106/MID/AN

Strengthening, Improvement with allied works of Column Assembly of 20 cusec discharge, 40 meter Head, Jyoti make 2 stage VT Pump no. 01 installed at L.I.S Rajal by way of Reconditioning of S.S A.I.S.I-410 line shaft 70 mm dia. x 2180 mm. long at worn out portions by way of rebuilding the worn out, undersize portions by re-metalling with special S.S welding electrodes in layers and then turning, grinding, polishing, finishing to true size and specifications including rebuilding, finishing of key ways to true size. Also removing and checking eccentricity of line shaft with dial gauge at various off sets. Removing deflection/eccentricity by heat treatment or on hydraulic press, removing of deflections on heads/ends and then again checking the alignment of the shaft on lathe machine. P/F of new fabricated A.I.S.I-410-S.S line shaft cotter pins. ( as per sample) Complete job.

Fabrication and providing at site top shaft sleeve of dia.70 mm made out of stainless steel A.I.S.I-410 grade ( as per sample.) also reconditioning of A.I.S.I-410 top shaft 2315 mm long x 70 mm dia by way and re-metalling the worn out undersize portions with special s.s welding electrodes in layers and then turning, grinding, polishing, finishing to true size. Also removing checking eccentricity of top shaft with dial gauge at various off sets. Removing deflection eccentricity by heat treatment or on hydraulic press. Removing of deflection on heads/ends and then again checking the alignment of shaft on lathe machine. P/F of new fabricated A.I.S.I-410-S.S cotter pins along with reconditioning of key ways. Also rebuilding the threaded portion of the shaft and its nut with re-metalling with S.S. welding electrodes, turning, finishing to true size and then rethreading the nut and the reqd. portion of the top shaft. Complete Job.

Fabrication, providing , Fitting at site C.I. guide spider set with three legs comprising of one no. guide spider suitable for line shaft of size 70 mm dia. three no.’s rubber pads and slotted C.S M12 x 20 mm screw, one no. rubber bearing, one no. cover for rubber bearing and bearing screws and washers (as per sample.) Complete Job.

Repair, reconditioning of M.S. deflector tube 200 mm dia 2.315 m long by way of cutting removing of damaged flanged ends. Fitting welding on each end of the new fabricated flanges as per sample specifications. Also repair to the under size fins of the deflector tube by way of welding, patching at worn out places to attain reqd. shape and size specifications. Straightening, aligning the tube and facing the ends as per proper alignment. Complete Job.

Fabrication, providing , Fitting of A.I.S.I-410-S.S muff coupling of size of length 300 mm and bore size to suit line shaft of dia. 70mm along with its top and bottom split nuts and keyways. The machining should be done accurately for proper fitment and removal as and when desired during dismantling of column assembly. ( as per sample.) Complete Job.

Reconditioning of A.I.S.I-410-S.S muff coupling along with its top and bottom nut by way of rebuilding at worn out portions with re-metalling with S.S. welding electrodes, turning, finishing to true size and rethreading the nuts and reqd. portions of cylinder with facing, turning all surfaces of nut and cylinder for proper fitment along with rebuilding of key ways. Complete Job.

Providing / fitting at site guide spider rubber bearings, nitrile rubber pads for arms, C.S head screws M12 x 20 mm, M.S cover dia. 130 mm with drilled 4 nos. holes for rubber bearing locking and locking screws M10 mm ( as per sample.) Complete Job.

Providing and Fitting at site of M24 x 120 mm high tensile steel bolts with washer and nut ( as per sample )

Providing and Fitting at site of M 20 x 50 mm H.T steel bolt with washer and nut. ( as per sample )

Strengthening /reconditioning of the cast iron motor and pump half coupling for bore size 70 mm and length 260 mm. Rebuilding the damaged, worn out portions by welding, turning and finishing/grinding and rebuilding the coupling’s bolt holes dia. 16 mm, making keyways along with rebuilding of holes for Allen bolts. Fabrication of new cotter keys as per size and specification. Fabrication and fitting of intermediate spacer nut for pump and motor coupling including drilling of holes for coupling bolts with same P.C.D as per motor and pump half coupling. (as per sample) Column assembly. Complete Job.

Reconditioning of 200 mm dia. E.R.W shaft enclosing tube by cutting, removing from both ends of 200 mm dia. shaft enclosing flanges and fitting of new flanges similar size as specification to each end of the tube which should have 06 no of M 20 dia size threads, M.S welding to both ends of the flanges and then turning, facing both ends with respect of all over accurate thickness, straightening and alignment, facing of the tube. ( as per sample ) Complete Job.

Assembling of each column one by one internal and external 500 mm x 200 mm x70mm dia. in sequence and lowering in the respective pit along with bowl assembly of 20 cusec discharge V.T pump. This includes fitting, lowering of the line shafts, guide spiders, muff couplings, top shaft, tension tube, deflected tube, jointing of discharge surging head with delivery line 500 mm dia along with providing and fitting of relevant jointing material, F.F sheet, graphite packing, grease packing 19 mm size nut, bolts, washers, fitting and tightening of complete alignment, leveling. Complete Job .

Testing of pumping unit which includes installation of 300 KW, 400 H.P, 6.6 kV, V.T. Motor solid shaft B.H.E.L make H.T motor on the skirt and its alignment with respective pump half coupling, reconnection of dismantled cable connections of 6.6 KV, three phase to rotor, stator, commutative assembly, liquid rotor starter trifurcated sealing box and space heaters, cleaning of all carbon brushes, connecting of motor half coupling with pump half coupling, checking of all connections with proper alignments and adjustment. Testing of pumping unit for its proper operation. Complete Job.

Shifting, transportation (to and fro) of fast moving damaged components of column assembly of the 2-stage Jyoti make V.T. pump no 01 from L.I.S. Rajal to workshop for repair, reconditioning and from Jammu workshop to L.I.S. Rajal after repair, reconditioning. Job includes loading, unloading, handling charges at both ends and hire charges of truck as well as cost of fuel and lubricants used by the vehicle. Complete Job.

HITECH MECHNICALS

TARSAIM ELECTRICAL WORKS