DOCSLIB.ORG

The Follow-Up Study on the Rehabilitation of Hydropower Stations in the Kelani River Basin for Hydropower Optimization in Sri La

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
The Follow-Up Study on the Rehabilitation of Hydropower Stations in the Kelani River Basin for Hydropower Optimization in Sri La No. THE FOLLOW-UP STUDY ON THE REHABILITATION OF HYDROPOWER STATIONS IN THE KELANI RIVER BASIN FOR HYDROPOWER OPTIMIZATION IN SRI LANKA FINAL REPORT Vol. I MAIN REPORT JULY 2005 JAPAN INTERNATIONAL COOPERATION AGENCY ECONOMIC DEVELOPMENT DEPARTMENT ED JR 05 - 053 PREFACE In response to a request from Government of the Democratic Socialist Republic of Sri Lanka, the Government of Japan decided to conduct the Follow-up Study on the Rehabilitation of Hydropower Stations on the Kelani River Basin for the Study on Hydropower Optimization in Sri Lanka and entrusted the study to the Japan International Cooperation Agency (JICA). JICA sent a study team led by Mr. Tsuyoshi Nakahata and organized by Electric Power Development Co., Ltd. to Sri Lanka five times from July 2004 to May 2005. The study team held discussions with the officials concerned of the Government of Sri Lanka, and conducted field studies in Sri Lanka. After its return to Japan, the team conducted further studies and compiled the results in this report. I hope this report will contribute to the promotion of rehabilitation of hydropower stations in the Kelani River basin and to the enhancement of friendly relations between our two countries. I wish to express my sincere appreciation to the persons concerned for their close cooperation throughout the study. July 2005 Tadashi Izawa Vice-President Japan International Cooperation Agency July, 2005 Mr. Tadashi Izawa Vice-President Japan International Cooperation Agency Tokyo, Japan Dear Mr. IZAWA, Letter of Transmittal We are pleased to submit our report on the Follow-up Study on the Rehabilitation of Hydropower Stations in the Kelani River Basin for the Study on Hydropower Optimization in Sri Lanka. This study was conducted for the purposes of carrying out inspections of troubles in the five hydropower stations in the Kelani River basin, of making the rehabilitation plan such as repair and replace with a feasibility study level for them and of giving suggestions of the maintenance manuals for hydropower in Sri Lanka. During the study period, we made our best effort to establish the optimum plans from the technical, economic and environmental points of view. We wish to take this opportunity to express our sincere gratitude to your Agency, the Ministry of Foreign Affairs, and the Ministry of Economy, Trade and Industry. We also wish to express our deep gratitude to the Ceylon Electricity Board, the Embassy of Japan in Sri Lanka, the JICA Sri Lanka Office, and other agencies concerned in Sri Lanka for the close cooperation and assistance extended to us during our study period. Very truly yours, Tsuyoshi Nakahata Team Leader The study team of the Follow-up Study on the Rehabilitation of the Kelani River Basin for the Study of Hydropower Optimization in Sri Lanka Laxapana Fall Castlereagh Dam Laxapana Hydropower Station (Old and New Laxapana Hydropower Station) Wimalasurendra Hydropower Station Turbines and Generators in Old Laxapana Hydropower Station Efficiency test in New Laxapana Hydropower station Intake Guard Valve House of Canyon Hydropower Station Water Leakage from Turbine in Polpitiya Hydropower Station The Follow-up Study on the Rehabilitation of Hydropower Stations in the Kelani River Basin The Study of Hydropower Optimization in Sri Lanka CONTENTS CONCLUSION AND RECOMMENDATION......................................................................... CR-1 Conclusion ....................................................................................................................... CR-1 Recommendation ............................................................................................................. CR-4 1. INTRODUCTION ...............................................................................................................1-1 1.1 Background of the Study ..........................................................................................1-1 1.1.1 Social and Economic Background .............................................................1-1 1.1.2 Necessity of Rehabilitation of Hydropower Stations in the Kelani River Basin and Request for Technical Assistance.........................1-1 1.2 Purposes of the Study ...............................................................................................1-2 1.3 Contents of Each Study Stage...................................................................................1-2 1.4 Persons involved in the Study (Positions as of the time of the Study) .....................1-4 2. GENERAL FEATURES OF SRI LANKA..........................................................................2-1 2.1 Topography...............................................................................................................2-1 2.2 Climate .....................................................................................................................2-2 2.3 Government ..............................................................................................................2-2 3. SOCIO-ECONOMY............................................................................................................3-1 3.1 Population.................................................................................................................3-1 3.1.1 Census Population......................................................................................3-1 3.1.2 Labor Force................................................................................................3-1 