Mechanical repairs to 3 stage, 04 Cusec Bowl Assembly of New VT Station Unit No.04 of WSS Doodhganga.

Amount

Loading of the damaged Bowl/ Pump assembly already extracted from unit / Spot No.04 in a private load carrier and shifting of same to the Private work shop for carrying out necessary repairs with all leads and lifts thereof included unloading at workshop. Dismantling of the Bowl/Pump assembly in a Private Workshop involving dismantling of 3 Stages of Bowl/Pump casing/stages followed by extraction of Impellers from housings, damaged /broken/worn-out sleeves/wearing rings, collects, bearings bushes etc from all the stages of Bowl/Pump assembly included worn out bowl/Pump shaft using skilled personal tools and tackles required for the Job.

Providing, Fabrication, and fitting of New Stainless-Steel GRADE 410 bowl shaft having OD=55 mm Length= 1.98 meters as per sample. The Shaft has to be precisely machined at various required segments for accommodating Impellers’, locking Collets, bearing bushes etc by way of using skilled labour, tools and tackles. The job includes using 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 43 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 . Checking of alignment of shaft on the lathe for proper fitment in the bowl housing/stages by way of cutting, turning and finishing.

Providing, Fabrication and fitting of cutless Gun Metal [GM] Wear-ring /Necking having ID= 200 mm and OD= 212 mm and width/ length of 50 mm (as per sample) fabricated / casted out of Gun Metal along with making of Seat and collar for fitment in bowl stage and on impeller shoulders respectively. The job involves engagement of skilled labour, precise tools and tackles as required.

Providing, Fabrication, and fitting of CUTLESS G.M BEARING BUSH/SLEEVE ( including Rubber stablizing Bush as per required size inside it) of dimensions ID= 55 mm, OD= 75 mm and length 75 mm as per sample to be press fitted in intermediate bowl parts fabricated out of suitable hallow 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 CUTLESS G.M BEARING BUSH/SLEEVE ( including Rubber stablizing Bush as per required size inside it) of dimensions ID= 55 mm, OD= 80mm and length 210 mm (as per sample) to be press fitted in 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 cutless G.M CUTLESS BEARING Bush (including rubber stablizing bush as per required size inside it) having ID= 55 mm, OD= 75 mm, and 205 mm long as per sample to be press fitted inside the bottom end of the upper bowl 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.

Reaming of the damaged threads in the bowl stages using reaming tool and making of new threads for proper fitment of new stud / bolt ( 20 Nos to be supplied) in the developed threads in the bowl stage.

Fabrication, Providing and fitting SS LOCK COLLET frustum type as per the sample having length of 90mm, ID = 55mmand OD =68mm as per sample fabricated out of solid SS round cylinderical bar by way of turning , boring, cutting and finishing / maching process. The job includes cutting of impeller lock collet around slanted portion to be press fitted for locking the impeller on the bowl shaft by way of enanging skilled labours, tools tackles etc required for precise job.

Providing , fabrication and fitting of SS Socket internally threaded in anticlock direction of (length 100mm , ID = 43mm and OD= 55 mm approx. / as per sample) to fit on line shaft as per sample.

Repairs to Gland Box by way of providing and fabrication and cutting of cut less G.M bearing bush /sleeve as per sample having ID=100 mm ,OD=120 mm and length 120 mm as per sample to be press fitted inside the Gland box assembly at lower end fabricated out of suitable hallow casted G.M bar by way of cutting, turning and finishing process of machining including making of threads to inner portion of the bush for fitment of MS Tube tension Nipple rear end using skilled labour, tools and tackles, high speed cutting tool to achieve the required parameters.

Providing fabrication and fitting of Cast Iron Bushing of following dimensions after extracting / removing damaged / worn out CI Sleeves from the Bowl : Outer Dia = 232mm ( approx.) , Inner Dia = 212mm ( approx) , Length = 60mm.

Providing and fitting of 5 mm rubber insertions at four spots duly cut out from the RI sheet as per requirement for the the pumping .

Loading of the Bowl/ Pump assembly after conducting repairs and back shifting of same in a Private load carrier including all leads and lifts upto Site WSS Doodhganga and unloading at site and then installaing it at Spot no. 4 at new VT. The Job includes using of all kinds of tools and tackles required at site besides installation work shall be done by the skilled workers. Finally Job includes testing at site.

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