bids are invited for chemical cleaning of tank , degutting & renewal per tank , recoating of tanks with high grade 3 part sigma paint scheme , renewal of inspection cover joint , repairs/renewal of site tubes , renewal of ms flanges for tanks on skid , cleaning and painting of the plant, system pipes and skid area , overhauling of discharge valve , remove/refit of discharge valve , overhauling of plug cock valve , remove/refit of plug cock valve , overhauling/repair of non-geared storm valves , remove/refit of non-geared storm valves , overhauling/repair of system bypass valves , remove/refit of system bypass valves , renewal of pvc valves , overhaul rotary compressor i.a.w oem manual , overhaul rotary compressor motor i.a.w oem manual , overhaul obd pump as per oem manual , overhaul obd pump motor as per oem manual , overhaul macerator pump as per oem manual , overhaul macerator pump motor as per oem manual , overhaul imo pump as per oem manual , overhaul imo pump motor as per oem manual , repair/reconditioning of book cell, renew cathode and anode plates and prove standard operation. , inspection, pressure testing/leak testing per system - pipe lines including overboard discharge lines, flushing lines, imo lines, blower & vent lines, gas indicator lines and pvc lines per meter , renewal of defective pipe lines per system - pipe lines including overboard discharge lines, flushing lines, imo lines, blower & vent lines, gas indicator lines and pvc lines per meter , repair/reconditioning of blower with motor , repair/reconditioning of air ejector , repair/renewal of float sensors/level switches and functionality checks , remote control switches in dchq pertaining to stp plant to be made operational , overhauling/functionality checks of electrical control panel and repair any defects on electrical panel , repair/renewal of electrical cables and accessories including earthing , cleaning / repairs of orifice, filters and strainers per plant , repair/overhaul of pressure reducing valves fitted in firemain for inflow to the system , repair/overhaul of solenoid valves , repair and serviceability checks of transformer unit , endurance test and effluent test of samples of stp for bod and tss on completion of major repairs, as proposed by ships staff/once in a year , rewinding of macerator, obd and blower motor , renewal of macerator shaft , overhaul of blower motor inclusive of non standard spares , visit at okha , visit at porbander , visit at kochin , visit at karwar