TTPS Operation Circle CAD Fabrication and erection of patch plate in bottom side of 2374 mm dia Cooling Water Pump main discharge header pipe of Unit II

Amount

Charges for fabrication of M.S Ring flange as per dimensions of OD – 2765 mm, ID – 2374 mm, Thickness – 50 mm, PCD – 2630 mm, Dia. of the hole – 32 mm & No. of holes – 80 Nos by welding and jointing the plate of size 1500 x 2785 and 1285 x 2785 mm as per drawing by arc welding and cutting the 2374 mm dia ring flange by gas cutting in the joining plate and drilling of 80 nos of 32 mm dia hole at PCD 2630 mm in M.S plate of thickness 50 mm including Cost of consumables like cutting gas and hire charges for T & P's etc.,

Charges for fabrication of M.S Dummy as per dimensions of OD - 2765 mm, Thickness - 50 mm, PCD - 2630 mm, Dia. of the hole - 32 mm & No. of holes - 80 Nos by welding and jointing the the plate of size 1500 x 2785 and 1285 x 2785 mm as per drawing by arc welding and cutting the 2765 mm outer dia of dummy by gas cutting in the joining plate and drilling of 80 nos of 32 mm dia hole at PCD 2630 mm in M.S plate of thickness 50 mm including Cost of consumables like cutting gas and hire charges for T & P's etc.,

Charges for removing the worn out cement gunitting from bottom portion of 2374 mm dia C.W.P main header pipe of Unit - II. Cutting the required patch plate of size 1250 x 1250 mm (24 Nos) from M.S rolled pipe of dia 2374 mm and grinding the edges of cut portion and positioning the plate exactly and supporting provided and taking V - groove in patch plate and welding the patch plate in bottom portion of C.W.P main discharge header pipe (after welding the patch plate cement gunitting and epoxy work will done) Total length of patch plate - 30 mtrs, Quantity of patch plate - 24 Nos of size 1250 mm x 1250 mm x 12 mm thick.

Chipping and removing the deteriorated damaged concrete surface of RCC structures including all foreign materials and leaving behind only firm and solid concrete including cleaning with water, removing the loose rust deteriorated on the reinforcement by brushing and sand blasting or hydro blasting at a pressure not exceeding 7Kg/cm2., cleaning with jet air etc. including all labours, tool equipments, staging propping etc complete as directed by the Engineer at site.

Charges for cleaning the inside surface of 2374 mm dia M.S pipe by brushing and sand blasting or hydro blasting at a pressure not exceeding 7 Kg/cm2., cleaning with jet air etc. including all labours, tool equipments, staging propping etc complete as directed by the Engineer at site.,

Painting one coat of nitozinc or equivalent primer after thoroughly cleaning the rust in the reinforcement rate including of all materials, labour, lead, lift etc., complete.

Supplying, cutting, bending and tying in position secondary reinforcement wherever necessary using GI weld mesh of size 50 x 50 x 3 mm to tie the existing concrete surface prepared as per specification including cost of all labour, materials, tools and transporting placing in position etc., complete as directed by the site engineer.

Guniting the prepared concrete surface at an average thickness of 50mm in two layers of 25 mm each using OP/PP cement and sand 1:3 by volume as per ISI 9082/1978 using guniting equipment the mixture being ejected and shot in to the surface by means of compressed air including treating the existing concrete surface before guniting with watering and applying cement slurry with supplying of all materials, labour lead, lift, T & P, staging, transport etc complete.

Charges for providing one initial protective epoxy coatings on cleaned inner surface of the pipe, including cost of all materials, consumables and other charges.

Charges for providing epoxite epoxy screeding in epoxy mortor of 10 mm thick using Quartz sand over the inner surface of discharge pipe to avoid further corrosion and erosion of pipe including cost of all materials, consumables and other charges etc.,

Charges for applying two coats of epoxite epoxy final seal coatings over the screedings using with epoxy resin and hardener, including cost of materials and other charges.

Material cost on contractor scope : M.S. Dummy for 2374 mm main discharge header pipe of Unit – II

Material cost on contractor scope : M.S. Flange for 2374 mm main discharge header pipe of Unit – II.

Material cost on contractor scope : M.S. Rolled pipe of 2374 mm dia and thick 12 mm for Cooling Water Pump main discharge header pipe of Unit-II. (Material : Mild Steel) (P. O. No : 11818-M, Dt.17.05.2023)

Material cost on contractor scope : M 32 x 140 mm M.S. Bolt and Nut for Cooling Water Pump main discharge header pipe of Unit – II.

BHARATHI ENTERPRISES