3.1.3 Ethnic Group..............................................................................................3-1 3.2 Macro Economic Features........................................................................................3-1 3.2.1 National Accounts......................................................................................3-1 3.2.2 Economic Sector Profile ............................................................................3-2 3.2.3 External Trade and Balance of Payment ....................................................3-2 3.2.4 Government Finance..................................................................................3-3 3.2.5 External Debt and Outstanding ..................................................................3-3 3.2.6 Price Indices and Exchange Rates..............................................................3-4 3.3 Projection of Socio-Economic Structures.................................................................3-4 3.3.1 Population and GDP Projection .................................................................3-4 4. PRESENT SITUATION OF POWER SECTOR IN SRI LANKA......................................4-1 4.1 Energy Situation .......................................................................................................4-1 4.2 History and Formation of Power Sector...................................................................4-1 4.3 Power Demand and Supply Balance ........................................................................4-5 4.4 Electricity Generation...............................................................................................4-7 4.5 Electricity Tariff .......................................................................................................4-8 4.6 Existing Power Plants.............................................................................................4-11 4.7 Introduction of Independent Power Producers (IPPs) ............................................4-12 4.8 Present Status of Transmission and Distribution Lines ..........................................4-13 Final Report i The Follow-up Study on the Rehabilitation of Hydropower Stations in the Kelani River Basin The Study of Hydropower Optimization in Sri Lanka 4.9 Forecast of Power Demand and Supply .................................................................4-13 4.10 Power Development Plan .......................................................................................4-14 4.11 History and Difficulties of Power Development Plan ............................................4-18 4.12 Transmission and Distribution Lines Expansion Plan............................................4-19 4.13 Present Situation of Hydropower Stations in Kelani River Basin..........................4-20 5. CIVIL STRUCTURES........................................................................................................5-1 5.1 Present Status and Rehabilitation Plan for Wimalasurendra Hydropower Plant ......5-3 5.1.1 Castlereagh Reservoir................................................................................5-3 5.1.2 Castlereagh Dam........................................................................................5-3 5.1.3 Intake..........................................................................................................5-5 5.1.4 Headrace Tunnel ........................................................................................5-5 5.1.5 Surge Tank..................................................................................................5-5 5.1.6 Penstock .....................................................................................................5-5 5.1.7 Powerhouse ................................................................................................5-5 5.1.8 Tailrace.......................................................................................................5-5 5.2 Present Status of and Rehabilitation Plan for Old Laxapana Hydropower Plant .....5-7 5.2.1 Norton
Load more

Recommended publications
  • World Bank Document
    DAM SAFETY AND WATER RESOURCES PLANNING PROJECT PROCUREMENT PLAN FOR CONSULTING SERVICES (Subject to Prior Review/Post Review) IDA Credit Number : 4406-CE Project ID: 093132 Revised on 13th November 2009 Description of services ame of of ame emarks (date) (date) eferance eferance finalished Date)** inalised project project (date)** (date)** (date)** Contract) Number inal RFP RFP inal ( f N objection by by objection the bank R Technical Technical Serial No Serial f method of R ationality & & ationality e ervice to be be to ervice ( (EOI) date t (Technical/ to the bank selection @ selection Package no Package Consultant/ Consultant/ roposal to be roposal to (us$million) short listing RFP Issued Issued RFP o World Bank Bank World b No objection S Date (US$M) Date eceived by the the by eceived RFP final draft N from bank for for bank from XP. Incurred to estimated cost contract/Final uthorities (date) P alue and Currency alue TOR/ shortlist/ Advertising for Advertising for Combined/Draft Combined/Draft r N to be forwarded to Contract Number, contract) (Date) contract) Evaluation to be to Evaluation Zip code, ifUSA completed (date) TOR/ shortlist to # E /#Combined/Draf V # A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Component -1 PP 1-Jan-06 1-Mar-06 21-Mar-06 23-Mar-06 24-Mar-06 5-Oct-06 7-Jun-06 7-Aug-06 SMEC 15-Feb-07 0.43 Design of NAWAM project and preparation of project report and project DSWRPP/CS/QBS/ Public Disclosure Authorized Public Disclosure Authorized 1 DSWRPP/CS/QBS/01 0.720 QBS Completed International (pty) R implementation plan for world Bank Appraisal 01 A 1-Jan-06 1-Mar-06 22-Mar-06 7-Apr-06 7-Apr-06 19-May-06 19-Jul-06 21-Jul-06 ltd.
