Emergent Mechanical repairs work to be carried out for 3 stage ,5 cusecs Bowl/Pump Assembly of WPIL make with allied works extracted from Unit No 1 ( Army line) at New V T Station adjacent to Horizontal station-II for WSS Doodganga

Amount

3-stage, 5 cusec Bowl/Pump Assembly of WPIL make

Loading of the damaged bowl /pump assembly already extracted from unit no 1st [Army Line] 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 of SS 410 having OD=55 mm Length= 2.0 meters (approx). The Shaft has been 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 65 mm in length from upper side of the shaft for fixing of Sleeve after reducing the upper portion to 42 mm dia for 350 mm length/as per sample. The job includes finishing of the shaft to size for proper fit in three stages of the bowl assembly by way of cutting, turning and finishing processes. The job also includes 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.

Providing, fabrication and fitting of Gun Metal SEAL RINGS as per sample /requirement having ID= 200 mm and OD= 212 mm and width of 50 mm fabricated / casted out of GM bar 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 of dimensions ID= 55 mm, OD= 75 mm and length 75 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 of dimensions ID= 55 mm, OD= 80mm and length 210 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 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 Stainless Steel frustum type Impeller LOCK COLLET as per requirement of length 90 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.

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 motor followed by Connecting it with 3 Phase AC supply and finally testing on full load at site

Transmission System

Repairs to existing damaged SS Head Shaft as per sample having outer Dia=3.7 inch and length=1.83 metres (approx), threaded on both sides with threaded portion on bottom side upto a length of 50 mm and threaded portions on upper side in two segments with one segment upto a length of 125 mm with a key way of size 1 cm width and 6.5 inch in length and other segment upto length of 100 mm with key way of size 1 cm width and 3 inch in length. The job includes repairs to a portion of Head Shaft at height of 40 inch from bottom side by way of welding to form a uniform surface at the worn out portion. Checking of alignment of Head shaft on the lathe for proper fitment in the Gland box, ratchet assembly and pump coupling by way of cutting, turning and finishing processes of machining.

Repairs to existing available damaged Tube tensional Nipple [TT Nipple] as per sample having ID=54 mm ,OD=73 mm and overall length of 1169 mm with damaged/worn out threaded portion upto a length of 115mm , having external threads on top end and internal threads on bottom end. The job includes providing, fitting /welding of new MS Tube on upper end after cutting of the damaged/worn out portion of the existing TT Nipple as per dia required and having a length of 300 mm, followed by making of external threads by way of cutting, turning and finishing processes of machining and checking it for proper alignment. The job also includes repairs to Gland box by way of rethreading inner side for accommodating/fitting of tube tensional nipple upto the required mark.

Providing fabrication, and fitting of intermediate GM Screw bearing bushes as per sample / having ID= 50 mm, OD= 65 mm, and 120 mm length (approx) fully threaded from outer side to be fabricated out of suitable hallow casted G.M bar by way of cutting, turning, finishing process of machining as per requirement after extraction / cutting of worn out screw bearing by way of engaging skilled labour, tools and tackles required for this precise Job.

Providing, Fabrication, and fitting of New [Standby] Stainless Steel Head shaft as per existing sample preferably of SS 410 having OD=44mm, Length= 1.8 meters (approx). The Shaft has to be precisely machined, threaded on both sides with threaded portion on bottom side upto a length of 50 mm and threaded portion on upper side in two segments with one segment upto a length of 125 mm with a key way of size 1 cm width and 6.5 inch in length and other segment upto length of 100 mm with key way of size 1 cm width and 3 inch in length. The job includes checking of alignment of Head shaft on the lathe for proper fitment in the Gland box, ratchet assembly and pump coupling by way of cutting, turning and finishing processes of machining using skilled labour, tools and tackles, high speed cutting tool to achieve the required parameters.

M/S GERMAN MECH ELECTRO ENGG