Emergency Action Plan for IDAMALAYAR DAM MAY 2020 Emergency Action Plan (Tier- I) Idamalayar Dam Kerala State Electricity Board Ltd. DOC No. KSEBL_EAP_22_IDAMALAYAR _R1 May 2020 i Emergency Action Plan for IDAMALAYAR DAM MAY 2020 IDAMALAYAR DAM (KL29VH0036) DISCLAIMER This is a Tier I EAP document prepared based on the Dam Break Analysis carried out using digital elevation model (DEM) derived from Japan Aerospace Exploration Agency (JAXA) global digital surface model (DSM) dataset with a horizontal resolution of approximately 30meters (1 arc-sec). Every effort has been taken to estimate the severity of flooding and inundation areas likely to be affected due to the failure of Idamalayar Dam. These estimates are based on available primary and secondary data. Every effort has been made to foresee varied emergency possibilities and develop appropriate notification procedures for timely rescue and relief operations. However, implementation of the Emergency Action Plan (EAP) involves many agencies, who are required to work in a coordinated manner to reduce the consequences of the emergency triggered by the dam site condition. Effectiveness of the rescue and relief operations depend on many factors including the adequacy and accuracy of the estimation of the severity of flooding, coordinated efforts of all the agencies involved in rescue and relief efforts and availability of facilities like power, telephones, road communications, etc. EAP Developer may therefore, not be held responsible for the efficacy of the EAP. For any information, please contact: Supriya.S Chief Engineer (Civil – Dam Safety & DRIP) Kerala State Electricity Board Ltd. Dam safety Organization, Pallom Ph. +91 9496018719 Page i Emergency Action Plan for IDAMALAYAR DAM MAY 2020 TABLE OF CONTENT 1. APPROVAL AND IMPLEMENTATION ............................................................................................................ 1 2. EAP DISTRIBUTION LIST ............................................................................................................................... 3 3. LOG SHEET OF CHANGES ............................................................................................................................. 6 4. PURPOSE ..................................................................................................................................................... 7 5. DAM DESCRIPTION ...................................................................................................................................... 8 5.1 GENERAL ........................................................................................................................................................ 8 5.2 RESERVOIR OPERATIONS .................................................................................................................................... 9 6. RESPONSIBILITIES ...................................................................................................................................... 11 6.1 DAM OWNER’S RESPONSIBILITIES ...................................................................................................................... 11 6.2 DAM SAFETY ORGANIZATION’S RESPONSIBILITIES ................................................................................................. 15 6.3 RESPONSIBILITIES FOR NOTIFICATION ................................................................................................................. 15 6.4 RESPONSIBILITIES FOR EVACUATION ................................................................................................................... 17 6.5 RESPONSIBILITIES FOR TERMINATION AND FOLLOW-UP ......................................................................................... 19 7. COMMUNICATIONS NETWORKS ................................................................................................................ 21 8. EMERGENCY DETECTION, EVALUATION, AND CLASSIFICATION ................................................................. 22 8.1. EMERGENCY DETECTION ................................................................................................................................. 22 8.2. EMERGENCY EVALUATION AND CLASSIFICATION .................................................................................................. 23 8.3. PREVIOUSLY KNOWN PROBLEMS ...................................................................................................................... 24 9. PREPAREDNESS ......................................................................................................................................... 25 9.1 SURVEILLANCE ............................................................................................................................................... 25 9.2. RESPONSE ON FORECAST OF EXCESSIVE INFLOW ................................................................................................... 25 9.3. RESPONSE DURING WEEKENDS AND HOLIDAYS ..................................................................................................... 25 9.4. RESPONSE DURING PERIODS OF DARKNESS AND ADVERSE WEATHER ......................................................................... 25 9.5. ACCESS TO THE SITE ....................................................................................................................................... 26 9.6. REMEDIAL ACTIONS ....................................................................................................................................... 26 10. SUPPLIES AND RESOURCES ........................................................................................................................ 28 10.1. CONTRACTS................................................................................................................................................ 28 10.2. EQUIPMENT AND SUPPLIES ............................................................................................................................ 28 10.3. REPORTS ................................................................................................................................................... 28 11. EMERGENCY OPERATIONS CENTRE............................................................................................................ 29 11.1 ACTIVITY LOG .............................................................................................................................................. 29 11.2 COSTS OF THE EMERGENCY OPERATIONS CENTRE .............................................................................................. 29 12. INUNDATION AREA ................................................................................................................................... 30 12.1 INUNDATION MAPS ...................................................................................................................................... 30 12.2INUNDATED AREAS ........................................................................................................................................ 30 12.3. LOCAL EVACUATION PLAN ............................................................................................................................. 32 13. IMPLEMENTATION .................................................................................................................................... 34 13.1 DEVELOPMENT ............................................................................................................................................ 34 13.2 UPDATING ................................................................................................................................................. 34 13.3 TESTING ..................................................................................................................................................... 34 13.4. TRAINING .................................................................................................................................................. 35 Page ii Emergency Action Plan for IDAMALAYAR DAM MAY 2020 ANNEXURES ANNEXURE 1 - DAM DESCRIPTION – IDAMALAYAR DAM ...................................................................................... 36 ANNEXURE 2 - VICINITY MAP................................................................................................................................. 38 ANNEXURE 3 - INUNDATION MAP (SEPARATE BOOKLET) ..................................................................................... 40 ANNEXURE 4 - ACTION DATA SHEET ...................................................................................................................... 41 ANNEXURE 5 - WATCH NOTIFICATION FLOW CHART ............................................................................................ 61 ANNEXURE 6A - FAILURE NOTIFICATION FLOW CHART – IDAMALAYAR DAM (THRISSUR DISTRICT) ................... 63 ANNEXURE 6B - FAILURE NOTIFICATION FLOW CHART - IDAMALAYAR DAM (ERNAKULAM DISTRICT) ............... 65 ANNEXURE 6C - FAILURE NOTIFICATION FLOW CHART - IDAMALAYAR DAM (IDUKKI DISTRICT) ......................... 67 ANNEXURE 7 - SAMPLE PUBLIC ANNOUNCEMENTS .............................................................................................. 69 ANNEXURE 8 - SUPPLIES AND RESOURCES ............................................................................................................ 71 ANNEXURE 9A - INUNDATION CUM EVACUATION MAP –IDAMALAYAR DAM ....................................................