T-03/OMC-VIII/BMD-V/PTPP/2X250 MW/ 2020-21

Amount

Attending tube leakages in water wall tube in boiler furnacefrom down comer/ring header to 50 meter including burner zone, Economiser tubes, LTSH, SCW, Reheater tubes, Arch Tubes, Screan tubes, Water wall hanger tubes, SH Hanger tubes, Final Superheater, Exit SH Tubes, Extended Water wall tubes, Ceiling Super heater tubes including platen super heater up-to Ist ten HP weld joints(irrespective of number HP weld joints in one frequency )

Attending tube leakage of each HP weld joints beyond 10 numbers of HP weld joints Including joint of carbon steel/T-11/T-22/T-91/TPH-347 including all diameter

Attending the leakages of hand hole plates of different pressure part header by removing hand hole plates with hand hole cutting equipment, rewelding of the same after complete preparations and stress relieving of the same after welding if required

Removal of damaged clamps/binders/scallop bars/flexible connectors etc. and replacement /refitting of the same with new/repaired one in different zones of the pressure parts.

Fabrication of hot bends of various degrees and radius of curvature from straight pressure parts tubes by filling sand and heating to required temperature of Carbon steel

Fabrication of hot bends of various degrees and radius of curvature from straight pressure parts tubes by filling sand and heating to required temperature of Alloy steel

Stitch welding of fines of water/ steam cool wall for securing of respective positions of tubes

Rectification /Replacement of ash Protector found damaged /eroded /dislocated in different pressure part zones

Replacement of eroded/damaged shrouds of boiler tubes of Economizer, LTSH, SCW, Screen tubes and other tubes of Boiler .

Repairing/ Reconditioning/ Replacement of eroded/damaged cassette baffles of Economizer and LTSH, tubes.

Erection of scaffolding and plateform in Economizer hopper (above)

Erection of scaffolding and plate form in S-Panel & bottom ash hopper

Erection of scaffolding and plate form in Reheater inlet & outlet

Erection of scaffolding and plate form in Water wall screen tube/ final super heater/ super heater screen tube

Erection of scaffolding and plate form in Platen super heater tube zone

Build up of eroded portion of the tubes caused by ash/ steam erosion using suitable welding electrodes matching with parent metal composition. Depth of erosion up to 2.5 mm, length of erosion up to 250mm

Lifting and taking out the complete coils in pair of LTSH horizontal coils (upper or lower) after cutting clamps supports ,clits, stoppers and releasing from subsequent headers and coil and their restoration after placement of coil

Lifting and taking out the complete coils of Economizer (upper or lower ) after cutting clamps supports clits, stoppers and releasing from subsequent headers and coil & their restoration after Placement of coil

Rectification of Buck Stay/Putting buck stay pin on its position in second pass of Boiler /comer No.1,2,3&4

Replacement of eroded/damaged tubes/bends of pressure parts in different zones of Boiler-Carbon/ low alloy (T-11) and (T-22) joint

Replacement of eroded/damaged tubes/bends of pressure parts in different zones of Boiler - Stainless Steel joint

Internal water washing of 2nd pass of boiler

Cleaning of economizer hopper & APH Hoppers

Cleaning & disposal of Fly ash foreign material from Dog House/Cat House

SHAKSHI ENGINEERING CO.

U.S.Enterprises