Mechanical repair works to be carried out to 3 Stage, 5 Cusec Bowl / Pump assembly of WIPL make along with transmission system (Standby Bowl assembly and transmission system) at New JACK WELL Station of WSS Doodhganga.

Amount

3 Stage, 5 Cusec Bowl Assembly

Loading of the damaged 3 Stage, 5 Cusec Bowl / Pump assembly along with transmission system (Stand bye) already extracted from unit No.2nd using private load carrier from site and shifting to the private workshop for necessary repair work with all leads and lifts thereof included. Dismantling the Bowl assembly at workshop, the job includes opening the studs of bowl joints and then dismantling of bowl casing / stages followed by extraction of its impellers from housing, damaged (worn out sleeves, wearing rings, collects, bearing bushes) etc. from the shaft to carry out necessary repairs / replacement works by way of using services of skilled Lathe workers including using of all tools and tackles required.

Removal of damaged / worn out/ broken studs / bolts in the upper bowl part / stage of bowl assembly by way of welding the stem of damaged studs /bolts inside bowl stage with M.S. bolt for unscrewing of these studs / bolts from the threads of the bowl stage using skilled labour, tools and tackles as required to carry out this precise job. Reaming of the damaged threads in the bowl stages using reaming tool and making of new threads for proper fitment of new studs / bolts (12 Nos) in the developed threads in the bowl stage.

Providing, fabrication and fitting New Stainless Steel 410 grade shaft of having OD=55 mm Length =1.98 Metes(approx.) / as per existing sample. The shaft has been made precisely machined at various required segments to accommodate impellers, impeller lock collets, bearing bushes etc. using skilled labour, tools and tackles, high-speed cutting tools / machineries to achieve required parameters. The job includes of making impeller seats for fitment of impeller at required position of the shaft. The also includes fabrication of threads 65 mm in length from upper side of the shaft for fixing of coupling Sleeve after reduction the upper portion to 42mm dai for 350 mm length/ as per sample. The job includes finishing of the shaft to size for proper fit in two stages of the Bowl assembly by way of cutting, turning and finishing process. The job 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.

Providing, fabrication and fitting of Gun Metal wearing RING having ID= 200mm and OD=212 mm width of 50mm / as per sample fabricated casted out of GM bar. The job includes making of seat and coller for fitment in bowl stages and on impeller shoulders respectively by way of using cutting turning and finishing processes of machining after extraction / cutting of worn-out bushes by way of Skilled labour, tools and tackles required for the precise job.

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

Providing, fabrication and fitting of G M Cutless Bearing Sleeve as per requirement of dimensions ID=52 mm, OD= 80 mm and length 200 mm to be press fitted in suction bell/ mouth assembly part fabricated out of suitable hollow casted GM 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 having ID=55 mm,OD = 90 mm and 150 mm long / as per sample fully threaded outer side to whole length and fabricated out of suitable hollow casted GM bar by way of cutting, turning, including making of threads of the screw bush / bearing as per requirement finishing process of machining after extraction / cutting of worn out screw bushes 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 sample having length 90mm., ID=55 mm and OD= 68mm, fabricated out of suitable solid SS round cylinder bar by way of turning, boring, cutting and finishing / machining process. The job involves cutting of impeller LOCK COLLET around slanted portion to be press fitted for locking the impeller on bowl shaft by way of engaging skilled labour, tools a and tackles required for this precise job.

Transmission System

Providing, fabrication and fitting New Stainless Steel Head shaft as per sample. The head shaft shall be of SS 410 grade SS having OD=43 mm Length = 1.8034mm Metes(approx.) / as per existing. The shaft has been precisely machined and threaded on both sides with a threaded portion on bottom side upto a length of 60mm and on upper side upto a length of 125mm. The shaft shall be provided with keyways of size 12mm in width and 6.5-inch length on one side and 3 inch long on other side. The job includes checking of alignment of shaft on the lathe for proper alignment and fitment.

Repairs to Gland box by way of providing, fabrication and fitting of cut less G.M bearing bush having OD= 73 mm, ID= 64 mm and length 100 mm/ as per sample to be press fitted inside the Gland box assembly at lower end fabricated out of suitable hollow casted Gun Metal bar by way cutting, turning and finishing process of machining including making of threads to inner portion of the bush for fitment of MS Tube tension Nipple having OD = 73mm rear end using skilled labour, tools and tackles, high speed cutting tool to achieve the required parameters.

Repairs to existing available Departmental damaged tube tensional Nipple (TT Nipple) having ID= 64mm, OD=73 mm and overall length of 1244.6 mm9 approx.) with damaged / worn out threaded portion upto a length of 100 mm having external threads on top end and internal threads on bottom end. The job includes providing , fabrication and fitting / welding of new 300mm long MS tube of same size on both upper and lower end after cutting of the 300mm long damaged / worn out portion of the existing Tube / Nipple and also including making of internal and external threads upto 150mm/ as per requirement on both sides by way of cutting, turning and finishing processes of maching and checking its proper alignment.

Providing, fabrication Socket from a solid SS Cylindrical Bar, and fitting of Socket internally threaded in anti-clock wise direction of length 100mm, ID= 40 mm, and OD = 52 mm to fit on line shaft / as per sample.

Providing, fabrication, and fitting of intermediate GM Bearing bushes as per sample/ having ID=45 mm, OD= 67 mm, and 103 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 after extraction / cutting of worn-out screw bushes by way of engaging skilled labour, tools and tackles required of this precise job.

Loading of the repaired 3 Stage, 5 Cusec Bowl / Pump assembly along with transmission system parts from pvt workshop to site and lowering / installing it at site along with transmission system by a skilled worker including carrying out testing at site. The job includes all leads and lifts and using of tools and tackles required for its installation.