Preventive /Breakdown Maintenance work of Pressure Parts and Round the Clock Routine work of Boiler of Unit No. 3 4, 2x210 MW of BTPS, Parichha.

Amount

Round the clock routine and Preventive Maintenance work of Oil Gun/Coal Burner, Igniter guide pipes, Valves and other associated equipment, Scanner/cooling fans keeping watch on abnormal sound of Boiler first pass, second pass of pressure part, and checking of clinker of boiler unit No. 3&4 of 2X210MW Parichha. One job consists of 24 hrs.-03 shift of 08hrs each unit of 210MW)

Mobilization of team and T&P and attending tube leakages in various zone of boiler pressure parts. Attending the leakage up to 1st Ten weld joints (irrespective of number weld joints in one frequency) as per procedure mentioned in scope of work.

Attending tube leakages in various zone of boiler pressure parts if exceeds beyond 10 nos. of weld joint of Job no. 1 in addition to job no.1 including joint of carbon steel / T-11/ T-22 / T-91 / TPH 347 including all diameter tubes.

Attending leakage of hand hole plate of different pressure part header by removing hand hole plate with hand hole cutting equipment, re-welding of the same as per procedure.

Removal of damaged clamps/binders FLEXIBLE CONNECTORS etc. and replacement / refitting of the same with new/repaired one in different zones of pressure parts.

Fabrication of hot bends of Carbon Steel various degree and radius of curvature from straight pressure parts tubes by filling sand and heating by gas to required temperature of following materials.

Fabrication of hot bends of Alloy steel various degree and radius of curvature from straight pressure parts tubes by filling sand and heating by gas to required temperature of following materials.

Stitch welding of fins of water Wall / steam cool wall for securing respective position of tubes.

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

Rectification / replacement of ash protector found damaged / eroded / dislocated in different pressure part zone of boiler.

Lifting and taking out the complete Hanger of LTSH coil after cutting clamps, supports, clits, and stoppers and releasing from subsequent header and coil and their restoration after placement of coil.(One Hanger =02 Coils )

Lifting & Taking out the complete Hanger for economizer (lower/upper bank) after removing clamp pin & releasing from subsequent header and their restoration. (One job = One Bank)

Cleaning of Pent house & disposal of fly ash

Cleaning & Disposal of fly ash and foreign materials from cat house (L&R)

Cleaning & Disposal of fly ash and foreign material from dog house (L&R)

Thickness survey of Tubes for Different size (One Nos Means total no of 50 Points.)

Erection of Scaffolding (Plank Size 2.5x0.3 Mtr)

Replacement of shrouds of boiler tube of different size such as economizer, LTSH, SCW, screen tube and other tubes of boiler.

Repairing and reconditioning of cassette baffles of economizer and LTSH tubes of boilers.

Casting of refractory in goose neck/dog house/cat house 01Job = up to 01 Metric Ton (MT)

Rectification of Buckstay in first and scond pass of Boiler Pressure Part/Putting buck stay Pin on its Position of Corner No. 1,2,3,4

System line up for filling of fed water through Boiler feed pump for hydraulic test of Boiler normalization of the same after hydraulic test making the system ready for Boiler light-up in unit no 3 & 4 of 210MW PTPP Parichha

Removal of soot/ clinker from Water wall panel and other Pressure Part Area

Replacement of gasket of manhole of CBD tank

Repairing and strengthening of air vent buckets.

Repairing and reconditioning of inspection window and manholes.

Cleaning of drain bucket of steam drains.

SHAKSHI ENGINEERING CO.