0 1105.0 1111.0 1116.9 1122.9 30 1.50 1036.86 1043.24 8 1055.89 1062.15 1068.38 8 3 1086.86 5 0 2 1 7 0
85
O&M Manual for Karanja Dam January 2020
Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec inCumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 579.70 579.75 579.80 579.85 579.90 579.95 580.00 580.05 580.10 580.15 580.20 580.25 580.30 580.35 580.40
1 0.05 40.37 40.55 40.73 40.91 41.09 41.27 41.45 41.63 41.80 41.98 42.16 42.33 42.50 42.68 42.85
2 0.10 80.55 80.92 81.28 81.64 82.00 82.36 82.72 83.08 83.43 83.78 84.14 84.48 84.83 85.18 85.53
3 0.15 120.55 121.10 121.65 122.20 122.74 123.28 123.81 124.35 124.88 125.41 125.94 126.47 126.99 127.51 128.03
4 0.20 160.37 161.11 161.84 162.56 163.29 164.01 164.73 165.44 166.15 166.86 167.57 168.27 168.97 169.67 170.36
5 0.25 200.01 200.92 201.84 202.75 203.66 204.56 205.46 206.36 207.25 208.14 209.02 209.90 210.78 211.65 212.52
6 0.30 239.45 240.56 241.66 242.76 243.85 244.93 246.01 247.09 248.16 249.23 250.29 251.35 252.41 253.45 254.50
7 0.35 278.71 280.01 281.29 282.58 283.85 285.12 286.39 287.65 288.90 290.15 291.39 292.63 293.86 295.09 296.31
8 0.40 317.79 319.27 320.74 322.21 323.67 325.13 326.58 328.02 329.45 330.88 332.31 333.72 335.14 336.54 337.94
9 0.45 356.68 358.35 360.01 361.66 363.31 364.95 366.59 368.21 369.83 371.44 373.05 374.64 376.23 377.82 379.40
10 0.50 395.38 397.24 399.09 400.93 402.77 404.59 406.41 408.22 410.02 411.82 413.60 415.38 417.16 418.92 420.68
11 0.55 433.89 435.94 437.98 440.01 442.03 444.05 446.05 448.05 450.04 452.01 453.98 455.94 457.90 459.84 461.78
12 0.60 472.21 474.45 476.68 478.91 481.12 483.32 485.51 487.69 489.87 492.03 494.18 496.33 498.46 500.59 502.70
13 0.65 510.34 512.77 515.20 517.61 520.01 522.40 524.78 527.15 529.51 531.86 534.20 536.53 538.84 541.15 543.45
14 0.70 548.28 550.91 553.53 556.13 558.72 561.30 563.87 566.43 568.98 571.51 574.03 576.55 579.05 581.54 584.02
15 0.75 586.03 588.85 591.66 594.46 597.24 600.02 602.77 605.52 608.25 610.98 613.69 616.38 619.07 621.74 624.41
16 0.80 623.58 626.60 629.61 632.60 635.58 638.54 641.49 644.43 647.35 650.26 653.15 656.04 658.91 661.77 664.61
86
O&M Manual for Karanja Dam January 2020
17 0.85 660.95 664.16 667.37 670.55 673.72 676.88 680.02 683.14 686.26 689.35 692.44 695.51 698.57 701.61 704.64
18 0.90 698.12 701.53 704.93 708.31 711.68 715.02 718.36 721.68 724.98 728.27 731.54 734.80 738.04 741.27 744.49
19 0.95 735.09 738.71 742.30 745.88 749.44 752.98 756.51 760.02 763.51 766.99 770.46 773.90 777.33 780.75 784.15
20 1.00 771.88 775.69 779.48 783.25 787.01 790.75 794.47 798.18 801.86 805.53 809.19 812.82 816.44 820.05 823.64
21 1.05 808.46 812.47 816.47 820.44 824.39 828.33 832.24 836.14 840.02 843.88 847.73 851.56 855.37 859.16 862.94
22 1.10 844.85 849.06 853.26 857.43 861.58 865.71 869.83 873.92 877.99 882.05 886.09 890.10 894.10 898.09 902.05
23 1.15 881.04 885.46 889.85 894.22 898.58 902.91 907.22 911.51 915.77 920.02 924.25 928.46 932.66 936.83 940.98
24 1.20 917.03 921.65 926.25 930.82 935.38 939.91 944.41 948.90 953.37 957.81 962.23 966.64 971.02 975.39 979.73
25 1.25 952.83 957.65 962.45 967.23 971.98 976.71 981.42 986.10 990.77 995.41 1000.03 1004.62 1009.20 1013.76 1018.29
26 1.30 988.42 993.45 998.46 1003.44 1008.39 1013.32 1018.23 1023.12 1027.98 1032.81 1037.63 1042.42 1047.19 1051.94 1056.67
27 1.35 1023.82 1029.05 1034.26 1039.45 1044.61 1049.74 1054.85 1059.93 1064.99 1070.03 1075.04 1080.03 1084.99 1089.94 1094.86
28 1.40 1059.01 1064.46 1069.87 1075.26 1080.63 1085.96 1091.27 1096.56 1101.82 1107.05 1112.26 1117.45 1122.61 1127.74 1132.86
29 1.45 1094.00 1099.66 1105.28 1110.88 1116.45 1121.99 1127.50 1132.99 1138.45 1143.88 1149.29 1154.67 1160.03 1165.36 1170.67
30 1.50 1128.79 1134.65 1140.49 1146.29 1152.07 1157.81 1163.53 1169.22 1174.88 1180.52 1186.13 1191.71 1197.26 1202.79 1208.30
87
O&M Manual for Karanja Dam January 2020
Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec inCumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 580.45 580.50 580.55 580.60 580.65 580.70 580.75 580.80 580.85 580.90 580.95 581.00 581.05 581.10 581.15
1 0.05 43.02 43.19 43.36 43.53 43.70 43.87 44.04 44.20 44.37 44.54 44.70 44.87 45.03 45.19 45.36
2 0.10 85.87 86.21 86.55 86.89 87.23 87.57 87.91 88.24 88.58 88.91 89.24 89.57 89.90 90.22 90.55
3 0.15 128.55 129.06 129.58 130.09 130.60 131.10 131.61 132.11 132.61 133.11 133.61 134.11 134.60 135.09 135.58
4 0.20 171.05 171.74 172.43 173.11 173.79 174.47 175.14 175.81 176.48 177.15 177.82 178.48 179.14 179.79 180.45
5 0.25 213.38 214.25 215.10 215.96 216.81 217.66 218.50 219.35 220.19 221.02 221.85 222.68 223.51 224.33 225.15
6 0.30 255.54 256.58 257.61 258.64 259.66 260.68 261.70 262.71 263.72 264.72 265.73 266.72 267.72 268.71 269.69
7 0.35 297.52 298.74 299.94 301.15 302.34 303.54 304.72 305.91 307.09 308.26 309.43 310.60 311.76 312.91 314.07
8 0.40 339.33 340.72 342.10 343.48 344.85 346.22 347.58 348.93 350.28 351.63 352.97 354.30 355.63 356.95 358.27
9 0.45 380.97 382.53 384.09 385.64 387.19 388.73 390.26 391.79 393.31 394.82 396.33 397.84 399.34 400.83 402.32
10 0.50 422.42 424.17 425.90 427.63 429.35 431.06 432.77 434.47 436.17 437.85 439.53 441.21 442.88 444.54 446.19
11 0.55 463.71 465.63 467.54 469.44 471.34 473.23 475.11 476.98 478.85 480.71 482.56 484.41 486.25 488.08 489.90
12 0.60 504.81 506.91 509.00 511.08 513.15 515.22 517.28 519.33 521.37 523.40 525.42 527.44 529.45 531.45 533.45
13 0.65 545.74 548.02 550.29 552.55 554.80 557.04 559.27 561.49 563.71 565.92 568.11 570.30 572.48 574.66 576.82
14 0.70 586.49 588.95 591.39 593.83 596.26 598.68 601.09 603.49 605.88 608.26 610.63 612.99 615.35 617.69 620.03
15 0.75 627.06 629.70 632.33 634.94 637.55 640.15 642.74 645.31 647.88 650.43 652.98 655.51 658.04 660.56 663.06
16 0.80 667.45 670.27 673.08 675.88 678.67 681.44 684.21 686.96 689.70 692.43 695.15 697.86 700.56 703.25 705.93
88
O&M Manual for Karanja Dam January 2020
17 0.85 707.66 710.66 713.66 716.64 719.60 722.56 725.50 728.43 731.35 734.26 737.16 740.04 742.92 745.78 748.63
18 0.90 747.69 750.88 754.05 757.22 760.36 763.50 766.62 769.73 772.83 775.92 778.99 782.05 785.10 788.14 791.16
19 0.95 787.54 790.91 794.27 797.62 800.95 804.26 807.57 810.86 814.13 817.39 820.64 823.88 827.11 830.32 833.52
20 1.00 827.21 830.77 834.31 837.84 841.35 844.85 848.33 851.80 855.26 858.70 862.13 865.54 868.94 872.33 875.71
21 1.05 866.70 870.44 874.17 877.88 881.58 885.26 888.92 892.57 896.21 899.83 903.44 907.03 910.61 914.17 917.72
22 1.10 906.00 909.93 913.84 917.74 921.62 925.49 929.33 933.17 936.98 940.78 944.57 948.34 952.10 955.84 959.56
23 1.15 945.12 949.24 953.34 957.42 961.49 965.54 969.57 973.58 977.58 981.56 985.53 989.48 993.41 997.33 1001.23
24 1.20 984.06 988.36 992.65 996.92 1001.17 1005.41 1009.62 1013.82 1018.00 1022.16 1026.31 1030.44 1034.55 1038.65 1042.73
25 1.25 1022.81 1027.30 1031.78 1036.24 1040.68 1045.09 1049.50 1053.88 1058.24 1062.59 1066.92 1071.23 1075.52 1079.80 1084.06
26 1.30 1061.38 1066.06 1070.73 1075.37 1080.00 1084.60 1089.19 1093.76 1098.30 1102.83 1107.34 1111.84 1116.31 1120.77 1125.21
27 1.35 1099.76 1104.63 1109.49 1114.32 1119.14 1123.93 1128.70 1133.45 1138.19 1142.90 1147.59 1152.27 1156.92 1161.56 1166.18
28 1.40 1137.95 1143.02 1148.07 1153.09 1158.09 1163.07 1168.03 1172.97 1177.89 1182.79 1187.67 1192.52 1197.36 1202.18 1206.98
29 1.45 1175.96 1181.22 1186.46 1191.67 1196.87 1202.04 1207.18 1212.31 1217.41 1222.50 1227.56 1232.60 1237.62 1242.62 1247.60
30 1.50 1213.78 1219.23 1224.66 1230.07 1235.45 1240.81 1246.15 1251.47 1256.76 1262.03 1267.27 1272.50 1277.70 1282.89 1288.05
89
O&M Manual for Karanja Dam January 2020
Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec inCumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 581.20 581.25 581.30 581.35 581.40 581.45 581.50 581.55 581.60 581.65 581.70 581.75 581.80 581.85 581.90
1 0.05 42.16 45.68 45.84 46.00 46.16 46.32 46.48 46.64 46.80 46.95 47.11 47.27 47.42 47.58 47.73
2 0.10 84.14 91.20 91.52 91.84 92.17 92.48 92.80 93.12 93.44 93.75 94.07 94.38 94.69 95.00 95.31
3 0.15 125.94 136.56 137.04 137.53 138.01 138.49 138.97 139.44 139.92 140.39 140.86 141.33 141.80 142.27 142.74
4 0.20 167.57 181.75 182.40 183.05 183.69 184.33 184.97 185.61 186.24 186.87 187.50 188.13 188.76 189.38 190.00
5 0.25 209.02 226.78 227.60 228.40 229.21 230.01 230.81 231.61 232.40 233.20 233.99 234.77 235.56 236.34 237.12
6 0.30 250.29 271.65 272.63 273.60 274.57 275.53 276.50 277.45 278.41 279.36 280.31 281.26 282.20 283.14 284.07
7 0.35 291.39 316.36 317.50 318.63 319.77 320.89 322.02 323.14 324.25 325.37 326.48 327.58 328.68 329.78 330.87
8 0.40 332.31 360.90 362.20 363.51 364.80 366.09 367.38 368.66 369.94 371.21 372.48 373.75 375.01 376.26 377.52
9 0.45 373.05 405.28 406.75 408.21 409.67 411.13 412.58 414.02 415.46 416.90 418.33 419.75 421.17 422.59 424.00
10 0.50 413.60 449.49 451.12 452.76 454.38 456.00 457.62 459.22 460.83 462.42 464.02 465.60 467.18 468.76 470.33
11 0.55 453.98 493.53 495.34 497.13 498.93 500.71 502.49 504.26 506.03 507.79 509.54 511.29 513.03 514.77 516.50
12 0.60 494.18 537.41 539.38 541.35 543.31 545.26 547.20 549.14 551.07 552.99 554.91 556.82 558.72 560.62 562.51
13 0.65 534.20 581.12 583.27 585.40 587.52 589.64 591.75 593.85 595.95 598.03 600.11 602.19 604.25 606.31 608.36
14 0.70 574.03 624.67 626.98 629.28 631.57 633.86 636.13 638.40 640.66 642.91 645.16 647.39 649.62 651.84 654.06
15 0.75 613.69 668.05 670.53 673.00 675.46 677.91 680.35 682.79 685.21 687.63 690.04 692.44 694.83 697.21 699.59
16 0.80 653.15 711.26 713.91 716.55 719.18 721.80 724.41 727.01 729.60 732.18 734.76 737.32 739.88 742.43 744.96
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17 0.85 692.44 754.30 757.12 759.93 762.73 765.52 768.30 771.07 773.83 776.58 779.31 782.04 784.76 787.48 790.18
18 0.90 731.54 797.18 800.17 803.15 806.12 809.08 812.02 814.96 817.89 820.80 823.71 826.60 829.49 832.36 835.23
19 0.95 770.46 839.88 843.04 846.20 849.34 852.46 855.58 858.69 861.78 864.86 867.94 871.00 874.05 877.09 880.12
20 1.00 809.19 882.42 885.75 889.08 892.39 895.69 898.97 902.25 905.51 908.76 912.00 915.23 918.45 921.65 924.85
21 1.05 847.73 924.78 928.29 931.79 935.27 938.74 942.20 945.64 949.08 952.50 955.90 959.30 962.68 966.05 969.41
22 1.10 886.09 966.97 970.66 974.33 977.98 981.63 985.25 988.87 992.47 996.06 999.64 1003.20 1006.75 1010.29 1013.82
23 1.15 924.25 1009.00 1012.85 1016.70 1020.53 1024.34 1028.14 1031.93 1035.70 1039.46 1043.21 1046.94 1050.66 1054.37 1058.06
24 1.20 962.23 1050.85 1054.88 1058.90 1062.90 1066.89 1070.86 1074.82 1078.77 1082.70 1086.61 1090.52 1094.40 1098.28 1102.14
25 1.25 1000.03 1092.52 1096.74 1100.93 1105.11 1109.27 1113.42 1117.55 1121.66 1125.77 1129.85 1133.92 1137.98 1142.02 1146.05
26 1.30 1037.63 1134.03 1138.42 1142.79 1147.14 1151.48 1155.80 1160.10 1164.39 1168.67 1172.92 1177.16 1181.39 1185.60 1189.80
27 1.35 1075.04 1175.36 1179.93 1184.47 1189.00 1193.52 1198.01 1202.49 1206.95 1211.40 1215.83 1220.24 1224.64 1229.02 1233.38
28 1.40 1112.26 1216.52 1221.26 1225.99 1230.69 1235.38 1240.05 1244.71 1249.34 1253.96 1258.56 1263.15 1267.72 1272.27 1276.80
29 1.45 1149.29 1257.50 1262.43 1267.33 1272.21 1277.08 1281.92 1286.75 1291.56 1296.36 1301.13 1305.89 1310.63 1315.35 1320.06
30 1.50 1186.13 1298.31 1303.41 1308.50 1313.56 1318.60 1323.62 1328.63 1333.61 1338.58 1343.53 1348.46 1353.37 1358.27 1363.14
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Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec inCumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 581.95 582.00 582.05 582.10 582.15 582.20 582.25 582.30 582.35 582.40 582.45 582.50 582.55 582.60 582.65
1 0.05 47.89 48.04 48.19 48.35 48.50 48.65 48.80 48.95 49.10 49.25 49.40 49.55 49.70 49.85 50.00
2 0.10 95.62 95.93 96.24 96.54 96.85 84.14 84.48 84.83 85.18 85.53 85.87 86.21 86.55 86.89 87.23
3 0.15 143.20 143.66 144.12 144.58 145.04 125.94 126.47 126.99 127.51 128.03 128.55 129.06 129.58 130.09 130.60
4 0.20 190.62 191.24 191.86 192.47 193.08 167.57 168.27 168.97 169.67 170.36 171.05 171.74 172.43 173.11 173.79
5 0.25 237.89 238.67 239.44 240.21 240.97 209.02 209.90 210.78 211.65 212.52 213.38 214.25 215.10 215.96 216.81
6 0.30 285.01 285.94 286.86 287.79 288.71 250.29 251.35 252.41 253.45 254.50 255.54 256.58 257.61 258.64 259.66
7 0.35 331.96 333.05 334.13 335.21 336.29 291.39 292.63 293.86 295.09 296.31 297.52 298.74 299.94 301.15 302.34
8 0.40 378.76 380.01 381.25 382.48 383.71 332.31 333.72 335.14 336.54 337.94 339.33 340.72 342.10 343.48 344.85
9 0.45 425.41 426.81 428.21 429.60 430.99 373.05 374.64 376.23 377.82 379.40 380.97 382.53 384.09 385.64 387.19
10 0.50 471.89 473.45 475.01 476.56 478.10 413.60 415.38 417.16 418.92 420.68 422.42 424.17 425.90 427.63 429.35
11 0.55 518.22 519.94 521.66 523.36 525.07 453.98 455.94 457.90 459.84 461.78 463.71 465.63 467.54 469.44 471.34
12 0.60 564.40 566.27 568.15 570.01 571.87 494.18 496.33 498.46 500.59 502.70 504.81 506.91 509.00 511.08 513.15
13 0.65 610.41 612.45 614.48 616.50 618.52 534.20 536.53 538.84 541.15 543.45 545.74 548.02 550.29 552.55 554.80
14 0.70 656.26 658.46 660.65 662.84 665.01 574.03 576.55 579.05 581.54 584.02 586.49 588.95 591.39 593.83 596.26
15 0.75 701.96 704.32 706.67 709.01 711.35 613.69 616.38 619.07 621.74 624.41 627.06 629.70 632.33 634.94 637.55
16 0.80 747.49 750.01 752.53 755.03 757.53 653.15 656.04 658.91 661.77 664.61 667.45 670.27 673.08 675.88 678.67
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17 0.85 792.87 795.55 798.23 800.89 803.55 692.44 695.51 698.57 701.61 704.64 707.66 710.66 713.66 716.64 719.60
18 0.90 838.08 840.93 843.77 846.59 849.41 731.54 734.80 738.04 741.27 744.49 747.69 750.88 754.05 757.22 760.36
19 0.95 883.14 886.15 889.15 892.14 895.11 770.46 773.90 777.33 780.75 784.15 787.54 790.91 794.27 797.62 800.95
20 1.00 928.03 931.20 934.37 937.52 940.66 809.19 812.82 816.44 820.05 823.64 827.21 830.77 834.31 837.84 841.35
21 1.05 972.76 976.10 979.43 982.74 986.04 847.73 851.56 855.37 859.16 862.94 866.70 870.44 874.17 877.88 881.58
22 1.10 1017.33 1020.84 1024.33 1027.80 1031.27 886.09 890.10 894.10 898.09 902.05 906.00 909.93 913.84 917.74 921.62
23 1.15 1061.74 1065.41 1069.06 1072.71 1076.34 924.25 928.46 932.66 936.83 940.98 945.12 949.24 953.34 957.42 961.49
24 1.20 1105.98 1109.82 1113.64 1117.45 1121.24 962.23 966.64 971.02 975.39 979.73 984.06 988.36 992.65 996.92 1001.17
25 1.25 1150.07 1154.07 1158.05 1162.02 1165.98 1000.03 1004.62 1009.20 1013.76 1018.29 1022.81 1027.30 1031.78 1036.24 1040.68
26 1.30 1193.98 1198.15 1202.30 1206.44 1210.57 1037.63 1042.42 1047.19 1051.94 1056.67 1061.38 1066.06 1070.73 1075.37 1080.00
27 1.35 1237.73 1242.07 1246.39 1250.70 1254.99 1075.04 1080.03 1084.99 1089.94 1094.86 1099.76 1104.63 1109.49 1114.32 1119.14
28 1.40 1281.32 1285.83 1290.31 1294.79 1299.24 1112.26 1117.45 1122.61 1127.74 1132.86 1137.95 1143.02 1148.07 1153.09 1158.09
29 1.45 1324.75 1329.42 1334.08 1338.72 1343.34 1149.29 1154.67 1160.03 1165.36 1170.67 1175.96 1181.22 1186.46 1191.67 1196.87
30 1.50 1368.00 1372.85 1377.67 1382.48 1387.27 1186.13 1191.71 1197.26 1202.79 1208.30 1213.78 1219.23 1224.66 1230.07 1235.45
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Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec inCumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 582.70 582.75 582.80 582.85 582.90 582.95 583.00 583.05 583.10 583.15 583.20 583.30 583.35 583.40 583.45
1 0.05 50.14 50.29 50.44 50.58 50.73 50.87 51.02 51.16 51.31 51.45 51.59 51.88 52.02 52.16 52.30
2 0.10 100.14 100.43 100.73 101.02 101.31 101.60 101.89 102.18 102.47 102.76 103.04 103.61 103.90 104.18 104.47
3 0.15 149.99 150.43 150.87 151.31 151.75 152.19 152.62 153.06 153.49 153.92 154.35 155.21 155.64 156.06 156.49
4 0.20 199.69 200.28 200.87 201.46 202.04 202.62 203.21 203.79 204.36 204.94 205.51 206.66 207.23 207.80 208.37
5 0.25 249.24 249.98 250.72 251.45 252.19 252.92 253.64 254.37 255.09 255.81 256.53 257.97 258.68 259.39 260.10
6 0.30 298.65 299.54 300.42 301.30 302.18 303.06 303.94 304.81 305.68 306.55 307.41 309.13 309.99 310.84 311.70
7 0.35 347.91 348.94 349.98 351.01 352.04 353.06 354.08 355.10 356.12 357.13 358.14 360.15 361.15 362.15 363.15
8 0.40 397.01 398.20 399.38 400.56 401.74 402.91 404.08 405.25 406.41 407.57 408.73 411.03 412.18 413.32 414.46
9 0.45 445.97 447.31 448.64 449.97 451.30 452.62 453.93 455.25 456.56 457.87 459.17 461.76 463.05 464.34 465.63
10 0.50 494.78 496.27 497.75 499.23 500.70 502.17 503.64 505.10 506.56 508.01 509.46 512.35 513.79 515.22 516.65
11 0.55 543.44 545.08 546.71 548.34 549.96 551.58 553.20 554.81 556.42 558.02 559.61 562.79 564.38 565.95 567.53
12 0.60 591.94 593.73 595.52 597.30 599.07 600.84 602.61 604.37 606.12 607.87 609.62 613.09 614.82 616.54 618.26
13 0.65 640.30 642.24 644.18 646.11 648.04 649.96 651.87 653.78 655.68 657.58 659.47 663.24 665.12 666.99 668.86
14 0.70 688.50 690.60 692.69 694.77 696.85 698.92 700.99 703.04 705.10 707.14 709.18 713.25 715.27 717.29 719.30
15 0.75 736.56 738.81 741.05 743.28 745.51 747.73 749.95 752.16 754.36 756.56 758.75 763.11 765.28 767.44 769.60
16 0.80 784.46 786.86 789.26 791.65 794.03 796.40 798.77 801.13 803.48 805.82 808.16 812.82 815.14 817.45 819.76
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17 0.85 832.21 834.77 837.31 839.86 842.39 844.91 847.43 849.94 852.45 854.94 857.43 862.39 864.86 867.32 869.77
18 0.90 879.81 882.52 885.22 887.91 890.60 893.28 895.95 898.61 901.27 903.91 906.55 911.81 914.42 917.03 919.64
19 0.95 927.25 930.12 932.97 935.82 938.66 941.49 944.32 947.13 949.94 952.74 955.53 961.08 963.85 966.60 969.35
20 1.00 974.54 977.56 980.57 983.58 986.57 989.56 992.53 995.50 998.46 1001.41 1004.35 1010.20 1013.12 1016.03 1018.93
21 1.05 1021.68 1024.85 1028.02 1031.18 1034.33 1037.47 1040.60 1043.72 1046.83 1049.93 1053.02 1059.18 1062.25 1065.30 1068.35
22 1.10 1068.66 1071.99 1075.32 1078.63 1081.93 1085.23 1088.51 1091.79 1095.05 1098.30 1101.55 1108.01 1111.23 1114.43 1117.63
23 1.15 1115.49 1118.98 1122.46 1125.93 1129.39 1132.84 1136.27 1139.70 1143.12 1146.53 1149.92 1156.69 1160.06 1163.41 1166.76
24 1.20 1162.16 1165.81 1169.45 1173.07 1176.69 1180.29 1183.89 1187.47 1191.04 1194.60 1198.15 1205.22 1208.74 1212.25 1215.74
25 1.25 1208.68 1212.49 1216.28 1220.06 1223.84 1227.60 1231.34 1235.08 1238.81 1242.52 1246.22 1253.60 1257.27 1260.93 1264.58
26 1.30 1255.04 1259.01 1262.96 1266.90 1270.83 1274.75 1278.65 1282.54 1286.42 1290.29 1294.15 1301.83 1305.65 1309.47 1313.27
27 1.35 1301.25 1305.37 1309.49 1313.58 1317.67 1321.74 1325.80 1329.85 1333.89 1337.91 1341.92 1349.91 1353.89 1357.85 1361.80
28 1.40 1347.30 1351.58 1355.85 1360.11 1364.36 1368.59 1372.80 1377.01 1381.20 1385.38 1389.55 1397.84 1401.97 1406.09 1410.19
