Annual breakdown repairing, rewinding overhauling of pumping machinery DW-3 ( 45 KW) at CDDS main pumping station, Bangur under Eastern Mechanical Division, P.H. Engineering Dte. 24-Pgs (N) Pump Type AMAREX KRTK, UNGI-D-45 KW

Amount

Inspection at site to check the pumping machinery thoroughly to detect the defect by engaging skilled / unskilled labours as per direction.

Withdrawing of the above said pumping machinery from volute casing by necessary hoisting arrangement after disconnection of all electrical connecions and mechanical portion including pipe line (suction & delivery) by engagaging of skilled labours as per direction of EIC.

Carrying and transportation the pumping machinery from Bangur to Workshop for repairing including loading and unloading.

Dismantling the pumping machinery part by part through cleaning and segregation of serviceable to unserviceable parts for repairing as per direction of EIC.

Supply & delivery of following items.

Single row angular contact Ball Bearing Model No: 7220 BECBM [Make: SKF/ Appd. Make]

Single row cylindrical Roller Bearing Model No: 2209 ETN9 [Make : SKF/Appd. Make]

Mechanical Seal. (As per sample, 90 mm. dia)

Mechanical Seal. (As per sample, 78 mm. dia)

Oil seal ( SKF,VITON)

Grease (Make: SKF/Appd.) (High Temperature registive)

16 mm dia & 100 mm long (SS) nut, bolt, washer.

16 mm dia & 75 mm long (SS) Alen bolt with washer.

Impeller top plate Viton Cover (Dia: 26")

Oil & high temperature registive packing for pump mounting..

"O" Ring (16" dia, Nitrill)

"O" Ring (12" dia, Nitrill)

Coolant

Steel key

Heavy duty terminal box with socket.

Winding of stator with the help of insullated copper wire of requried gaudge (Make- Sramik) & configuration along with replacement of nomex paper further a good quality Dr. bake vernish dip & impregnation at requried heat chamber for 48hours then check for continuity and insulation 'F' lable from stator to body as per direction of E.I.C.

Dismantling the main shaft from Rotor with the help of Hydraulic press as per direction of E.I.C.

Making of new P/M shaft with following specification: a) Shaft length- 1030 m.m b) Shaft dia - 128 m.m c) Material- EN 31 STEEL. d) Hardness- 45-50 RC e) Facing, Turning, Polishing, key way cutting , drill and tapping.

Repairing of impeller bore by machining and new key way cutting later on as per direction of E.I.C.

Fitting fixing of main shaft with rotor with the help of hydraulic press and the cost including balancing the impeller fitted with main shaft at the works shop with loading unloading complete as per direction of E.I.C.

Reassemble of the above mentioned P/M set by supplied spares [Item No. 5( a-i)] along with old serviceable spares by Balancing and maintaing of proper alignment of the pump shaft as per direction of EIC.

Cost of Anticrrosive treatement by painting of above mentioned P/M set to regist corrosion of the outer surface of the P/M set.

Making lead jointing with necessary PVC insulated copper bunched wire as per direction.

Carrying the pumping machinery from workshop to Bangur after repairing including loading & unloading complete.

Lowering the above pumping machinery with necessary lowering arrangement with proper alignment including reconnection of electrical & mechanical connections wth pipe line . The cost including cleaning of debris at volute by manual labour as per direction.

Testing the pump & motor set as trial run for 10 continious hrs for three days as per direction of E.I.C

CONCORD ENGINEERING (BID ID -6694993)

MENAKA ENTERPRISE (BID ID -6694969)