bids are invited for contract for assistance and maintenance jobs in suphala instrument dept at rcf, trombay unit.; 1 cleaning of weigh feeder belt, pulleys and rollers and frame by blowing air 2 cleaning of belt weighers mechanical assembly, rollers etc. by blowing air 3 cleaning of dcs/weigh feeder panels fans/filters with vacuum cleaner and blower 4 cleaning of field control panels with air / vacuum cleaner 5 assistance in cleaning/ descaling of instrument tapping with opening and box-up of flanges up to size 4 nb 6 round trip for shifting material / jobs between plant site and workshops/ stores 7 trips for shifting scrap material from plant site to yard 8 housekeeping, segregation, tagging and shifting of material within the plant 9 assistance in cleaning/ dust protection of junction box of size up to 450mm x 450mm 10 assistance in cleaning/dust protection of field instruments 11 assistance in dip tube removal and de chocking and box-up 12 assistance in radar level removal and cleaning 13 assistance in overhauling of control valve/ power cylinder up to 3 80nb size 14 assistance in overhauling of butterfly control valve of size up to 8 size 15 assistance in cleaning and descaling magnetic flow meter of size up to 3 nb 16 collecting check weight of material form belt of belt weighers and shifting to weigh balance 17 structural work fabrication of jb, instrument supports etc.