NCTPS I SE MI circle Turbine Maintenance Division Annual Overhaul works for the year 24 25 Specification No 161 24 25

Amount

Cutting the existing flange bolts of size M30 x 215 - 40 Nos by gas cutting from the b/f valve (debris filter side) including the cost of consumables and T&P's.

Cutting the existing flange bolts of size M30 x 215 - 40 Nos by gas cutting from the first spool pipe including the cost of consumables and T&P's.

Cutting the flange bolts of size M30 x 215 - 40 Nos by gas cutting from the second spool pipe including the cost of consumables and T&P's.

Removing the existing worn out bellow bolts, size M45 x 155 - 40 Nos which includes cutting the bolt head, drilling the hole throughout the bolt length for metal removal while gouging including the cost of consumables and T&P's.

Fabrication of 1600mm dia spool pipe including the cost of consumables and T&P's.

Charges for lifting, loading, transportation and unloading of (iron & steel material - 2MT), (bellow material and retaining rings - 2MT) from stores to site.

Lifting and positioning the fabricated spool pipe with flange and tack weld the prepared pipe including the cost of consumables and T&P's.

Complete welding of spool pipe with flange (Welding work for one running meter) including the cost of consumables and T&P's.

Cleaning the inner holes of flanges top and bottom side, inner holes of vertical flanges, top and bottom flanges and spring support seating area, preparation of gasket including the cost of consumables and T&P's.

Moving/ lifting the spool pipe -1 No at debris filter pit level aligning with the condenser inlet b/f valve flange hole and fixing including the cost of consumables and T&P's.

Moving/ lifting the 2nd spool pipe to debris filter pit level aligning with the bellow flange & debris filter flange hole and fixing including the cost of consumables and T&P's.

Positioning the bellow assembly along with retaining ring in between spool pipe flange including the cost of consumables and T&P's.

Checking the bellow width and flange distance and to be corrected by providing the shims between tie rod and East side flanges including the cost of consumables and T&P's.

Attending welding works in 1600 NB pipe line by M.S welding including cutting the plates, grinding, forming to required shape, preparing the welding surface and welding with lead time (1 patch is 150 mm x 150 mm x 8-10 mm thick) including the cost of consumables and T&P's.

FRP lining in condenser cooling water inlet spool pipe and flanges including the cost of FRP materials. a) Cleaning the exterior surface of the pipe & flange by sand blasting (1 No = 2.0 mtr) including the cost of consumables and T&P’s.

b) Providing FRP lining inside the pipe & flange (1 No = 2.0 mtr) including the cost of FRP Materials, consumables and T&P’s.

Providing new bolts in the top and bottom flange and tightening the same including the cost of consumables and T&P’s.

Cutting and removing the existing platform arrangements and repositioning it after completion of work.

EZHIL ENTERPRISES (BID ID -1138066)