SPECIAL REPAIR FOR RENEWAL / REPLACEMENT OF EOT CRANE AT ADFCR GP AGAINST BER OF 509 ABW UNDER GE (EAST) AGRA

Dismantling of BER EOT cranes of 2 Ton capacity Double girder complete including all accessories i.e. (Motor, Gear Box, Chain pully, Steel rope, Brake, VVVF drive, Pendent push button with remote, control panel, cable, girder, lifting hook, bolts/nuts etc any item related to EOT cranes from location and making good to the disturbed surface and depositing all materials at MES store yard complete all as specified and directed by Engineer-in-Charge.

Design, manufacturing, supply, erection, commissioning & testing of indoor type, medium duty class M5, Electrically operated travelling (EOT) overhead crane as per IS:3177 & 807(latest version), IS:2148 of 2004, capable of handling SWL 2 metric tonnes (MT) at ADFCR Gp 509 ABW suitable for operation on 415 Volts, 3 Phase, 4 wires, 50 HZ supply,main hoist with centre to centre clear span approximate 8 metres, double box girder type main gantry girder with necessary steel corridor including floor operated moveable pendant control by means of push buttons independent of crab trolley position, protective panel with down shop lead (DSL), trailing cable complete with all accessories/ equipments duly painted with two coat of synthetic enameled epoxy paint all as per OEM specifications and as approved by Engineer-in-Charge complete all as specified and directed.

EOT crane shall be provided with the following electrically controlled movements type:- (i) Capacity of crane : 2 Ton double box girder (ii) Clear span : 8 Metres approx each. (iii) Bay length: 13 Metres approx. (iv) Hook height : 5 Metres from the floor level. (v) Longitudinal Travel speed : 5 mpm and micro LT speed 0.5 mpm (vi) Cross travel speed : 3 mpm and micro CT speed 0.5 mpm (vii) Hoisting speed : 1 mpm (viii) Micro hoisting speed : 0.5 mpm (ix) Control : Pendant control & Radio Remote Control. (x) LT wheel size : Suitable for existing rail/track. (xi) CT wheel size : Suitable for existing rail/track.

(xii). The details of RCC brackets, end plates etc shall be verified by the contractor and shall certify that these are sufficient and meets the requirement of his design & submit test report to department along with sample approval. (xiii). The shop floor environment will be dust prone, humid, welding fume filled and ambient temperature going up to 50ºC. Weather conditions are tropical. Crane shall be kept in the normal shop floor condition without any temperature controlled enclosure / shop. Max. temperature variation is 25 deg Celsius in 24 hours.Ambient Temperature: 4º C - 50º C & relative Humidity: 55%. (xiv). Major Technical specifications of the crane are given below. These are to be complied with by the contractor / manufacturer. The parameters which are not specified are to be as per Contractors'/OEM's own design. The contractor shall submit following drawings, giving all design parameters and get the drawings approved from the Accepting Officer for all cranes with in one month after acceptance of the contract. (xv).Contractor should physically visit the site & ensure the ground conditions before quoting the tender. (xvi).Any civil work i.e. dismantling the walls/reconstruction of walls etc. making good the existing wall to be done contractor with out extra cost. (xvii).Any minor changes required at site should be included in the rate quoted by contractor. (xviii).Contractor should replace the cranes without disturbing any structure,lab equipments necessary tools & plants to be consider accordingly without extra cost. (xix).Clear span and bay length specified and shown on building are only indicative. The tenderer shall visit the site and ascertain exact span and bay length before designing/execution. (xx).Unit rate quoted shall be deemed to include provision of copper wiring of suitable size in rigid metallic conduits with accessories fixed on surfaces from main switch upto electrical control panels and provision of ISMC channel welded alongwith ISMB (gantry girder) and longitudinal travelling rail welded alongwith ISMC. (xxi).For Maintenace & repairs of crane the cost for OEM recommendation cranes ladder for all cranes as per site conditions should be included in the contractor quoted rate. (xxii).Maintenance / service platform made of 6.0 mm thick chequered plate of 750 mm width shall be provided & fixed through bolted joints only. A hand railing 1000mm height are to gaurd (minimum 50mm) shall also be provided. Platform shall have anti-skid grating and the same cost should be included in the contractor quoted rate.

Mechanical Joints: Fit Bolts (as per IS 3640 –1982) for all joints coming in main members. Heat Treatment & NDT Examination: The Trolleys shall be stress relieved, if necessary, by thermal heat-treatment process after welding & NDT. All welding shall be tested by NDT means [MPI, LPI & RT] after stress relieving operation (Govt. approved Test House & and production of certificate). Manufacturer to furnish the details of facilities for Heat Treatment furnace & NDT Lab at their works. All the welded joints shall be NDT tested by Govt. approved Test House & certificate / X-Ray films to be submitted at time of inspection. Gear & Gear Boxes Details: Gear Box should be of fabricated type duly stress relieved. Pinions made of En 24 and gears of En 18. Gears in all the Stages shall be helical in design and to be of machined, lapped and hardened Straight and helical gearing shall normally be used for all motions.Worm and bevel gears shall not be used. First and high speed reductions shall be through helical gears. All first reduction pinions and also the other pinions if feasible shall be integral with the shafts. All gears shall be of hardened and tempered alloy or carbon steel with machine cut teeth. Gear tooth shall be cut in metric module system. Lubrication: Suitable lubrication system shall be provided for gear box, all rotating parts wherever applicable. Rope Drum: Shall be of fabricated type stress relieved or seamless pipe. The circumferential weld joints shall be tested by 100% XRay quality. The size of drum shall be as per OEM. Wheel :Track

wheels shall be of MS steel with casted phosper bronze at tread area and flange.Tread mean dia of wheel for cross travel shall be of forged steel and for long travel forged steel. Type of Coupling: Couplings shall be flexible geared Barrel type. No pin/bush/rubber type coupling to be used. Machining Operation: All mechanical mating surfaces and wheel seating areas are to be machined to the required finish and protected. Hoist Wire Rope Details: Fiber core confirming to IS: 2266. Mention Wire rope No. of fall -04 6x36 constructions with a minimum breaking load of 1770 N/MM SQ.

S&F Steel Tubes, light grade, galvanised, 40 mm bore with all fittings, and fixed to walls and ceiling or laid in floors etc complete all as specified and directed (This item will be required as and when earth contivity strip required beyond 7.5mfor any earthing).