KERALA STATE ELECTRICITY BOARD on Athirappilly HE Project -163 MW Western Ghats Ecology Expert Panel (WGEEP)
Total Page:16
File Type:pdf, Size:1020Kb
KERALA STATE ELECTRICITY BOARD Presentation on Athirappilly HE Project -163 MW before Western Ghats Ecology Expert Panel (WGEEP) Chalakudy, Thrissur – 29 th January 2011 Athirappilly HE Project – 163 MW Athirappilly HEP ––LocationLocation Proposed project is located in Chalakudy river basin in Thrissur District, Kerala State Cascade Scheme with 94 % utilization of tail race discharges and spills from existing upstream reservoirs Projects up stream Sholayar Hydro Electric Project (54MW) Poringalkuthu Hydro Electric Project (48MW) KERALA STATE ELECTRICITY BOARD Athirappilly HE Project – 163 MW An overview Athirappilly project KERALA STATE ELECTRICITY BOARD Athirappilly HE Project – 163 MW Surge Dam Reservoir Tunnel Dam toe Power House Power House Vertical shaft Kannankuzhy thodu Kannankuzhythodu LONGITUDINAL SECTION Poringal dam Charpa Poringal Power Houses Poringal Adit Reservoir Tunnel Athirappilly Reservoir Dam toe PH To Sholayar Surge SH 21 Pokalappara Colony Dam Power House(2X80) MW Replacement Road To Chalakudy Athirappilly Falls Chalakudy River LAY OUT PLAN Athirappilly HE Project – 163 MW • The upstream most project is Sholayar which is operation since 1966. • The Sholayar project utilizes the water resources of Sholayar River a tributary of Chalakudy River • The tail water of Sholayar after generation flows to downstream Poringalkuthu reservoir. • The Poringalkuthu project is in operation for more than 50 years it is in the main river itself. Athirappilly HE Project – 163 MW • The tail water of Poringalkuthu discharges to Chalakudy River. • The proposed Athirappilly HE project is located downstream of Sholayar and Poringalkuthu projects. Athirappilly HE Project – 163 MW Location of project w.r.t falls & river diversion (weir) scheme ATHIRAPPILLY CATCHMENT AREA KANNANKUZHI PORINGAL POWER THODU HOUSE PORINGAL TUNNEL LINE ATHIRAPPILLY RESERVOIR RESERVOIR MAIN POWER SHOLAYAR HOUSE DAM TOE P.H SURGE RELEASE PROPOSED PROPOSED DAM REPLACEMENT ROAD 1460* M 1460* ANAKAYAM RIVER ATHIRAPPILLY WATER FALLS 1820* M 6070 M * 2525* M WEIR 13 Km along road * Along the river course Athirappilly HE Project – 163 MW Schematic Chart 348MCM from TN Sholayar & own catchment Kerala Sholayar 54 MW Inflow from own Spill & Tailrace catchment 348MCM Poringalkuthu & Spill & Tailrace Athirappilly Poringalkuthu LBE 1097MCM 163MW 48 MW (Proposed) Inflow from own catchment 72MCM KERALA STATE ELECTRICITY BOARD Athirappilly HE Project – 163 MW Surge Dam Reservoir Tunnel Dam toe Power House Power House Vertical shaft Kannankuzhy thodu Kannankuzhythodu LONGITUDINAL SECTION Poringal dam Charpa Poringal Power Houses Poringal Adit Reservoir Tunnel Athirappilly Reservoir Dam toe PH To Sholayar Surge SH 21 Pokalappara Colony Dam Power House(2X80) MW Replacement Road To Chalakudy Athirappilly Falls Chalakudy River LAY OUT PLAN Athirappilly HE Project – 163 MW • The diversion structure of this project is about 3 Km downstream of tail water confluence of Poringalkuthu. • The live storage of this impoundment is about 5.5 Million Cubic Meter. • Water from this is diverted through an under ground water conductor system to a power house located on the left bank of Kannankuzy thodu. • The installed capacity of this plant is 2 X 80 MW. • The tail water of this plant releases to Chalakudy River through Kannakuzhy thodu. Athirappilly HE Project – 163 MW • If the entire water is diverted to the power house, a dry stretch will be formed between the diversion structure and tail race confluence at Kannankuzhy. • MoE&F has stipulated to maintain a certain amount of flow in the river by releasing from the reservoir in order to avoid the formation of a dry stretch. Athirappilly HE Project – 163 MW • Utilizing this release, it is proposed to install a power station with 2 X 1.5 MW capacity to generate power in the immediate downstream of the diversion structure. • The water available in the Athirappilly reservoir is released to the River through the above two plants viz.2 x 80 MW & 2 x 1.5 MW • Hence after confluence of Kannankuzhy,the entire water will be available for downstream users. Athirappilly HE Project – 163 MW Salient Features Dam height - 23 M Tunnel length - 4689 M Storage capacity (Gross) - 8.44 MCM Main Powerhouse - 2x80 MW Dam Toe Powerhouse - 2x1.5 MW Gross Head - 160 M Water Required - 2.80 MCM/MU Athirappilly HE Project – 163 MW Salient Features Total forest area to be diverted – 138.60 Ha Area for temporary use & return – 13.20 Ha Permanent forest area diversion – 125.40 Ha Total Submergence area at FRL – 104.40 Ha Forest plantations -36.80 Ha Natural forest - 28.40 Ha River bed portion - 39.20 Ha Forest area at 4M below FRL Area at 4M below FRL - 81.00 Ha Clearance of natural forest & plantations - 41.80 Ha Athirappilly HE Project – 163 MW • 90% dependable energy is arrived as 233 Million units. • The 233 Million Units of generation is from the net inflow available downstream