Repairs of 05 cusec discharge 75 HP VT pump and motor of unit-II along with allied works at LIS KatalBatal..

Amount

Dismounting of 75 HP motor from base frame and extraction of 05 cusec discharge 02 stage VT pump of unit-II by way of disconnecting the motor connections, dismantling the column assembly pipes 8” dia, spider guides, line shafts, pump shaft and bowl assemblies. Head load carriage to road side up to loading point with the help of skilled manual labour and then loading into a mechanical transport for carrying to work shop for repairs with the help of crane/tools, tackles using manual labour. Complete job includes cost of labour, carriage charges and hire charges of tools and tackles. Dismantling the 2 stage VT pump by way of unscrewing/cutting of rusted bolts, nuts and studs and separating the pump body and bowl. Repairs to 05 cusec VT pump by way of repairs to suction bowl body by fabrication of CI sleeve required for fitting of neck ring by casting, turning and then press fitting in the suction bowl body. Repair of suction bowl bearing housing by way of remetalling turning, finishing to size as per requirement. Rebuilding of intake fins and grinding. Providing/ fitting of neck ring of stainless steel material- 02 Nos. by casting, turning and boring to the required size of precision and press fitting the same in the bowl body and locking properly. Providing and fitting of new stainless steel pump shaft and then threading it and making key way on shaper to the required size of precision. Fabrication of impeller holding lock ring- 02 Nos. out of SS rod as per sample. P/F of Ist stage CI impeller and repairs to IInd stage impeller by remetalling it with machine able electrode and turning and machining it to its original shape and size of precision. Repair to stuffing box by providing and fitting of new bronze bush as per sample to required size of precision after remetalling, finishing and drilling holes and making internal threads on stuffing box as per requirement. Fabrication of top shaft by way of rebuilding with machinable SS electrode at worn out portions and then threading and making key way on shaper to the required size of precision. Fabrication of new check nut of given size. Providing and fitting of new CI spider guide 02Nos. along with rubber bush as per sample. Fabrication/ providing and fitting of 04 Nos body bushes. Repairs to 02Nos line shaft by way of welding, turning and making threads as per sample. Providing and fitting of 3 Nos sleeves along with one No line shaft by making internal threads of required size. P/F of rubber sheet joints for flanges05Nos cut to required size. The job includes fitting of the pump using new nuts and bolts/ studs. Complete job includes cost of material andlabour charges at workshop. Dismantling of 75 HP VT motor at workshop after unscrewing the lock nut and check nut. Taking out the bearing/flywheel cover assembly using tool and tackles. Extracting the rotor from stator and then retched assembly, dismantling the retched assembly to extract the old damaged bearing along with bush. Providing and fitting of new retched bearing set. 7320 or as per sample along with bush fabricated to required size. Assembling back the rotor into stator and then retched assembly of motor and P/F of Bakelite terminal plate along with brass nuts and bolts. Installation & testing of motor at site after making all the electrical connections by P/F of new thimbles of appropriate rating/ size. Complete job includes cost of material and labour charges. Loading the repaired pump and motor along with line shaft into the mechanical transport using crane/tools, tackles with the help of manual labour at work shop. Unloading the same at road site at LIS Katal Batal using crane/tools, tackles with the help of manual labour. Carriage to the site of installation through head load using tools and tackles with the help of skilled labour. Lowering down the pump into the sump by connecting the line shaft and suction pipes ensuring proper alignment. Mounting the motor on the base frame by way of coupling it with line shaft and by P/F of gland packing, grease, M.oil and rubber sheet joint cut to required size. The complete job includes cost of material, carriage, fitment charge and testing on full load at site. Repair to sluice valve of 200mm dia of unit II by way of dismantling the top cover of sluice valve by opening the damaged/rusted nuts, bolt and extracting out the damaged sluice valve rod along with check nut for lifting the flap assembly. P/F of new sluice valve rod along with Check nut as per sample. Assembling back the sluice valve by P/F of rubber sheet joint along with new nuts and bolts P/f of gland packing of appropriate size at site. Checking the up and down movement of the flap assembly. Complete job include cost of material, labour charges and testing on full load at LIS KatalBatal.

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