29 1.45 1393.19 1397.64 1402.07 1406.48 1410.89 1415.27 1419.65 1424.01 1428.36 1432.69 1437.02 1445.62 1449.90 1454.17 1458.43
30 1.50 1438.93 1443.54 1448.13 1452.70 1457.26 1461.81 1466.34 1470.86 1475.37 1479.86 1484.33 1493.25 1497.69 1502.11 1506.52
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Lifting Discharg Discharg Dischar Discharg Discharg Discharg Dischar Dischar Discharg Dischar Dischar Dischar Dischar Dischar Dischar Sl of the e in e in ge in e e in e in ge in ge in e in ge in ge in ge in ge in ge in ge in No gates Cumec Cumec Cumec inCumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec Cumec in mtr. 583.50 583.55 583.60 583.65 583.70 583.75 583.80 583.85 583.90 583.95 584.00 584.05 584.15 584.20 584.25
1 0.05 52.44 52.58 52.72 52.86 53.00 53.14 53.28 53.42 53.56 53.69 53.83 53.97 54.24 54.38 54.51
2 0.10 104.75 105.03 105.31 105.59 105.87 106.15 106.42 106.70 106.98 107.25 107.53 107.80 108.35 108.62 108.89
3 0.15 156.91 157.33 157.75 158.17 158.59 159.01 159.43 159.84 160.26 160.67 161.08 161.49 162.31 162.72 163.13
4 0.20 208.93 209.49 210.06 210.62 211.18 211.74 212.29 212.85 213.40 213.95 214.50 215.05 216.15 216.69 217.24
5 0.25 260.81 261.52 262.22 262.92 263.62 264.32 265.02 265.71 266.40 267.10 267.79 268.47 269.84 270.52 271.21
6 0.30 312.55 313.40 314.24 315.09 315.93 316.77 317.60 318.44 319.27 320.10 320.93 321.75 323.40 324.22 325.04
7 0.35 364.14 365.13 366.12 367.11 368.09 369.07 370.05 371.02 372.00 372.97 373.93 374.90 376.82 377.78 378.73
8 0.40 415.60 416.73 417.86 418.99 420.11 421.24 422.35 423.47 424.58 425.69 426.80 427.90 430.10 431.20 432.29
9 0.45 466.91 468.18 469.46 470.73 472.00 473.26 474.52 475.78 477.03 478.28 479.53 480.77 483.25 484.48 485.72
10 0.50 518.07 519.50 520.91 522.33 523.74 525.14 526.54 527.94 529.34 530.73 532.12 533.50 536.26 537.63 539.00
11 0.55 569.10 570.66 572.23 573.78 575.34 576.88 578.43 579.97 581.51 583.04 584.57 586.09 589.13 590.64 592.15
12 0.60 619.98 621.69 623.39 625.10 626.79 628.48 630.17 631.85 633.53 635.21 636.88 638.54 641.86 643.51 645.16
13 0.65 670.72 672.57 674.42 676.27 678.11 679.94 681.77 683.60 685.42 687.23 689.04 690.85 694.45 696.24 698.03
14 0.70 721.31 723.31 725.30 727.29 729.28 731.26 733.23 735.20 737.16 739.12 741.07 743.02 746.90 748.83 750.76
15 0.75 771.76 773.90 776.04 778.18 780.31 782.43 784.55 786.66 788.77 790.87 792.96 795.05 799.21 801.29 803.36
16 0.80 822.06 824.35 826.64 828.92 831.19 833.46 835.72 837.98 840.23 842.47 844.71 846.94 851.39 853.60 855.81
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17 0.85 872.22 874.66 877.09 879.52 881.94 884.35 886.75 889.15 891.55 893.94 896.32 898.69 903.42 905.78 908.13
18 0.90 922.23 924.82 927.40 929.97 932.53 935.09 937.64 940.19 942.73 945.26 947.78 950.30 955.31 957.81 960.30
19 0.95 972.10 974.83 977.56 980.28 982.99 985.69 988.39 991.08 993.76 996.44 999.10 1001.76 1007.07 1009.70 1012.34
20 1.00 1021.82 1024.70 1027.57 1030.44 1033.30 1036.15 1038.99 1041.83 1044.65 1047.47 1050.29 1053.09 1058.68 1061.46 1064.23
21 1.05 1071.39 1074.42 1077.44 1080.46 1083.46 1086.46 1089.45 1092.43 1095.40 1098.37 1101.32 1104.27 1110.15 1113.07 1115.99
22 1.10 1120.82 1124.00 1127.17 1130.33 1133.48 1136.63 1139.76 1142.89 1146.01 1149.12 1152.22 1155.31 1161.48 1164.54 1167.60
23 1.15 1170.10 1173.43 1176.75 1180.06 1183.36 1186.65 1189.93 1193.21 1196.47 1199.73 1202.97 1206.21 1212.66 1215.87 1219.08
24 1.20 1219.23 1222.71 1226.18 1229.64 1233.09 1236.53 1239.96 1243.38 1246.79 1250.19 1253.58 1256.97 1263.71 1267.06 1270.41
25 1.25 1268.22 1271.85 1275.47 1279.07 1282.67 1286.26 1289.84 1293.41 1296.96 1300.51 1304.05 1307.58 1314.61 1318.11 1321.60
26 1.30 1317.06 1320.84 1324.60 1328.36 1332.11 1335.85 1339.57 1343.29 1346.99 1350.69 1354.37 1358.05 1365.37 1369.02 1372.65
27 1.35 1365.75 1369.68 1373.60 1377.50 1381.40 1385.29 1389.16 1393.02 1396.88 1400.72 1404.55 1408.38 1415.99 1419.78 1423.56
28 1.40 1414.29 1418.37 1422.44 1426.50 1430.54 1434.58 1438.60 1442.62 1446.62 1450.61 1454.59 1458.56 1466.46 1470.40 1474.33
29 1.45 1462.68 1466.91 1471.13 1475.34 1479.54 1483.73 1487.90 1492.06 1496.21 1500.35 1504.48 1508.59 1516.79 1520.88 1524.95
30 1.50 1510.92 1515.31 1519.68 1524.04 1528.39 1532.73 1537.05 1541.36 1545.66 1549.95 1554.22 1558.49 1566.98 1571.21 1575.43
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2.2.8 Summary of Flood Regulation Procedure.
The flood regulation procedures at Karanja Dam can be summarized in the following 5 steps: · 1 Observe the reservoir level at 1-hour intervals. 2 Determine the total outflow occurring at all outlets (including river sluices, canals & spillway) 3 Estimate the inflow by the method given in Para 2.2.6.2 4 Determine the radial crest gate opening from the Para 2.2.6.3 5 Open all6 radial crest gates to the extent required to dispose off the surplus flood as per the procedure described in para 2.2.6.3 6 The procedure being followed in gate operation is as below. a. The end gates should normally be opened first to prevent cross flow striking against the guide walls and junctions. b. At any time during the operation of different gates, the difference in gate opening of any two consecutive gates should not exceed 50 cm. c. After opening the end gates, the gates at the center should be opened and other gates should be opened in symmetrical manner starting from the center towards the end through gradual increase in the openings. d. While closing the gates, the gate that was opened last should be closed first. The procedure to be followed for closing the gates would generally be the reverse of the procedure followed for opening the gates. Complete closure of the gates should be accomplished by gradual lowering of the gates by 20 cm to 30 cm in the proper sequence.
2.3 Operation of Radial Crest Gates of Karanja Dam
2.3.1 Brief Description. Crest Gates· of Karanja Dam have been designed and erected by Tungabhadra steel products private Ltd., Karnataka with spillway crest level of 574.15 m and FRL of 584.15 m. The basic principal of the design is that the water pressure is transferred topier sand abutments through skin plates, stiffeners horizontal girders, arms, trunion, tie flats and anchor girders. The skin plates between bottom and top horizontal girders is designed as supported on the girders. The portion below the bottom horizontal girder up to sill beam and above top horizontal girder and up to FRL is designed as cantilever.
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. 2.3.2 Radial Crest Gates – Technical Data
1. The spillway Radial Gate consist of an upstream curved skin plate of varying thickness from 14 mm to 10 mm, stiffened by suitably spaced vertical 500 ISMB (1/2 cut) stiffeners. 2. The sill beam, wall plates are provided with suitable anchorage for a rigid connection to the spillway crest and the piers Suitable stainless steel plates are welded on the wall plate to match with the rubber seals. The sill beam embedded in the spillway crest are provided sealing surfaces of stainless steel to match with the rubber seal on the bottom of the gates 3. The gate consists of structural steel frame formed by three (3) main horizontal girders supported by radial arms a teach end. These inclined radial arms in turn transmit the load to trunnion brackets installed on trunnion girder spanning between the piers. The water load is transferred through girders to end arms, trunnion brackets to concrete beam and is finally transferred to pier concrete. 4. Gate Assembly The skinplateofthegateconsistsofa10 to 14-mm-thickstainless steel on the u/s side. The skin plate is stiffened by radial shaped vertical stiffeners. which rests on horizontal girders. The vertical stiffeners rest on horizontal girders . which are mounted on suitably braced inclined arms fixed to the trunnion assembly. The skin plate is supported on 3 main horizontal girders which are in turn, supported on a frame of inclined arms. The end arms pivot on trunnion pins mounted on trunnion brackets fixed to the Yoke girder and resting on rest beam (chair) plate. The water load is transferred to pier concrete through Anchor bars welded to anchor girder embedded in pier concrete. The horizontal force due to arm inclination is taken by stiffened D/s flange of horizontal girder at the junction level. This force is taken by the trunnion tie connecting the two trunnion hub limbs. 5. Guide Roller Assembly Each gate has been provided with 3 guide rollers of size dia 130-mm O.D. x 76 mm I.D. x 90 mm width on each side, to check side sway. In fully open position of the gate, two no. guide rollers on each side rests on the wall plate. The rollers are provided with plain bronze bushings turning on fixed pins. The roller pin is 60-mm-dia and is hard chromium- plated with thicknessof40microns The rollers are adjustable and removable type. 6. Trunnion Assembly The trunnion assembly consists of a single piece cast steel trunn1o:hub having 10 680 mm and 00 I 030 mm, to which the arms of the gates are rigidly connected to ensure full transfer of load. 580-dia. sta1nlesssteel trunnion pins with bush bearings of size 580 I.D. x 680 O.D. are used. The trunnion pins are hard chromium plated to 40 microns The trunnion pins connect trunnion hub to radial arms. 7. Seal Arrangement The radial gate is seated at the bottom by contact of bottom edge of skin plate and wedge type bottom seal of 16-mm-thickness and side seals of thickness 16 mm (Z- Type). 2.3.3 Salient Features Spillway radial crest gate 1) No of Gate :6 Nos 2) Size of Gate :15.00 x 10.00 Meter 3) Full Reservoir Level :584.15 M 4) E.L of Top Gate :584.15 M 5) Elevation of Sill beam :576.896 M 99
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6)Radius of Gate to inside Face of skin plate :12.00 M 7) Trunion pin centre Elevation :579.149 M 8) Capacity of Hoist :125.00 MT 9) Type of Hoist : Down stream suspension Rope Drum Hoist 10) Lifting & Lowering speed of Gate :0.5 M/Min 11) Maximum Lift of Gate :10.2 M ROPE DRUM HOIST FOR SPILLWAY RADIAL CREST GATE 1) Type :Downstream Rope Drum Hoist 2) Operation :Operating spillway Radial Gate 3) Capacity : 125 T 4) Maximum Lift of Gate : 10.20 M 5) Operating Speed : 0.5 M/Min 6) Motor:- 30 hp, 970 rpm, tefc Class”B” Insulation, S 1 continuous duty, 400-440 V, 50 cycles/sec. squirrel ooge, induction Motor , Shaft extended on both sides 1 No Frame size AM 200 CK 6 7) Worm Reducer:- Size-14” 60:1 ‘O” type, Input Hp-30. Input speed-970 RPM Output shaft extended on both sides and self locking 8) Brake :- 300 dia EM Brake, single phase, 100% coil Rating 400/440 V, 50 C/S, having torque capacity of 38.8 kg M, class ‘B’ insulation 9) Wire Rope:- 44 mm Dia 6/37 Fiber Main Core ungalvanized with UTS 180 Kg per sq mm and breaking load 102956 Kg. conforming to IS 2266 SPILLWAY STOP LOG GATE 1) No of Gate : 1 No(total 6 element) 2) Gate size : 15 M X 10 M 3) Full Reservoir Level :584.149 M 4) Sill Elevatin : 573.929 M 5) Capacity of Hoist : 80 MT 6) Type of Hoist : Gantry crane
2.4. Operating Instructions The Gates are operated by electro-mechanical system (rope-drum type). This system is capable of fully opening or fully closing the gates holding them fully opened or in any intermediate position, during either the opening or closing operation. The closing time and the opening time is 10 minutes. The limit switches mounted on the panel board unit are set to stop the hoist when the units reach the required opening. The gate opening indicator dial gauge is fixed to the rope drum which gives the height of gate opening while raising or lowering the gate
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2.4.1 Checklist Before Operation The following steps are to be taken before operation of the gates to ensure these eight critical functions are in good working condition.
Sequence Description Actions to be carried out Seal Step 1 The seal clamp fixing should be such as to ensure that the side Clamp seals are flexible enough Guide Step 2 The location and alignment of guide rollers should be checked. Roller Limit Limit Switches shall. be checked for satisfactory operation Step 3 (function) to stop the hoist automatically when the gate. Switch reaches the fully opened or fully closed position Nut & All nuts, bolts and screws shall be checked for wear, tear and Step 4 Bolts tightness Gate pin, connecting pin and all other pins should be in Step 5 Pins proper position and ensure that the nuts and split pins are tight and proper To ensure that the proper Hydraulic Oil of Servosystem-68 (IOC) or Euklo-68 (HP) or AVLON-68 (TWL) is used and Step 6 Oil level should be filled to the desired level in hoist cylinders. The oil should not be allowed to be mixed up with water for which· necessary precaution has to be ensured during operation and maintenance of gates. Trunnion Step 7 To check and apply the high pressure lubricating grease in Lubrication trunnion bushing from the hole provided in trunnion hub Control Panel shall be checked for its suitability for the purpose envisaged. The check may include items such as Control Step 8 weather proofing, conducting wires, etc. In case of any contact Panel chatter, clean the magnet surface and try again. If the chattering continues, check the coil voltage and replace the contact / coil, if necessary
2.4.2 Electricty operated Hoisting Arrangements for Radial Crest Gates The main component of hoisting system for operation of the crest gates of Karanja Dam spillway is the power-pack, mounted on top of the pier downstream of the spillway bridge. The electrical power pack consists of electrical and electronic control for supply of power to the induction motor. The system which is called the control panel is mounted on the shorter side of the motor assembly. On the face of the control panel, controls are provided for various operation of the gate and also gauges indicating the power input and output. There are •also pilot lamps to indicate the operation is in progress. The hoisting system is provided with limit switches to cut off power supply when the gate reaches the specified position.
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2.5 RESERVOIR LEVEL The reservoir level measuring in Lavel plate fixing in up steam side of pier’s
2.5.1 RIVER OUTLET WORKS: The system consists of mechanical hoisting assembly, sluice gate chamber with service platform and stilling basin.
2.6 DESCRIPTION 2.6.1 RIVER SLUICE GATES:
The Karanja dam is provided with 2 Nos, Canal Sluice gate of
There are two outlets one on either banks with details as indicated below; Left Bank Sluice Right Bank Sluice 1 Location Ch: 1070 m Ch: 2790 M 2 Sill level RL. 575.15 m RL. 575.15 m 3 Size of vent 1 m x 1 m 2.78m x 2 m 4 No. of vents One Two 8 Discharge capacity 1.98 cumecs 16.938 cumecs ( 70 Cusecs ) (598 Cusecs)
2.6.2 Operation: 2.6.2.1 General Water is being released to the irrigation canals when there is a sufficient storage in the reservoir according to the instructions and proceedings of the ICC meeting headed by the concerned district in charge minister of Karnataka Govt.,
2.6.2.2 Restrictions: Karanja river is main tributary of Manjra river having in Bidar district in Karnataka & flows for a length of 31 km LBC and 131 kms of RBC before joining the back waters. This project comes under the Godavari Water Dispute Tribunal which allocates and enforces to use 7.691 TMC of water per year.
2.6.2.3 Mechanical:
River Sluice Gates and Irrigation Sluice Gates are operated by mechanical system and inThe discharge calibration tables for discharge through canal sluice and canal sluice gates have been made on the basis of the formula Q= 0.85*sqrt (2gH)*A. Where :
A = Area of sluice gate opening. G = Acceleration due to gravity. H = Height measured from water level in the reservoir to the centre of the opening.
Table 14- Calibration chart for discharge through River Sluice gate of Karanja Dam. Sill level of the gate =1887.00ft
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Table -17 Discharge RBC Size of the gate is 2.78x2.00 m and LBC 1 mX 1m
Sl No Lifting of gate RBC Discharge in LBC Discharge in cusecs height in meter cusecs 1 0.60 77.36 26.00 2 0.70 93.06 32.00 3 0.80 101.58 39.46 4 0.90 128.90 46.47 5 1.00 145.00 54.80 6 1.10 163.97 63.30 7 1.20 183.71 8 1.30 202.25 9 1.40 225.61 10 1.50 243.76 11 1.60 270.73 12 1.70 294.06 13 1.80 319.07 14 1.90 344.46 15 2.00 376.64 16 2.10 397.63 17 2.20 425.43 18 2.30 454.09 19 2.40 483.64 20 2.50 513.66 21 2.60 544.48 22 2.70 578.50 23 2.75 598.00
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2.6.3 References: 2.6.3.1 Drawings: The relevant drawings are enclosed in ANNEXURE – I Figure 13 Radial Gate line diagram
f
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Figure 14 Painting to Stoplog Elements & Radial Gates 105
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Hoist arrangement photo in Karanja Dam Figure 15 Reaming of Body and Foundation Holes in Drainage Gallery
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Figure 16 Lighting Arrangement to Drainage Gallery
Figure 16 Painting to Radial Gates 107
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Painting to Gantry Crane Painting & Servicing to Sluice Gate Cleaning of Seepage Well Figure 17
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Sand blasting & Painting to Stoplog Elements Figure 18 Turning on D/s
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SDBC Road Adjacent to Bund Figure 19 DSRP Team inspection
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Servicing to Sluice Gate Figure 20 Shed for Sluice Gate
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1.7 Access Roads
2.7.1 Description (Type of road, length, bridges, maintaining agency, etc.) Type of road: Asphalt road. Length: 3.45 kmtr Bridges: Nil Maintaining agency: Maintaining departmentally. 2.7.2 Condition: 2.7.3 General: Road is in good condition 2.7.4 Deficiencies and problems Nil
1.8 Record Keeping Operating a dam includes keeping accurate records of items pertaining to project operation. These include but not limited to the following: - 1.Rainfall and Reservoir Levels – On daily basis during non-monsoon and on hourly basis during monsoon. (see Chapters 2, 3 and 4 for detailed instructions and procedures) 2.Release through outlet/sluices on daily basis for irrigation, water supply, hydropower etc. 3.Outflows through spillway during monsoon on hourly basis. 4.Records of drawdown with reservoir levels, quantity of water released, drawdown rates, reason for drawdown. 5.Other Procedures – Maintain a complete record of all operating procedures for gates, sluices.
