Military Engineer Services Tender
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Technical
Technical
Class Of Bidder
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MES Class of contractor
Technical Capacity
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For contractors not enlisted with MES, the bidder should have satisfactorily completed requisite value works with Central/State Government/ Central/ State PSUs/ AWHO/AFNHB/ CGEWHO / DGMAP. The details of works completed and under progress in MES should be submitted in a specific format, which includes the value of the work. However, the exact percentage of similar works completed is not mentioned. For MES enlisted contractors, the bidder should be enlisted with MES in class ‘B’ and above and category ‘c (iii)’ subject to satisfactory remarks w.r.t performance in respect of works in hand reflected in Work Load return (WLR) circulated by competent engineer authority.
Costs
EMD
₹ 3,15,000Document Cost
₹ 2,000Tender Fee
Refer Documents
Description
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Contact
Tender Id
2025_MES_702731_1Tender No
CE RnD/DLI-34/CHANDI/2024-25Tender Authority
Military Engineer Services ViewPurchaser Address
-Website
http://http://mes.gov.in/
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BOQ Items
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Item No 2.00 Contd..//
(xx) Gears 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 spur 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. Surface hardening of teeth is not allowed. The Gears / pinions should be hardened to HRC 50-55 and ground. Please note that gears and pinions must have pressure angle of 20° only.
(xxi) Brakes:- Brakes for all drives shall be Electro-magnetic shoe/hydraulic thruster brakes according to the application.
(xxii) End carriages: End carriages with standard wheel bases fabricated using the modern welding and machining techniques to ensure jerk free and smooth travel motion. The wheels shall be double flanged, supported on self aligning anti-friction bearings, Buffers shall be provided at the ends of the carriage as per IS Standards.
(xxiii) Wheels: Wheels shall be of forged and made of C55 Mn75 Carbon steel, Hardened to BHN 300-350 (xxiv) Lubrication: Suitable lubrication system shall be provided for gear box, all rotating parts wherever applicable. Details of the same to be furnished indicating the type & quantity of Lube Oil & grease etc.
(xxv) Rope Drum: Shall be of fabricated type stress relieved or seamless pipe. The circumferential weld joints shall be tested by 100% X-Ray quality (Please mention the size). (xxvi) Type of Coupling: Couplings should be flexible geared Barrel type. No pin / bush / rubber type coupling to be used.
(xxvii) Machining Operation: All mechanical mating surfaces and wheel seating areas are to be machined to the required finish and protected.
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Item No 2.00 Contd..//
(xxviii) Input Power Supply: Shall be 415 ± 10% Volts, 50 ± 3% Hz, 3 Phase, AC. (xxix) Control Voltage: Shall be 110V AC.
(xxx) Protection: All Panels, Limit- Switches and Motors shall have IP 54 protection. Motor Details: Squirrel Cage Induction Crane duty motors, Totally enclosed, fan cooled, Insulation Class-F & confirming to relevant latest IS:325, and IS-123, S4 duty, 150 starts per hour and 40% CDF. Contractor to provide other details like No. of motors, capacity of motor, Frame size, make, type and No. of poles etc. (xxxi) Wiring: All the panel wiring should be done by using standard multi core Copper highly flexible, double insulated cables and of Butyl Rubber. (xxvii) Type & details of Brakes for all motions: Conical rotor type or "Fail to safe" action type Electromagnetic shoe / disc brakes type to be provided to hold the mechanism in position instantaneously as soon as the power supply is 'OFF' either accidentally or intentionally for all motions.
(xxxii) Electric Contactors: shall have SIEMENS / L&T / GE contactors suitable for Crane operations.
(xxiii) Contactors Rating:- The rating of all Contactors shall be at least 50% higher than the respective electric motor full load current, at the specified duty cycle.
(xxxiv) Earthing for Electrical items in Crane: Shall be carried out as per IS. (xxxv) Trailing Cables/Rubber Cables: Trailing cables/Rubber cables (Extra flexible having copper conductors only) should be travelling on rollers moving on separate IBeam parallel to Bridge Girder and both for LT & CT and from ground panel to panel of crane shall be supplied and Erected by contractor.
(xxxvi) Limits Switches: Hoist shall be provided with both rotary and counter weight type (Over Hoisting and Over lowering) Shunt, adjustable type limit switches. Limit switches shall be provided for both CT & LT. Two way lever type for CT both direction and LT both direction. Supply and Erection of DSL: The details of DSL to be provided by Contractor for CT & LT and in scope of Contractor.
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Item No 2.00 Contd..//
(xxxvii) Pendent: Pendent should be of Die cast Aluminium or Hard un-breakable plastic having push buttons for each motion e.g. Bridge light, Siren/bell On and off switches and stay put type emergency stop switch along with mode (RRC or Pendant) selector switch. Pendent shall be hanged in the middle of Bridge Girder with Chrome plated steel chain & duly covered with sleeve. (xxxviii) All other incidental, Civil, Electrical and Mechanical works other than specified above but required at site will be done by contractor.
(xxxix) LT Panel : Ground LT panel of required rated capacity as per installed crane with MCCBs and other accessories will be supplied by contractor and rate is deemed to included in above rate.
(xl).Type, Capability and general requirements: Type: Double Girder Box Type EOT Crane as per IS: 807 & IS: 3177 (latest version) Crane Operation: Through Radio Remote Control as also with Pendant control of Reputed Make with Push Button for ON, OFF, UP, DOWN, Forward, Reverse, Left, Right, Siren, Bridge Light & Emergency Stop with option for control selection. Operating Voltage 24Volts, all will be submitted by contractor for approval of Garrison Engineer.
