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 02 installed at Tawi Pump House, Jammu for improving efficiency and performance of pump set.

Amount

Transportation charges for shifting of worn-out components of the VT pump of 900 VM-2 ,60 Cusecs, discharge,32.30 mtr Head VT pump of pumping Unit No 02 for repairs 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 E.O.T crane and manual labour. Reconditioning of the bowl guide of VT pump by Providing and fitting of new bowl guide sleeve by way of extraction of damaged sleeve and fabrication of new bowl guide sleeve out of C.I material as per sample. Turning, finishing, and 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. Reconditioning to 3rd & 4th 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. Replacement of 2nd Shaft Enclosing tube by way of fabrication of new shaft enclosing tube (APS) out of 8 inches dia. ,8 mm thick MS seamless pipe having length 2970 mm including thickness of flanges .Fabrication of two nos. flanges ,30 mm thick,320 mm dia. having 12 nos. holes of 18 mm dia. on both the flanges at an equal distance of 30 degree on both the ends of the shaft enclosing tube with the provision of six Nos. stiffeners on each flanges at an equal distance and welding the same with pipe from both ends .The shaft enclosing tube shall be painted with two coats of red oxide and then with two coats black enamel. Reconditioning of 4th 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. Reconditioning 01 no. 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. Fabrication and fitting of one number line shaft bearing holder by way of fabrication out of cast Iron having 230mm height, 170mm outer dia. and 125 inner dia. for housing of line shaft rubber bearing with 10mmx20mm size seat portion at bottom end of bearing holder for resting of rubber bearing, with inbuilt flange in the center of bearing holder of 25mm thick and 70mm wide with 12 Nos. holes of 18mm dia. on it at an equal distance. Each hole should be at a distance of 19mm from the outer end of the flanges as per sample. The bearing holder shall be checked for its proper alignment with dial gauge at different off sets during fabrication. The job further involves back carriage of the repaired/Fabricated parts i.e., Bowl assembly, shaft enclosing tubes, SS line shaft, 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 E.O.T. crane and manual labour. The job also includes providing of consumables items for fitting during lowering of the VT pump like thrust pad – 06 nos, line shaft rubber bearing 7 Nos, bottom rubber bearing- 1No., HT column bolts with nuts 120 x20 mm (reputed make) 24 Nos., HT shaft enclosing tube bolts with nut 110x16 mm 18 Nos. HT bolts with nuts 110x25 mm(reputed make) 08 Nos., HT bolts 55x16mm 10 Nos., HT Allen key bolts 40x16 mm 10 Nos., HT Allen key bolts 40x12 mm 12 Nos., HT Allen key bolts 40x5mm 12 Nos., spring washers-16 mm-24 Nos, spring washers 12mm- 24 Nos., fire fly sheet 1/32 - 6 kg, fire fly sheet 1/16 5 kg., rubber insertion sheet 1/18-12 kg, gland packing ¾”-2 kg, Grease 7 Kg, hacksaw blade double edge 6 Nos., HT bitumen tape roll, emery cloth 7 mtr, dhoti cloth 3kg, Providing lubricating oil 15 liters servo system 46 (servo system 46 to be provided by the department). 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 and fitting /assembling of parts during lowering of VT pump. Complete job includes cost of materials and labour charges.

HITECH MECHNICALS (BID ID -2630103)

GS ENGG WORKS (BID ID -2631066)