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Chapter 3 -Project Inspections
The current practice of Inspection at Karanja dam envisages the Subdivision Officers to carryout pre- monsoon and post-monsoon inspections. The checklist proforma included in this chapter is currently in use at Karanja dam. Detailed description on project inspections is available in the Guideline for Safety Inspection of dams (Doc No. CDSO_GUD_DS_07_ v1.0), CWC 2018 (https:// damsafety.in/ecm includes /PDFs/Guidelines_for_Safety_Inspection_of_Dams.pdf). However, an overview of the various types of inspections to be carried out at Karanja dam is given below. Note that for uploading Inspection Data into DHARMA, the Inspection Instructions & Forms given in the aforementioned Guideline for Safety Inspection of Dams must be used (see Appendix 5)).An effective inspection program is essential toidentify problems and to keep Karanja Dam in a good and healthy condition This Chapter provides guidance on carrying out other inspections. 3.1 Types of Inspections Four different types of dam safety inspections are available for being carried out at Karanja Dam. These include, but not limited, to the following: 1. Comprehensive evaluation inspections 2. Scheduled inspections (Pre & Post monsoon inspections & other scheduled inspections) 3. Special (unscheduled) inspections 4. Informal inspections The frequency of each type of inspection depends on the condition of the dam and State DSO regulations, etc. Typical inspection elements and the detail of the safety inspections are provided below. More detailed descriptions are given in the ‘Guideline for Safety Inspection of Dams’ (CWC 2018). A checklist has been modified from the guideline to fit Karanja requirements and is found in Appendix 5. This comphrehensive checklist allows for recording the status of each item being inspected and the overall condition of the equipment along with any consequential risks the condition may have on the health of the dam. 3.1.1 Comprehensive Evaluation Inspections
For comprehensive dam safety evaluation for each dam an independent panel of experts known as Dam Safety Review Panel (DSRP) needs to be constituted for determining the condition of the dam and appurtenant works. The panel will undertake evaluation of the dam once in 10 years or on occurrence of any extreme hydrological or seismic event or any unusual condition of the dam or in the reservoir rim. The terms of reference of the comprehensive dam safety evaluation shall include but not be limited to;
1. General assessment of hydrologic and hydraulic conditions, review of design flood, flood routing for revised design flood and mitigation measures. Review and analysis of available data of dam design including seismic safety, construction, operation maintenance and performance of dam structure and appurtenant works. Evaluation of procedures for operation, maintenance and inspection of dam and to suggest improvements / modifications. 114
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Evaluation of any possible hazardous threat to the dam structure such as dam abutment slope stability failure or slope failures along the reservoir periphery. A comprehensive evaluation inspection of Karanja consists of five major parts: 1. Review of project records (i.e. study of all design / construction records/drawings, history of the dam’s performance, past inspection notes/reports, notes on distress observed/ any rehabilitation measures undertaken earlier, instrumentation data and its interpretation including. 2. Inspection of the dam and its appurtenant works. 3. To review the results and reports of additional field investigations & laboratory testing as required. 4. Review of design studies e.g. review of design flood, checking of the adequacy of spillway capacity, freeboard requirements, dam stability, any special study as required. 5. Preparation of a detailed report of the inspection. 3.1.2 Scheduled Inspections Scheduled inspections shall consist of Pre-monsoon & Post-monsoon inspection and any other inspections carried out by the State Dam Safety Organisation / any Expert panels constituted by the dam owner. These inspections are performed to gather information on the current condition of the dam and its appurtenant works. This information is then used to establish needed repairs and repair schedules, and to assess the safety and operational adequacy of the dam. Scheduled inspections are also performed to evaluate previous repairs. The purpose of scheduled inspections is to keep the dam and its appurtenant structures in good operating condition and to maintain a safe structure. As such, these inspections and timely maintenance will minimize long-term costs and will extend the life of the dam. Scheduled inspections are performed more frequently than comprehensive evaluation inspections to detect at an early stage any developments that may be detrimental to the dam. These inspections involve assessing operational capability as well as structural stability and detection of any problems and to correct them before the conditions worsen. The field examinations should be made by the personnel assigned responsibility for monitoring the safety of the dam. If the dam or appurtenant works have instrumentation, the individual responsible for monitoring should analyze measurements as they are received and include an evaluation of that data. Dam Inspection Report or an inspection brief should be prepared following the field visit (Dam Inspection Report is recommended). Scheduled inspections include the following four components as a minimum:
File review of past inspection reports, monitoring data, photographs, maintenance records, or other pertinent data as may be required;
Visual inspection of the dam and its appurtenant works;
Preparation of a report or inspection brief, with relevant documentation and photographs. The report should be filed in the dam owner’s project files. 3.1.3 Special (Unscheduled) Inspections Special inspections may need to be performed to resolve specific concerns or conditions at the site on an unscheduled basis. Special inspections are not regularly scheduled activities, but are usually made before or immediately after the dam or appurtenant works have been subjected to unusual events or conditions, such as an unusually high flood or a significant earthquake. These inspections are to be carried out after an initial assessment based on informal inspection carried out by project personnel reveal dam safety related concerns like cracking in the dam, damages, erosion/ scour, undermining/ piping/ sink holes/ liquefaction or any such undesirable feature. A special inspection may also be performed during an 115
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emergency, such as an impending dam breach, to evaluate specific areas or concerns. They are also made when the ongoing surveillance program identifies a condition or a trend that appears to warrant a special evaluation. Special inspections should focus on those dam components that are affected by the unusual event and should include at least three elements: 1) review of relevant files or data, 2) visual inspection, and 3) report preparation. More detailed site investigations / studies may be required (such as drilling, surveys, or seepage flow estimates) if the special inspection reveals the need for the same. Photographic documentation is to be included as part of the inspection. 3.1.4 Informal Inspections The last type of inspection, an informal inspection, is a continuing effort by on-site personnel (dam owners/operators and maintenance personnel) performed during their routine duties. Informal inspections are critical to the proper operation and maintenance of the dam. They consist of frequent observations of the general appearance and functioning of the dam and appurtenant structures. Operators, maintenance crews, or other staff who are posted at Karanja dam site conduct informal inspections. These people are the “first-line of defense” in assuring safe dam conditions, and it is their responsibility to be familiar with all aspects of the dam. Their vigilance in walking the dam, checking the operating equipment, and noting changes in conditions may prevent serious mishaps or even dam failures. Informal inspections are important and are performed at every available opportunity. These inspections may only cover one or two dam components as the occasion presents itself, or they may cover the entire dam and its appurtenant structures. The informal inspections are not as detailed as comprehensive evaluation, scheduled, and special inspections and will only require that a formal report is submitted to the dam owner’s project files if a condition is detected that might endanger the dam. Report is to be submitted detailing the condition discovered along with photographs, time, reswervoir water level (RWL), etc. 3.2 Pre- and Post-Monsoon Check list and Example of Report Proformas Detailed checklists are required to ensure the health of the dam continues to operates in satisfactory and safe condition. Details of the inspection must be in alignment with the DHARMA approved checklist attached to this document (see Appendix 5).
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PRO FORMA FOR PERIODICAL INSPECTION OF LARGE DAMS FOR KARANJA PROJECT Date of Inspection: ………………….. GENERAL: Sl.No Item of Inspection Remarks 1 1a 1b 2 3 1. Name of project Karanja Project 2. Purpose of Project Irrigation 3. Name of Dam Karanja Dam 4. Year of Completion 1989 5. First filling (years / levels) Partial filling up to 5.45 mtr above the crest (upto 579.60 m) during 6/1989 was done. 6. Benefits accrued: a) Irrigation 29227 Ha will be irrigated b) Water Supply Regional drinking water supply has to be considered whenever demanded c) Power NIL d) Other benefits NIL 7. Important Controlling Levels (in meters) a) Top of dam 590.00 m (With proposed solid parapet wall of 0.85 m height) b) Maximum Water Level 587.15 (586.71m as per model study) c) Full Reservoir Level 584.15 m d) Sill level of Irrigation sluices 575.15 m e) Sill level of scouring sluices Not provided since crest level of spillway is lower than 1 mtr ie 574.15m f) Spillway crest level 575.15 m g) Minimum draw down level 577.84 m h) Lowest river bed level 568.45 m i) Deepest foundation level 561.00 m 8. Important Salient Features a) Dead Storage Capacity 10.62 m cum or 0.375 TMC b) Area of foreshore at F.R.L 5673 Ha c) Design flood adopted (PMF / SPF PMF, 13282 Cum(4,69,000 Cusecs) / Any other) Give relevant magnitude d) Design spillway discharge i) 8282 Cumecs (2,96,000 Cusecs) routed flood capacity and type of spillway discharge @ RL 586.715 m ii) 5762 Cumecs (2,50,000 Cusecs) @ RL 584.15 m e) Type, number and size of spillway Radial Crest Gates 6 Nos. size 15m x 10 m gates
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f) Location, sill level and capacity of Not provided low level outlets and scouring sluices. g) Height of the dam in meters 20.70 Mtr i) above deepest foundation 21.45 m including 0.85 m height of parapet at RL 590.00 m ii) Above lowest river bed 21.60 m at RL 568.40 m h) Gross storages capacity in million cubic meters i) At F.R.L. 217.66 m.cum ii) At M.W.L 218.72 m.cum i) Length of the dam (at crest) in 3480.00 mtrs meters. 9. Name and designation of the Sri. inspecting officer Executive Engineer, KNNL KPC Division No.1, Bidar Reviewing Officer Sri. Superintending Engineer, KNNL, IPC Circle, KALBURGI 10. Date of inspection and the Inspected by the Executive Engineer, corresponding reservoir water On Dated ______level Water level ______Meter Gross Capacity ______4 TMC and By Superintending Engineer, KNNL, IPC Circle, Kalburgi. On dated______Water level ______Meter Gross Capacity ______TMC 11. Maximum and minimum water Maximum water level RL______Meter levels reached during the last Gross Capacity ______TMC On dated: season with dates ______Minimum Level RL: ______Meter Gross Capacity ______TMC On dated: ______12. Maximum overflow during NIL preceding monsoon with dates 13. History of past distress, if any, NIL and brief details of remedial measures carried out
14. Does the officer-in-charge of Yes the operation and maintenance
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of dam possess all the records as given in the Annexure-I. 15. When and by whom was the dam inspected immediately Inspected by Sri. ______proceedings this inspection? Chief Engineer IPZ Kalburgi On dated______Water level ______Meter Gross Capacity ______TMC and instructed to complete the balance work of DRIP 16. Are the items pointed out during the last inspection YES properly attended to? (if not state deficiencies yet to be corrected).
Asst. Executive Engineer, KNNL Executive Engineer, KNNL KP Dam Sub-Divn. No. 3, Halhalli KPC Divn. No. 1, Bidar
Superintending Engineering, KNNL Chief Engineer, KNNL, I.P.C Circle, Kalburgi. I.P Zone, Kalburgi.
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ANNEXURE – B REVISED PROFORMA FOR HEALTH STATUS REPORT OF LARGE DAMS (Keeping in view CWC letter No. 627-56 dt. 28-08-2002) Sl.No. Items of the “Health Status Report” Reply 1. Name of Dam Karanja Dam 2. Sl. No. in the National Register 195 of Large Dams 3. Dam features a) Date of Completion 1989 b) Location Near Byalhalli i) Longitude 77° - 19’ ii) Latitude 17° - 53’ Height of Dam 21.60 Mtrs including parapet Gross Capacity (Gated/Undated) 217.65 Mcum or 7.69 TMC Gated Whether the Dam is provided with Yes Provided Drainage Gallery or not. 4. Main Component of Dam Concreted spillway and both flanks with earthen dam 5. Date of Inspection 03-05-2017 6. Inspecting Officer Executive Engineer, KNNL KPC Division. No. 1, Bidar 7. Observations/Significant Deficiencies Noticed Inadequate spillway, a) The radial gates and stop log elements, rubber seals are worn out and some repair works to be taken up. b) In RB sluice gate repair. Both above repair work are taken up and these are completion. Spillway is adequate as observed so far (keeping in view of design) however, keeping in view of 3.3 of i) Inadequate spillway National water policy 2002. The verification of the same is under process and time frame fix expires 8.6.2007 ii)Inadequate free Board ……do….. iii)Cracks in Mansnry/Concrete/Earthen Dam No cracks are found a)Masonry/concrete dams and No cracks are found b)Structural cracking in earthen dams ……No….. iv)Indequate Keeping in view of the article 3.3 and17.1 to 7.50 of National water policy 2002, verification of flood a)Flood forecasting system forecasting, flood warning system and communication facilities under process and time frame fixed on b)Flood warning system Provided by siren c)Communication Phone is not provided now to be provided 120
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Sl No Items of the “Health Status Report” Reply v)Excessive seepage through a)drainage holes See[age quantified at 1.39 lit/minute average b)Porous holes There is slight seepage c)Downstream face of dam No seepage is observed To ascertain the development of high uplift pressure is d)Development of high uplift pressure under process the matter is referred to Research station khadawasla, pune Maharashtra vi) Excessive leaching No Excessive leaching is observed vii)Chocking of porous Drains ……No….. viii)Chocking of Drainage Hole ……No….. ix)Malty operation of gates Radial gate with power operation and Hand operation x)Non-availability of stand by/alternative source Stand by with Generator of power Xi)Structural Review indicating tension on the Structural review of the dam has not been taken up upstream face of dam As per para No 24 of National water policy, prepared xii)non-availability of Emergency Action plan action of emergency action plan is under process and time frame fixed expires on 8-6-2007 8) Performance of Dam a)Based on instruments installed in the Discharge through ’V’ Notch should be furnished dam(water level recorder, V-notch etc) b)Of meteorological instruments installed in the Rain Gage stations are provided in catchment area catchment area and reservoirs of Dams c)Is the hydraulic performance in agreement It is under process with the results of model studies? d)Any other issue/issues pertaining to performance of Dam which the Engineer in ………. Chief of Dam desires to included 9) There are no deficiencies observed hence no remedial Remedial measures suggested measures required. 10) Remarks Category Number-3 11) Reply in this regard is to furnished in respect of Dams Action taken report coming under the category number (1) & (2)(details vide Appendix-3)
Executive Engineer KNNL Superintending Engineer KNNL In-charge of Dam In-charge of Dam
Certified that Health status Report of Karanja Dam is furnished after a thorough review of the same by the technical wing of the zone (this has reference to para 18.3.5 of the proceeding of 18th meeting of SLDSC)
Chief Engineer KNNL I.P.ZONE, KALBURGI In-charge of Dam 121
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APPENDIX-1 Performance of Dam Instruments SL Name of Dam Name of instrument Number instrument perfor Section of Rem N with location mance data arks O analysis
1) Karanja Dam near ‘V’ Notch is provided Total 3 number one good ..… ..… Byalhalli village for measuring the on L/S two nos on Tq,Bhalki of Bidar seepage water on D/S Right side. There are District of Dam only 2 Nos are in working condition
Executive Engineer KNNL Superintending Engineer KNNL Chief Engineer KNNL In-charge of Dam In-charge of Dam In-charge of Dam
APPENDIX-2 Performance of Meteorological Instruments of Large Dams in Karnataka State SL Name of Dam Name of Number performance Section of data Remarks N with location instrument instrument analysis O
1) Karanja Dam No-instrument ….Nil…. ….Nil…. ….Nil…. ..… near Byalhalli is provided village Tq,Bhalki of Bidar District
Engineer-in-Chief Water Resources Development Organisation Bangalore APPENDIX-3 (Keep in view CWC Letter No 627-56 Dated 28.08.2002) Category Number Criteria for Categorization
Category (1) Dams with major deficiency which may lead to dam failure
Category (2) Dams with rectifiable deficiency needing immediate attention
Category (3) Dams with minor/no deficiencies has been noticed
Category number is to be furnished in the remark’s column of the Health status Report
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PROFORMA FOR THE INSPECTION OF RESERVOIR AND ITS RIM (To be sent along with the pre/post Monsoon Inspection Reports of large Dams)
Observation and Remarks of Item Item of Inspection recommendation if Receiving No any of the Inspecting Officer Officer Reservoir Rim Look for…….. a) Slides i)Cracks No found No found ii)Scraps No found No found iii)Bulges No found No found iv)Pistol-handled trees No found No found v)Saturated areas in very loose relatively fine grained …..No….. …..No….. material b) Seepage from i)Drainage Gallery Normal seepage Normal seepage ii)Earthen Bund observed observed iii)whirlpools’ Not found Not found C) Debris …..No….. …..No….. i)Trees,bush,bushes,or other vegetation that might Not found Not found block outlet work or spillways d) Erosion i)Stumping Not found Not found ii)Under Cutting Not found Not found iii)Deposition of eroded material at entrance channels Not found Not found outlet works and drains e) Excessive sedimentation i)deposits of sedimentation at the head of the reservoir Not found Not found or near the rim
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APPENDIX-1 Performance of Dam Instruments
Sl. Name of Dam Name of No. of Performan Status of data Remark No. with location Instrument Instrumen ce Analysis s ts 1 2 3 4 5 6 7 (Vide Annexure-1)
Asst Exe Engr, Executive Engineer Superintending Engineer Chief Engineer in-charge of dam. in-charge of dam. in-charge of dam in-charge of dam.
APPENDIX-2
Performance of Meteorological Instruments pertaining to Large Dams in Karnataka
Status of Sl. Name of Dam No. of Name of Instrument Performance data Remarks No. with location Instruments Analysis 1 2 3 4 5 6 7 Details to be furnished by WRDO Bangalore.
Engineer-in-Chief, Water Resources Development Organization, Bangalore.
APPENDIX-3 Categorisation of Deficiencies (Keeping in view CWC letter No. 627-56 dt. 28-08-2002)
Category No.* Criteria for categorization
Category No. (1) Dams with major deficiency which may lead to dam failure
Category No. (2) Dams with rectifiable deficiency which needs immediate attention.
Dams with minor / no deficiencies has been noticed. Category No. (3)
* Category Number is to be furnished in the ‘remarks’ column of the Health Status Report. 124
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Chapter 4 - Project Maintenance
A good maintenance program protectsKaranjaDam against accelerating deterioration, prolongs its life, and greatly reduce the chance of failure. Nearly all the components of KaranjaDam and its materials are susceptible to damage and deterioration if not well maintained. Moreover, the cost of a proper maintenance program is small compared to the costs of major repairs, loss of life and property and litigation. Preventative maintenance not only protects the dam and its owner but the public as well. If maintenance of a dam is neglected the consequences and costs will multiply. Preventive maintenance assures that a dam and reservoir are in good working condition and prevents more harmful conditions from developing. Individual maintenance tasks are noted, with a description of the area where the maintenance is to be performed, the schedule for performing the tasks, and reporting procedures. Typical routine maintenance tasks performed includes mowing grass, removing vegetation, bushes and trees, removing litter and other debris, re-grading the crest and/or access roads, repairing fencing to keep livestock off the dam, etc. Other maintenance works that need to be performed on the embankment includes restoration of embankment to its design section, seepage problems, erosion, displaced riprap, cracking in embankment etc. In concrete / masonry dams there may be issues like cracking and disintegration in concrete, choking of drainage holes in dam body/ foundation, damages to spillway glacis/piers/energy dissipaters due to abrasion/ cavitation/unsymmetrical flows, damages to pointing on upstream & downstream faces of masonry dams, heavy seepages through some drains in foundation/inspection galleries etc. A basic maintenance program has been developed primarily based on systematic and frequent inspections. 4.1 Maintenance Priorities For Karanja Dam, maintenance activities require to be prioriitized as immediate maintenance or preventative maintenance. 4.1.1 Immediate Maintenance The following conditions are critical and call for immediate attention & reservoir lowering, if warranted. These conditions may include, but are not limited to: The dam is about to be overtopped or being overtopped during high flood. The dam is about to be breached by erosion, slope failure etc. The dam showing signs of piping or internal erosion indicated by increasingly cloudy seepage or other symptoms. The spillway being blocked or with some inoperable gates. Evidence of excessive seepage appearing anywhere on the dam site,e.g.,the Embankment becomes saturated, defective water stops, etc., and seepage exiting on the downstream face is increasing in volume. Although the remedy for some critical problems may be obvious (such as clearing a blocked spillway or repairing the spillway gates so that they are in working condition), the problems listed above generally demand the services of experienced engineers/expert panels familiar with the design, construction and maintenance of dams. The emergency action plan (EAP) should be activated when any of the above conditions are noted.
