Chennai–Kanyakumari Industrial Corridor – Power Sector Investment
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i Initial Environmental Examination (Draft) – Annexes Project Number: 51308-001 July 2019 India: Chennai-Kanyakumari Industrial Corridor: Power Sector Investment Project Prepared by Tamil Nadu Transmission Company (TANTRANSCO), Government of Tamil Nadu (Department of Energy) for the Asian Development Bank. This initial environmental examination is a document of the borrower. The views expressed herein do not necessarily represent those of ADB's Board of Directors, Management, or staff, and may be preliminary in nature. Your attention is directed to the “terms of use” section of this website. In preparing any country program or strategy, financing any project, or by making any designation of or reference to a particular territory or geographic area in this document, the Asian Development Bank does not intend to make any judgments as to the legal or other status of any territory or area. LIST OF ANNEXURES Annexure 1: Minimum Ground Clearance as Per IE-1956 (Rule 77) 1 Annexure 2: Site Analysis for Grid Substations 4 Annexure 3: Route Analysis for Transmission Lines 7 Annexure 4: Inventory along the Transmission Lines 24 Annexure 5: Environmental Audit Checklist for Electric Power Transmission Substations 31 Annexure 6: Standards, Baseline Environment Monitoring for Air, Water, Noise and Soil Sampling for Subprojects 79 Annexure 7: National Parks and Sanctuaries in Tamil Nadu State 89 Annexure 8: Important Bird Area Information 101 Annexure 9: Details of Sample Public Consultations 151 Annexure 10: Terms of Reference for National Safeguards Consultant for Monitoring during Construction and comissioning 202 Annexure 11: Due Diligence Report of 2x800 Uppur Super Critical Coal based Thermal Power Plant 206 ANNEXURES Annexure 1: Minimum Ground Clearance as Per IE-1956 (Rule 77) Voltage Mandatory ground clearance as per I.E Rule 77 66 kV 6.1 meters 132 kV 6.1 meters 220 kV 7.0 meters 400 kV 8.84 meters 800 kV 12.40 meters Clearances from Buildings of HT and EHT voltage lines IE Rule 80 Vertical Distance High voltage lines up to 33 kV 3.7 Meter Extra High Voltage 3.7 Meter + Add 0.3 meter for every additional 33KV Horizontal clearance between the conductor and Building High Voltage Up to 11 kV 1.2 Meter 11 kV To 33 kV 2.0 Meter Extra High Voltage 2.0 Meter + Add 0.3 meter for every additional 33KV Clearance above ground of the lowest conductor As per IE Rule 77 Overhead Line Across Street Low and Medium Voltage 5.8 Meter High Voltage 6.1 Meter Overhead Line Along Street (Parallel To Street) Low and Medium Voltage 5.5 Meter High Voltage 5.8 Meter Overhead Line Without Across or Along Street Low/Medium/HT line up to 11 kV If 4.6 Meter Bare Conductor Low/Medium/HT line up to 11 kV If 4.0 Meter Insulated Conductor Above 11 kV Line 5.2 Meter Above 33 kV Line 5.8 Meter + Add 0.3 meter for every additional 33KV ROW WIDTH FOR VALLEYS 1. TANTRANSCO is following the Electrical Rules 77 and 80 which is strictly followed and as per guidelines. Therefore, it meets all national and international standards. 2 Supply No of Maximum Minimu Minimum Conducto Effect of Distance on Clearanc voltag circuit ROW m ROW ROW r to Conducto either side e from e s As per under Conducto r Swing & of the conducto guideline conducto r Distance Sag extreme end r to tree. s r in conductor(T As per valleys o be only Indian ** considered Electricit ‘’A” ‘’D” ##“E” in areas y rules under “B”=D+3 valleys) “C” 400 kV Double 46m 30 m 20 m 16.40m 1.3m 1.5m 5.5m ckt. 220 kV Double 35m 22m 15 m 10.4m 1m 1.5m 4.6m ckt. 132 kV Double 27m 19m 13 m 9.2m 0.61m 1.5m 4m ckt. 66 kV Double 18m 12m 7.0 m 3.78m 0.56m 1.5m 3.4m ckt. 33 kV Double 15m 9m 6.0 m 2.6m 0.4m 1.5m 2.8m Ckt 3 4 Annexure 2: Site Analysis for Grid Substations List of Projects Substation Operating voltages (kV) S1 Virudhunagar (2x1500 MVA) 765/400 S2 Ottapidaram (2x500 MVA) + (2x200 MVA) 400/230/110 New bays at associated substations Quantity S3.1 400 kV bays at Existing Kamuthi substation 2 S3.2 400 kV bays at Existing Kayathar substation 2 S3.3 110 kV bay provisions at Existing Vijayapuri substation 1 Sub total 5 COMPONENT I: Substations S1 – 765/400 kV Virudhunagar (2x1500MVA) Grid Substation SNo Description Site 1. Substation details 765/400 kV Virudhunagar substation with 2x1500 MVA, 765/400 kV ICTs 1a Area (dimensions) 226.53 acres 1b Geographical coordinates Mannarkottai & Valayapatti Village 9° 26' 41.827" N 77° 59' 52.876" E 1c Slope/Plain Land Plain 1d Amount of land cutting required Filling required in depressions 2 Number of transformers 2x1500MVA (3x500 MVA ICT each) 3 Number of Bays 2 No 765 kV bays, 6 Nos 400 kV bays 4 Size/ type of oil sump Sump pits & Oil collecting pit etc., which are covered at top, designed for a live load of 500 kg/sq.m 5 Ownership of land (Private / Forest/ Other Private Government Department/ Other) - Private - Government 6 Private land (in Bighas) 230 acres has been identified in Mannarkottai Village and Valayapatti Village (i) Agriculture:- Non-irrigated a. Irrigated b. Non-irrigated (ii) Non-Agriculture/ Private waste land / banjar. No data available (iii) House or Building: None a. Residential b. Non-Residential 7.a Distance from Nearest River/coastal area 61 km from coastal area 7.b Distance from Nearest National / State Highway 9 km from NH 7 7.c Distance from Nearest Forest Area 62 km Meghamalai WLS 7.b Distance from Nearest Village / town 20 km from Virudhunagar 7.e Distance from industry or thermal power plant 8. Distance from Interstate / International Boundaries 65 km from international waters 9. Nos. of Forest Trees:- No data a. Trees to be felled 5 SNo Description Site b. Trees to be lopped 10. Nos. of private trees No data (i) Fruit Trees: a. Trees to be felled b. Trees to be lopped (ii) Non-Fruit Trees: a. Trees to be felled b. Trees to be lopped 11. Altitude of substation 95 m 12. Nearest distance from Airport 52 km from Madurai airport 13. Distance from nearest religious or Archaeological Not determined sites 14. Name of villages involved/Name of District Mannarkottai Village and Valayapatti Village, Virudhunagar district (Source DPR and site visits) S2 – 400/230/110 kV Ottapidaram (2x500MVA) + (2x200MVA) Grid substation No Description Site 1. Substation details Establishment of 400/230-110 kV substation at Ottapidaram with 2x500MVA, 400/230 kV ICTs & 2x200MVA, 400/110 kV ICTs 1a Area (dimensions) 60.61 acres has been registered and the balance 12.33 cents is under the process of registration (DPR estimates) 1b Geographical coordinates Saminthan Village 8° 53' 39.695" N 78° 2' 53.010" E 1c Slope/Plain Land Plain 1d Amount of land cutting required None 2 Number of transformers 2x500 MVA and 2x200 MVA ICTs 3 Number of Bays 6 Nos. 400 kV bays 4 Nos 230 kV bays 5 No. 110 kV bays 4 Size/ type of oil sump Sump pits & Oil collecting pit etc., which are covered at top, designed for a live load of 500 kg/sq.m 5 Ownership of land (Private / Forest/ Other Ind Bharat, a private IPP Government Department/ Other) - Private - Government 6 Private land (in Bighas) 60.61 acres (i) Agriculture:- c. Irrigated d. Non-irrigated (ii) Non-Agriculture/ Private waste land / banjar. (iii) House or Building: c. Residential d. Non-Residential 6 No Description Site 7.a Distance from Nearest River/Coast 15 km from coast 7.b Distance from Nearest National / State Highway 5.12 km from NH 45B 7.c Distance from Nearest Forest Area No data 7.d Distance from Nearest Village / town 3 km from Puthiamputhur 7e. Distance from any industry/thermal power plant 1.3 km from thermal power plant 8. Distance from Interstate / International Boundaries 26 km international waters 9.. Nos. of Forest Trees:- None c. Trees to be felled d. Trees to be lopped 10.. Nos. of private trees Not estimated (iii) Fruit Trees: Nil c. Trees to be felled d. Trees to be lopped (iv) Non-Fruit Trees: Nil c. Trees to be felled d. Trees to be lopped 11. Altitude of substation 41 m 12. Nearest distance from Airport/railway station Aerially 25 km from Tuticorin railway station 13. Distance from nearest religious or Archaeological None sites 14. Name of villages involved/Name of District Saminathan village, Thoothukudi (Source DPR and site visits) S3-5. The three bays are also existing and therefore no analysis required. Data and site photographs are attached in Section 3. 7 Annexure 3: Route Analysis for Transmission Lines 3A.1 Maps containing 3 alternatives T1.1 Virudhunagar to Coimbatore PLOT 1 8 PLOT 2 9 PLOT 3 10 PLOT 4 11 T1.2 Virudhunagar to Kayathar 12 T1.3 Virudhunagar to Thappangundu 13 T2.1 Ottapidaram to Udangudi 14 T2.2 Ottapidaram to Kamuthi 15 T2.3 Ottapidaram to Sipcot-Kavanoor 16 T2.4 Ottapidaram to Savasapuram 17 T2.5 Ottapidaram to Eppothumvendran 18 T2.6 Ottapidaram to Vijayapuri 19 T2.7 Ottapidaram to TTN Auto-T-off Sipcot Lines 20 3A.2: Transmission line alternatives Transmission lines associated with Virudhunagar substation Route Length (km) T1.1 765 kV double circuit line Virudhunagar - Coimbatore 242 T12 400 kV double circuit line Virudhunagar - Kayathar 72 T1.3 400 kV double circuit line in and out at Virudhunagar for Kamuthi to Thappagundu 5 (proposed) line Transmission lines associated with Ottapidaram substation Route Length (km) T2.1 400 kV double circuit line Ottapidaram - Udangudi 68 T2.2 400 kV double circuit line Ottapidaram - Kamuthi 71 T2.3 230 kV double circuit line in and out at Ottapidaram for Sipcot - Kavanoor line 10 T2.4 230 kV double circuit line in and out at Ottapidaram for Sipcot - Savasapuram line 6 T2.5 110 kV double circuit line in and out at Ottapidaram for Ottapidaram - 4 Eppothumvendran T2.6 110 kV single circuit line Ottapidaram - Vijayapuri 34 T2.7 110 kV double circuit line in and out at Ottapidaram for TTN Auto - T-off Sipcot line 10 Source: Anna University Route Survey 2018 COMPONENT II.