MID/AN/169

Dismantling of the 3.5 cusec discharge HC pump ( 6.5ft x 3.5 ft x 3.0 ft) at lift irrigation station Kotgarhi H/L by way of demounting the pumping machinery from the bed plate after removing the pump, motor ,electric connections, coupling pulleys, suction and delivery pipes and finally removing the base frame . Breaking the damaged RCC foundation block with the help of chisel, concrete cutter , electric jack hammer , tools/tackles. Cutting of steel members with the help of cutter stepwise during the process of breaking the RCC block and stacking. Completely removal of broken concrete, soil and TMT bars from pump room in such way that the machinery and electric equipments of other pumping machinery are not damaged /effected. Disposal of salvage/debris of dismantled foundation away from pump room to such a place where irrigation land and water source is not polluted.Laying of new RCC foundation block of size – 6.5 ft length x 3.5 ft width x 3.0 ft depth by way of making surface even for laying of new RCC foundation block. Fabrication of steel mesh out of 10 mm TMT bars members placed vertically and horizontally at equidistance of 6 inches. Laying of 6 inch concrete base at the bottom to level the surface . Placing of fabricated iron mesh in foundation pit and leveling / aligning it with pumping unit. Fabrication and grouting of 8 no. foundation bolts of size 3 ft in foundation block . Laying of RCC foundation block of size 6.5 ft x 3.5 ft x 3 ft by filling the concrete in the ratio of 1:1.5:3. The size of the block above the ground level should be of original size and alignment in respect of suction and delivery pipes. The block shall be filled with rich mixture of concrete with using vibrator for compaction. The entire block as one unit is to be laid in such a way that it can damp all types of mechanical vibrations created by dynamic load of pumping unit without causing any defect to the pumping unit as well as to the block itself. Fixing of the base frame after leveling and fastening with foundation bolts . Complete job includes cost of material such as cement , sand, steel gravel , shuttering charges, charges for concrete mixture , vibrator charges and labour charges of skilled as well as semi skilled labour , curing charges. The material has to be carried to Lift irrigation station from crusher . Providing/ Fitting and installation of Raw water H.C. pump of 3.5 cusec discharge, 36 meter head coupled with existing 100 HP induction motor 3 phase 1480 rpm at LIS Kotgarhi H/L in place of exiting pump. Recommended make of Pump : Any reputed make as per IS standards. Type of Pump : End suction HC Pump/split casing HC pump. PRIME MOVER/DRIVER a) Existing 100 HP Motor . b) Type = 3 phase induction motor, 415+-5% v, 50 Hz(AC). b) Speed = 1480 Rpm Type of water-: cold water, silt laden,raw water(fresh raw water) . Material of construction 1. Impeller-Cast Iron 2. Pump Shaft - Stainless steel 3. Wearing Ring - Cast iron 4. Pump casing - Cast iron 5. Base frame – Mild steel. 6. Gland- Cast iron The Job includes shifting of HC pump to Lift irrigation station Kotgarhi H/L by mechanical transport . Unloading of pump and then shifting to the LIS manually. Fitting of new pump on the base frame , fastening of suction and delivery pipes with the pump assembly by flanged joints. Fitting and Installation of existing 100 HP motor on the base frame with help of chain pulley block, tripod stand and manual labour. Fitting the motor assembly with help of nuts, bolts and washers. Fitting of new C.I. Coupling/ flexible coupling as per the size of the pump shaft and motor shaft and coupling the pump & motor unit by providing and fitting of cotter ,rubber bushes, nuts & bolts. Checking the alignment of the pump and motor assembly with the help of tools and tackles . The job also involve arrangement for priming for the newly installed pump. After priming of the pump ,testing and commissioning of the pumping unit on full load. Complete Job includes cost of material , consumable, handling loading, unloading , transportation charge , labour charges for both skilled/semiskilled labour and hiring charges for crane , tripod stand , tools and tackles required during the execution of the job at site.

GANPATI ELECTRICAL AND MECHANICAL WORKS

SUNIL KUMAR SURI CONTRACTOR