Renovation and Repair Work of the Central Air-conditioning Plant at MCF, Chakgaria

Dismantling of butterfly valves installed in MS pipelines across the chiller, chilled water pumps and hot water generator etc. including thorough removal of nitrile rubber insulation, adhesive etc. Cleaning the site properly after carrying the valve at MCF, scrapyard, for the following sizes of Valve. a) 4” butterfly valve: 12 nos. b) 6” butterfly valve: 7 nos. c) 8” butterfly valve: 19 nos. Details as per WS-5

Installation of following Plug valves in MS pipelines across the chillers, chilled water pumps and hot water generator etc. with all necessary fitting using SS-304 Nut- bolts- washers, gasket etc. as required for the job including necessary cutting welding as per site requirement. Details as per WS-5 a) 4” Plug valve: 12 nos. b) 6” Plug valve: 7 nos. c) 8” Plug valve: 19 nos. Only Plug valves will be provided from the department.

Fabrication of MS Pipeline for connecting the valves flanges confirming standard IS3589 including cutting, welding, fixing of pipelines, all kind of fittings, reducer etc. required for installation as per site suited condition as per below. 200NB MS pipe: 11meter 150NB MS Pipe: 2.5meter 200 NB MS Pipe: 7.5meter

Dismantling of old installed purging valves & MS fittings for purging cocks (12 mm) and replacement with 12 mm SS 304 ball valves confirming Class 150, B.S 5351 or equivalent Indian Standard including all kinds of SS fittings (SS 304 Nipple) required for installation. Purging points will be provided in the supply and return lines of chillers. All kind of installation will be as per site suited condition and as directed by Engineering –in-charge. All kind of materials like valves, fittings including cutting, fixing and welding as required for the job will be under the scope of bidder. Details as per WS-5

Dismantling of old installed MS fittings for Pressure Gauges. Supply and installation of SS-304 U-trap with 12 mm SS 304 ball valves confirming, Class 150, B.S 5351 or equivalent Indian Standard including all kinds of SS fittings (SS Nipple) fittings required for installation of pressure gauges with of cutting, fixing and welding as required for the job will be under the scope of bidder. All kind of installation will be as per site suited condition and as directed by Engineering –in-charge. Details as per WS-5

Dismantling of old installed MS fitting for sensors points. Supply and installation of sensor points with heavy duty 12 mm SS 304 ball valves confirming B.S 5351 or equivalent Indian Standard including all kinds of fittings SS fittings (SS Nipple) required for installation as per site suited condition with cutting, fixing and welding as required for the job. Details as per WS-5

Supply and installation of 25 mm SS304 ball valves with required fittings for drain lines. Ball valve confirming to BS 5351, Class 150. Bidder will remove old installed MS fitting for Drain point and same will be replace with required SS fittings and valves. Also includes all types of cutting, fixing and welding as required for the job. Details as per WS-5

Dismantle the Rubber Expansion Joints, Globe Valves, Non return valve, Y strainer, Motorized valve and removal of rusted MS Nut-Bolts. Re-installation of the same using SS 304 Nut- bolts and washers including replacement of old gasket with suitable new one, installed across the equipment as listed below: i. 4” Rubber Expansion Joints – 6 Nos ii. 6” Rubber Expansion Joints – 8 Nos iii. 8” Rubber Expansion Joints – 16 Nos iv. 4” Non Return Valve – 3 Nos v. 6” Non Return Valve – 8 Nos vi. 4” Y Strainer -- 3Nos vii. 8” Y Strainer -- 8 Nos viii. 8” Globe Valve - 4 Nos ix. 8” Motorized Valve - 4 Nos Details as per WS-5

Supply and installation of 3 way mixing valves after dismantling the old two way mixing valve in 50 mm chilled water line across the AHUs, including all kinds of fittings MS pipe required for the job. Also includes all kind of cutting, fixing and welding etc. as per job requirement. Details as per WS-5.