bids are invited for repair, maintenance, and installation of plant/ systems/equipments (version 2) - manufacturing unit; total price including all applicable taxes and duties for various maintenance jobs for hpna campaign shutdown april may 2026 rcf mumbai as per sow an..--opening and boxing up of ammonia tail gas reactor (scr) with crane in contractor scope pneumatic testing and tube plugging of e012 exchanger opening, pneumatic testing, repair and box up of tail gas preheater e012 in hpna tube plugging tube to tube sheet joint repair shell repair (ss seam welding) pneumatic testing and tube plugging of e014 exchanger opening, pneumatic testing, repair and box up e014 in hpna removal and reinstallation of heat exchanger from position (including cutting and welding of 02 joint of 40” and 01 joints of 24”) tube plugging ss 304l tube to tube sheet welding repair shell repair ss 304l opening and boxing up for cleaning of cooler condenser (e 007), surface condenser (e 016) opening and boxing up of cooler condenser (e 007) for cleaning opening and boxing up of surface condenser cooler (e 016) for cleaning opening and boxing up of ejector condenser cooler for cleaning pneumatic testing and tube plugging of e030 exchanger pneumatic testing of inter stage cooler(e030) tube plugging tube to tube sheet joint opening and boxing up of lube oil coolers (2 nos) of process air compressor for tube cleaning in hpna plant(both lube oil cooler) opening and box up of flanges for cleaning and oil flushing flange sizes below and upto 2”150# flange sizes above 3” to 4” 150# flange sizes 6” to 8” 150# flange sizes 10” to 14” 150# various welding jobs ss welding cs welding