Repair to 3 cusec x 50m head pump along with allied works installed at LIS Padoh

Dismantling of 3 cusec, 50m head pump of pumping unit No I from the base frame at LIS Padoh after decoupling it from motor, taking out impeller shaft assembly and then dragging out from the pump house and then carriage to road side through hilly terrain by manual labour with the help of ropes, bamboos etc. and then loading in mechanical Transport vehicle for shifting to workshop for its repairs and carriage back in the same manner upto the site at LIS Padoh. The job involves complete dismantling of impeller shaft assembly at workshop, i.e. bearings, sleeves, gland bushes, pump shaft and impeller etc. Rebuilding of pump shaft by way of re-metalling using good quality electrodes, machining, turning and finishing to required size as per sample and repair to impeller by way of brazing, turning and finishing to required size. P/F of shaft protection sleeves 02 Nos., impeller guide rings 02 Nos., gland bushes 02 Nos., bearing housing sleeves 02 Nos., bearings at DE and NDE as per sample after properly cleaning of bearing bracket and gland plate 02 Nos. Re-assembling all parts of impeller shaft assembly with proper greasing. Providing of gland packing-2kg and grease-1kg for smooth operation of pumping units installed. Disconnecting 90 HP oil immersed starter of pumping unit No I, dismantling all parts and cleaning of the contacts with appropriate chemical and anti-corrosive agent, extracting the damaged current transformers, no volt coil, overload relay of the tripping system and replacing the same with new ones, making connection by re-making of ends of cables by P/F of thimbles. Providing/filling of approximately 15 litre transformer oil for topping of starter and reconditioning of the old transformer oil. Repair to 150mm Dia sluice valve of unit-I at LIS Padoh by way of providing, fabrication and fitting of stem rod with nut, body seat ring, ring for flap, gland bracket with gland stud/nut. Replacement of bolts, nuts & rubber gaskets. Repair to 200mm dia foot valve of of Unit-I, Unit-II and Unit-III at LIS Padoh by way of dismantling foot valves from suction pipes in sump tank. Dragging out from sump with the help of manual labour using tools and tackles. Dismantling of foot valves and replacing the leather sheets cut to size along with flap, hinge pin, rubber sheet for flanges with required nuts and bolts. Re-assembling and fitting the same to suction pipes in sump tank with the help of manual labour. Job further includes welding of 02 no. suction pipes around the joints at multiple spots so as to plug the leakage by chipping and cleaning of the rusted/damaged portion of pipes and then welding the joints by welding set in two layers by way of arc welding using superior quality welding electrodes. Complete painting of suction and delivery pipelines of 3 no pumping units upto the common manifold after removing of all the dirt/dust and foreign deposits with the help of sand/emery paper and applying two coats of black enamel paint. The job involves fitting/installation of repaired impeller shaft assembly in the 3 cusec 50 m head pump at proper position on the Unit-I and closing the top cover by P/F of new nuts, bolts, studs, washers, rubber/paper sheet and gland packing along with greasing, coupling with motor, alignment setting and testing on no load and then on full load. Complete job involves cost of material, charges for skilled/unskilled labour, transportation charges, headload charges, hire charges of tools and tackles required for the job inclusive of all taxes as applicable. Complete Job.

M/S TRIKUTA ELECTRICAL AND MECHNICAL WORKS

BEE AAR ENTERPRISES