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4.1.2 Preventive Maintenance This can be further classified as Condition based Maintenance and Routine Maintenance. 4.1.2.1 Condition Based Maintenance The following maintenance should be completed as soon as possible after the defective condition is noted. These includes but are not limited to: Remove all vegetation and bushes from the dam and restoring any eroded areas and to establish a good grass cover. Fill animal burrows. Restore and reseed eroded areas and gullies on embankment. Repair of defective gates, valves, and other hydro-mechanical equipment. Repair any concrete or metal components that have deteriorated. Cleaning of the choked drainage holes in the dam body/ foundations in concrete / masonry dams. Repair any damages on spillway glacis, piers, energy dissipaters, training/divide walls, downstream areas etc. Repairs on the upstream face of masonry dams, in case the pointing is damaged, due to which there is increased seepage. Controlling any heavy seepage in the foundation/ inspection galleries in Concrete/Masonry dams from drainage holes. Repairs of any cracks/cavities/joints in concrete/masonry dams/structures. However, many of these works will require the services of experienced engineers/expert panels. 4.1.2.2 Routine Maintenance Several tasks should be performed on a continuous basis. These include but are not limited to the following: Routine mowing, restore and reseed eroded areas and gullies on downstream face of the left flank embankment and general maintenance including repairs/cleaning of surface drains on downstream face and in the downstream area. Maintenance and treatment of any cracks/joints/ cavities in Concrete/Masonry dams and spillways based on the recommendations of experienced engineers / expert panels. Observation of any springs or seepage areas, comparing quantity and quality (clarity) with prior observations in the embankment. Monitoring of downstream development which could have an impact on the dam and its hazard category. Maintenance of Electrical & Hydro-Mechanical equipment and systems e. g. Servicing of spillway gates & stop logs, hoisting arrangements, gantry crane, gates/hoist of outlet works/sluices & stand by generator. Maintaining proper lighting at dam top, galleries, etc. Monitoring of seepage in galleries. Monitoring/ cleaning & removal of leached deposits in porous concrete / formed drains in dam body and foundation drainage holes. Maintenance of all dam roads & access roads. Operation of electrical and mechanical equipment and systems including exercising gates & valves. To keep the gate slots, clear of silt/debris. Maintenance/testing of monitoring equipment (instruments) and safety alarms. Testing of security equipment. Testing of communication equipment.
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Any other maintenance considered necessary. 4.2 Procedures for Routine Maintenance The O&M Manual includes detailed instructions and schedules for performing periodic maintenance works at the site. This include maintenance of the dam, the appurtenant works, and the reservoir areas. Methodology / Specifications for carrying out maintenance works of general & recurring nature should be included in the Manual. Dam repairs are scheduled based on severity of the problem, available resources, and weather conditions. For example, if a severe settlement problem (more than envisaged in designs) or cracking is detected on the crest of the dam, it should have a high priority since further degradation could lead to dam breaching. The causes of all major issues / problems should be identified and evaluated by experienced engineers/ Expert Panels so that appropriate remedial measures can be finalized. Correcting minor rill erosion on the downstream slope could be assigned a low priority since it is not a dam safety concern. This type of repair will also be weather dependent, since grass can only be planted during specific times of the year, and the embankment should be dry so that more damage is not inflicted to the embankment slopes. 4.2.1 Earthwork The surfaces of an earthen dam may deteriorate due to several reasons. For example, wave action may cut into the upstream slope, vehicles may cause ruts in the crest or slopes, trails left by livestock can result in erosion, or runoff waters may leave erosion gullies on the downstream slope. Other special problems, such as shrinkage cracks or rodent damage, may also occur. Damage of this nature must be repaired constantly. The maintenance procedures described here are effective in repairing minor earthwork problems. However, this section is not intended to be a technical guide, and the methods discussed should not be used to solve serious problems. Conditions such as embankment slides, structural cracking, and sinkholes threaten the immediate safety of a dam and require immediate repair under the directions of experienced engineers/Expert panels. The material selected for repairing embankments should be free from vegetation, organic materials, trash, and large rocks. If flow-resistant portions such as the core of an embankment dam are being repaired, materials that are high in clay or silt content should be used. If the area is to be free draining or highly permeable (such as pervious shell of an embankment dam) the material should have a higher percentage of sand and gravel. It is usually satisfactory to replace or repair damaged areas with soils like those originally in place. An important soil property affecting compaction is moisture content. Soils that are too dry or too wet do not compact well. One may test repair material by squeezing it into a tight ball. If the sample keeps its shape without cracking and falling apart (which means it is too dry), and without depositing excess water onto the hand (which means it is too wet), the moisture content is near the proper level. Before placement of earth, the repair area needs to be prepared by removing all inappropriate material. All vegetation, such as bushes, roots, and tree stumps, along with any large rocks or trash need to be removed. Also, unsuitable earth, such as organic or loose soils, should be removed, so that the work surface consists of exposed, firm, clean embankment material. Following cleanup, shape and dress the affected area so that the new fill can be placed and compacted in horizontal lifts to the level specified in the technical specifications. Also it must be properly keyed (benched) with the existing material for which proper construction practices ae carried out to “knit” the new fill in to the existing soils to ensure proper bonding. This can be accomplished by using the following simple procedures 1. Scarify the existing soil layer 127
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2. Place new moisturized soils in loose layers up to 20 centimeters thick 3. Compact to required density at optimum moisture content (OMC) 4. Scarify compacted layer 10 centimeters 5. Moisturize the layer before placement of soils 6. Compact 7. Continue process until lines and grades are accomplished. Overbuild can be trimmed back to design lines and grades 8. Seed of turf the fill to minimize erosion processes 9. Water routinely to ensure turf root system is fully developed. Erosion is one of the most common maintenance problems at embankment structures. Erosion is a natural process and its continuous forces will eventually wear down almost any surface or structure. Periodic and prompt maintenance is essential to prevent continuous deterioration and possible failure. Turfing, free from weeds and deleterious materials, is an effective means of preventing erosion. Rills and gullies should be filled with suitable soil, compacted, and then seeded or turfed as necessary. Large eroded gullies can be slowed by stacking bales of hay or straw across the gully until permanent repairs can be made. Erosion is also common at the point where an embankment and the concrete walls of a spillway or other structure meet. Poor compaction adjacent to such walls during construction and later settlement can result in an area along the wall that is lower than the grade of the embankment. People often walk along these walls, wearing down the vegetative cover. Workable solutions include re-grading the area so that it slopes away from the wall, adding more resistant surface protection, or constructing steps. Steps can be provided / constructed at regular intervals along the length of the dam for going from downstream toe to the dam top. All vehicular traffic, except for maintenance, should be restricted from the dam. Paths due to pedestrian, livestock, or vehicular traffic (two and four-wheeled) are a problem on many embankments. If a path has become established, vegetation will not provide adequate protection and more durable cover will be required unless traffic is eliminated. Stones may be used effectively to cover such footpaths. Runoff often concentrates along embankment slopes where the hinge point on the crest is lower than the surrounding crest and runoff ponds in these low areas. The concentrated runoff flows downs the slope cutting the soils and forming rills and gullies resulting in loss of design lines and grades and affecting stability of the structure. Upstream Riprap
The upstream face is protected against wave erosion. Rip-rap is provided for the purpose with filter layers below. Nonetheless, erosion can still occur in existing riprap. Water running down the slope under the riprap can erode the finer filter materials under the riprap and soils leaving voids and loss of grade. Wave runup will also undermine the filter layer especially along the full reservoir level and over time wash out finer material. This can be checked through observance of linear embankment settlement. Sections of riprap that have slumped downward are often signs of this kind of erosion. When erosion occurs on the upstream slope of a dam, repairs should be made as soon as possible. Repairs can be made following the same design details as provided in the embankment section. proper preparation of the surfaces of the existing embankment as described in the earlier paragraph for placement and compaction of embankment. Please refer to IS 8237- Code of practice for protection of Slopes for Reservoir Embankments is recommended to be reviewed and followed for carrying out this repair work.
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Photo 1 – View of rehabilitated upstream riprap. Repair of any noted settlement to be taken up as necessary.
Controlling Vegetation
Keep the entire dam clear of unwanted vegetation such as bushes or trees. Excessive growth may cause several problems: It can obscure the surface of an embankment and not allow proper inspection of the dam. Large trees can be uprooted by high wind or erosion and leave large voids that can lead to breaching of the dam. Some root systems can decay and rot, creating passageways for water, leading topiping erosion. Growing root systems can lift concrete slabs or structures. Rodent habitats can develop undetected. All bushes/trees should be as far as possible removed by root to prevent regrowth. The resulting voids must be backfilled with suitable, well-compacted soils. It is recommended to remove the plants/vegetation at their early stage to prevent or minimize their growing into big trees/bushes, etc. In cases where trees and bushes cannot be removed, the root systems should be treated with environmentally-friendly herbicides (properly selected and applied) to retard further growth. Concerned Government Agencies must be consulted for selection of appropriate herbicides & their use for control of vegetation on dam structures or any water bodies
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Controlling Animal Damage
Livestock are not allowed to graze on the embankment section of the dam. When soil is wet, livestock can damage vegetation and disrupt the uniformity of the surface. Moreover, livestock tend to walk in established paths and thus can promote erosion. The burrows and tunnels of burrowing animals (beaver, muskrat, groundhogs and others) weaken earthen embankments and serve as pathways for seepage from the reservoir. Large burrows found on the embankment should be filled by mud packing. This method involves placing vent pipe in a vertical position over the entrance of the den. Making sure that the pipe connection to the den does not leak, the mud-pack mixture is poured into the pipe until the burrow and pipe are filled with the soil-water mixture. The pipe is removed and more dry earth is tamped into the entrance. As per some US publications, the mud pack is generally made by adding water to 90% earth & 10% cement mixture until a slurry or thin cement consistency is attained. For bigger holes, bentonite coated stones can also be used. All entrances should be plugged with well-compacted earth andgrassy vegetation re-established. Dens should be eliminated without delay. Different repair measures will be necessary if a dam has been damaged by extensive small or large rodent tunneling activity. The area around the entrance can be excavated and then backfilled with impervious material. This will plug the passage entrance to prevent water entry and saturation of the embankment. Controlling Ants and Termites (White Ants)
Ants and termites have become one of the most serious pests for Embankment dams. They both need water to survive and have been found on most of the embankment dams in India. These insects can create problems in the dam itself and with any of its electrical components. In some habitats, ants and termites can move as much or more soil as earthworms, thereby reducing soil compaction. Nest galleries can penetrate in a V-shaped pattern below the nest, penetrating as much as more than one meter deep in the soil. These galleries can create pathways for surface water to penetrate in the dam, resulting in internal erosion and collapse of the surface. Ants and termites left undisturbed can build mounds that can become quite large. These can create problems for mowing. However, frequent mowing can induce the colonies to migrate to neighboring, undisturbed areas. There are many options for managing ants and termites. Use only pesticides labeled as suitable for the location you want to treat. Make every effort to avoid contaminating water with pesticides and ensure . Controlling Damage from Vehicular Traffic
As mentioned earlier, vehicles driving across an embankment dam can create ruts in the crest if it is not surfaced with roadway material and sometimes even when sealed with flexible pavement, especially when the embankment is saturated and overweight trucks use the road. The ruts can then collect water and cause saturation and softening of the dam. Other ruts may be formed by tractors or other off-road vehicles such as motorbikes are allowed to drive up and down the embankment face; these can direct runoff resulting in severe erosion. Vehicles, except for maintenance, are restricted on the dam top and kept out by fences or barricades. Any ruts should be repaired as soon as possible.
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Photo 2 – Dam Crest Paved Road over embankment kept maintained to minimized damages to the embankment structure 4.2.2 Masonry / Concrete Dams & Spillways Various issues/problems that may require maintenance/repairs on the Karanja Concrete/Masonry Dam and Spillway include but not limited to: Damages on spillway glacis, spillway piers, training/divide walls, energy dissipaters, downstream areas (probable causes are cavitation, abrasion, un-symmetrical flows, unfavorable down-stream conditions) Vegetation growth in unattended areas such as spillway, spillway channel, etc. Seepage in the gallerie sand on the downstream face of the dam. Cleaning and removal of leached deposits from choked porous and foundation drains. Repair to upstream face of masonry dams in case the pointing is damaged, leading to increased seepage. Ensuring safe access to and within the gallery, lighting is also required as well as all outside areas during the evening hours. Ensuring the dam is behaving as designed based on instrumentation programs. Periodic maintenance should be performed of all concrete surfaces which are approachable to repair deteriorated areas. For remedial measures of problems of special nature advice of experienced engineers /Panel of Experts needs to be obtained
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4.2.3 River Sluices The sluices should be inspected thoroughly once a year for any damages such as cracks and seepage. As regards to Hydro-mechanical works, reference may be referred to the appropriate paragraphs in this chapter.
Photo 22 – C.E. inspection canal sluice gate Minor repairs carried out annually 4.2.4 Gates & Hoisting Equipment The safe and satisfactory operation of Karanja Dam depends on proper operation of its Gates &Hoisting Equipment. Maintaining spillway gates in working condition is critical for dam safety and is to be assigned the highest priority. If routine inspection of the Hydro-Mechanical Equipment shows the need for maintenance, the work should be completed as soon as possible. The simplest procedure to ensure smooth operation of gates is to operate them through their full range at least once, and preferably twice annually (before monsoon & after monsoon keeping a gap of at least six months). Because operating gates under full reservoir pressure can result in large discharges, exercising of gates should preferably be carried out during dry conditions or lean times of the year using the stop-logs/ emergency gates. Commonly used Gates and Hoists including their inspection / maintenance requirements are discussed below. The aspects to be inspected and maintained periodically for ensuring proper operation of these gates are as under: i) The gate slot and bottom platform/sill beam should be cleaned periodically. Scales formed over the embedded parts should be removed. Second-stage concrete should be checked for any development of cracks / leakages and repairs should be attended to immediately.
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ii) The gate leaf should be thoroughly cleaned and repainted as and when necessary according to the procedure or guidelines- indicated in IS: 14177 or as per the recommendations of the paint manufacturer. All drain holes provided in the gate assembly should be cleaned. iii) Rubber seals should be smoothed, if required, for proper alignment. All nuts and bolts fixing the seal to the gate should be tightened uniformly to required torques. Seals, if found damaged or found leaking excessively should be adjusted, repaired or replaced as considered necessary. iv) The wheel shall be rotated to check their free movement. Gate roller bearings and guide roller bushes should be properly lubricated. Whenever necessary these should be opened for rectifications of defects, cleaning and lubrication and should thereafter be refitted. These may be replaced if repairs are not possible. v) Hoisting connection of the gate leaf should be lubricated where necessary and defects if any should be rectified. vi) All nuts, bolts, check nuts and cotter pins of the lifting devices should be checked periodically. vii) All components should be greased and lubricated. Recommended and approved oils and grease only should be used. viii) Roller assembly should be adjusted by the eccentricity arrangement to ensure all rollers rest uniformly on the track plates particularly in the closed position of the gate. ix) Where filling valves are provided as part of the gate structure, all the nuts, bolts, check nuts etc. should be tightened. x) All welds shall be checked for cracks/ damages. Any weld that might have become defective should be chipped out and redone following the relevant codal provisions. Damaged nuts, bolts, rivets, screws etc. should be replaced without delay. xi) The filling-in valves allow passage of water when it is lifted by lifting beam & crane due to creation of space between stem seat and exit passage liner. The springs and associated components should be checked periodically for damages and replaced if necessary. xii) The guide-assemblies, wheel-assemblies and sealing-assemblies shall be cleared off grit, sand or any other foreign material. xiii) The wheel pin shall be coated with corrosion resistant compound. xiv) All nuts and bolts shall be tightened. The aspects to be inspected and maintained periodically for ensuring proper operation of these gates are as under : a) Rubber Seals: i) Seals shall be inspected for leakages. Locations of excessive leakages shall be recorded for taking remedial measures. Weeping or slight flow in localized area will not require immediate remedial measures. However, measures like tightening of bolts are carried out. Further adjustment is carried out during annual maintenance. ii) If leakage is excessive & immediate repair is considered necessary, the stop log gates shall be dropped and seals repaired or replaced. NOTE: - During monsoon period, stop log gates shall NEVER be lowered in spite of heavy leakage through seals.
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b) Trunnion block assembly and anchorages: (i) All the nuts and bolts of Trunnion block assembly and its anchorages shall be checked for tightness. (ii) Check all the welds for soundness and rectify defects. (iii) Check whether the Yoke girder and thrust block is covered on not. If not, cover it with mild steel plates. (iv) Cover the trunnion pin with anti- corrosive jelly. (v) Remove all dirt, grit etc. from trunnion assembly and lubricate trunnion bearings of the gate with suitable water resisting grease as recommended by bearing manufacturers. c) Gate structures: i) Check all the welds for soundness and rectify defects. ii) Check welds between arms and horizontal girders as well as between latching bracket and skin plate with the help of magnifying glass for cracks/defects and rectify the defects. iii) Clean all drain holes including those in end arms and horizontal girders. iv) Check all the nuts and bolts and tighten them. Replace damaged ones. v) Check upstream face of skin plate for pitting, scaling and corrosion. Scaling may be filled with weld and grinded. Corroded surface shall be cleaned and painted. d) Embedded Parts: i) All the sill beams and wall plates shall be inspected for crack, pitting etc. and defects shall be rectified. ii) The guide roller pins shall be lubricated. e) General Maintenance: i) Defective welding should be chipped out and it should be re-welded duly following the relevant codal provision (IS: 10096, Part-3). ii) Damaged nuts, bolts, rivets, screws etc. should be replaced. iii) Any pitting should be filled up by welding and finished by grinding if necessary. iv) The gate leaf, exposed embedded metal parts, hoists and hoist supporting structure etc., should be thoroughly cleaned and repainted when required keeping in view the original painting system adopted and as per the guidelines contained in IS: 14177. v) Trunnion bearing should be greased as and when required. Keeping trunnion bearings in perfect working condition is very important. All other bolted connections should also be checked up for proper tightness. vi) Bolts and trunnion bearing housing should be tightened wherever required. vii) The seals of the gate should be checked for wear and tear and deterioration. These should be adjusted/replaced as and when necessary. viii) The wall plates, sill beams shall be checked and repaired if necessary. ix) Wire ropes should be properly lubricated. x) Oil level in the worm reduction unit should be maintained by suitable replenishment. Oil seals should also be replaced if required. Lubrication of other parts of hoists such as chains, position indicators and limit switches should also be done. 134
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xi) The stroke of the brake should be reset to compensate for lining wear. Worn out brake linings should be replaced in time. xii) Flexible couplings should be adjusted if required. xiii) Repairs and replacements of all electrical relays and controls should be attended to. xiv) Maintenance of alternative sources of Power such as Diesel Generating sets and alternative drives wherever provided should be carried out. xv) The list of essential spare parts to be kept available should be reviewed and updated periodically. The condition of spares should be checked periodically and protective coating given for use.
4.2.5 Electrically operated fixed hoists
1. General Instructions: a) Operation of fixed hoist without lifting the gate is not possible and need not therefore be attempted. It will be possible to operate the unit and observe operation of load carrying hoist component when gate is being lifted or lowered.
b) Never open any bolt or nut on motor, gear boxes, rope drums and other load carrying hoist components when the gate is in raised position. The gate should be fully closed or rested on the gate latches before carrying out any work on hoist components in- cluding motor brake and other electrical equipment. c) The aspects to be inspected and maintained periodically for ensuring proper operation of Rope drum hoists are as under; i. Entrance to all hoist platforms shall be kept locked. All keys shall remain with the shift supervisor. ii. A cursory daily inspection shall be made of hoist and gate to ensure that there is no unusual happening. iii. Clean all hoisting equipment and hoist platform.
iv. Check oil level in gearboxes and replenish as and when required with oil of proper grade. v. Apply grease of suitable grade by grease gun.
vi. Lubricate all bearings, bushings, pins, linkages etc.
vii. Check all the fuses on the power lines.
viii. All bolts and nuts on gear boxes, hoist drum and shaft couplings should be checked for tightness. ix. Check the supply voltage. 135
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x. Drain sample gear oil from each of the gear boxes. If excessive foreign particles or sludge is found, the gear box shall be drained, flushed and filled with new oil. xi. All the geared couplings shall be greased.
xii. Raise and lower the gate by hoist motor and check for smooth, and trouble- free operation of gate without excessive vibration. xiii. Observe current drawn by motor at the time of lifting and check if it is more than normal. If so, stop the hoist and investigate the cause and rectify. xiv. Check the condition of painting of various components and remove rust where-ever noticed and repaint the portion after proper cleaning as per painting schedule. xv. All trash, sediments and any other foreign material shall be cleared off the lifting rope and lifting attachment. xvi. All ropes shall be checked for wear and tear and if broken wires are noticed, the rope shall be replaced. xvii. All the wire ropes shall be checked and all visible oxidation shall be removed.
xviii. All wire ropes shall be greased with cardium compound.
xix. Check the overload relays for proper functioning.
xx. Check all the nuts, bolts, rivets, welds and structural components for hoisting platform and its supporting structure for wear, tear and damage. All damages shall be
rectified. All bolts shall be tightened. The portion with damaged painting shall be touched up.
xxi. Check the pulleys, sheaves and turn-buckles.
xxii. Raise and lower the gate for its full lift several time (at least three to four) and observe the following:
a) Check the limit switches and adjust for design limits.
b) The effectiveness and slip of the breaks shall be checked by stopping the gate in raising and lowering operations. The brakes shall be adjusted if needed.
c) When the gate is operated, there should not be any noise or chatter in the gears. 136
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Xxiv Adjust the rope tension of wires if unequal.
xxiv. Check for all gears and pinions for uneven wear and adjust for proper contact. Grease the gears.
xxv. Repaint the hoist components, hoisting platform and its supporting structures as per requirement.
xxvi. The periodic maintenance of commercial equipment like motors, brakes, thrusts etc. shall be carried out as per manufacturers operation and maintenance manual.
4.3. Maintenance of Electrical components of Fixed Rope Drum Hoists:
a). The electrical components to be inspected and maintained periodically are as under;
i)Starters should be cleaned free of moisture and dust.
ii) Each individual contactor should be tried by hand to make sure that it operates freely.
iii) All wearing parts should be examined in order to take note of any wear which may have occurred during operation.
iv) If the contactor hums, the contact faces should be cleaned.
(i) Examine all connections to see that no wires are broken and no connections are loose.
vi) Clean the surface of the moving armature and magnet core which comes together when the contactor closes, free of dust or grease of any kind.
vii) Examine the mechanical interlocks between the reversing contactor and see when the contact tips of one of the contactor units are touching, it is impossible to get the contact tips of the other unit to touch.
viii) The contact tips should be kept free from burns or pits by smoothening with fine sand paper or emery paper.
ix) Replace the contact tips which have worn away half-way.
x) Do not lubricate the contacts.
xi) Blow out windings thoroughly by clean and dry air to clear air passage in the stator and the rotor of any accumulated dirt. The air pressure shall not be too high to damage the insulation.
