procurement of recommended spares for explosion prevention and fire extinguishing system for transformers and reactors installed at 2x660mw unit no 3 and 4 sstpp stage ii mppgcl dongalia , nitrogen cylinder 10 cubic mtr capacity (with nitrogen) , regulator sub-assembly , fire detector assembly, flash point 141 degree celsius , heat sensor-sprinkler (heat sensing part of fire detector) , stem actuated valve assembly , non return valve (nrv) , hose pipe assembly , 1/4,1.25 mtr length , hose pipe assembly , 3/8,0.9 mtr length , pressure monitor switch assembly(pms) , 4 core, 1.5 sq.mm fire survival cable , transformer conservator isolation valve(tciv) for 270mva gt , transformer conservator isolation valve(tciv) for 95mva st , transformer conservator isolation valve(tciv) for 125mvar reactor , g02 limit switch assembly , g03 limit switch assembly , g04 limit switch assembly , g05 limit switch assembly , g06 limit switch assembly , manifold assembly