(xli) Illumination: 2 Nos. of not less than 35 Watts LED Lamps & fittings shall be provided under the Bridge and 1 No. shall be provided under CT Trolley. Fittings shall be of non-integral type. (Total lights 3 Nos.).
(xlii) Painting Instructions: (a) Surface Cleaning: Girder to be shot blasted or chemically treated for surface cleaning, after completion of all operations but prior to painting. Contractor to furnish the details of facilities for Shot Blasting M/c at their/OEM's works. (b) Painting: One coat of Red Oxide Primer with 25 micron DFT (Dry Film Thickness) and 48 hours of compulsory curing after painting (c) The crane should be thoroughly cleaned and final painting with two coats of Corrosion Resistant Enamel Paint (Colour –Golden Yellow) each with a DFT of 25 micron and intermittent curing of 16 hours. Final touching will be done after erection & commissioning at site if required.
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Item No 2.00 Contd..//
(xliii) Environment condition:- The shop floor environment will be dust prone, humid, Corrosive (Due to coastal area)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. Sound level should be minimum and the crane should have decent aesthetic look. Ambient Temperature: 4º C - 50º C & relative Humidity: 95%
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Design, supply, installation, testing and commissioning of electrically operated, overhead travelling (EOT) cranes of capacity 20 Ton for main hoist and 2 Ton for mini hoist ,double girder, with a span 8.5 m, lifting/hook height 8 m, bay length 19.60m, floor operated conforming to IS : 3177 (latest revision), suitable for operation on 415 Volts, 3 Phase, 4 wires, 50 HZ supply, double girder box type, on existing steel supporting structures, with Hoisting, Cross Travel (CT) , and Long Travel (LT) with micro drives through VVVF drives with control panel, power and controlling cables, confirming to relevant ISs, controlled by pendent push button station and radio remote control switch of operation, with and including the followings: - (i) Duty Class: M5 for Indoor operations.
(ii) main hoist Lifting Capacity: 10 Ton.
(iii) mini hoist Lifting Capacity: 02 Ton (iv) Span:8.50 Metre.
(v)Hook Height : 8.0 Meter.
(vi) LT Wheel Rail Track Size: R-52.
(vii) Bay Length: 19.60 Meter.
(viii) Clearance between Rail Top to Enclosure Roof: As per design approved. (ix) Hoist: Hoist should be as per IS: 3938 (latest version). Only Low Head Room Hoist shall be acceptable. (x) Maximum Speed (Meter / Min.): (a) Hoisting: 3 (b) Cross Travel: 10 (c) Longitudinal Travel: 15. Rest all as per Srl No 2.01 to 2.05 here-in-before.
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Design, supply, installation, testing and commissioning of electrically operated, overhead travelling (EOT) cranes of capacity 10 Ton for main hoist and 2 Ton for mini hoist ,double girder, with a span 13.5 m, lifting/hook height 8 m, bay length 35.77m, floor operated conforming to IS : 3177 (latest revision), suitable for operation on 415 Volts, 3 Phase, 4 wires, 50 HZ supply, double girder box type, on existing steel supporting structures, with Hoisting, Cross Travel (CT) , and Long Travel (LT) with micro drives through VVVF drives with control panel, power and controlling cables, confirming to relevant ISs, controlled by pendent push button station and radio remote control switch of operation, with and including the followings: - (i) Duty Class: M5 for Indoor operations.
(ii) main hoist Lifting Capacity: 10 Ton.
(iii) mini hoist Lifting Capacity: 02 Ton (iv) Span:13.50 Metre. (v)Hook Height : 8.0 Meter.
(vi) LT Wheel Rail Track Size: R-52.
(vii) Bay Length: 35.77 Meter
(viii) Clearance between Rail Top to Enclosure Roof: As per design approved. (ix) Hoist: Hoist should be as per IS: 3938 (latest version) of Only Low Head Room Hoist shall be acceptable. (x) Maximum Speed (Meter / Min.): (a) Hoisting: 3 (b) Cross Travel: 10 (c) Longitudinal Travel: 15. Rest all as per Srl No 2.01 to 2.05 here-in-before.
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Notes for item No. 2.00 to 4.00 :-
(1). The crane is to designed by the contractor/OEM/Manufacturer. Major Technical specifications of the crane are given above. These are to be complied with by the contractor/OEM/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 Garrison Engineer. The drawings shall be complete in all respect.
Drawing :- (a) GA Drawing of the Crane (for approval). (b) GA Drawing of Hoist / Trolley (for approval). (c) Calculations for Bridge Girder. (d) GA Drawing of Individual Mechanisms (for approval). (e) Drawings of Bridge, End Carriage, Leg and their connections. (f) Sub-Assembly Drawing for Wheels, Gear Boxes & Hoist. (g) Calculations for Selection of Electric Motors, Gears, Brakes, Couplings, Wheels, Wire Rope etc. (h) Design calculations for Bridge Girder, Crab etc. (i) Wiring Diagram with Logic Circuits and Bill of Material (for approval). (j) Cable Selection based on current rating. (2). The various dimensions given above are approximate. The contractor is advised to verify the ground details as well as visit the site of work for accurate measurements of these dimensions. In any case before undertaking fabrication work the contractor must ascertain the final finished dimensions. The subject crane is meant for the purpose of handling small to medium load of various components. The crane will be put to use for 365 Days’ continuous duty with CT, LT and Hoist movements . The department shall be responsible for providing suitably rated electrical outlet in the Main Electrical Control Panel/Main Distribution Board of the buildings . The contractor shall certify that these are sufficient and meets the requirements of his design.
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