NIT No. 28 Item No. 2 (2023-24)

Hiring crane operator for operation of gantry crane for taking out and placement of stop log gates in position of different grooves of Under Sluice Gate No 8 as per requirement with the help of divers to carry out various works under deep water on stop log gate at Yamuna barrage. The work includes cleaning the surface, removing the silt in upstream side of Under Sluice Gate No 8 of the bend grooves of both the ends where stop log gate is to be rest under deep water, which includes lowering/lifting of log gates by making proper arrangement of lifting boom, changing of hook of hunger of gantry crane under deep water with the help of other equipment that are required at the site and when the same is rest under the bend of the grooves the sealing/making leak proof of stop log gates is to be done under deep water with the help of the Under Sluice Gate 8 divers with crane operating staff so that work of painting should be carried out in the under sluice barrage gates. The stop log etc should be removed after completion. The divers team should be equipped with diving equipment such as Diving air control panel, Diving suit, Compressor, Oxygen cylinder etc and other under water equipment required at site i/c Rope and Gunny Bag as per direction of Expert Gradute Engineer(exper in under water) encharge.

Providing and fixing scaffolding system/temporary working platform on the deep water for Sand blasting/cleaning,priming and painting work of under sluice gate of barrage made with 40 mm dia M.S. tube/bamboos 1.5m centre to centre, horizontal & vertical tubes/bamboos joining with cup & lock system with M.S. tubes, M.S. tube challies, M.S. clamps/required strip with bamboos,strip,rope made by expert labour of under water with all safety measure used like Boat, life jacket, Oxygen cylinder,. and maintaining it in a serviceable condition for the required duration as approved and removing it thereafter .The scaffolding system shall be stiffened with bracings, runners,connection on the deep water surface etc wherever required for inspection of work at required locations with essential safety features for the workmen etc.complete as per directions and approval of Engineerin-charge with own boat. Gates Grooves and particularly their machined faces should be kept clean and lubricated well and all sticky deposits should be scraped off before application of lubricant.

Dismantling steel work and removing roller and other mechanical part for repair supporting steel of gate including dismembering and stacking within store and dry portion through Boat and under water expert labour.

Manufacturing/supply and fixing including cost of Dismantling of old socket of high capacity of steel wire rope both end socket for Balance box to shutter, at Wazirabad Barrage Delhi, including all cost of Material, Labor and T&P etc of Under Sluice Gate No 8 including socket. Socket should be Made by following minimum required material. 65%- led 5% zinc 12-20% tin 5-10% copper With load bearing capacity minimum12 tonnes

Cleaning of exposed steel structure surface back and front plate of Under Sluice Gate No 8 sticking material including loose and foreign material by sand blasting with coarse sand followed by and including cleaning with oil free air blast as per direction of Engineer in charge.

Priming coats with over the prepared surfaces one,coat of Inorganic zinc silicate (Preferably airless spray) should be applied giving a dry film thickness of 70 + 5 microns. Alternatively two coats of zinc rich primer (containing not less than 85% zinc on dry film) should be applied to give a total dry film thickness of 70 f 5 microns. For under sluice gate no -8. As per Painting of Barrage gates IS CODE IS 14177

Finishing coat should consist of two coats of solvent less coaltar epoxy paint. These should be applied at an interval of 24 hours. Each coat should give a minimum dry film thickness of 150 + 5 microns. The total dry film thickness of all the coats including primer coating should not be less than350 microns. For under sluice gate no -8. As per Painting of Barrage gates IS CODE IS 14177.

Providing and fixing of new gear shaft with small pinion as per sample complete in all respect and replacement of brake shoes, Replacement complete electric wiring in gear box and respiring break assembly.

Supply of bearing No 6315/C4 skf/fag/ DJBApproved.

Suply of bearing No 6312m/C3 skf/fag/ DJB Approved.

Supply of bearing No 6308 2RS1 skf/fag/ DJB Approved.

Supply of Oil Seal.

P/F of hardware item like nut bolt of various size as per sample and requirement.

Assembling of complete gear box packing greasing and fixing of both end shaft of C.I coupling and bolt.

Providing MS Gear box cover as per sample with premiering and painting by epoxy paint.

Complete overhauling af all the moving and strategic part of the shaft and pinion of the gear box attested to it with the help of grease gun nipple labour as per required at site.

Dismantling of Gear Box by removing both end coupling nd taking out complete shaft from the barrage gates by removing the thrust block by heavy labour an special type lifting arrangement and removing gear box from top halves by removing of both from the bottom help of body gear box.

Removing of Gear box bearing end cover and bearing on both side bearing housing and by hammering arrangement.

Repairing of pinion shaft and teeth by remitting with special type alloy steel welding rods and making teeth by grinding to make proper shape and size and shaft by machining and grinding of shaft etc as required

Removing/fitting the two rod of gear box from its joint with help of heavy and after making necessary alignment from the hydraulic press and complete grinding, welding and after oiling and greasing work required for refitting the same complete in all respects for required at site.

Testing and commissioning the Under Sluice gate no8 .

AVINAV TRADERS