NIT No. 06 (24-25) Item No. 5

Safety equipments & scaffolding have to be arranged for the workers as the work has to be done upto the height of Non-Return Valve from the ground level. The same includes loading, unloading & cartage charges etc.

Repairing of Upadhaya Make Delivery Non return Valve of size 400 mm Dia (1 No of Pump set No 2) installed at Zafrabad SPS. Cutting of nut bolts of delivery line bend, reducer & non return valve of both end Flange with the help of gas cutter & taking out the specials from the delivery line one by one like reducer, bend from the line & finally NRV from the delivery line & putting them on safer Place in the pump house. Fixing of blank flange on both side of delivery line by providing of nut bolts & rubber packing sheet.

Lifting of complete Non return valve with the help of H.O.T/E.O.T crane, heavy manual labour arrangement & loading in the tempo for taking it to workshop for servicing & renovation purpose including unloading in the workshop & cartage for the same.

Cutting and opening of all nut bolts of N.R.V body cover plate. Lifting of body cover with the help of Tri pod chain block arrangement & manual labour arrangement. Taking out complete Disc & Shaft from the N.R.V body by lifting with the help of Tri pod chain block arrangement & manual labour arrangement. Cleaning of body seat ring of N.R.V from inside by chemical solution and polishing by manual arrangement. Cleaning of disc retaining seat ring by chemical solution, emery paper etc. and polishing as required.

Making of damaged collar seat in the NRV body of one side block for resting of disc holding shaft block. The job includes grinding, machining and special C.I welding as required to make a proper size.

Renovation of disc holding blocks by fixing of new bushes in the bore as per the size of NRV shaft. The job includes removing of worn out seat & making of proper size & fixing of new bushes.

Supply of cover bolts & seat. (IS: 1367 Class 4.6/4.0)

Supply of Gasket. (Rubber IS: 638 Type-B)

Supply of bushes (GM IS: 318 LTB -2)

Supply of cover plug

Fixing of complete disc with arm in N.R.V body by proper matching of both the seat rings of body & disc, fixing of body cover with the help of Tripod chain block arrangement & manual labour arrangement etc. after replacing of rubber gasket & damaged cover bolts & tightening of nut bolts with spanner etc. as required by job. Taking out blank flange from both ends & fixing of N.R.V & other specials of delivery line with the help of HOT/EOT crane lifting arrangement etc. after replacing of rubber gasket & damaged nut bolts & tightening of nut bolts with spanner etc. as required by job.

Loading of complete N.R.V in the tempo from the workshop to the site & unloading the same from the tempo with the help of H.O.T/E.O.T crane & manual labour arrangement including cartage charges.

Safety equipments & scaffolding have to be arranged for the workers as the work has to be done upto the height of Non Return Valve from the ground level. The same includes loading, unloading & cartage charges etc.

Repairing of Upadhaya Make Delivery Non return Valve of size 500 mm Dia (2 Nos. of set no 1 & 5)- multi door installed at Zafrabad SPS. Cutting of nut bolts of delivery line bend, reducer & Non return valve of both end Flange with the help of gas cutter & taking out the specials from the delivery line one by one like reducer, bend from the line & finally NRV from the delivery line & Putting them on safer Place in the pump house. Fixing of blank flange on both side of delivery line by providing of nut bolts & rubber packing sheet.

Lifting of complete Non return valve with the help of H.O.T/E.O.T crane, heavy manual labour arrangement & loading in the tempo for taking it to workshop for servicing & renovation purpose including unloading in the workshop & cartage for the same.

Cutting and opening of all nut bolts of N.R.V centre plate for removing of C.I diaphragm centre plate from the NRV with the help of Tri pod chain block arrangement & manual labour arrangement. Taking out complete Disc & Shaft from the diaphragm centre plate by lifting with the help of Tri pod chain block arrangement & manual labour arrangement. Cleaning of body seat ring of diaphragm centre plate by chemical solution and polishing by manual arrangement. Cleaning of disc retaining seat ring by chemical solution, emery paper etc. and polishing as required.

Renovation of NRV disc by fixing of new bushes in the damaged hole size. The job includes removing of worn out seat & making of proper size & machining of new bushes as per the required size and fixing the same for smooth functioning.

Renovation of disc holding blocks on the diaphragm centre plate by fixing of new bushes in the bore as per the size of NRV shaft. The job includes removing of worn out seat & making of proper size & fixing of new bushes.

Supply of Gasket. (Rubber IS : 638 Type-B)

Supply of bushes (GM IS: 318 LTB -2)

Supply of disc holding shaft (SS 410)

Fixing of complete disc in diaphragm centre plate by proper matching of both the seat rings of body & disc , Fixing of diphragm centre plate in the NRV body with the help of Tri pod chain block arrangement & manual labour arrangement etc after replacing of rubber gasket & damaged cover bolts & tightening of nut bolts with spanner etc. as required by job. Taking out blank flange from both ends & fixing of N.R.V & other specials of delivery line with the help of HOT/EOT crane lifting arrangement etc. after replacing of rubber gasket & damaged nut bolts & tightening of nut bolts with spanner etc. as required by job.

Loading of complete N.R.V in the tempo from the workshop to the site & unloading the same from the tempo with the help of H.O.T/E.O.T crane & manual labour arrangement including cartage charges.

Premier Engineering Company (BID ID -1564241)