NIT No-21 EE (SDW) II/ (21-22) Item No. 02

Renovation/Strengthening of turntable and moving structure of PST (15 MGD) with allied works at 12 MGD STP Okhla by carrying out following works:-Isolating the PST by operating sluice gate and providing gunny bags to ensure no flow in the PST. Dewatering the PST with the help of sump pumps etc. Cleaning the PST with the help of machines/manually for execution of work.

Dismantling of motor and PST reduction gear box and other mechanism fixtures from the top of centre mechanism and shifting to workable safe place.

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

Dismantling the central driving unit by cutting nut and bolts with the help of gas cutter and dismantling of shaft, central gear, worn gear and transmission unit and shifting to the workable place.

Dismantling the damaged structure of the both side scrapper arm structure by cutting the nut-bolts with gas cutter and shifting the same to a workable place with the help of mobile crane & heavy Labour tec.

Overhauling of reduction gear box on the side by repairing of head ,gear and replacement of above coupling sprocket and wheel etc including oil seals packing and fasteners’ with replacement of as per samples.

Renovation and strengthening of scrapper arms structure by way of providing / fixing new elements of the structure made out of M.S. angle of size 75x75x8 ,65x65x8 mm & 50x50x6 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.

Replacement / Renovation of the bottom scrapper made out from 8 mm thick M.S. sheet of size 200x1700 mm approx. i/c replacement of the rubber squeezers with M.S. flat after making holes at equal distance and fastening through the nut bolts.

Renovation of centre drum i/c replacement of the damaged stiffeners of the drum and making required patch work with 6 mm thick M.S. sheet (approx. 25 Sqm) with the help of electric welding, gas cutter etc as per site requirement.

Providing/fixing of one no. Of 3 Hp 3 phase 440 V 960 RPM foot mounted induction motor of DJB approve make along with repairing of the foundation of motor, coupling and required nut bolts and supply of the same specification spare motor for emergency breakdown due to burnt out motor.

Assembly of complete internal gear and gear box assembly after fixing of complete turn table along with the other gear with all safety measures with heavy labour and material equipment.

Painting the complete structure by carrying out following works:- Providing the metal primer red oxide (in 20 Ltrs. Packing)

Providing the synthetic enamel paint Black (in 20 Ltrs. Packing) Make:- Asian/Nerolec/Berger

Providing the synthetic enamel paint tractor orange (in 20 Ltrs. Packing) Make:- Asian/Nerolec/Berger

Providing of thinner (General propose) for diluting the paint (in 20 Ltrs. Packing)

Painting the complete structure with one coat of epoxy primer and two or more coat of enameled paint as per requirements.

Testing & commissioning of complete unit on NO load / full load after removing gunny bags and temporary plate form. The job also includes fixing up the new belt to motor-gearbox and varnishing of the motor with Dr. Beck Varnish.

Goodwill Enterprises

B.S.Enterprises

Shakti Trading Co.

Gupta Brothers