    [Show full text]
  • Watawala Carolina Tea Factory
    Watawala MAP OF WATAWALA AND AROUND Carolina Tea Factory - Watawala TP - 94 (0) 11 4702400 . Carolina Tea Company of Ceylon Ltd. Incorporated in 1892 is one of the pioneer tea companies in the country, set up primarily to plant tea. It consisted of a group of plantations situated in Lower Dickoya. They were Agarawatte, Carolina, Kandawella, Mount Jean, Wigton, Udeapola Group, Trafalgar, Goarfell and St.Margaret Estates.The Management of this group that was originally with Leechman and Company changed to Mackwoods Estates & Agencies Ltd. at a later date. According to the times of Ceylon Green Book of 1939, this group had over 1,000 hectares in tea, 245 hectares in rubber, a few hundred coconut trees, and 726 hectares uncultivated, comprising a total extent at the stage was considered a substantial area for administration. The Carolina tea factory was one of the original "central factories" constructed by the river that ran by the estate, to avail themselves of water power. It was indeed an improvement to some of other factories of the day, with no mud floors and cadjan roofs. The building was of wood assembled firmly on stone pillars. It had three floors going up to the height of 42 feet from ground to ridge. Provision had been made for further expansion, but there was sufficient space to accommodate all the leaf not only from that group, but from many other adjoining plantations who were satisfied with a return of 9 cents (about 2p) per pound. The novelty was that very often than not, the green leaf arrived by train.
    [Show full text]
  • The Government of the Democratic Socialist
    THE GOVERNMENT OF THE DEMOCRATIC SOCIALIST REPUBLIC OF SRI LANKA FINANCIAL STATEMENTS OF THE GOVERNMENT FOR THE YEAR ENDED 31ST DECEMBER 2018 DEPARTMENT OF STATE ACCOUNTS GENERAL TREASURY COLOMBO-01 TABLE OF CONTENTS Page No. 1. Note to Readers 1 2. Statement of Responsibility 2 3. Statement of Financial Performance for the Year ended 31st December 2018 3 4. Statement of Financial Position as at 31st December 2018 4 5. Statement of Cash Flow for the Year ended 31st December 2018 5 6. Statement of Changes in Net Assets / Equity for the Year ended 31st December 2018 6 7. Significant Accounting Policies 7-10 8. Time of Recording and Measurement for Presenting the Financial Statements of Republic 11-12 Notes 9. Note 1-10 - Notes to the Financial Statements 13-17 10. Note 11 - Foreign Borrowings 18-24 11. Note 12 - Foreign Grants 25-26 12. Note 13 - Domestic Non-Bank Borrowings 27 13. Note 14 - Domestic Debt Repayment 27 14. Note 15 - Recoveries from On-Lending 27 15. Note 16 - Statement of Non-Financial Assets 28-214 16. Note 17 - Advances to Public Officers 215 17. Note 18 - Advances to Government Departments 215 18. Note 19 - Membership Fees Paid 215 19. Note 20 - On-Lending 216-217 20. Note 21 (Note 21.1-21.5) - Capital Contribution/Shareholding in the Commercial Public Corporations/State Owned Companies/Plantation Companies/ Development Bank (8568/8548) 218-223 21. Note 22 - Rent and Work Advance Account 224-226 22. Note 23 - Consolidated Fund 227 23. Note 24 - Foreign Loan Revolving Funds 227 24.
