NIT No. 22/EE(EM)M-10/(24-25)Item No-3

Supply of submersible pump set fitted with dynamically balanced SS impeller mounted on stainless steel shaft with protection sleeve having stage bowl & closed grained shorted type impeller, the pump will be directly coupled to required wet type induction motor of 7.5 HP,6 stage Speed 2900 RPM suitable for operation of 3 phase, 415 volt, 50 Hz, AC supply with efficiency 70% at following duty point: 450 LPM on 49 Mtr. Head. Having discharge outlet 50 mm and outside dia 142 mm. Make: BS/Skope/any DJB approved make.

Supply of 3 core X 4 sq. mm flat PVC insulated & PVC sheathed cable with plain copper conductor for Submersible Pump Motors 1100 Volt (100 mtr. each roll.) Make: Grandly / Havells/any DJB Approved make.

Supply of M.S. clamp of 600 mm length duly fabricated out of 12.5 mm thick 75 mm wide, M.S. plate for holding the pipe of 50 mm dia.

Supply of Double flange GI Column pipe 50 mm dia medium class each of 3 mtrs long duly threaded on both ends, welded fitted with GI flange on both ends with slot of submersible cable. Make: TATA/ Jindal.

Supply of Tail piece of the medium class GI Pipe 500 mm long with one end threaded as per outlet of pump & another end flanged as per size of GI pipe 50 mm dia.

Supply of GI 90° Bend of size 50 mm dia having both side flanges (heavy duty).

S/O nut & bolts of 1/2 “dia of different size i.e. 1.5” & 2.5” long full threaded.

Supply of rubber packing for 50 mm dia flange.

Supply of Bore cover approx, size 8” dia made outlet from 6 mm thick M.S. sheet in 2 halves & circular hole will be in centre of 2”-2 ½” dia with locking arrangement by nut bolts.

Supply of 50 mm dia non return valve design std. IS 5312 part I PN-1.0 having CI body bronze wedge rings SS spindle drilled flanged type as per IS 1538 table 4&6 with pressure rating class Make: Kirloskar/IVC/Any DJB Approved make

Earthing with G.I. earth pipe 4.5 meter long, 40 mm dia including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe etc. with charcoal/ coke and salt as required. (DSR E&M 2022) 5.2

Providing and fixing 6 SWG dia G.I. wire on surface or in recess for loop earthing as required. (DSR E&M 2022) 5.16

Installation & commissioning of submersible p/set with proper fitting of 50 mm dia double flange pipes, along with NRV and other items. Installation and commissioning of feeder pillar with proper Ground supporting arrangement including civil work. Testing the earthing with earth tester and providing the report duly verified by engineer in charge All tools & tackles & safely measures taken by contractors and testing the sub. P/set on no load/on load. Testing the earthing with earth tester and providing the report duly verified by engineer in charge