Urgent Mechanical Repairs i.e Arresting of leakage in the Delivery Manifold and replacement of Damaged RI Cloth Gaskets to the 400 mm Dia Reflux valve at WSS Tangnar Stage-2nd

Amount

Repairs to 800 mm ND Delivery manifold at inter-section of unit -1 and unit-4 by the way of: a. Dewatering the rising main by operating the washout valve. b. Dewatering of the whole manifold area by way of operating the requisite capacity Dewatering pump set so as to make the leaking spots accessible for carrying out the necessary repairs. c. Opening of inspection hole for ensuring access to the expert welder for carrying necessary repairs inside the pipe. d. Cleaning of leakage spots from both inside and outside. e. Welding of the two leakage spots, which is at the intersection of 400mm Dia Delivery pipe and 800mm Dia Rising main of Bay-1 & Bay-4 from inside and outside the pipe, in 02 runs in order to achieve the desired results. f. Re-fitting of the inspection flange cover after carrying-out the necessary repairs inside the pipe. Mobile workshop Vehicle with all necessary tools & tackles which includes DG-set along with electric cables, gas cutter, welding machine, joint cutter machine etc required for completion of job in all respects, is to be arranged and brought to the site by the executing agency and finally testing of the job on full load after carrying out the necessary repair works.

Replacement of damaged RI Cloth Gaskets to 400 mm Dia reflex Valve of Unit No. 02 of Delivery manifold by way of: i) Dismantling of the 400 mm Dia DI Reflex Valve by way of opening of all the nuts and bolts which may also entail cutting of 10 No's of stuck bolts with the help of cutter. All tools and required for the exection of the job shall have to be arranged by the firm. ii) Providing and fitting of 02 No's RI Cloth Gasket Sheet of 3 mm thickness. The Gasket Sheet shall have to be cut as per the size of the flanges as per requirement. iii) Providing of 10 No's M30-150 mm long High Tensile nuts and bolts with 02 washers each, conforming to IS 1364, ISO 4014/4017

M/S TAWSEEF ENTERPRISE