Substation & Switchyard Works Tenders

Survey, Investigation, Design, Supply, Erection, Testing and Commissioning of Tank Filling scheme for filling 32numbers of MI/ZP tanks of gudavi(Head works consisting of construction of Barrage, in take trough with forebay, Jack well cum pump house, vertical turbine pumps coupled to motors, pump house electrical works, necessary valves, delivery pipe, manifold system, electrical panel, soft strater, capacitors, 11KV transformer, 11/0.433 KV sub station, 11 KV power line and 11 KV terminal bay, r

Lighting of outdoor switchyard

Lighting of outdoor switchyard

Earthing of S/s outdoor equipments: Laying of earth mat in the switchyard by laying of M.S. round of 32 mm dia in 1000 mm deep trenches with M.S. round 32mm dia, 3 Mtr. long earth electrodes as per RESPO/approved SOP drawing. The work includes welding of the M.S. round, connecting all steel structures in the switchyard with the earth mat by means of G.I. strips of size 50x6 mm as per item below (All required materials will be provided by contractor), (A) Excavation of earth/trenches 1000 mm deep from FGL level for laying MS earth mat (32 mm dia MS round rod), (B) Laying of 32 mm dia MS round earth rod horizontally in 1000 mm deep trenches at every 3 mtr lengthwise and every 3 mtr widgthwise throughout the switchyard., (C) At the level of 1000 mm deep trenches, at each cross joint of horizontally laid MS earth mat, bury 3 mtr long 32 mm dia MS round earth rod vertically in the ground and properly shape and weld each joint. The works includes cutting, shaping and binding, preparation of joints, proper making and welding of main earth mat bar joints and applying bitumen, bitumen impregnated on joints U clamp i.e. end joints, cross joints, lap joints etc) and (D) To weld riser GI strip of 50x6 mm from main horizontal earth mat as per leg of each switchyard structures and to weld riser strip from two different locations (top & bottom) on the leg of the structures of each equipments like Transformer, Terminal gantry, Bus-bar gantry, Post insulator, 33 kV CT, 33 kV PT, Line & Bus isolator etc.

Gravel packing in tubewell construction in accordance with IS: 4097, including providing gravel fine/ medium/ coarse, in required grading & sizes as per actual requirement, all complete as per direction of Engineer-in-charge. (DSR. 23.8 (Civil)