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xii) Examine earth connections and motor leads.
xiii) Examine motor windings for overheating
xiv) Examine control equipment’s
xv) Examine starting equipment for burnt contacts
xvi) Check and tighten all nuts and bolts
xvii) Clean and tighten all terminals and screw connections all contact surfaces shall be made clean and smooth.
xviii) Lubricate the bearings
xix) Overhaul the controllers
xx) Inspect and clean circuit breakers.
xxi) Wipe brush holders and check bedding of brushes.
xxii) Blow out windings thoroughly by clean and dry air. The pressure shall not be so high that insulation may get damaged.
xxiii) Check the insulation resistance of the motor between any terminal and the frame. If the measured resistance is less than the prescribed value, then steps shall be taken to dry- out the motors either by passing a low voltage current through the windings or by placing the stator and rotor only in a warm dry place for a day or so.
WARNING: The complete motor shall never be put in an oven for drying as that may melt the grease out of bearings.
xxiv) Coat the windings with an approved high temperature resisting insulation enamel or varnish.
xxv) Over haul the motor, if required.
xxvi) Check the switch fuse units and renew, if required.
xxvii) Check resistance or earth connections.
xxviii) Check air gap.
b) Solenoid Operated Brakes
i) All fixing bolts shall be checked and tightened at least once in three months.
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ii) The magnet stroke should be reset to compensate for wear.
iii) Re-adjust the brake when the magnet stroke reaches the value given on the instruction plate.
iv) Brake lining should be checked and replaced when required.
v) Examine all electrical leads and connections.
vi) Rubber bushes or couplings should be checked and replaced if defective.
vii) The pins should be tightened.
viii) Brake drum shall be cleaned to remove any dust or
grease, lifting beam & gantry crane
4.4 Surface Preparation and Painting of HM Works
i) Protection of painted surfaces is considered essential for protection & enhancement of service life. Gates, their embedded parts, gate leaf, hoists and its supporting structures need to be protected against corrosion due to climatic condition, weathering, biochemical reaction and abrasion etc. This equipment is likely to deteriorate or get damaged to any extent that the replacement of parts may become necessary and such replacement may become difficult and costly.
ii) Surface preparation & Painting requirements:
Painting for hydro-mechanical works is to be carried out as prescribed in IS 14177 for both newly manufactured as well as old & used gates, hoists and associated works after proper surface preparation. The preparation includes thorough cleaning, smoothing irregular surfaces, rusted surfaces, weld spatters, oil, grease, dirt, earlier applied damaged layers of primers/ paint by use of mechanical tools, by use of solvents, wire brush etc. The sand / grit blasting process is used for surface preparation to a level of Sa 2½ of the Swedish standard.
iii) Surfaces not requiring painting & their protection during surface preparation, painting & transportation process:
a) The following surfaces are not to be painted unless or otherwise specified:
• Machine finished or similar surface
• Surfaces which will be in contact with concrete 139
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• Stainless steel overlay surfaces.
• Surfaces in sliding or rolling contact
• Galvanized surfaces, brass and bronze surfaces.
• Aluminum alloy surfaces b) The Surfaces of stainless steel, nickel, bronze and machined surface adjacent to metal work being cleaned or painted shall be protected by using sticky protective tape or by other suitable means over the surfaces not to be painted.
c) All embedded parts which come in contact with concrete shall be cleaned as detailed above and given two coats of cement latex to prevent rusting during the shipment while awaiting installation.
iv) Application of primer &finish coats on embedded parts and gates:
a) EMBEDDED PARTS:
• The prescribed primer shall be applied as soon as the surface preparation is complete and prior to the development of surface rusting and within the specified time pre- scribed by Indian Standards or the Paint Manufacturer. In case there is lapse of con- siderable time beyond the prescribed time limit, the surfaces shall be again cleaned prior to priming.
• Two coats of zinc rich primer with epoxy resin shall be applied to all embedded parts surfaces which are not in contact with concrete and shall remain exposed to atmos- phere or submerged in water to obtain a dry film thickness of 75 microns.
• This shall be followed by three coats at an interval of 24hours of coal-tar blend epoxy resin so as to get a dry film thickness of 80 microns in each coat. Total dry film thick- ness of paint shall not be less than 300 microns. b) GATES: Primer coat:
• Over the prepared surface one coat of inorganic zinc silicate primer giving a dry film thickness of 70 ± 5 microns should be applied. Alternatively, two coats of zinc rich primer, which should contain not less than 85% zinc on dry film should be applied to give a total dry film thickness of 75 ± 5 microns.
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Finished paint:
• Two coats of solvent less coal tar epoxy paints. These shall be applied at an interval of about 24 hours. Each coat shall give a dry film thickness of 150±5 microns. The total dry film thickness of all the coats including primer coating shall not be less than 350 microns.
v) Hoist and supporting structure:
a) Structural components:
Primer coats of zinc phosphate primer shall be applied to give a dry film thickness of 40±5 mi- crons.
Final Coats: One coat of alkalized based micaceous iron oxide paint to give a dry film thickness of 65 ± 5 microns followed by two coats of synthetic enamel paint confirming to IS 2932 – 1974 to give a dry film thickness of 25 ± 5 microns per coat. The interval between each coat shall be 24hours. The total dry thickness of all coats of paint including the primer coat shall not be less than 175 microns.
b) Machinery: Except machined surfaces all surfaces of machinery including gearing, housing, shafting, bearing pedestals etc., shall be given:
Primer coats: One coat of zinc phosphate primer paint to give minimum film thickness of 50 microns. Motors and other bought out items shall be painted if necessary. Finished coats: The finished paint shall consist of three coats of aluminum paint confirming to IS2339 – 1963 or synthetic enamel paint confirming to IS 2932 – 1977to give a dry film thickness of 25±5 microns per coat to obtain a total minimum dry film thickness of 125 microns.
c) Machined surfaces:
All machined surfaces of ferrous metal including screw threads which will be exposed during shipment or installation shall be cleaned by suitable solvent and given a heavy uniform coating of gasoline soluble removable rust preventive compound or equivalent. Machined surfaces shall be protected with the adhesive tapes or other suitable means during the cleaning and painting operation of other components.
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vi) Application of paint: Mix the contents thoroughly as directed by paint manufacturer before and during use.
Painting at shop can be done by any of the three methods namely Brush / roller, Conventional spray, Airless spray etc. The paint can be made to suit the adopted method. But once the gate and equipment is in erected position the general method adopted is only brush / roller. In case of spray lot of precautions are to be taken. For More details: Refer IS: 14177 Part (II) – 1971.
Appendix A – Brushing of paint Appendix B – Spraying of paint Appendix C – Spray painting defects: Causes and remedies.
Removal of old paint / rust and carrying out fresh painting:
The carrying out of fresh painting is to be considered under the following conditions:
• The rusting is noticed all over the surface or
• Rusting is severe or
• Cracking and blistering has damaged the primer coat exposing the metal and is noticed all over the surface or • The paint film has eroded badly, the scrap of entire paint film to the base metal and carry out fresh painting. Note: In case of maintenance and renovation: Refer IS 14177 (Part II) – 1971 for checking and repainting.
vii) Removal of old paint for repainting:
Caution should be exercised while removing the old paint. The surfaces shall be de-rusted and descaled by either mechanically by one or more of the methods, namely: a) Wire brushing, Scraping, and chipping. Sand papering or cleaning with steel wool or abrasive paper b) Power tool cleaning
c) Flame cleaning
d) Sand blasting or shot blasting and
e) Chemical rust removal.
Note: The method of application shall be decided based on conditions existing. After cleaning painting is to be carried out as originally proposed.
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Some are painted without removal of old paint and rusting this will amounts to no painting and deteriorate faster than the original one.
viii) Inspection and testing of painting of H. M works:
a) The following steps are involved in inspection of painting:
General inspection before and during painting
Viscosity test of paints
Paint thickness test – using Elcometer.
Inspection of general appearance of finished work.
b) General:
The aim of inspection and testing is to ascertain whether the recommended practice is being employed correctly during every stage of application and whether the final results fulfill the object of painting. Any test carried out should be of non – destructive nature or, if it is of destructive nature, it should be either restricted to areas which can be restored without marring the general appearances or be such that it is possible to restore easily without necessitating a complete repe- tition of the work. c) Inspection of surfaces prior to painting:
Inspection methods will depend on whether it is to be painted for the first time or is to be re- painted. d) New Works (Not previously painted): The following shall be decided by inspection:
The method of pre cleaning feasible or recommended; The intermediate protective treatments to be applied, if found necessary; The final painting schedule and the specifications for the paint for ensuring the particular performance; The method of application, whether by brush, roller or spray. e) Old Work (Which requires repainting):
The following shall be decided by inspection:
Whether the entire existing paint requires removal; and/or Whether repainting without paint removal would be adequate.
4.5 Electrical System
Electricity is typically used at a dam for lighting and to operate the gates, hoists, recording equip- ment, and other miscellaneous equipment. It is important that the Electrical system be well main-
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tained, including a thorough check of fuses and a test of the system to ensure that all parts are properly functioning. The system should be free from moisture and dirt, and wiring should be checked for corrosion and mineral deposits.
All necessary repairs should be carried out immediately and records of the works kept. Maintain generators used for auxiliary emergency power -- change the oil, check the batteries and antifreeze and make sure fuel is readily available.
Monitoring devices usually do not need routine maintenance. Open areas are particularly susceptible to vandalism. As such all electrical fittings like bulbs, lights, loose wires etc. in open areas should be checked routinely and replaced / repaired where needed. The recommendations of the manufacturer should also be referred to.
4.6 Maintenance of Metal Gate Components
All exposed, bare ferrous metal of an outlet installation, whether submerged or exposed to air, will tend to rust. To prevent corrosion, exposed ferrous metals must be either appropriately painted
(following the paint manufacturer’s directions) or heavily greased in respect of moving parts & on surfaces like guides & track seats on which there is movement of gates. When areas are repainted, it should be ensured that paint is not applied to gate seats, wedges, or stems (where they pass through the stem guides), or on other friction surfaces where paint could cause binding. Heavy grease should be applied on friction surfaces to avoid binding. As rust is especially damaging to contact surfaces, existing rust is to be removed before periodic application of gr-ease.
4.7 Access Roads
For a dam to be operated and maintained, there must be a safe means of access to it at all times. Access road surfaces must be maintained to allow safe passage of automobiles and any required equipment for servicing the dam in any weather conditions. Routine observations of any cut and fill slopes along the sides of the road should be made. If unstable conditions develop assistance of experienced Engineers/Expert Panels should be obtained and remedial measures initiated.
Drains are required to be provided and maintained along roads to remove surface and subsurface drainage. This will prolong the life of the road and help reduce deterioration from rutting. Road surfacing should be repaired or replaced as necessary to maintain the required traffic loadings. In most cases, specialized contractors will be required to perform this maintenance.
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4.8 General Cleaning
As already suggested, for proper operation of spillways, sluiceways, approach channels, inlet and outlet structures, stilling basin / energy dissipation arrangements, discharge conduit, dam slopes, trash racks, debris control devices etc., regular and thorough cleaning and removal of debris is necessary. Cleaning is especially important after large floods, which tend to send more debris into the reservoir.
4.9 Materials and Establishment Requirements during Monsoon Period
Materials required during monsoon period for both immediate maintenance and preventive maintenance must be stocked in adequate quantities for emergency situations that may arise. Needful instructions in this regard is enclosed in the O&M Manual. At Karanja Dam, a 24/7- hour patrol schedule is carried out during monsoon period. At the same time the additional man- agement requirements during monsoon period are enhanced.
4.10 General List of Maintenance Records
Maintenance records are of utmost importance. Records are kept of all maintenance activities, both immediate and preventive maintenance works. Essential information to be recorded include the following:
Date and time of maintenance, Weather conditions, Type of maintenance, Name of person, title and / or contractor performing maintenance, Description of work performed, Length of time it took to complete the work with dates, Equipment and materials used, and Before and after dated photographs.
The data is recorded by the person responsible for maintenance.
4.11 Preparation of O&M budget
The O&M budget for Karanja dam includes the following items:
i) Establishment Cost of Regular Staff - Salaries and allowances, Bonus, Medical Re- imbursement, LTC, Leave Encashment, pension benefits, etc. (as applicable).
ii) Establishment Cost of Work charged Staff - Salaries and allowances, Bonus, Med- ical Reimbursement, LTC, Leave Encashment, Pension benefits, TA and DA, etc. (as applicable).
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iii) Establishment Cost of Daily wage Staff - Salaries and allowances, TA and DA etc. (as applicable).
iv) Office Expenses – Rent for office, Telephone/Mobile/any other Telecommunication bills, Electricity bills, water bills, Office stationery, Day to day office requirements.
v) Motor Vehicles - Running and Maintenance cost of inspection vehicles, Cost of hiring of vehicles as required
vi) Maintenance of Colony - Maintenance of staff quarters, colony roads, Electricity, Sanitary and Water supply systems etc.
vii) T&P - T&P requirements for offices, colony, works etc. as applicable.
viii) Works -Painting, oiling, greasing, overhauling of HM equipment’s, Repair/replacement of gates seals & wire ropes, POL for pumps & generator sets, Electricity charges and maintenance of Electric systems of dam site, specific requirements for all Civil, H.M & Electrical maintenance works, vegetation removal and mowing of turfing on earth dams, maintenance/cleaning of drains in dam, maintenance of lift/elevators in dam (as applicable), maintenance of access roads & basic facilities, provision for flood contingency works during monsoon, unforeseen events/items (about 10% of the cost of works) etc. Table 18 -O&M BUDGET COSTS (ANNUAL)
SL. CURRENT YEAR PREVIOUS NO. BUDGET (YR YEAR COST BUDGET ITEM 2019-20) REMAR (Rs)(2018-19 ) KS (Rs) A.ESTABLISHMENT
SALARY OF 1 13557820 14235711 REGULAR STAFF INCLUDING ALL OTHER BENEFITS
2 TRAVEL EXPENSES 206444 206444
3 OFFICE EXPENSES 5000000 5000000
MOTOR VEHICLE EX- 4 700000 700000 PENSES MAINTENANCE OF OF- 5 6600000 6600000 FICE & COLONY COM- PLEX 146
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SUB-TOTAL - A 26064264 26742155
B. WORKS
1 CIVIL CONCRETE / MASONRY 1.1 1000000 1000000 DAM
1.2 EARTHEN DAM 4500000 4500000
INTAKE / OUTLETS IN 1.3 500000 500000 EARTHEN DAMS SLUICES IN CONCRETE / 1.4 500000 500000 MASONRY DAMS APPROACH / INSPECTION 1.5 1000000 1000000 ROADS WITHIN DAM AREA
2 HYDRO-MECHANICAL
SPILLWAY GATES & 2.1 - 2600000 HOISTS SPILLWAY STOP-LOG & 2.2 4000000 - GANTRY CRANE OUTLETSIN EARTHEN 2.3 2500000 15000000 DAMS - SERVICE / EMER- GENCY GATES & HOISTS SLUICES IN CONCRETE /
MASONRY DAMS – 2.4 3500000 17500000 SER- VICE / EMERGENCY GATES & HOISTS 3 ELECTRICAL ELECTRICAL FITTINGS, 3.1 700000 700000 MOTORS, CONTROLS FOR ALL GATE
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HOISTS
3.2 POWER SUPPLY LINES 500000 500000
ELECTRICAL FITTINGS ON 3.3 1000000 1000000 DAM TOP, DAM GALLER- IES, ETC. STANDBY POWER / DIE- 3.4 600000 600000 SEL GENERATOR
3.4 REMOTE CONTROL/CCTV - -
4 INSTRUMENTATION
5 MISCELLANEOUS WORKS 200000 200000
SALARY OF WORK- CHARGED 6 - - STAFF IN- CLUDINGALL BENEFITS MATERIALSTO BE STORED 7 200000 200000 BEFORE MON- SOON
SUB-TOTAL - B 20700000 45800000
CONTINGENCY (10%) ON 8 4676426.4 7254215.5 SUB-TOTAL OF A & B 9 TOOLS & PLANTS 25000 25000 SUB-TOTAL- C 25000 25000
10 TOTAL ANNUAL COST 51465690.4 79821370.5
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4.12 Maintenance Records
Maintenance records are of utmost importance. A record shall be kept for all maintenance activities, both immediate and preventive maintenance works. Information that must be recorded includes, but not limited to, the following: date and time of maintenance, weather conditions, the type of maintenance, name of person or contractor performing maintenance, description of work performed, the length of time it took to complete the work with dates, equipment and materials used, and before and after photographs.
The data should be recorded by the person responsible for maintenance
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Chapter 5 - Instrumentation and Monitoring
5.1 Dam Instrumentation
5.1.1 General Information This section identifies the location and chainages of each of the 4 structural components of the dam:
Table 19 -Locations and Extents of Structural Members
From Chainage To Chainage
Earthen Embankment
Non-Overflow Section (left of
overflow section)
Over-flow Section
Non-Overflow Section (right of
overflow section)
5.1.2 Embedded Instruments – Concrete/Masonry 6. The various instruments have been embedded in both the masonry / concrete and earthen section. Table 20- Embedded Instruments
Type of No. of Instruments embedded In Sl. Instruments Embedded
Strain meter 1 (Group of 5)
Stress-strain 2 meter
3 Stress meter
Pore pressure 4 meters
5 Thermometers
6 Joint Meters
Pressure 7 Piezometers
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5.1.3 Instruments Embedded in the Karanja Earthen Dam Table 21- Embankment Instruments
Sl. Type of instruments No. of instruments embedded Elevation No 1 Cross-arm Installation i. Center line of dam ii. U/s Side iii. D/s Side
NOTE: Please note that all instruments now to be provided
5.1.4 Seismological Observations
Parameters being permanently Monitored Observations of the following parameters need to be continued but not limited to; • Water levels in the reservoir. • Hydro-meteorological observations. • Seepage observations using V-notches/ weirs etc. • Displacements in the dam by means of survey observations using prism/paper targets fixed at structures, tilt meters or repaired plumb lines, etc. • Uplift pressures at dam base using stand pipes in Gravity dams. In case some of the instruments are not in working condition, following are some of the steps to be done; i) In case connecting cables of the non-working instruments are accessible, the manufac- turer of the said instruments should be approached for checking and rectification of the installations to make instruments work. ii) In case the embedded non-working instruments cannot be repaired, the same are to be abandoned. Frequency of Monitoring As a rule of thumb, simple visual observations should be made during each visit to the dam and not less than monthly. Immediate readings should be taken following a storm or earthquake. Suggested frequency of measurements is given in the following table.
These are generally as per the Guidelines on Instrumentation for dams (CWC).
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Table 22- Frequency of Readings for Karanja Dam.
MINIMUM FREQUENCY No. INSTRUMENT OF READING 1 Piezometers (Manual Readout unit) Daily 2 Uplift Pressure gauge Monthly 3 V Notch Daily Additional Instruments 4 Automatic Weather Station Daily Plumb line ( Normal & Inverted) 5 Monthly Automatic only 6 Thermometers Daily 7 Tilt meters Monthly 8 Uplift gauges Monthly 9 Data centre at dam site logger etc Daily 10 Total station Monthly 11 Gate Sensor Daily 12 Sirens -
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Chapter 6 - Previous Rehabilitation Efforts
Before DRIP, maintenance activities were limited to routine greasing, oiling, and patch painting of hydro- mechanical devices; routine repair of electrical systems; gallery drainage; routine mowing, vegetation removal, repair of eroded section, etc. Apart from these routine maintenance activities, no major rehabilitation was carried before the involvement of DRIP. Remote Control for management of gate operations (SCADA) was incorporated in 2001/2002 with conventional micro-processor card system and modernized with PLC and IP based with night vision cameras during 2015/2018.
The rehabilitation works under DRIP include: Package-1
Original Supplementary Revised Costs (INR) Contract Contract Agreement Name of Work Amount Amount amount (in Rs) (in Millions) (in Millions)
Reaming of Porous holes of Drainage Gallery of karanja dam (Rehabilitation and Improvement Works to Karanja Dam under World Bank aided DRIP program. Package-I). 1171500.00 - -
Re-construction of Dry stone Rock Toe and improvement to ‘V’ notch chamber of Karanja dam a)Dry stone rock toa 387157.00 (Rehabilitation and Improvement Works to Karanja Dam Under World Bank aided DRIP program. Package- I)
Reb)V Notch chambert of Karanja Dam (Rehabilitation and Improvement Works to Karanja 310464.00 Dam Under World Bank aided DRIP program. Package- I).
Construction of Rain water drain and Turffing on downstream right and left side of of Karanja dam a) Rain water drain 3105900.00 (Rehabilitation and Improvement Works to Karanja Dam Under World Bank aided DRIP program. Package- I) b) Turfing (Rehabilitation and Improvement Works to Karanja 6502288.00 Dam Under World Bank aided DRIP program. Package- I)
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Providing Security aspects/barbed fencing of Karanja dam (Rehabilitation and Improvement Works to 2181586.00 Karanja Dam Under World Bank aided DRIP program. Package- I) Strengthening and arresting of leakages of Right Bank and Left Bank sluice gates of karanja dam (Rehabilitation and Improvement Works to Karanja 1388392.00 Dam Under World Bank aided DRIP program. Package- I) Improvement to existing road from Main entrance Gate to Stilling Basin of karanja dam (Rehabilitation and Improvement Works to Karanja 934400.00 Dam Under World Bank aided DRIP program. Package- I) Improvement to existing road adjacent to bund on Left side and Right side of downstream of karanja dam. 8898598.00 (Rehabilitation and Improvement Works to Karanja Dam Under World Bank aided DRIP program. Package- I) Strengthening and improvements of gates and other electromechanical components of Karanja dam (Rehabilitation and Improvement Works to Karanja 7516672.00 Dam Under World Bank aided DRIP program. Package- I) TOTAL 32396957.00
Other non-structural measures under DRIP include preparation of inundation maps and Emergency Action Plan (EAP).
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Chapter 7 - Updating the Manual
As features of the dam and appurtenant structures change occasionally, the O&M Manual must be edited and portions rewritten to reflect these changes. This important task is often ignored. Updating information in the O&M Manual should be done whenever major changes like construction of an additional spillway, construction of dam on the upstream etc. take place. Aspects to be considered when updating include:
Increase/decrease in the frequency of an inspection or the maintenance routine based on additional data/ experience acquired. Changes in the operation and/or maintenance procedures based on additional data/experience acquired. Alterations to the project data because of changes/modifications in the dam by way of additional spillway etc.
