NIT NO. 7 (2021-2022) EE(SDW)VI/ ITEM NO.2

Isolating the PST by closing of penstock gate and providing gunny bags to ensure no flow in the PST. Dewatering the PST with the help of submersible pumps. Cleaning the PST with the help of machines/manual labour for execution of work taking in all the safety measures & equipment.

Making temporary platform as safety measures on the side of the central cage as per site requirement for dismantling of drive head.

Dismantling of old damaged structure from the site with the help of gas cutter & man power as per site requirement. Lifting the same from the PST after completion of work.

Repairing of upper and lower liners of the turn table by Lifting the turn table up to suitable height after cutting of rusted nut & bolts i/c replacement of SS bolls as required in size and nos. at site.

Repairing/Replacement of damaged channel of the existing central drum of the PST as per site requirement.

Renovation and strengthening of scrapper arms structure by way of providing / fixing new elements of the structure made out of M.S. angle iron of size 75x75x10 mm 65x65x8 mm & 50x50x8 mm by using new fasteners and homogenous electric arc welding and balancing the both side arm with the help of tie rod and with adjustment bolts.

Repairing of the primary reduction gear box fixed on the top and central mechanism i/c replacement of damaged spares of the gear box and central mechanism, the job also include replacement of bearings (roller balls), gear oil etc. of the same.

Replacement / Renovation of the bottom scrapper made out from 8 mm thick M.S. sheet of size 200x3050 mm approx. with M.S. flat after making holes at equal distance and fastening through the nut bolts.

Replacement of Rubber squeezers as per size of above Scrapper with 6 inch wide and 8mm thickness fixing with nut and bolts.

Repairing/fixing of scum arm and scum box made of SS material by providing and fixing of proper support and making alignment by repairing and welding of scum scrappers.

Strengthening of PST bridge by providing and Fixing the of Jali Made out M.S. Flat size 50x6 mm in vertical shape with 40 mm centre to centre distance welded with 25mm M.S. Strip with press moulded Zigzag shape duly welded at site. Total length 22 Mtr.X 0. 95 mtr approx.

Providing and fixing of traction wheel for Bridge of size as per site requirement.

Providing/fixing of CI plumber block with bearing no. 1313K and sleeve as per sample.

Repair/overhauling of the Gear Box of PST with repairing the main pinion and gear with oil seal and repair the chain for motor to gear and replace the oil gear box fixing the new motor at site.

Replacement of New Electric Motor (1.5 kw/415v/3.3 Amp/1400 Rpm/50 Hz) with pulley and key. Make: Kriloskar/CG/ABB/Any other DJB approved make

Providing & fixing of covering shed of hut type at center of the PST as per site requirement made out from fibre sheet of 5 mm thickness and M.S. Pipe of 2” x 2” sq size.

Painting of the complete structure after removing the rust from the structure with the wire brush. Painting the surface with the one coat of red oxide primer and two coat of anti-corrosive paint.

Alignment, Assembling, testing, commissioning of complete unit on NO load / full load after removing gunny bags and temporary plate form.

INSTANT TRADE CORPORATION

Shakti Trading Co.

Mehar Enterprises