Tender For custom bid for services - gt5 exhaust plenum modification diffuser installation job by ms bggts rprc252039--1. owner will issue the new exhaust plenum & diffuser along with supplied hardwares on free issue basis. 2. power, water & air shall be provided by iocl as per scc norms. utility connections are available at site and contractor is to make necessary facilities required to use the utilities from the existing point. 3. heavy equipment like crane, hydra, forklift, tractor with trailer as per the site requirement inside refinery premises will be provided to the contractor by iocl. 4. scaffolding as & when required shall be provided by iocl