All up-dates/revisions of the O&M Manual need to be sent to all the locations/addresses to whom the copies of the original O&M Manual had been sent earlier. It is recommended that O&M Manuals be reviewed/ updated after every 10 years by the respective Dam Owners.
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Appendix 1 – Basic Drawings of Karanja Dam
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APPENDIX II― KEY ELEMENTS OF THE EAP A 2.1 KARANJA DAM –WATCH CONDITION NOTIFICATION FLOW CHART
Office of Chief Engineer Office of Superintending Engineer OrganisationKNNL, IPZ, Kalaburgi KNNL, IPC Circle, Kalaburgi Name: Jagannath V. Halinge Name: Jagannath V. Halinge Title: Superintending Engineer Title: Superintending Engineer Mobile Number: 9448135628 Mobile Number: 9448135628 1 Office Number: 08472-256561 Office Number: 08472220342 E-mail: [email protected] 2 E-mail:[email protected]
Name: S H Kattimani Name: Jagnath Raddy Title: Deputy Chief Engineer Title: Technical Assistant to S.E. Mobile Number: 9483451740 Mobile Number: 9481012333 Office Number: 08472220342 Office Number: 08472220342E- E-mail: [email protected] mail:[email protected]
0
Chief Engineer Office of Irrigation North Zone Office of Executive Engineer Karnataka Neeravari Nigam Limited KNNL, KPC Division No-1, Bidar Design Wing Name: Shivkumar M. Swamy Name: Shri Anil Kulkarni Name: N N Prasad Title: Assistant Executive Engineer Title: Executive Engineer to CE Title: Technical Assistant to Mobile Number: 9900537475 Mobile Number: 9480497484 Mobile Number: 9448798060 Office Number: 08482226490 Office Number: 0831-2420108 Office Number: 0831-2420108 E-mail:[email protected] E-mail:[email protected] Email: Name: Anand Kumar Patil Title: Assistant Engineer Office of Karnataka Water Resources Mobile Number: 9448604331 Department (SDSO) E-mail:[email protected]
Name: Anil Kumar Title: Additional Secretary to Govt. & Nodal Officer-DRIP Mobile Number: 9448068249 Office Number: 080-22259985 E-mail: [email protected]
Office of Assistant Executive Engineer
KNNL, KP Dam Sub Division No.3, Halhalli.
Resources Available
Sand and Gravel Supply Heavy Equipment Service Name: Shivkumar M. Swamy Name: Sachin Kollur Name: Gurnath Kollur Title: Assistant Executive Engineer Mobile Mobile Number:8971999999 Mobile Number: 9900537475 Number:9108506300 Office Number: 08482226490 E-mail:[email protected]
Ready Mix Concrete Supply Name: Sachin Kollur Mobile Number:9108506300
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APPENDIX-III KARANJA DAM –FAILURE CONDITION NOTIFICATION FLOW CHART
Office of Assistant Executive Engineer Office of Executive Engineer Resources Available KNNL, KP Dam Sub Division No.3, Halhalli. KNNL, KPC Division No-1, Bidar
Name: Shivkumar M. Swamy Name: Shivkumar M. Swamy Title: Assistant Executive Engineer Title: Assistant Executive Engineer
Mobile Number: 9900537475 Mobile Number: 9900537475 Heavy Equipment Service Office Number: 08482226490 Office Number: 08482226490 Name: Gurnath Kollur E-mail:[email protected] E-mail:[email protected] Mobile Number:8971999999
Name: Anand Kumar Patil Title: Assistant Engineer Sand and Gravel Supply Mobile Number: 9448604331 Name: Sachin Kollur
E-mail:[email protected] Mobile Number:9108506300
Ready Mix Concrete Supply Name: Sachin Kollur Mobile Number:9108506300 Name: Dr M A Jabber Office of the District Collector Superintendent of Police District Fire Officer (Bidar) Office of Superintending Engineer Title: District Health Officer, (Bidar) (Bidar) KNNL, IPC Circle, Kalaburgi Mob: 9448477437 Name.: M D Mujamil
Name: H.R. Mahadev (IAS) Name: Sri Sridar Off No:08482-233126, 233127 Title: D F O Mob: 9986877687 Name: Jagannath V. Halinge Title: District Collector. Title: Superintendent of Dep Mobile no: 9480823689 Title: Superintending Engineer Mob No: 9741969999 Police Off No: 08482-226500 Mobile Number: 9448135628 Mob No: 9480803401 Off No: 08482-225405 Email: [email protected] Office Number: 08472220342 Karnataka state Disaster Off No: 08482 226700 Management Authority
Name: Dr. Office of Chief Engineer Srinivasa Reddy, Office of the District Collector District Health Officer Superintendent of Police Agnishamak Dal (Fire Brigads) KNNL, IPZ, Kalaburgi Title: Director (Latur-Maharastra state) (Latur) (Latur Maharastra state) Officer of the Municipal Name: Jagannath V. Halinge Off No: 080- 67355000
Council Ugir Title: Chief Engineer [email protected] | Name: Sri G. Shrikant (IAS) Name: Dr Gangadhar parge [email protected] Name: Shri Dr.Rajendra Shive Nagar Colony Udgir Mobile Number: 9448135628 Title: District Collector Title: D H O Mane (IPS) Office Number: 08472220342 Name:Dr. C N Prabhu (senior scientific Mob: 9921044466 Mahrastra-413517 Title: superintendent of Mob: 9822502799 officer ) Mob:8762171751 Off No: 02382-243001 Name : Vishal Bhagwat Alte E-mail: [email protected] office Off No:02382-242806 Title: D F O Mob: 9823396195 Mob:7053101101 Off No:02382-243000 Off No:02385-256101 Office of Managing Director, National Disaster Management Karnataka Neeravari Nigam Limited Authority Bangalore Name: Shri A K Sanghi Name: Shri Mallikarjun B Gunge Title: Joint Secretary Title: Manging Director Mitigatiion,IT and comn Mob No: Office Number:011-26701718 Off No:080-22283074-78 Office Number:011-26701864 Email:[email protected] [email protected] Name: Sri Venkatesh Prasad
Office of Karnataka Water Resources Central Water Commission Department (SDSO) Name: Anil Kumar Name: Shri N K Mathur Title: Additional Secretary to Govt. & Title: Chief Engineer (CDSO) Nodal Officer-DRIP Mobile Number: 971733380 Mobile Number: 9448068249 Office Number:011-26106848 Office Number: 080-22259985 [email protected] E-mail: [email protected] Name: Pramod Narayan 159 Name: Bonny Jose Title: Director DRIP,CWC
Emergency Action Plan for Karanja Dam October-2019 Tab 23 A 2.2 Evidence of Distress Genera Specific Emergency Emergency action Equipment, Data to record l observation condition material, and observa level supplies tion Small boils, no increase of Closely check all of downstream toe, None Site and location, water flow, flowing clear especially in the vicinity of boil for approximate flow water. BLUE additional boils, wet spots, sinkholes, or seepage. Closely monitor entire area for changes or flow rate increases. Large or additional boils Initiate 24-hour surveillance. Monitor as Sandbags, filter Site and location, near previously identified described above. Construct sandbag ring cloth approximate flow ones, without increasing dikes around boils, to cover them with flow rate, but carrying BLUE water to retard the movement of soil small amount of soil particles. Filter cloth may be used to retard
Boils Boils particles. soil movement, but do not retard the flow of water. Large or additional boils Continue 24-hour surveillance. Continue Sandbags, pump Site and location, near previously identified monitoring and remedial action as approximate flow ones, increasing flow rate, ORANGE described above. Initiate emergency carrying soil particles. lowering of the reservoir. Issue a warning to downstream residents. Rapidly increasing size of Downstream evacuation. Employ all Dozer, shovels, Site and location, boils and flow increasing RED available equipment to attempt to construct source of earth approximate flow and muddy water. a large ring dike around the boil area. fill Minor seepage of clear Closely check entire embankment for other Wooden stakes, Site, location, water at toe, on slope of seepage areas. Use wooden stakes or flagging approximate flow embankment, or at the BLUE flagging to delineate seepage area. Try to abutments. channel and measure flow. Look for upstream whirlpools.
Seepage Additional seepage areas Initiate 24-hour surveillance. Monitor as Dozer, shovels Site, location, observed flowing clear BLUE described above. Construct measuring weir approximate flow
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Emergency Action Plan for Karanja Dam October-2019 Genera Specific Emergency Emergency action Equipment, Data to record l observation condition material, and observa level supplies tion water and/or increasing and channel all seepage through weir. flow rate. Attempt to determine source of seepage. Seriously or rapidly Continue 24-hour monitoring and remedial Dozer, shovels, Site location, increasing seepage, under- action as described above. Initiate source of fill approximate flow seepage, or drain flow. ORANGE emergency lowering of the reservoir. material Construct a large ring dike around the seepage area. Additional seepage areas Downstream evacuation. Employ all Dozer, shovels, Site location, with rapid increase in flow RED available equipment to attempt to construct source of fill approximate flow and muddy water. a large ring dike around the seepage area. material Skin slide or slough on Examine rest of embankment for other Stakes, tape Distance between slope of embankment. No slides. Place stakes in slide material and measure stakes further movement of slide BLUE adjacent to it for determining if further and embankment crest not movement is taking place. degraded. Slide or erosion involving Initiate 24-hour surveillance. Mobilize all Dozer, shovels, Distance between large mass of material, available resources and equipment for sources of fill stakes crest of embankment is repair operations to increase freeboard and material, BLUE degraded, no movement or to protect the exposed embankment sandbags very slow continuing material. Start filling sandbags and movement. stockpile near slide area. Slide or erosion involving Continue monitoring and remedial actions Dozer, shovels, Distance between large mass of material, as described above. Place additional source of fill stakes crest of embankment is ORANGE material at the toe of the slope to stop the material, pump Slides or severeSlides erosion degraded, progressively slide. increasing in size. Slide or erosion involving Downstream evacuation. Utilize all Dozer, shovels, Distance between large mass of material, available equipment and personnel to sandbags, pump stakes RED crest of embankment is sandbag the degraded slide area to prevent severely degraded, it from overtopping. 161
Emergency Action Plan for Karanja Dam October-2019 Genera Specific Emergency Emergency action Equipment, Data to record l observation condition material, and observa level supplies tion movement of slide is continuing and may reach pool level. Sinkholes any where on Carefully walk the entire embankment and Stakes, flagging Size, location the embankment or within downstream area looking for additional 150 metres downstream BLUE sinkholes, movement, or seepage. from the toe. Sinkholes with Initiate 24-hour surveillance. Monitor as Dozer, shovels, Size, location corresponding seepage above. Construct sandbag dike around the pump anywhere on the BLUE seepage exit point to reduce the flow rate. embankment or Start filling sandbags and stockpile near downstream from the toe. sinkhole. Large sinkholes with Continue monitoring and remedial action Sandbags, dozer, Size, location
Sinkholes corresponding seepage as described above. Utilize sandbags to pump anywhere on the ORANGE increase the freeboard on the dam if embankment or necessary. downstream from the toe. Sinkholes rapidly getting Downstream evacuation. Utilize all Dozer, shovels, Size, location worse, seepage flowing available equipment and personnel to pump muddy water and RED attempt to construct a large ring dike increasing flow. around the area. Obvious settlement of the Look for bulges on slope or changes in None Size, location crest of the embankment, crest alignment. BLUE especially adjacent to concrete structures. Settlement of crest of Initiate 24-hour surveillance. Mobilize all Sandbags, dozer, Size, location
Settlement embankment that is available resources for repair operations to shovels, source BLUE progressing, especially increase freeboard. Fill and stockpile of fill material adjacent to concrete sandbags. Identify any boils near 162
Emergency Action Plan for Karanja Dam October-2019 Genera Specific Emergency Emergency action Equipment, Data to record l observation condition material, and observa level supplies tion structures or if any settlement points for flowing material and corresponding seepage is pursue present. action for boils. Settlement of crest of Continue monitoring and remedial actions Sandbags, Size, location embankment that is rapidly as described above. Use sandbags to shovels, dozer, progressing especially increase the freeboard on the dam if source of fill adjacent to concrete necessary. material ORANGE structures or if any corresponding seepage is flowing muddy water or increasing flow. Progressing settlement that Downstream evacuation. Utilize all Dozer, shovels, Size, location is expected to degrade the available equipment and personnel to build source of fill embankment to reservoir up the crest in the area that is settling. material, RED level. Identify any boils near settlement points sandbags for flowing material and pursue action for boils. Cracks in the embankment Walk on entire crest and slope and check Stakes, tape Size, location crest BLUE for additional cracking. measure or on slopes. Numerous cracks in crest Initiate 24-hour surveillance. Carefully Stakes, tape Size, location that are enlarging, monitor and measure cracking to measure, dozer, especially those determine the speed and extent of the shovels, source perpendicular to the BLUE problem. Mobilize to fill cracks. Cracks of fill material centerline of the dam. parallel to the centerline indicate a slide. Cracking Cracking Follow remedial action for slides. Large cracks in the crest Continue monitoring and remedial action Dozer, shovels, Size, location that are rapidly enlarging, ORANGE as described above. source of fill especially those material 163
Emergency Action Plan for Karanja Dam October-2019 Genera Specific Emergency Emergency action Equipment, Data to record l observation condition material, and observa level supplies tion perpendicular to the centerline of the dam. Cracking that extends to Downstream evacuation. Continue Dozer, shovels, Size, location pool elevation. remedial actions as described above. source of fill RED material
Minor cracking and/or Immediately install measuring device to Crack Monitors, Size, location movement. BLUE monitor movement. stakes, tape measure Significant cracking and/or Initiate 24-hour surveillance. Lower burlap Burlap, rock, Size, location, flow movement. on upstream face of crack to reduce flow dozer, shovels rate of soil particles. Dump large rock on BLUE downstream of moving concrete structure monolith to resist the movement.
structure structure Serious cracking and/or Prepare for evacuation. Continue Dozer, rock, Size, movement, movement ORANGE monitoring and remedial action as burlap, crack flow rate described above. monitors Major cracking and/or Downstream evacuation.Dam failure is Dozer, shovels, Size, location, flow
Cracking or movement of concrete or Cracking movement movement RED imminent. Continue monitoring and rock rate remedial actions as described above. Whirlpool in the lake in the Downstream evacuation. Attempt to plug Dozer, fill Size, location, flow vicinity of the embankment the entrance of the whirlpool with riprap material, rate from the slope of the embankment. Search sandbags, filter RED downstream for an exit point and construct cloth, straw, whirlpool whirlpool Upstream a ring dike to retard the flow of soil rocks particles.
164
Emergency Action Plan for Karanja Dam October-2019 Genera Specific Emergency Emergency action Equipment, Data to record l observation condition material, and observa level supplies tion Structural member of a Initiate 24-hour surveillance. Immediately Crane and Type of problem, gate or gate operator place stop logs in front of gate and initiate welder location broken or severely necessary actions to get gate repaired. ORANGE damaged so as to prevent of gate of gate operation Malfunction Malfunction of the gate Lake level rising and rain Initiate 24-hour surveillance of lake level Lake level, rainfall continuing and rainfall. BLUE
lake lake Generate inflow forecasts every 12 hours. rising rising Rapidly Rapidly Water flowing over the Prepare for evacuation. Continue Dozer, fill Lake level, rainfa dam and lake continuing to monitoring. material, rise.No significant erosion Generate inflow forecasts every 3 hours. sandbags, filter ORANGE of downstream cloth, rocks embankment.
Water flowing over the Immediate evacuation. Dam failure is Cameras. Status of breach dam, the lake continuing to imminent or ongoing. formation. Width of rise, and significant breach as it erosion of downstream enlarges.
Overtopping Overtopping embankment with development of head-cuts RED encroaching on the dam crest, or significant movement of sections of concrete or masonry portions of the dam.
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Emergency Action Plan for Karanja Dam October-2019
A 2.3 Roles and Responsibilities of Dam Authorities during Emergency
Responsibilities of Dam Executive Engineer
Responsible for initiating implementation of the EAP. Collecting weather forecasts and the inflow forecasts and alerting of any potential emergency situation. Conducting routine dam maintenance, such as annual weed control, conducting dam integrity inspections, and notifying Karnataka Water Resources Department of any potential emergency situations. Contacting emergency personnel should a dam failure be imminent.
Responsibilities of Dam Superintending Engineer
Responsible for updating the EAP. An annual EAP review will be conducted to ensure that contact names and numbers are current on the Notification Flowcharts.
Responsibilities of Dam Chief Engineer Responsible for directing specific, incident appropriate actions du ring an emergency, such as opening or closing water outlets and remedial construction activities such a s earth moving, etc. Specific scenarios are not listed in this EAP. For inspecting the dam in a potential emergency such as the potential there at of high waters or a tropical cyclone. Th e Chief Engineer will contact the Hassan District Police and District Deputy Commissioner. If warranted, the Chief Engineer will notify the Stat e and District Disaster Management Authorities. The Hassan District Police will notify downstream residents. The Hassan district deputy commissioner will implement the Notification Flow chart for regional and state disaster management contacts. In the event of a failure condition, the Chief Engineer will activate the Emergency Operations Center to serve as the main distribution center for warning and evacuation activities. The Emergency Operations Center will be established at the Office of Karnataka Water Resources Department. The Chief Engineer will be responsible for initiating actions from this location. A 2.4 Sample Public Announcements
Note: These messages are communicated to downstream residents to alert the public of impending danger. The Karnataka Water Resources Department should coordinate with the India Meteorological Department, the Hassan Disaster Management Authority and the District Magistrate Hassan & Mandya Districts prior to release. Messages ca n be communicated via radio, television , bulk SMSs of local mobile networks, and other media outlets.
166 Emergency Action Plan for Karanja Dam October-2019
Announcement for a Slowly Developing “Watch” Condition (BLUE Emergency Level) Karna taka Water Resources Department has declared a B LUE Leve l “Watch” condition for Karanja Dam, Project Identification Code KA06HH0181 as of [time and date]. [Briefly describe the problem or condition.] Although here is no immediate danger of the dam failing, [Describe what actions are being taken to monitor and control the situation.] [State the quantity of any releases from the reservoir.] Announcement for a Worsening “Watch” Condition (BLUE Emergency Level) Karnataka Water Resources Department has declared a BLUE Level “Watch” condition for Karanja Dam, Project Identification Code KA06HH0181 as of [time and date]. [Briefly describe the problem or condition.] Al though there is no immediate dan ger of the d am failing a possibility now exist s that the da m will fail if correction efforts are unsuccessful. [Describe what actions are being taken to monitor and correct the situation.] [State the quantity of any releases from the reservoir]. Additional news will be made available as soon as it is received. Announcement for a Probable “Failure” Condition (ORANGE Emergency Level) Urgent! This is an emergency message. Karnataka Water Resources Department has announced that Karanja Dam, Project Identification Code KA06HH0181 is probably going to fail. [Describe what actions are being taken to monitor and control the situation.] It is possible that the dam will fail in [##] hours. Residents of villages in nearby low-lying areas along the Hemavathy River, as well as the town of Holenarasipur, should prepare for immediate vacuation. Additional news will be made av ail able as soon as it is received. Announcement of an Impending “Failure” Condition (RED Emergency Level) Emergency! This is an emergency message. Karanja Dam, Project Identification Code KA06HH0181 is going to fail at any moment. Residents who have not yet done so should immediately evacuate the t own of Holenarasipur and low-lying village areas along the Hemavathy River. The flood waters have already reached [Highway] and [Road]. Additional news will be made available as soon as it is received. Announcement of an Ongoing “Failure” Condition (RED Emergency Level) Emergency! This is an emergency message. Karanja Dam, Project Identification Code KA06HH0181 failed at [time and date]. Residents who have not yet done so should immediately evacuate the town of Holenarasipur and low -lying village are as along the Hemavathy River. The flood waters have already reached [High way] and [Road]. Additional news will be made available as soon a s it is received.
167 Emergency Action Plan for Karanja Dam October-2019 APPENDIX III ― MATERIAL REQUIRED FOR MAINTENANCE DURING MONSOON
Materials during monsoon period should be stocked in adequate quantity as experience shows them to be necessary. Particular care should be taken that the required materials are distributed with careful fore- thought so as to be readily available everywhere, particularly at dangerous sites. The quantity of materials required depends on importance or dangerousness of the dam and the distances of the dam from the nearest stations at which these can be purchased. This will need to be worked out by the respective dam owners / state govt. as per their experience & documented in the O & M Manual for the dams. The following norms have been prescribedby the Govt. of Madhya Pradesh for their projects during monsoon period.
1. Patrolling i. Torches: 1 for each Executive Engineer, Assistant Engineer, Sub-Engineer and 2 in spare. ii. Cells: 1fil land 2 sparesets iii. Binoculars 2 iv. Night Vision Goggles 2 v. Dragon Lights 10 vi. Search Lights 15 vii. Communication Systems (local walkie-talkie) 8 viii. Rain coat: 20 ix. Gum boots: 20 x. Danger Zone Light: Strips 10 xi. Flares 5
2. Leaks i Gunny Bags 500 ii. Stakes 60 to 120 stakes per km. iii. Baskets 1 Basket of toot per beldar &one spare. iv. Sutli (Twine) 0.5kg per 100bags v. Needles ½ dozen with each work mestry vi. Sand Collectionof2to4m3everykm
APPENDIX IV ― SCHEDULED OR UNSCHEDULED DAM SAFETY INSPECTION FORM
A form designed for use during schedule dam safety inspections – which includes pre- and post-monsoon inspections – follows. The form contains a comprehensive checklist (Part 2a) of items that are found at dams that need to be evaluated during a safety inspection. The checklist consists of (1) a series of questions that need to be answered as Yes/No/Not Applicable for each inspection item, (2) a remarks box in which critical aspects can be commented upon following each question, and (3) a final condition assessment (Unsatisfactory/Poor/Fair/Satisfactory) for that inspection item. Not all inspection items will be found at a dam. The form concludes with a Consolidated Dam Health Status Report (Part 2b)
168 Emergency Action Plan for Karanja Dam October-2019 SCHEDULED / UNSCHEDULED DAM SAFETY INSPECTION FORM
Part 1a - Inspection Details:
Dam Name: Project ID Code (PIC): Dam Type: Dam Purpose: Dam Owner: Hazard Classification: Dam Operator: Inspection by: City/State/PIN: Date of Inspection: District: Reservoir Level: Latitude: Auxiliary Spillway Level: Longitude: Weather Conditions:
Part 1b - Inspection Remarks:
Please provide any additional information or comments not covered by Part 1a form above.