    [Show full text]
  • Future Coastline Recession and Beach Loss in Sri Lanka
    FUTURE COASTLINE RECESSION AND BEACH LOSS IN SRI LANKA Paul Bakker July 2018 Paul Bakker Future Coastline Recession and Beach Loss in Sri Lanka Future Coastline Recession and Beach Loss in Sri Lanka Master of Science (MSc) graduation thesis by: Paul J. J. Bakker Supervisors: Rosh W.M.R.J. Ranasinghe, prof. Pieter C. Roos, dr. ir. Mentors: Janaka Bamunawala, ir. Trang M. Duong, dr. ir. Keiko Udo, dr. ir. Examination committee: Ali Dastgheib, dr. ir. Rosh W.M.R.J. Ranasinghe, prof. (Chairman) Pieter C. Roos, dr. ir. July 2018 Illustrations cover page (f.t.l.t.b.r.): - Reiger, B. (2016). [Photograph]. Retrieved from: http://www.bertrandrieger.com/folio/691/sri-lanka-2016/page-6.html - n.d. (2016). [Photograph]. Retrieved from: https://island-spirit.org/sri-lanka/climate-changing-sri-lanka/ - Pushpa Kumara, M.A. & Tharangani Fonseka, R. (2014). Sea erosion in Ransigamawella, off Wennappuwa [Photograph]. Retrieved from: http://www.sundaytimes.lk/140824/news/alarm-over-rising-seas-but-villagers-keep-returning-to-risky- shore-114753.html - Barton, K. (2017). [Photograph]. Retrieved from: https://island-spirit.org/sri-lanka/climate-changing-sri-lanka/ - Sekitar (2012). Negombo Lagoon by air, Sri Lanka [Photograph]. Retrieved from: https://www.flickr.com/photos/sekitar/6860657454/ i Paul Bakker Future Coastline Recession and Beach Loss in Sri Lanka Abstract Amongst accelerating trends, the response of coastlines to sea-level rise is of major importance to policy makers. This research aims to provides a nation-wide overview of short-term (2050) and long- term (2100) coastline recession and beach loss along the Sri Lankan coast.
    [Show full text]
  • 6. Hydro-Mechanical Equipment
    6. HYDRO-MECHANICAL EQUIPMENT The Follow-up Study on the Rehabilitation of Hydropower Stations in the Kelani River Basin for The Study of Hydropower Optimization in Sri Lanka 6. HYDRO-MECHANICAL EQUIPMENT The outline of the site survey results for hydro-mechanical equipment is as follows. Also, attached are the main features for the hydro-mechanical equipment. Wimalasurendra Old Laxapana Canyon Equipment Hydropower Station Hydropower Station Hydropower Station Penstock No significant defects No significant defects Leakage from expansion Repair for the remote joints control of the penstock valve Spillway Plan for regulating the Plan for regulating Installation of accesses spillway gates spillway gates to anchorage Intake Repairing the intake No significant defects Plan for intake air valve equipment by CEB modification Bottom outlet CEB Plans for repairing No significant defects No significant defects the needle valve Tailrace No significant defects No gate Repairing the tailrace gate by CEB Other - - - New Laxapana Polpitiya Equipment Hydropower Station Hydropower Station Penstock Repair the drain and Touch up painting for passages corroded portions Spillway Installation of accesses Touch up painting to anchorage Drain holes at gate leafs Installation of accesses to anchorage Plan for a dam control system Intake Plan for Raking Plan for Raking machine machine Bottom outlet No significant defects No significant defects Tailrace No gate No significant defects Other Plan for Removing Plan for Removing sedimentation sedimentation Final Report
    [Show full text]