NCTPS I SE MI circle Turbine Maintenance Division Annual Overhaul works for the year 24 25 Specification No 124 24 25

Amount

Renewal of 300 NB sea water line bend: Dismantling the worn out & damaged 300 NB bend, fabrication of new bend suitable for pump, erection of newly fabricated bend including rubber gasket with support. Including consumables and T&P's. (1.5 mtr x 5 Nos) (300 NB Pipe will be supplied by TANGEDCO at free of cost )

Renewal of 450 NB sea water line bend: Renewal of 450 NB sea water line bend /pipe. Charges for dismantling, fabrication of new 450 NB bend/pipe in SWBP-1A - 2 Nos, 1B, 1C, 1D, 3B -1 No (each pump), & 3D - 2 Nos for sea water pipe line (works involved cutting, fitting) and re-erection including consumables and T&P’s. (450 NB Pipe will be supplied by TANGEDCO at free of cost)

Renewal of 450 NB delivery line spool pipe in SWBP-1C & 3C: Charges for dismantling, fabrication of new 450 NB delivery line spool pipe (works involved cutting, fitting) and re-erection of 450 NB delivery line spool pipe in SWBP including consumables and T&P's. (3 mtrx1 No) (450 NB Pipe will be supplied by TANGEDCO at free of cost)

Dismantling of 450x400x300 NB wornout reducer pipe in SWBP (1A-1No, 1B-2No, 1C-2No, 1D-1No, 3C-1No, 3D-1No), fabrication of new reducer pipe suitable for SWBP line, erection of newly fabricated reducer pipe after rubber lining including consumables and T&P's. (450 NB Pipe will be supplied by TANGEDCO at free of cost )

Charges for Renewal of 600 NB SCS spool pipe: Renewal of punctured 600 NB spool pipe, fabrication, rubber lining and erection of 600 NB spool pipe in between the 600 NB butterfly valve in self cleaning strainer 3A & 3B including consumables and T&P's. (600 NB Pipe will be supplied by TANGEDCO at free of cost )

Charges for Renewal of punctured 600 NB Sea water header lines: Charges for Dismantling, fabrication, rubber lining & erection of Sea water header lines from sea water inlet take up line to vacuum pump & SCS outlet header pipe line. In unit-III Sea water header lines near SCS Delivery line (3 mtr), near take up valve line (3 mtr) and Seawater header line take up lines bends -2 Nos in Unit-I including consumables and T&P's. (600 NB Pipe will be supplied by TANGEDCO at free of cost )

Renewal of punctured tunnel outlet 600 NB spool pipe, fabrication, rubber lining and erection of 600 NB spool pipe in between the 600 NB butterfly valve and 200 NB ball valves (600 NB Pipe will be supplied by TANGEDCO at free of cost) Including consumables and T&P's.

Renewal of 450 NB PHE (1B,1C, 3B & 3C) sea water inlet line .charges for dismantling, fabrication of new 450 NB pipe (works involved cutting, fitting) and re-erection of NB 450 sea water pipe inlet line in PHE including consumables and T&P's. (2.6 mtrs X 4 Nos) (450 NB Pipe will be supplied by TANGEDCO at free of cost )

Renewal of 450 NB PHE (1B- 1 mtrs, 3B-1 mtr, 3C-3.5 mtr & ACW-1B-1 Mtrs) sea water outlet line. Charges for dismantling, fabrication of new 450 NB pipe (involving cutting, fitting) and re-erection of NB 450 sea water pipe outlet line in PHE including consumables and T&P's. (450 NB Pipe will be supplied by TANGEDCO at free of cost)

Renewal of 450 NB PHE-ACW delivery line "S" type bend from the Plate heat exchanger - 1B & 3B .Dismantling the wornout 1No 450 NB PHE - ACW line 'S' type bend, fabrication of new bend, full welding, erection with proper support (4 mtrs x 1 No) (450 NB Pipe will be supplied by TANGEDCO at free of cost)

Charges for retrieval of 600 NB / 450 NB / 300 NB flanges from the released damaged pipe lines after reconditioning work carried out used in Sea water header line, SCS, SWBP, AWSP and PHE pipe lines including consumables and T&P's.

Charges for rubber lining of fabricated sea water pipe line in 300/450 NB in SWBP, SCS, PHE (Vulcanizing) including consumables.

M.ANBAZHAGAN (BID ID -1093206)

EZHIL ENTERPRISES (BID ID -1097074)