169 Emergency Action Plan for Karanja Dam October-2019
Part 2a - Inspection Checklist:
SN Inspection Item Responsea Remarks Conditionb
Y N NA A Reservoir Fair/Satisfactory Unsatisfactory/Poor/ A1.1 General Condition Is the reservoir water level unusually high 1.1.1 or low? 1.1.2 Are there signs of decline in water quality? Are there signs of recent sediment 1.1.3 deposition? 1.1.4 Is floating debris present? Are there people or livestock in and around 1.1.5 reservoir? 1.1.6 Any other issues?
B Dam and Dam Reach (Embankment) B1.1 General Condition Any major alterations or changes to the dam 1.1.1 since the last inspection? Is there any new nearby development in the 1.1.2 downstream floodplain? Any misalignment of poles, fencing or 1.1.3 walls due to dam movement?
B1.2 Upstream Slope
170 Emergency Action Plan for Karanja Dam October-2019
SN Inspection Item Responsea Remarks Conditionb
Any signs of bulging or concavity 1.2.1 (depressions)? 1.2.2 Presence of longitudinal or transverse cracks?
1.2.3 Any signs of distress to the stability of slopes? Any other signs of structural distress or 1.2.4 instability? Trees or profuse growth of weeds/bushes at any 1.2.5 location? Is there evidence of livestock on the upstream 1.2.6 slope? Are ants, termites, crabs or other burrowing 1.2.7 animals present? 1.2.8 Any degradation to slope protection (rip-rap)?
1.2.9 Any other issues?
B1.3 Crest of Dam
1.3.1 Any signs of excessive or uneven settlement?
1.3.2 Presence of longitudinal or transverse cracks? Presence of undulations, local depressions or 1.3.3 heaving? Any degradation to access road 1.3.4 (sealed/unsealed)?
1.3.5 Evidence of livestock on dam crest?
171 Emergency Action Plan for Karanja Dam October-2019
SN Inspection Item Responsea Remarks Conditionb
Trees or profuse growth of weeds/bushes at any 1.3.6 location? Any degradation to edges of dam crest or 1.3.7 reduction in width? Any degradation to upstream parapet or 1.3.8 downstream curb wall? 1.3.9 Any other issues?
B1.4 Downstream Slope Any signs of bulging or concavity 1.4.1 (depressions)? Any wet patches (seepage), concentrated leaks 1.4.2 or evidence of boiling? 1.4.3 Presence of longitudinal or transverse cracks?
1.4.4 Any signs of distress to the stability of slopes? Are of rain cuts/erosion channels present at any 1.4.5 location? Any other signs of structural distress or 1.4.6 instability? Trees or profuse growth of weeds/bushes at any 1.4.7 location? Is there evidence of livestock on the 1.4.8 downstream slope?
Are ants, termites, crabs or other burrowing 1.4.9 animals present? Any other degradation to slope protection 1.4.10 (turfing)?
172 Emergency Action Plan for Karanja Dam October-2019
SN Inspection Item Responsea Remarks Conditionb
1.4.11 Any other issues?
B1.5 Breaching Section Any difficulties in accessing the breaching 1.5.1 section? 1.5.2 Evidence of recent degradation?
1.5.3 Any other issues?
B1.6 Junction with Masonry/Concrete Dam Section Any presence of leaks, springs or wet spots in 1.6.1 the vicinity of the junction? Any presence of cracking, settlement or 1.6.2 upheaval of earthwork? 1.6.3 Any evidence of erosion or slope instability?
1.6.4 Any other issues?
B1.7 Abutment Contacts Any presence of leaks, springs or wet spots in 1.7.1 the vicinity of the abutment? Any presence of cracking, settlement or 1.7.2 upheaval of earthwork? 1.7.3 Any evidence of erosion or slope instability?
1.7.4 Trees or profuse growth of weeds/bushes? Any degradation to up/downstream slope 1.7.5 protection (rip-rap, turfing)?
173 Emergency Action Plan for Karanja Dam October-2019
SN Inspection Item Responsea Remarks Conditionb
1.7.6 Any other issues?
B2 Dam and Dam Block/Reach (Concrete/Masonry) B2.1 General Condition Any major alterations or changes to the dam 2.1.1 since the last inspection? Is there any new nearby development in the 2.1.2 downstream floodplain? Any misalignment of poles, fencing or walls 2.1.3 due to dam movement?
B2.2 Upstream Face Evidence of surface defects (honeycombing, 2.2.1 staining, stratification)? Concrete/masonry deterioration (spalling, 2.2.2 leaching, disintegration)?
Is cracking present (structural, thermal, along 2.2.3 joints)? Evidence of differential settlement 2.2.4 (displaced/offset/open joints)? Presence of vegetation (growth in joints 2.2.5 between blocks)? Evidence of any other damage to joints and/or 2.2.6 waterstops? 2.2.7 Any other issues?
B2.3 Crest of Dam Evidence of differential settlement 2.3.1 (displaced/offset/open joints)?
174 Emergency Action Plan for Karanja Dam October-2019
SN Inspection Item Responsea Remarks Conditionb
Presence of cracking (structural, thermal, along 2.3.2 joints)? Profuse growth of weeds/grass/plants at any 2.3.3 location? 2.3.4 Any degradation to access road? Any degradation to upstream parapet or 2.3.5 downstream curb wall? 2.3.6 Any other issues?
B2.4 Downstream Face Evidence of surface defects (honey-combing, 2.4.1 staining, stratification)? Concrete/masonry deterioration (spalling, 2.4.2 leaching, disintegration)? Presence of cracking (structural, thermal, along 2.4.3 joints)? Evidence of differential settlement 2.4.4 (displaced/offset/open joints)? Presence of vegetation (growth in joints 2.4.5 between blocks)? Evidence of any other damage to joints and/or 2.4.6 waterstops? Excessive seepage/sweating at any location on 2.4.7 downstream face? Significant leakage at any location on 2.4.8 downstream face? 2.4.9 Any other issues?
175 Emergency Action Plan for Karanja Dam October-2019
SN Inspection Item Responsea Remarks Conditionb
B2.5 Abutment Contacts Any presence of leaks, springs or wet spots in 2.5.1 vicinity of abutment? 2.5.2 Any presence of cracking or settlement? Profuse growth of weeds/grass/plants at any 2.5.3 location? 2.5.4 Any other issues?
C1 Gallery/Shaft and Drainage (Embankment) C1.1 General Condition Slushy condition or water logging immediately 1.1.1 downstream of dam? 1.1.2 Any evidence of boiling in vicinity of dam toe?
C1.2 Gallery/Shaft Condition Any problems accessing or inspecting 1.2.1 gallery/shaft (obstruction)? Any safety issues (inadequate handrails, 1.2.2 lighting or ventilation)? Problems of inadequate drainage (slippery 1.2.3 stairs, water logging of gallery)? Evidence of differential settlement 1.2.4 (displaced/offset/open joints)? Excessive seepage/sweating at any location 1.2.5 along gallery/shaft? Significant leakage at any location along 1.2.6 gallery/shaft?
176 Emergency Action Plan for Karanja Dam October-2019
SN Inspection Item Responsea Remarks Conditionb
1.2.7 Any other issues?
C1.3 Drain Condition
1.3.1 Is the flow in the drain unusually high or low? Any reduction/deterioration in the drain section 1.3.2 or slope? Presence of debris or profuse growth of 1.3.3 weeds/bushes at any location? 1.3.4 Any other obstruction to the flow of the drain? Is the flow in the drain noticeably 1.3.5 sporadic/irregular? Does the drainage water have high turbidity 1.3.6 (high sediment load)? 1.3.7 Any other issues?
C2 Gallery/Shaft and Drainage (Concrete/Masonry) C2.1 General Condition Slushy condition or water logging just 2.1.1 downstream of dam?
C2.2 Gallery/Shaft Condition Any problems accessing or inspecting 2.2.1 gallery/shaft (obstruction)? Any safety issues (inadequate handrails, 2.2.2 lighting or ventilation)? Problems of inadequate drainage (slippery 2.2.3 stairs, water logging of gallery)?
177 Emergency Action Plan for Karanja Dam October-2019
SN Inspection Item Responsea Remarks Conditionb
Evidence of surface defects (honeycombing, 2.2.4 staining, stratification)? Concrete/masonry deterioration (spalling, 2.2.5 leaching, disintegration)? Presence of cracking (structural, thermal, along 2.2.6 joints)? Evidence of differential settlement 2.2.7 (displaced/offset/open joints)? Evidence of any other damage to joints and/or 2.2.8 waterstops? Excessive seepage/sweating at any location 2.2.9 along gallery/shaft? Significant leakage at any location along 2.2.10 gallery/shaft? 2.2.11 Any other issues?
C2.3 Drain Condition
2.3.1 Is the flow in the drain unusually high or low?
2.3.2 Presence of calcium or other deposits in drain? Any other evidence of the drain being 2.3.3 blocked/having reduced section? Is the flow in the drain noticeably 2.3.4 sporadic/irregular? Does the drainage water have unusual color 2.3.5 (leachate)?
2.3.6 Any other issues?
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SN Inspection Item Responsea Remarks Conditionb
D1 Spillway and Energy Dissipation Structure 1.1 Spillway Any problems inspecting spillway (obstructed 1.1.1 access, damaged catwalk)? Any obstructions in or immediately 1.1.2 downstream of the spillway? Evidence of abrasion, cavitation or scour on 1.1.3 glacis (e.g. exposed reinforcement)? 1.1.4 Presence of displaced, offset or open joints? Presence of cracking (structural, thermal, along 1.1.5 joints)? Evidence of surface defects (honeycombing, 1.1.6 staining, stratification)? Concrete/masonry deterioration (spalling, 1.1.7 leaching, disintegration)? Presence of vegetation (growth in joints 1.1.8 between blocks)? Evidence of any other damage to joints and/or 1.1.9 water stops? Excessive seepage/sweating at any location on 1.1.10 spillway glacis?
Significant leakage at any location on spillway 1.1.11 glacis? 1.1.12 Any other issues?
D1.2 Energy Dissipation Structure Any problems inspecting energy dissipation 1.2.1 structure?
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SN Inspection Item Responsea Remarks Conditionb
Any obstructions in or immediately 1.2.2 downstream of dissipation structure? Evidence of abrasion, cavitation or scour on 1.2.3 dissipation structure? 1.2.4 Presence of displaced, offset or open joints? Presence of cracking (structural, thermal, along 1.2.5 joints)? Evidence of surface defects (honeycombing, 1.2.6 staining, stratification)? Concrete/masonry deterioration (spalling, 1.2.7 leaching, disintegration)? Presence of vegetation (growth in joints 1.2.8 between blocks)? Evidence of any other damage to joints and/or 1.2.9 waterstops? Any problems with under-drainage (blockage 1.2.10 of open drain holes)? 1.2.11 Any other issues?
E1 Intake/Outlet and Water Conveyance Structure E1.1 Intake/Outlet Structure Any problems inspecting intake/outlet structure 1.1.1 (obstructed/unsafe access)? Any obstructions in, upstream or downstream of 1.1.2 intake/outlet structure? Evidence of abrasion, cavitation or scour on 1.1.3 intake/outlet structure?
180 Emergency Action Plan for Karanja Dam October-2019
SN Inspection Item Responsea Remarks Conditionb
Any evidence of structural distress 1.1.4 (displaced/offset/open joints, cracking)? Any evidence of surface defects and/or 1.1.5 concrete/masonry deterioration? 1.1.6 Any other issues?
E1.2 Water Conveyance Structure Any problems inspecting intake/outlet structure 1.2.1 (obstructed/unsafe access)? Any obstructions in, upstream or downstream of 1.2.2 water conveyance structure? Evidence of abrasion, cavitation or scour on 1.2.3 structure?
Any evidence of structural distress 1.2.4 (displaced/offset/open joints, cracking)? Any evidence of surface defects and/or material 1.2.5 deterioration? Any evidence of seepage or leakage from water 1.2.6 conveyance structure? 1.2.7 Any other issues?
F1 Hydro-Mechanical Component and Turbine/Pump F1.1 Gates, Stop Logs and Bulk Heads Any problems inspecting gate/stop log/bulk 1.1.1 head (obstructed/unsafe access)? Any issues with storage of equipment 1.1.2 (emergency stop logs, and gate leaves)? Missing or inadequate spare parts (particularly 1.1.3 requiring regular replacement)?
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SN Inspection Item Responsea Remarks Conditionb
Any deterioration of equipment (connecting 1.1.4 bolts, welds, surface, paint work?) Any obstructions preventing or impairing 1.1.5 smooth operation? Any problems with the rollers (not touching 1.1.6 tracks, inadequate lubrication)? Any problems with the seals (damage, 1.1.7 weathering, gaps with bearing surface)? 1.1.8 Any other issues?
F1.2 Hoists, Cranes and Operating Mechanisms Any problems inspecting hoist/crane/operating 1.2.1 mechanism? Missing or inadequate spare parts (particularly 1.2.2 requiring regular replacement)? Any deterioration of equipment (connecting 1.2.3 bolts, welds, surface, paint work?) Any wear or damage to wire cables and other 1.2.4 moving parts? Any obstructions preventing or impairing 1.2.5 smooth operation? Missing or inadequate provision of back- 1.2.6 up/standby power supply? Any health and safety concerns (e.g. lack of 1.2.7 "danger" sign during maintenance)? 1.2.8 Any other issues?
F1.3 Valves
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SN Inspection Item Responsea Remarks Conditionb
1.3.1 Any problems inspecting valve? Any obstructions preventing or impairing 1.3.2 smooth operation? Any deterioration of valve and associated 1.3.3 equipment? 1.3.4 Any other issues?
F1.4 Trash Racks
1.4.1 Any problems inspecting trash rack? Problems of excessive debris and/or inadequate 1.4.2 cleaning? Any deterioration of trash rack (rust, corrosion, 1.4.3 and damaged blades)? 1.4.4 Any other issues?
F1.5 Trash Rack Cleaning Machines Any problems inspecting trash rack cleaning 1.5.1 machine? Missing or inadequate spare parts (particularly 1.5.2 requiring regular replacement)? Any deterioration of equipment (connecting 1.5.3 bolts, welds, surface, paint work?)
Any wear or damage to wire cables and other 1.5.4 moving parts? Any obstructions preventing or impairing 1.5.5 smooth operation?
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SN Inspection Item Responsea Remarks Conditionb
Missing or inadequate provision of back- 1.5.6 up/standby power supply? Any health and safety concerns (e.g. lack of 1.5.7 "danger" sign during maintenance)? 1.5.8 Any other issues?
F1.6 Turbines
1.6.1 Any problems inspecting turbine? Any obstructions preventing or impairing 1.6.2 smooth operation? Any deterioration of turbine, blades and 1.6.3 associated equipment? 1.6.4 Any other issues?
F1.7 Pumps
1.7.1 Any problems inspecting pump? Any obstructions preventing or impairing 1.7.2 smooth operation?
Any deterioration of pump and associated 1.7.3 equipment? 1.7.4 Any other issues?
G1 Access Road G1.1 General Condition Any problems ensuring security of dam site 1.1.1 (including gates and fencing)?
184 Emergency Action Plan for Karanja Dam October-2019
SN Inspection Item Responsea Remarks Conditionb
Any obstructions along or at entrance to access 1.1.2 road (temporary or long-term)? Any slope stability issues (road embankment or 1.1.3 adjacent slopes)? Profuse growth of weeds/grass on or in vicinity 1.1.4 of access road? Any drainage problems (standing water on or 1.1.5 adjacent to road)? Any other degradation to road surface (ruts, 1.1.6 potholes, cavities, cracking)? 1.1.7 Any other issues?
H1 Instrumentation H1.1 General Condition Any problems inspecting instrument 1.1.1 (obstructed/unsafe access)? Is the instrument vulnerable to damage or theft 1.1.2 (inadequate protection)? Any problems ensuring correct functioning of 1.1.3 instrument (lighting, ventilation)? Any evidence of degradation to condition of 1.1.4 instrument (rusting, vandalism)? Any evidence of instrument not working 1.1.5 (decommissioned, broken)? 1.1.6 Any other issues?
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SN Inspection Item Responsea Remarks Conditionb
I1 Other Appurtenant Structures (Flexi-Component) I1.1 Bridges and Catwalks Any problems inspecting bridge or catwalk 1.1.1 (obstructed/unsafe access)? Any security issues relating to unauthorized 1.1.2 access (e.g. for gate operation)? Are the decking, girders and supports 1.1.3 structurally sound? Any evidence of defects or deterioration of 1.1.4 steel, concrete or paint work? 1.1.5 Any other issues?
I1.2 Guide Walls Any problems inspecting guide wall 1.2.1 (obstructed/unsafe access)? Any problem with drainage from behind wall 1.2.2 (e.g. blocked weep holes)? Any evidence of scour, foundation erosion or 1.2.3 undercutting? Any signs of differential settlement, cracking or 1.2.4 tilting? 1.2.5 Any other issues?
I1.3 Miscellaneous
1.3.1 Any other issues? (please specify part)
J1 Emergency Preparedness
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SN Inspection Item Responsea Remarks Conditionb
J1.1 Emergency Action Plan Is the Emergency Action Plan (EAP) still 1.1.1 pending, inadequate or outdated? If not, are any dam staff unaware or 1.1.2 insufficiently conversant with the EAP?
Any concerned authorities unaware or 1.1.3 insufficiently conversant with the EAP? Do the communication directories/contact 1.1.4 details require updating? Any problems accessing or operating the 1.1.5 communication/warning system? 1.1.6 Any other issues?
aRespond either yes (Y), no (N) or not applicable (NA). bCondition: Please rate the condition as either Satisfactory, Fair, Poor or Unsatisfactory as described below: 1. Satisfactory - No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the applicable regulatory criteria or tolerable risk guidelines. 2. Fair - No existing dam safety deficiencies are recognized for normal loading conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. 3. Poor - A dam safety deficiency is recognized for loading conditions which may realistically occur. Remedial action is necessary. Poor may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Further investigations and studies are necessary. 4. Unsatisfactory - A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
187 Emergency Action Plan for Karanja Dam October-2019 Part 2b – Consolidated Dam Health Status Report:
Observations/Significant SN Remedial Measures Suggested Categorya Deficiencies Noticed 1
2
3
4 aCategory I – deficiencies which may lead to failure; Category II – major deficiencies requiring prompt remedial measures; Category III – minor remedial measures which are rectifiable during the year
188 Emergency Action Plan for Karanja Dam October-2019 Appendix V - Glossary Dam – any artificial barrier including appurtenant downstream toe, drainage galleries, operation of works constructed across rivers or tributaries mechanical systems (including gates and its thereof with a view to impound or divert water; components, drive units, cranes), interior of outlet includes barrage, weir and similar water conduits, instrumentation records, and record- impounding structures but does not include water keeping arrangements. conveyance structures such as canal, aqueduct and navigation channel and flow regulation structures Dam owner – the Central Government or a State such as flood embankments, dikes, and guide Government or public sector undertaking or local bunds. authority or company and any or all of such persons or organizations, who own, control, operate or Dam failure – failures in the structures or maintain a specified dam. operation of a dam which may lead to the uncontrolled release of impounded water resulting Dam safety – the practice of ensuring the integrity and viability of dams such that they do not present in downstream flooding affecting the life and unacceptable risks to the public, property, and the property of the people. environment. It requires the collective application of engineering principles and experience, and a Dam incident – all problems occurring to a dam philosophy of risk management that recognizes that that has not degraded into ‘dam failure’ and a dam is a structure whose safe function is not including the following: explicitly determined by its original design and construction. It also includes all actions taken to a) Structural damage to the dam and appurtenant identify or predict deficiencies and consequences works; related to failure, and to document, publicize, and b) Unusual readings of instruments in the dam; reduce, eliminate, or remediate to the extent c) Unusual seepage or leakage through the dam reasonably possible, any unacceptable risks. body; d) Change in the seepage or leakage regime; Decommission― Taking a dam out of service in e) Boiling or artesian conditions noticed below an environmentally sound and safe manner or an earth dam; converting it to another purpose. f) Stoppage or reduction in seepage or leakage Design life― the intended period that the dam will from the foundation or body of the dam into function successfully with only routine any of the galleries, for dams with such maintenance; determined during design phase. galleries; Distress condition – the occurrence or potential g) Malfunctioning or inappropriate operation of development of such conditions in the dam or gates; appurtenance or its reservoir or reservoir rim, h) Occurrence of any flood, the peak of which which if left unattended to, may impede the safe exceeds the available flood discharge capacity operation of dam for its intended benefits or may or 70% of the approved design flood; pose unacceptable risks to the life and property of i) Occurrence of a flood, which resulted in people downstream. encroachment on the available freeboard, or the adopted design freeboard; Documentation – all permanent records j) Erosion in the near vicinity, up to five hundred concerning investigation, design, construction, meters, downstream of the spillway, waste operation, performance, maintenance and safety of weir, etc.; and dams and includes design memorandum, k) Any other event that prudence suggests would construction drawings, geological reports, reports have a significant unfavorable impact on dam of specialized studies simulating structural and safety. hydraulic response of the dam, changes made in design and drawings, quality control records, Dam inspection – on-site visual examination of all emergency action plan, operation and maintenance components of dam and its appurtenances by one manual, instrumentation readings, inspection and or more persons trained in this respect and includes testing reports, operational reports, and dam safety investigation of the non-overflow portion, review reports; spillways, abutments, stilling basin, piers, bridge, 189 Emergency Action Plan for Karanja Dam October-2019 Emergency Action Plan (EAP)― a plan of action Appurtenant Structures―ancillary features of a to be taken to reduce the potential for damage to dam, such as the outlet, spillway, energy property and loss of life in the area affected by dissipation arrangement powerhouse, tunnels, etc. failure of a dam or other potentially hazardous Arch Dam―a concrete or masonry dam that is practice. curved to transmit the major part of the water Hazard Classification― a system that categorizes pressure to the abutments. dams according to the degree of adverse Backwater Curve―the longitudinal profile of the incremental consequences of a failure or improper water surface in an open channel where the depth operation of the dam. CWC classifies dam hazards of flow has been increased by an obstruction, an as “low”, “significant”, or “high”. increase in channel roughness, a decrease in Maintenance― the recurring activities necessary channel width, or a flattening of the bed slope. to retain or restore a dam in a safe and functioning Base Width (Base Thickness) ―the maximum condition, including the management of vegetation, width or thickness of a dam measured horizontally the repair or replacement of failed components, the between upstream and downstream faces and prevention or treatment of deterioration, and the normal (perpendicular) to the axis of the dam but repair of damages caused by flooding or vandalism. excluding projections for outlets, etc. Operation― the administration, management, and Berm―a horizontal step or bench in the sloping performance of maintenance activities necessary to profile of an embankment dam. keep a dam safe and functioning as planned. Upstream Blanket―an impervious layer placed Program ― any authorized activity used to on the reservoir floor upstream of a dam. In case of implement and carry out goals, actions, and an embankment dam, the blanket may be connected objectives contained within the authorizing to the impermeable element in a dam. legislation. Buttress dam―a dam consisting of a watertight Program Life― the period in a contract, upstream face supported at intervals on the conservation plan, or plan during which the downstream side by a series of buttresses. conservation practice or conservation system shall be maintained and used for the intended purpose; Cofferdam―a temporary structure enclosing all or determined by program requirements. part of a construction area so that construction can proceed in a dry area. Rehabilitation― the completion of all work necessary to extend the service life of the practice Concrete Lift―in concrete works the vertical or component and meet applicable safety and distance between successive horizontal performance standards. construction joints. Repair― actions to restore deteriorated, damaged, Conduit Outlet Works―a closed conduit for or failed damor its component to an acceptable by conveying discharge through or under a dam for meeting functional condition. different project purposes. Replacement― the removal of a structure or Consolidation Grouting (Blanket Grouting) component and installation of a similar, functional ―the injection of grout to consolidate a layer of the structure or component. foundation, resulting in greater impermeability, strength, or both. Service Life― the actual period after construction of a dam, during which the practice functions Construction Joint―the interface between two adequately and safely with only routine successive placings or pours of concrete where a maintenance; determined by on-site review. bond, not permanent separation, is intended. Abutment―that part of a valley side against which Core Wall―a wall built of impervious material, a dam is constructed. Right and left abutments are usually concrete or asphaltic concrete, in the body those on respective sides of the of an observer of an embankment dam to prevent leakage. looking downstream. Crest Length―the length of the dam at its crest Air-Vent Pipe―a pipe designed to provide air to (dam top) top of a dam, including the length of the the outlet conduit to reduce turbulence during spillway, powerhouse, navigation lock, fish pass, release of water and safeguard against damages due etc., where these structures form part of the length to cavitation.
