Mechanical repairs to be carried out for 3 stage 5 cusecs Bowl Pump assembly of WPIL make extracted from unit no 3 at New V T Station for WSS Doodganga

Amount

Mechanical repairs to be carried out for 3-stage, 5 cusec Bowl/pump assembly of WPIL make extracted from unit No 3rd at New V.T Station for WSS Doodhganga.

Loading of the damaged bowl /pump assembly already extracted from unit no 3rd in a Private load carrier and shifting to the private workshop for carrying out necessary repairs with all leads and lifts thereof included. Disassembling of the Bowl /pump assembly in a private Workshop involving dismantling 3 stages of bowl /pump casing /stages followed by extraction of impellers from housings, damaged/broken / worn-out sleeves, wearing rings, collets , bearing bushes etc from all the stages of bowl/pump assembly including worn out bowl/pump shaft using skilled personal, tools and tackles required for the Job.

Providing, Fabrication, and fitting of New Stainless Steel bowl /pump shaft as per existing sample preferably of SS 410 having OD=55 mm Length= 1.98 meters. The Shaft has to be precisely machined at various required segments to accommodate Impellers’, impellers lock Collets, bearing bushes etc using skilled labour, tools and tackles, high speed cutting tool to achieve the required parameters. The Job includes making of impeller seats for fitment of SS impellers at required position of the shaft. The job also includes fabrication of threads 60 mm in length from upper side of the shaft for fixing of Sleeve after reducing the upper portion to 42 mm dia for 200 mm length. Finishing of the shaft to size for proper fit in three stages of the bowl assembly by way of cutting, turning and finishing processes. Checking of alignment of shaft on the lathe for proper fitment in the bowl housing/stages by way of cutting, turning and finishing process of machining.

Repairs to Inter bowl stages/ housings of bowl /pump assembly by way of turning, cutting, finishing and grinding process of machining on the lathe for proper, easy and smooth fitment of wear-rings/neck-rings in it as per requirement for making proper surface to accommodate impeller and wear rings inside it.

Removal of damaged /worn out/broken Hexagonal Head cap screws [14 in no’s] out of total 48 No’s in the inter bowl /pump stage by way of welding the stem of damaged Hexagonal Head cap screws inside inter bowl stage with M.S bolt for unscrewing of these screws from the threads of the inter bowl stage using skilled labour, tools and tackles as required for positioning of the stages to carry out this precision job .The job then includes reaming of the damaged threads in the inter bowl stages using reaming tool and then making of new threads using reamer machine for proper fitment of newly fabricated /procured Hexagonal Head cap screws [14 in Nos’] in the developed threads in the inter bowl stages.

Providing, Fabrication and fitting of Cast Iron SEAL RINGS as per sample /requirement preferably having ID= 200 mm and OD= 212 mm and width of 50 mm fabricated / casted out of Cast iron along with making of Seat and collar for fitment in inter bowl stages and on impeller shoulders respectively by way of using cutting, turning and finishing processes of machining. The job involves engagement of skilled labour, precise tools and tackles as required for carrying out the job.

Providing, Fabrication, and fitting of G.M CUTLESS BEARING bush including [Rubber Stabilizer bush as per required size] inside it as per requirement preferably of dimensions ID= 55 mm, OD= 75 mm and length 65 mm to be press fitted inside three no intermediate/inter bowl parts/stages fabricated and casted out of suitable hallow casted G.M bar by way of cutting, turning, finishing process of machining after extraction / cutting of worn out bushes if any by way of engaging skilled labour, tools and tackles required for this precise Job.

Providing, Fabrication, and fitting of G.M CUTLESS BEARING bush including [Rubber Stabilizer bush as per required size] inside it of dimensions ID= 55 mm, OD= 75 mm and length 205 mm to be press fitted inside bottom end of upper inter bowl part/stage fabricated out of suitable hollow casted G.M bar by way of cutting, turning, finishing process of machining after extraction / cutting of worn out sleeves by way of engaging skilled labour, tools and tackles required for this precise Job.

Providing, Fabrication, and fitting of G.M CUTLESS BEARING Sleeve/bush including [Rubber Stabilizer bush as per required size] inside it as per requirement preferably of dimensions ID= 55 mm, OD= 80mm and length 215 mm to be press fitted in Suction Bell/ mouth assembly part fabricated out of suitable hollow casted G.M bar by way of cutting, turning, finishing process of machining after extraction / cutting of worn out sleeves by way of engaging skilled labour, tools and tackles required for this precise Job.

Providing Fabrication, and fitting of G M SCREW BEARING bush/sleeve as per requirement preferably having ID= 55 mm, OD= 90 mm, and 150 mm long to be press fitted inside upper end of upper inter bowl part/stage of fully threaded outer side; fabricated out of suitable hallow casted G.M bar by way of cutting, turning, finishing process of machining including making of threads to outer portion of the screw bushes as per requirement after extraction / cutting of worn out bush sleeves by way of engaging skilled labour, tools and tackles required for this precise Job.

Providing, Fabrication and fitting of MS Socket internally threaded in anti clock wise direction inside at upper end of upper inter bowl part/stage assembly for accommodating SCREW BEARING bush/sleeve at rear upper end of upper inter bowl part/stage assembly.

Providing ,Fabrication, and fitting of Stainless Steel frustum type Impeller LOCK COLLET as per requirement preferably of length 80 mm having ID= 55 mm and OD=68 mm respectively fabricated out of suitable Solid SS round cylindrical bar by way of turning, cutting, finishing and grinding process of machining . The job involves Cutting of impeller LOCK COLLET around slanted portion to be press fitted for locking the impellers on bowl shaft by way of engaging skilled labour, tools and tackles required for this precise Job.

Repairs to damaged/broken Suction bell using C I welding electrodes besides Providing, Fabrication and fitting of M S ring /Flange of thickness 12mm having outer dia 400mm and inner dia 300mm/as per sample to hold the welded halves of the suction bell with prior hole drilled on the M S ring to match in line with holes of the suction bell flange.

Shifting of the repaired assembled bowl /pump assembly back to site in a private load carrier/suitable Van from worksite/workshop. Assembling it with column pipes, line shafts, discharge head, intermediate stool, including providing and fitting of nuts and bolts of assorted size if required for fitment with VHS motor followed by Connecting it with 3 Phase AC supply and finally testing on full load at site.

M/S GERMAN MECH ELECTRO ENGG

M/S FAROOQ AHMAD MECHINICAL WORKS