Offline water washing of GT compressor and attending of cross fire tube leakages, including material cost

Amount

SPIRAGET SS 304 Spiral Wound EXPANDED GRAPHITE Filled Gasket with CARBON STEEL Inner Ring & SS304 Outer Ring as per ASME B 16.20

1" X 150 LBS Gsk Thk : 4.5 mm Ring Thk :3.2 mm

1" X 300 LBS Gsk Thk : 4.5 mm Ring Thk :3.2 mm

1.25" X 300 LBS Gsk Thk : 4.5 mm Ring Thk :3.2 mm

4" X 150 LBS Gsk Thk : 4.5 mm Ring Thk :3.2 mm

4" X 300 LBS Gsk Thk : 4.5 mm Ring Thk :3.2 mm

6" X 150 LBS Gsk Thk : 4.5 mm Ring Thk :3.2 mm

TVS /UNBRAKO make High Tensile Bolt, Nut & washers- Grade 12.9 (1Set consisting of 1No. Bolt, 1No. Nut & 2Nos. Washer)

M16 x 75mm - Half Thread

M16 x 90mm - Half Thread

M18 X 95 - Half Thread

Full thread Stud Bolt (SA 193-B7) with 2 Nos. suitable Nut (SA 194-2H) & 2Nos. Washer (F436)

I. Offline water wash of GT Compressor

Preparation: Charges for Filling of DM water in the water wash skid tank, checking the oil level in the water wash pump, filling the soap solution for the washing in the soap solution tank, heating of the water to about 80ºC. Test running water wash pump, attending any leakages and preparations etc., as per the direction of Engineer in-charge

Inlet Plenum Cleaning: Charges for Disassembling of man hole cover, inspection of spray nozzles, arrangement of water hoses, complete cleaning of the inlet plenum with detergent to remove dust particles, flushing with water, proper draining, cleaning with khada cloth, assembling the manhole cover with new gasket and normalizing as per the direction of Engineer in-charge

Disassembly of pipe line flanges, provision of Dummy and GT Off-line water washing: Charges for Disassembly of Flanges inside GT compartment at various specified location of pipings, and providing dummies at all these locations and assembling of flanges with dummies, operation of various valves to carry out off-line water washing, assisting of off-line water washing and attending leakages if any during off-line water wash etc., as directed by the Engineer in-charge

Assembling: Charges for Removal of dummies already provided, assembling flanges with new gaskets, removal of accumulated water from GT compartment, Removal of foreign materials, housekeeping inside GT Compartment as directed by the Engineer in-charge

Normalizing: Charges for Keep all the valves, isolations to the original status where the GT was previously set in before water washing, Observation and attending leakages during GT start up for ensuring leak proof operation of GT following Off-line water washing

II. Attending of Cross Fire Tube Leakages

Charges for Disassembly of GT Cross Fire Tube outer pipe Flanges of combustion cans, Inspection, Cleaning, renewal of pressure seal packing if found damaged (Packing will be supplied by TANGEDCO), assembly of flanges and normalizing as per the direction of Engineer in-charge

Tech and Mech Engineers and Erectors (BID ID -1131289)