Annual Rate Contract for repairing of Boiler Tube Leakage under jurisdiction of B and A department for Units1 and 2, BTPS, WBPDCL

Amount

ECONOMISER TUBE JOINT (tube OD 51 mm, Thickness 4.8 mm, Material: SA 210 GR.C or equivalent)

JOINT AT FURNACE WALL, GOOSE NECK S-PANNEL & ROOF TUBE (Tube OD: 63.5 mm TO 69.9 mm,Thickness From 5.1 to 6.3 mm, Material: SA 210 GR. A or equivalent)

JOINT AT SATURATED SCREEN, ROOF & SIDE WALL, SCREEN TUBE, PRIMARY SUPERHEATER TUBE, SECONDARY SUPERHEATER TUBE. (OD: 63.5 mm, Thickness: 5 mm upto 6.9 mm, Material: SA213T11 OR EQUIVALNT)

JOINT AT REHEATER TUBE Tube OD: 50 mm to 60 mm, Thk: 3.35 mm to 6 mm, Material: SA 213 T22 or equivalent)

D-metering of boiler tube at any area of boiler for thickness measurement.

Radiography

Vertical scaffolding for approaching Roof Tube/ Wall Reheater/ MRH/ Platen/ Division panel (Per 6 Meter Vertical)

Horizontal scaffolding for approaching Platen SH/ Divisional wall/ SCW/ Roof Tubes/ Furnace (Per 6 Meter horizontal)

Second pass scaffolding

Removal, Fabrication and Fitting of Guard Tube and Guard Plate.

Build up in eroded Tubes as per requirement.

Economiser coil lifting , repairing,fitting & jointing with proper alignment for unit 1 & 2 (if required for preventive checking beyond leakage area)

Primary & secondary superheater coil pulling, inspection and proper alignment of coil & panel with clit and support welding of unit 1 & 2 (if checking required for preventive inspection).

Replacement of high pressure valve size 4"

Replacement of high pressure valve size upto 2".

Replacement of high pressure line (1/2" to 4")

Assistance in boiler hydraulic test

Deinsulation and insulation of wall,casing and pipe and other area of boiler.

Repairing of skin casing

Fabrication of bends of any degree of any boiler tube.

Fitting and welding of tube attachment wherever required.

HP valve gland packing replacement upto 6"

HP valve servicing including gland packing & bonnet seal replacement upto 4"

HP valve servicing including gland packing & bonnet seal replacement from 4" to 6 "

Minimum mobilization charge (if total executed job value less than Rs.15000/- )

Membrane strip fabrication, fitting and welding

Stress relieving

Removal & Refitting of refractory

GST (if any)