MTPS I BM Pressure parts Unit III Boiler Statutory inspection 2020 21 Water washing of boiler Ist and IInd pass area Rectification of defective boiler tubes overhauling of valves sky climber erection operation and allied works etc

Amount

Water washing of boiler inter-pass area (area inclusive of re-heater coils, water wall Screen tubes, S.H Screen tubes etc.), Water washing of boiler I pass water walls inclusive of gooseneck bends area through peepholes and Water washing of boiler II pass

Charges for leading, lifting of platform material arranging scaffolding and platform wherever required in the boiler area for rectification works, dismantling after completion of work and normalizing site.

Charges for renewal of defective boiler tubes of size 44.5mm OD inclusive of transportation, cutting of defective tubes, edge/spool preparation, welding with IBR welder and assisting for hydraulic test.

Charges for renewal of defective boiler tubes of size above 44.5mm OD inclusive of transportation, cutting of defective tubes, edge/spool preparation, welding with IBR welder and assisting for hydraulic test.

Charges for surface preparation and metal Filing by arc welding by IBR welder in the eroded Tubes & headers for a size of 25 x150 mm.

Charges for removal and refixing the insulation and skin casing sheets to carry out Boiler tubes & fin welding rectification works and reposition the dislodged /damaged insulation and skin casing sheet in Ist & IInd pass Wall tube of Boiler including the charges for transportation of insulation and skin casing sheets, consumables, T&P’s and for necessary scaffolding arrangements.

Charges for attending on defective / passing valves dismantling, inspection, lapping of valve seat and disc, renewal of sealing rings, gland packing etc., inspection of drive bush, bearings, etc. and renewing if necessary and assembling the valve & actuators. Main steam stop valve and 300/250 valve.

Charges for attending on defective / passing valves dismantling, inspection, lapping of valve seat and disc, renewal of sealing rings, gland packing etc., inspection of drive bush, bearings, etc. and renewing if necessary and assembling the valve & actuators Valve of sizes 150/250, 100/250 and 65/250

Charges for attending defective / passing safety valves of boiler drum/ steam line by dismantling, inspection, seat lapping, renewal of worn out parts etc.

Charges for fixing readymade shrouding at erosion prone Boiler tubes & bends by welding clamps including the cost of welding electrodes.

Charges for leading lifting of refractory at store and site, stacking at 7m to 52 m elevation of Boiler, chipping removal of cracked/ defective refractory, cleaning, surface preparation, refractory preparation and application on damages by patch work at various elevation of Boiler, removal of loose refractory, lowering, disposing to waste disposal area

Charges for transportation, erection of sky climbers and dismantling after completion of overhaul works.

Charges for operation of sky climbers as per the requirements to assist various overhauling works such as Boiler cleaning, burner overhaul, tube thickness survey, tube rectification works etc., during the entire overhaul period.