NIT No-14 EE (SDW) II/ (23-24) Item No. 05

Isolating the Secondary Clarifier (FST) by operating Sluice Gate and providing metallic sheet & gunny bags to ensure no flow in the FST. Dewatering the stagnated effluent and cleaning the FST with the help of sump pumps and D.G. Set. De sludging and Cleaning the FST for execution of work.

Dismantling of electric motor, primary & secondary gear box and other mechanical accessories from the top of center mechanism after disconnection from main electric supply and shifting to workable place.

Dissembling of primary & secondary reduction gear box.

Servicing/re-placement of worm gear & pinion of primary gear box & gear & pinion of secondary gear box, bushes and wheel fabricated as per sample and as per requirement in respect of size & finishing.

Providing/Fixing of set of bearings comprising bearing 7306 – 2 Nos. 7204 – 2 Nos. & 32216 – 2 Nos. Make: - SKF/FAG

Re-fixing of primary & secondary reduction Gear box after resembling the all above parts and alignment with motor, fixing of oil seal, filling of oil.

Providing of gear oil 320. Make: - Servo.

Dismantling of worn out bottom scrappers along with arms with the help of gas cutter, all tools & tackles.

Fabrication/ providing of sets of bottom scrappers of sizes appx. 2700 x 200 x 8 mm along with rubber squeezers & M.S. Plate.

Providing of M.S. nuts & Bolts of different sizes.

Dismantling/ Cutting of worn out/ corroded M.S. sheet of walk way, angle Iron along with bottom of bridge with the help of gas cutter, all tools & tackles with safety equipment as per requirement at site.

Providing of different type M.S. Angle Iron of size 65 x 65 x 6 mm. approx 974 kg, size 75 x 75 x 6 mm approx 893 Kg size 50 x 50 x 6 mm approx 479 Kg, size 125 x65 C channel approx 538 Kg & 150 x75 mm C Channel 1292 Kg approx. or size as per site requirement for strengthening of bridge complete in all respect as per required.

Providing and fixing of MS Chequred sheet 8 mm thickness for bridge platform 31 sq meter approx. as per site requirement.

Providing and fixing of MS Plate of size 250 x 250 x 10 mm - 236 kg , 150 x 150 x 10 mm - 85 Kg., and 150 x 100 x 10 mm 57. and for supporting of bridge plateform as per site requirement.

Labour charges for fixing of above scrapper’s arms, bottom scrappers with squeezers making hole for tightening of nuts & bolts i/c all welding & cutting works.

Providing the Tie Road with support assembly

Fixing of above Tie Rod at both side of central drum for holding the scrapper arms with adjustment assembly.

Dismantling of worn out V-notch of rusted nut bolts with the help of gas cutter, all tools & tackles. .

Providing the S.S nut bolts as per sample for fixing the ‘V’ notch as per requirement of site. (216 Nos.)

Fixing the V-notch in FST after drilling in RCC with power hammer including all civil work with all tools and tackles complete as per site requirement. (216 Nos. apprx)

Providing the M.S. channel of 125X 75 mm approx 25 meter and M.S Angle 65X65X6 mm approx 25 meter (for central drum) as per requirement.

Repairing of centre drum by patch work using 5mm thick M.S. sheets and homogenous electric and welding i/c replacement of the damaged stiffeners of the drum with the help of electric welding by providing of size 50x8mm M.S. flat as per site requirement. The job also includes replacement of the damaged portion of the drum and restringing with 50x50X8mm angle iron fixed on the top and bottom of the drum with the help of electric welding.

Providing of Red oxide metal primer in 20 kg packing. Make: - Asian/Nerolec/Burger.

Providing of synthetic Enamel paint in Black/Yellow Colour in 20 Ltrs. Make: - Asian/Nerolec/Burger

Painting of the complete structure after removing of rust with brush with one coat of primer & two coat of enamel paint Black and yellow approx. 15 drum i/c petty items.

Testing & commissioning of Clarifier after general servicing of starter, making the all electric connections with the help of thimbles, nut and bolts etc as per requirement, testing and commissioning of the same at NO Load and Full Load satisfactorily as per site requirement complete. The work also includes contingency charges, providing of heavy labour i/c any risk & cost of the labour etc.

Raj Engineering Co.