of Poringalkuthu after taking in to account all diversions. • Central Electricity Authority has accorded TEC for the project. Athirappilly HE Project – 163 MW Project Clearances Techno Economic Clearance granted in May 1996 (vide ref. No.2/KEL/9/96-PAC/4736-45 dated 3/05/1996) Forest Clearance granted – Stage-I in December 1997 (vide ref. No. 8-12/97-FC dated 22/12/1997) – Stage-II in December 1999 (vide ref. No. 8-12/97-FC dated 16/12/1999) Environmental Clearance granted (vide ref. No. J-11016/36/83-IA dated 20/01/1998) Athirappilly HE Project – 163 MW Environmental Clearance was granted based on: Rapid EIA by TBGRI, Trivandrum (1996) R&R Plan by TBGRI, Trivandrum (1996) Catchment Area Treatment Plan by CESS/Kerala Forest Department (1996) Field visit by Expert Committee members on 21/08/1997 Prof. P.G. Sastry, Prof. K. Paliwal & Dr. S. Bhowmik KERALA STATE ELECTRICITY BOARD Athirappilly HE Project – 163 MW Environmental Clearance was granted based on: Findings of Dr.P.Kannan, Reg.Dy.Dir (WLP) and Dr. R. Sukumar, Scientist – deputed by MoE&F Dr.P. Kannan – Project area not under Tiger Reserve, Project does not affect elephant migratory route (letter no. 7-135/WSR/97 dated 14/10/1997) Dr. R. Sukumar – No impact on elephant population, no obstruction to elephant movement (letter dated 11 /11/ 1997) KERALA STATE ELECTRICITY BOARD Athirappilly HE Project – 163 MW Public Interest Litigations OP No. 1774 of 2001 filed by Sri. A.P. Usman OP No. 3581 of 2001 by Sri. S.P. Ravi & Others OP No. 7713 of 2001 by Sri. Dharmarajan On the grounds that Complaining that Board has dispensed with essential criterion of tender – financial package Public hearing was not conducted KERALA STATE ELECTRICITY BOARD Athirappilly HE Project – 163 MW Public Interest Litigations Common Judgment dated 17/10/2001 allowed OPs in part Directed to comply with EIA notification 1994 as amended by notification of 1997 in so far as it relates to public hearing and to send up to the authorities concerned the report on public hearing Directed Central Government to reconsider the question of grant of environmental clearance Directed State Government to examine issues relating to financial package Directed the Board to optimise generation and minimize T&D loss Finalisation of contract and starting of work – stayed till fresh decision is taken by Government of India on environmental clearance and by Government of Kerala on financial package Pursuant to the Judgment, MoE&F suspended the Environmental Clearance till public hearing report is submitted (ref. No. J.12011/11/2001J.12011/11/2001--IAIA--II dated 19/11/200119/11/2001)) Athirappilly HE Project – 163 MW Compliance of Judgment dated 17/10/2001 Notified Public hearing to be held on 6/02/02 CEIA study entrusted with WAPCOS (Jan 2002) Another PIL (OP 2846/2002) was filed for further EIA should be complied before public hearing Judgment dated 28/ 01 / 2002 in the above OP – EIA not mandatory before EPH. Public hearing was held on 6 / 02 / 2002 by KSPCB after circulating Rapid EIA and Project Summary prepared by TBGRI KERALA STATE ELECTRICITY BOARD Athirappilly HE Project – 163 MW Compliance of Judgment dated 17/10/2001 KSPCB submitted the report on Public hearing (Letter No.PCB/TSR/CE/59/2001 dated 4/03/2002) Studies and reports as requested by MoE&F were undertaken by KSEB and submitted Studies and reports as requested by CWC were undertaken by KSEB and submitted The project was considered by Expert Committee for River Valley and Hydro Electric Projects on 10.1.2005 The committee noted that issues raised in the public hearing have been clarified in the CEIA and recommended withdrawal of suspension of environmental clearance Project Clearances Environmental Clearance granted (vide ref. No. J-12011/6/97-IA-I(Vol.II) dated 10/02/2005) Techno Economic Clearance granted in March 2005 (vide ref. No.2/KEL/9/89-PAC/331-55 dated 31 / 03 / 2005) Forest & Environmental Clearances granted Public Interest Litigations OP No. 9542 of 2005 filed by Ms. Geetha OP No. 11254 of 2005 by Sri.P.M.Pushpangadan OP No. 26073 of 2005 by Sri. C.Madhusoodhan Complaining that Board has conducted public hearing (on 6. 2 . 2002) without circulating the EIA report prepared by WAPCOS (based on the amendment in EIA notification dated 13.6.2002) Public Interest Litigations Common Judgment pronounced on 23/03/2006 stated …The Electricity Board in these two counter affidavits has taken pains to show us that the project as envisaged now could not have any adverse environmental impact and as such it is not necessary to interfere with the environmental clearance now granted. …….. we are disposing of these writ petitions solely on the ground of non-compliance with the amended notification which applies to the present case going by the ratio of Ext .P3 judgment Electricity Board is bound to apply for environmental clearance by the 1st respondent afresh after publishing the Environmental Impact Assessment report stated to have been got prepared by the KSEB and conducting a public hearing after publication of the report.