bids are invited for repair, maintenance, and installation of plant/ systems/equipments (version 2) - industry unit; substation; service provider; rectify the sf-6 gas leakage of 132kv sf-6 circuit breaker cgl make type 120-sfm-32b of for buscouplar bay at 132kv s/s kankarkhera –ii including work is of sf-6 gas leakage dismantling of “y” phase pole and opening of all grooves of flanges and porcelains with petrol, scrubber pad and acrylic solution. replacement of all o-ring of the inspection and rectification of gas leakage of 132kv sf-6 cb cgl make. reassembly of pole then. refilling of sf-6 gas up to required level. checking of proper operation of cb from local and remote. all material t&p required for its work including sf-6 gas (11 kg) will be arranged by the contractor at his own cost. (empty 11kg gas cylinder provided by upptcl free of cost.)