P/F of new components by way of replacement of old damaged/worn out components of 900VM-2, 60 cusecs, 32.30m head VT pump no 03 installed at Tawi Pump House, Jammu for improving efficiency and performance of pump set.

Transportation charges for shifting of worn-out components of the VT pump of 900 VM-2, 60 cusecs, 32.30m head VT pumping unit No.3 such as bowl guide, muff couplings, S.S line shaft, line shaft bearing holder to the workshop by way of loading in mechanical transport from Tawi pump house and unloading the same at the workshop with the help of crane and manual labour. Reconditioning of the bowl guide of VT pump by way of extraction of damaged top and bottom Strip along with damaged guide pin fitted on top seat portion of the bowl guide .Rebuilding seat portion where cavitation was caused during operation and turning, finishing & polishing of welded portion to remove its ovality . Providing and fitting new MS strip at top and bottom seat portion and turning, finishing the same to required dia of the seat portion of bowl guide in the CI bowl. Drilling of four nos holes as required on the top seat portion for fitment of guide pins. Fabrication and fitment of ST steel Pins- of required dia and length with threading at one end and Nut of required Size. Providing and fitting of new bowl guide sleeve by way of extraction of damaged sleeve and fabrication of new bowl guide sleeve as per sample of same material, turning, finishing, polishing to required size, facing of the flange for proper fitment into the bowl guide, drilling 12 No. equidistant holes at the flange for proper fitment of 16mm bolts, machining of inner bore of sleeve to the required dia of the outer dia of the line shaft rubber bearing. Providing and fitting of 12 Nos. HT bolts of 65mm X 16mm size with locking washers for fitment of bowl guide sleeve into the bowl guide. Job includes rebuilding of seat portion for fitting of sleeve on the bowl guide by way of re metaling, turning finishing and polishing to the required size drilling of 12 Nos holes with threading of 16 mm dia for fitment of sleeve and providing 12 Nos lock washers for locking sleeve. Repairs to 3rd shaft enclosing tube of VT pump by way of checking of face-to-face alignment and eccentricity developed in the enclosing tube at different off-sets with the help of dial gauge on lathe machine. Removing of eccentricity developed after welding /patching at the cracked portion with suitable M.S. welding electrodes and also welding of the cracked stiffeners of the flanges of the enclosing tubes. Providing and fitting new Stuffing Box by way of Fabrication of stuffing box as per sample out of CI alloy 370mm in height having inbuilt flanges of 320mm dia and 20mm thick at a distance of 225mm from the bottom end of the stuffing box having 170mm outer dia and 124mm inner dia and 200mm long seat portion inside the bottom end in the stuffing box for housing line shaft rubber bearing. The top end of the stuffing box is having 180mm outer dia, 130mm inner dia and 115mm long seat portion for gland packing. Providing of 4 no. stiffener at the top end at an equal distance and through and through 160 mm long 16mm dia hole at the top end for lubrication line of line shaft rubber bearings. Drilling of 8 no. holes of 18mm dia at a distance of 20mm from the outer end of the flange. The stuffing box shall be checked with dial gauge on lathe machine. Reconditioning of 1st and 2nd line shaft of VT pump by way of rebuilding of worn-out seat portion of the bearing on the line shaft with suitable S.S. electrodes conforming to AISI-410 grade. Turning, finishing, and polishing of the rebuilt portion to required size. Checking of eccentricity developed at the different off-sets of the shaft during operation and removing the eccentricity developed by means of press bench. The tolerance limit be kept within the prescribed limit of +0.03 mm. then repairs to shaft holes /pin holes/key ways including fabrication and fitting of SS pins, SS keys and one no. jib head key as per sample. Repairs to 01 No. line shaft bearing holder by way of rebuilding of the worn out/damaged inner portion of bearing holder using suitable machinable C.I electrodes. Turning, finishing and polishing the welded portion to the required size of the outer dia. of the line shaft rubber bearing. Repairs to 01 No Muff coupling by extraction of broken/damaged bolts from both the halves of the S.S. coupling by drilling and rethreading the drilled holes for 16 mm dia. Allen bolts. Repairs/rebuilding damaged /worn out portion of the muff coupling by way of welding with the suitable S.S. electrodes and turning, finishing, polishing of the welded portion to the required size. Replacement of old damaged Mechanical jack (Mech Type) -04 nos. for holding column pipes by providing and fitting new pressure Jack along with thrust pads-04 nos (Mechanical Jacks to be fabricated as per sample provided by deptt.). Replacement of damaged thrust pad of Three number guide spider by way of welding of damaged/worn out seat portion of guide spider with suitable C.I. electrodes and finishing the welded portion as required making the surface even. Extraction of broken/damaged bolts by drilling and rethreading the drilled holes for fitment of counter sunk bolts. P/F of rubber pads with counter sunk bolts in all the three arms of guide spiders. The job further involves back carriage of the repaired VT Pump assembly parts i.e. shaft enclosing tubes, SS line shaft and Muff coupling etc. to the site of Tawi pump house by way of loading in mechanical transport at workshop and unloading at site of Tawi pump house , Jammu with the help of manual labour. Assembling and lowering of extracted VT pump and column assembly involves complete wiping ,cleaning repaired parts, lowering of complete bowl assembly , column assembly in proper sequence by fitting of column pipes and fitting of discharge head and T joint with rising main further, lowering fitting of bowl guide along with impeller , fitting and lowering shaft enclosing tube along with line shaft one by one . P/F of consumables items during lowering of the VT pump like line shaft rubber bearing 7 Nos bottom rubber bearing 1No., HT column bolts with nuts 120 x20 mm (reputed make) 30 Nos., HT shaft enclosing tube bolts with nut 110x16 mm 20 Nos. HT bolts with nuts 110x25 mm (reputed make) 08 Nos., HT bolts 95x20mm 06 Nos. , HT bolts 55x16 mm 10 Nos., HT bolts 40x12 mm 12 Nos., HT Allen key bolts 40x16 mm 10 Nos., Allen key bolt 40mmx5mm 12 Nos., spring washers-16mm 30 nos., spring washers 12mm 30Nos., fire fly sheet 1/32” 6 kg, fire fly sheet 1/16” 5 kg., rubber insertion sheet 1/18” 12 kg, gland packing ¾” 2kg,hacksaw blade double edge 6 Nos., HT bitumen tape roll, emery cloth 7 mtr., Dhoti cloth 3 Kg, Grease -7 kg and servo system 46-15 liter for topping of motor (servo system46, provided by Deptt.) Fitting of pump and motor half coupling, checking alignment of pump and motor using dial gauge, making all the electrical connection, tightening bolts, providing of gasket, electrical thimbles and then testing on full load. Skilled person shall be provided by the firm for extraction of VT pump, and fitting /assembling of parts during lowering of VT pump. Complete job includes cost of materials and labour charges. (Above rates are inclusive of all taxes as applicable)