190 Emergency Action Plan for Karanja Dam October-2019 of a dam. If detached from a dam, these structures Relief well―vertical wells or boreholes, should not be included. constructed downstream of an embankment dam to relieve the pressure from confined pervious layers Crest of dam―Used to indicate the “top of dam”. in foundation overlaid by an impervious layer to To avoid confusion to indicate the crest of spillway arrest boiling. and top of dam may be used. Drawdown―the lowering of water surface level Culvert―a drain or waterway built under a road, due to release of water from a reservoir. railway, or embankment, usually consisting of a pipe or covered conduits Earthen dam or earth filleddam―see embankment dam. Cutoff―an impervious construction or material which reduces seepage through the foundation Embankment dam (Fill dam) ― any dam material. constructed of excavated natural materials. Cutoff trench―an excavation later to be filled Earth dam (Earth fill dam)―An embankment with impervious material to form a cutoff. dam in which more than 50 percent of the total volume is formed of compacted fine-grained Cutoff wall―a wall of impervious material (e.g., material obtained from a borrow area. concrete, asphaltic concrete, steel-sheet piling) built into the foundation to reduce seepage under Homogeneous earth fill dam― an embankment the dam. dam constructed of similar earth material throughout, except internal drains or drainage Dead storage―the storage that lies below the blankets; distinguished from a zoned earth fill dam. invert of the lowest outlet and that, therefore, cannot be withdrawn from the reservoir. Hydraulic fill dam―an embankment dam constructed of materials, often dredged, that are Design flood―see spillway design flood. conveyed and placed by suspension in flowing Diaphragm―see membrane. water. Dike (Levee)―a long low embankment whose Rock fill dam―an embankment dam in which height is usually less than 5 m and whose length is more than 50 percent of the total volume comprises more than 10 times the maximum height. Usually compacted or dumped pervious natural or crushed applied to embankments or structures built to rock. protect land from flooding. If built of concrete or Rolled fill dam―an embankment dam of earth or masonry, the structure is usually referred to as a rock in which the material is placed in layers and flood wall. Also, used to describe embankments compacted using rollers or rolling equipment. that block areas on a reservoir rim that are lower than the top of the main dam and that are quite long. Zoned embankment dam―an embankment dam In the Mississippi River basin, where the old composed of zones of materials selected for French word levee has survived, the term now different degrees of porosity, permeability and applies to flood-protecting embankments whose density. height can average up to 15 m. Emergency spillway―see spillway. Diversion channel, canal, or tunnel―a waterway Face―the external surface of a structure, e.g., the used to divert water from its natural course. These surface of a wall of a dam. terms are generally applied to temporary structures such as those designed to bypass water around a Failure―the uncontrolled release of water from a dam site during construction. “Channel’ is dam. normally used instead of “canal” when the Filter (filter zone) ―A band or zone of granular waterway is short. Occasionally these terms are material that is incorporated into a dam and is applied to permanent structures. graded (either naturally or by selection) to allow Drainage area―an area that drains naturally to a seepage to flow across or down the filter without point on a river. causing the migration of material from zones adjacent to it. Drainage layer or blanket―a layer of permeable material in a dam to relieve pore pressure or to Flashboards―a length of timber, concrete, or steel facilitate drainage of fill. placed on the crest of a spillway to raise the retention water level but that may be quickly removed in the event of a flood, either by a tripping
191 Emergency Action Plan for Karanja Dam October-2019 device or by deliberately designed failure of the Crest gate (spillway gate) ―a gate on the crest of flashboard or its supports. a spillway to control overflow or reservoir water level. Floodplain―an area adjoining a body of water or natural stream that has been, or may be, covered by Emergency gate―a standby or reserve gate which flood water. is lowers only for repairing / servicing of the service gate. Floodplain management―a management program to reduce the consequences of flooding, Fixed wheel gate (fixed-roller gate, fixed-axle either by natural runoff or by dam failure, to gate) ―a gate having wheels or rollers mounted on existing and future properties in a floodplain. the end posts of the gate. The wheels move against rails fixed in side grooves or gate guides. Flood routing―the determination of the attenuating effect of storage on a flood passing Flap gate―a gate hinged along one edge, usually through a valley, channel, or reservoir. either the top or bottom edge. Examples of bottom- hinged flap gates are tilting gates and belly gates, Flood surcharge―the volume or space in a so called due to their shape in cross-section. reservoir between the controlled retention water level (Full Reservoir Level) and the maximum Flood gate―a gate to control flood release from a water level. Flood surcharge cannot be retained in reservoir. the reservoir but will flow over the spillway until Guard gate (guard valve) ―a gate or valve that the controlled retention water level is reached. operates fully open or closed. It may function as a Flood wall―a concrete wall constructed adjacent secondary device for shutting off the flow of water to a stream to prevent flooding of property on the in case the primary closure device becomes landward side of the wall, normally constructed in inoperable but is usually operated under conditions lieu of or to supplement a levee where the land of balanced pressure and no flow. required for levee construction is expensive or not Outlet gate―a gate controlling the outflow of available. water from a reservoir. Foundation of dam―the natural material on Radial gate (Tainter gate) ―a gate with a curved which the dam structure is placed. upstream plate and radial arms hinged to piers or Freeboard―the vertical distance between a stated other supporting structures. reservoir level and the top of a dam. Normal Service/Regulating gate (regulating valve) ―a freeboard is the vertical distance between Full gate or valve that operates under full pressure and Reservoir Level (FRL) and the top of the dam. flow to throttle and vary the rate of discharge. Minimum freeboard is the vertical distance between the Maximum Water Level (MWL) and Slide gate (sluice gate) ―a gate that can be opened the top of the dam. or closed by sliding it in supporting guides. Gallery―(a) a passageway within the body of a Gravity dam―a dam constructed of concrete, dam or abutment, hence the terms grouting gallery, masonry, or both that relies on its weight for inspection gallery and drainage gallery (b) a long stability. and rather narrow hall, hence the following terms Grout cap―a pad or wall constructed to facilitate for a power plant viz.valve gallery, transformer pressure grouting of the grout curtain beneath it. gallery and bus bar gallery. Grout curtain (grout cutoff) ―a barrier produced Gate―a device in which a leaf or member is by injecting grout into a vertical zone, usually moved across the waterway from an external narrow horizontally, in the foundation to reduce position to control or stop the flow. seepage under a dam. Bulkhead gate―a gate used either for temporary Height above lowest foundation―the maximum closure of a channel or conduit to empty it for height from the lowest point of the general inspection or maintenance or for closure against foundation to the top of the dam. flowing water when the head difference is small, e.g., for diversion tunnel closure. Although a Hydraulic height―the height to which water rises bulkhead gate is usually opened and closed under behind a dam and the difference between the lowest nearly balanced pressures, it nevertheless may be point in the original streambed at the axis of the capable of withstanding a high-pressure differential dam and the maximum controllable water surface. when in the closed position. 192 Emergency Action Plan for Karanja Dam October-2019 Hydrograph―a graphic representation of Minimum operating level―the lowest level to discharge, stage, or other hydraulic property with which the reservoir is drawn down under normal respect to time for a point on a stream. (At times operating conditions. the term is applied to the phenomenon the graphic Morning glory spillway―see spillway. representation describes; hence a flood hydrograph is the passage of a flood discharge past the Full Reservoir Level (FRL)/Normal water observation point.) level―for a reservoir with un-gated spillway it is the spillway crest level. For a reservoir, whose Inclinometer―an instrument, usually consisting outflow is controlled wholly or partly by movable of a metal or plastic tube inserted in a drill hole and gates, siphons or other means, it is the maximum a sensitized monitor either lowered into the tube or level to which water can be stored under normal fixed within it. The monitor measures at different operating conditions, exclusive of any provision for points the tube’s inclination to the vertical. By flood surcharge. integration, the lateral position at various levels of the tube may be found relative to a point, usually One-Hundred Year (100-Year) Exceedance the top or bottom of the tube, assumed to be fixed. Interval― the flood magnitude expected to be The system may be used to measure settlement. equaled or exceeded on the average of once in 100 years. It may also be expressed as an exceedance Intake―any structure in a reservoir, dam, or river frequency, i.e. a percent chance of being exceeded through which water can be drawn into an in any given year. aqueduct. Outlet―an opening through which water can be Internal Erosion―see piping. freely discharged from a reservoir. Inundation map―a map delineating the area that Overflow dam―a dam designed to be overtopped. would be inundated in case of a failure. Parapet Wall―a solid wall built along the top of Leakage―Uncontrolled loss of water by flow a dam for ornament, for the safety of vehicles and through a hole or crack. pedestrians, or to prevent overtopping. Lining― a coating of asphaltic concrete, Peak Flow―the maximum instantaneous reinforced or unreinforced concrete, shotcrete, discharge that occurs during a flood. It coincides rubber or plastic on a canal, tunnel etc. to provide with the peak of a flood hydrograph. water tightness, prevent erosion, reduce friction, or support the periphery of structure. May also refer Pervious Zone―a part of the cross-section of an to lining, such as steel or concrete, of outlet pipe or embankment dam comprising material of high conduit. permeability. Low-level outlet (bottom outlet) ―an opening at Phreatic Surface―the top most flow line in an a low level from a reservoir generally used for embankment dam. emptying or for scouring sediment and sometimes Piezometer―an instrument for measuring pore for irrigation releases. water pressure within soil, rock, or concrete. Masonry dam―a dam constructed mainly of Piping―the progressive development of internal stone, brick, or concrete blocks that may or may not erosion by seepage, appearing downstream as a be joined with mortar. A dam having only a hole or seam discharging water that contains soil masonry facing should not be referred to as a particles. masonry dam. Pore Pressure―the interstitial pressure of water Maximum cross-section of dam―a cross-section within a mass of soil, rock, or concrete. of a dam at the point of its maximum height. Pressure Cell―an instrument for measuring Maximum water level―the maximum water pressure within a mass of soil, rock, or concrete or level, including flood surcharge, the dam is at an interface between one and the other. designed to withstand. Pressure Relief Pipes―Pipes used to relieve uplift Membrane (Diaphragm)―a sheet or thin zone or or pore water pressure in a dam’s foundation or facing made of a flexible material, sometimes structure. referred to as a diaphragm wall or diaphragm. Probable Maximum Flood (PMF)―a flood that would result from the most severe combination of
193 Emergency Action Plan for Karanja Dam October-2019 critical meteorologic and hydrologic conditions expressed as a percentage when the slope is gentle, possible in the region. in which case the term gradient is also used. Probable Maximum Precipitation (PMP)―the Slope Protection―the protection of a slope maximum amount and duration of precipitation that against wave action or erosion. can be expected to occur on a drainage basin. Sluiceway―see low-level outlet. Pumped storage reservoir―a reservoir filled Spillway―a structure over or through which flood entirely or mainly with water pumped from outside flows are discharged. If the flow is controlled by its natural drainage area. gates, it is a controlled spillway; if the elevation of Regulating dam―a dam impounding a reservoir the spillway crest is the only control, it is an from which water is released to regulate uncontrolled spillway. Reservoir area―the surface area of a reservoir Auxiliary Spillway (Emergency Spillway) ―a when filled to controlled retention level. secondary spillway designed to operate only during exceptionally large floods. Reservoir routing―the computation by which the interrelated effects of the inflow hydrograph, Fuse-Plug Spillway―an auxiliary or emergency reservoir storage, and discharge from the reservoir spillway comprising a low embankment or a are evaluated. natural saddle designed to be overtopped and eroded away during a rare and exceptionally large Reservoir surface―the surface of a reservoir at flood. any level. Primary Spillway (Principal Spillway) ―the Riprap―a layer of large stones, broken rock, or principal or first-used spillway during flood flows. precast blocks placed randomly on the upstream slope of an embankment dam, on a reservoir shore, Shaft Spillway (Morning Glory Spillway) ―a or on the sides of a channel as a protection against vertical or inclined shaft into which flood water wave action. Large riprap is sometimes referred to spills and then is conducted through, under, or as armoring. around a dam by means of a conduit or tunnel. If the upper part of the shaft is splayed out and Risk assessment―as applied to dam safety, the terminates in a circular horizontal weir, it is termed process of identifying the likelihood and a “bell mouth” or “morning glory” spillway. consequences of dam failure to provide the basis for informed decisions on a course of action. Side Channel Spillway―a spillway whose crest is roughly parallel to the channel immediately Rock fill Dam―see embankment dam. downstream of the spillway. Roll Crete or Roller-Compacted Concrete Ano- Siphon Spillway―a spillway with one or more slump concrete that can be hauled in dump trucks, siphons built at crest level. This type of spillway is spread with a bulldozer or grader, and compacted sometimes used for providing automatic surface- with a vibratory roller. level regulation within narrow limits or when Seepage―the interstitial movement of water that considerable discharge capacity is necessary within may take place through a dam, its foundation, or its a short period. abutments. Spillway Channel (Spillway Tunnel) ―a channel Sill―(a) A submerged structure across a river to or tunnel conveying water from the spillway to the control the water level upstream. (b) The crest of a river downstream. spillway. (c) A horizontal gate seating, made of Stilling Basin―a basin constructed to dissipate the wood, stone, concrete or metal at the invert of any energy of fast-flowing water, e.g., from a spillway opening or gap in a structure, hence the expressions or bottom outlet, and to protect the riverbed from gate sill and stop log sill. erosion. Slope―(a) the side of a hill or mountain. (b) The Stop logs―large logs or timber or steel beams inclined face of a cutting or canal or embankment. placed on top of each other with their ends held in (c) Inclination from the horizontal. In the United guides on each side of a channel or conduit States, it is measured as the ratio of the number of providing a cheaper or easily handled temporary units of horizontal distance to the number of closure than a bulkhead gate. corresponding units of vertical distance. The term is used in English for any inclination and is
194 Emergency Action Plan for Karanja Dam October-2019 Storage―the retention of water or delay of runoff Trash rack―a screen located at an intake to either by planned operation, as in a reservoir, or by prevent the ingress of debris. temporary filling of overflow areas, as in the Tunnel―a long underground excavation usually progression of a flood crest through a natural having a uniform cross-section. Types of tunnel stream channel. include: headrace tunnel, pressure tunnel, Tailrace―the tunnel, channel or conduit that collecting tunnel, diversion tunnel, power tunnel, conveys the discharge from the turbine to the river, tailrace tunnel, navigation tunnel, access tunnel, hence the terms tailrace tunnel and tailrace canal. scour tunnel, draw-off tunnel, and spillway tunnel. Tail water Level―the level of water in the tailrace Under seepage―the interstitial movement of at the nearest free surface to the turbine or in the water through a foundation. discharge channel immediately downstream of the Uplift―the upward pressure in the pores of a dam. material (interstitial pressure) or on the base of a Toe of Dam―the junction of the downstream face structure. of a dam with the ground surface, referred to as the Upstream Blanket―see blanket. downstream toe. For an embankment dam the junction of upstream face with ground surface is Valve―a device fitted to a pipeline or orifice in called the upstream toe. which the closure member is either rotated or moved transversely or longitudinally in the Top of Dam―the elevation of the uppermost waterway to control or stop the flow. surface of a dam, usually a road or walkway, excluding any parapet wall, railings, etc. Water stop―a strip of metal, rubber or other material used to prevent leakage through joints Top Thickness (Top Width) ―the thickness or between adjacent sections of concrete. width of a dam at the level of the top of the dam. In general, “thickness” is used for gravity and arch Weir―(a) a low dam or wall built across a stream dams, “width” for other dams. to raise the upstream water level, called fixed-crest weir when uncontrolled. (b) A structure built across Transition Zone (Semi-pervious Zone) ―a part a stream or channel for measuring flow, sometimes of the cross-section of a zoned embankment dam called a measuring weir or gauging weir. Types of comprising material of intermediate size between weir include broad-crested weir, sharp-crested that of an impervious zone and that of a permeable weir, drowned weir, and submerged weir. zone.
195 Emergency Action Plan for Karanja Dam October-2019 CHAPTER: -8
Gate operation schedules of spillways for Karanja dam
Gate operation schedules for dams with gated spillways
The gate operation schedule must be prepared based on the site conditions the result of model studies and the regulation schedule of the reservoir. The gate operation schedule should clearly indicate the complete sequence and stage of operation of various gates corresponding to various lake levels and the flood situations. These details should also be incorporated in the standing operating of the reservoir along with the regulation schedule and maintance schedule of the gate. A typical gate operation schedule of Karanja Dam on Karanja river in Godavari basin. The following general guidelines may be borne in mind in preparing the gate operation schedule: -
(a) If the dam has got stilling basin at two different elevation then the gates with stilling basin at lower at lower level should be operated first. The regulation of gates should be based on model studies. The aim will be to ensure safety of dam structure including the gate parts energy dissipation arrangement and spillway tail channel while letting out the desired discharge. (b) The enc gate should normally be opened first to prevent cross flows striking against the guide walls and junctions. (c) At any time during the operation of different gates, the difference in gate opening of any two consecutive gates should not exceed 0.8 meters. (d) After opening the end gate, that gates at the center should be opened and the other gate should be opened in symmetrical manner starting from the center towards the end through gradual increase in the openings. (e) While closing the gates, the gate that was opened last should be closed first. The procedure to be followed for closing the gates would generally be the reverse of the procedure followed for opening the gates. Complete closure of the gates should be accomplished by gradual lowering of the gates by 0.2 to 0.3meter in the proper sequence. (f) All efficient and reliable system of flood forecasting should be stabilized at the dam site to facilitated (i) Formulation of accurate forecasts of rate of inflow and volume of floods at the dam site (ii) regulation of the gates for efficient flood disposal. (g) While surplussing the floods when the reservoir is at or near about the F.R.L. towards the end of monsoon (i)the reservoir level should not be allowed to encroach upon the free board. (ii) no part of conservation storage is allowed to spill towards the later part of the monsoon
196 Emergency Action Plan for Karanja Dam October-2019
GATE OPERATION SCHEDULE ______
Sequence Hight of Serial Number of Gate Opening in Meter ______I 0.15 1 3 5 II 0.15 2 4 6 III 0.30 1 3 5 IV 0.30 2 4 6 V 0.48 1 3 5 VI 0.48 2 4 6 VII 0.60 1 3 5 VIII 0.60 2 4 6 iX 0.78 1 3 5 X 0.78 2 4 6
______Further opening in the sequence is as above
O.C Signed by ………………….. (Signed)…………………….. (Signed)………………….
For Executive Engineer KNNL Assist Executive Engineer KNNL K.P.C. Division No-1 Bidar Sub-Divisional No-3 Halhalli
197 Emergency Action Plan for Karanja Dam October-2019
Central Dam Safety Organisation
Central Dam Safety Organisation Central
Vision
To remain as a premier organisation with best technical and managerial
expertise for providing advisory services on matters relating to dam safety. Mission To provide expert services to State Dam Safety Organisations, dam owners,
dam operating agencies and others concerned for ensuring safe functioning of dams with a view to protect human life, property and the environment. Values Integrity: Act with integrity and honesty in all our actions and practices. Commitment: Ensure good working conditions for employees and encourage professional excellence.
Transparency: Ensure clear, accurate and complete information in communications with stakeholders and take all decisions openly based on reliable information. Quality of service: Provide state-of-the-art technical and managerial services within agreed time frame.
Quality Policy
We provide technical and managerial assistance to dam owners and State Dam Safety Organizations for proper surveillance, inspection, operation and maintenance of all dams and appurtenant works in India to ensure safe functioning of dams and protecting human life, property and the environment. We develop and nurture competent manpower and equip ourselves with state of the art technical infrastructure to provide expert services to all stakeholders. Water Commission We continually improve our systems, processes and services to ensure satisfaction of our customers.
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