i. Supplier may visit to the site and get familiarized with the exact requirements

Transcription

1 2. Design, Fabrication, Supply, Installation, Commissioning, Warranty of Control Panel for 5 Te Outdoor Semi Gantry Crane in adherence to attached specifications, dismantling & removal of the existing pedestal mounted control panel. (A brief detailing on the 5 Te Outdoor Semi Gantry Crane is provided at the end of this document) Detailed Specifications: i. Supplier may visit to the site and get familiarized with the exact requirements prior to design. The visit to site shall be planned at least with advance information of 2 days. Interim visits are also envisaged. ii. The panel will be located on outdoor sea face corrosive atmosphere. Panel material shall not be affected by sunlight or rains or temperatures. iii. The panel shall be designed to cater the protections, crane controls including radio remote, power supplies and controls for crane auxiliaries/accessories. The components required for Protective Panel, Main Hoist Panel, Long Travel Panel, Cross Travel Panel, etc. shall be accommodated in the panel. iv. Supplier shall provide New Base platform on Girder which can be welded on the Long travel Support Platform of the crane so as to support & take the load of the Power, control panels and atleast additional weight of about 200 Kg. v. The panel power supplies will be 415Vac, 3- phase, 50 Hz. Single source. The panel shall derive its control power supplies from this power source as well as the supplies for various drives, brake, etc. It shall be equipped with internal space heater and illumination circuits. vi. The panel shall be designed for minimum IP-56 protection class. vii. The design drawings shall be submitted to NPCIL for approval prior to fabrication of the panel. The design/engineering drawings shall consist of the following. i. General Arrangement (GA) Drawings ii. Design Drawings(DD) Drawings iii. Terminal Lists (TL) iv. Electrical Wiring Diagrams v. Electrical Drawings vi. Bill of Material viii. The material/components selected for the crane panel fabrication shall be approved prior to fabrication from NPCIL with detailed catalogues. The supplier shall also provide critical spares list with required quantity for a period of 5 years of trouble free operation. e. Fabrication: i. All the components required for functioning of Protective Power Panel & control panels should have been installed & wired as per drawing submitted

2 and approved from NPCIL. Also, the control & power cables should have ferrules as per drawing indicating the cross terminations of all the wires. ii. The material of the panel and the base platform shall be Sheet Steel of 1.6mm ±0.2mm thickness, pre-treated and Hot dipped Galvanized as per IS with average mass of Galvanization not less then 610 gm/m 2. Supplier shall provide self certification in this context. iii. Mounting screws, nuts, handle for door must be cadmium plated. iv. The Variable Voltage Variable Frequency Drives should be provided for Main Hoist, Cross Travel & Long Travel. v. Dynamic Braking resistors for each motion i.e. Main Hoist, Cross travel & Long Travel suitable with VFD drives shall be rustproof unbreakable grid type suitable for starting and regulating duty, intermittent rated. vi. Automatic reset type of Rotary Geared, Safety Switches & Lever type limit switches shall be provided to prevent over travel for each of the following notions: (d) Right and Left travels of the bridge. (e) To and Fro travel of the trolley. (f) For Up and Down motions of the main hook. The limit switches & safety switches should be as per existing arrangements. Four (4) 15 Amp Non-fusible air break isolating switches will be fitted at the four corners of the crane so as to be accessible while standing on the crane platform. vii. Radio remote control suitable for all operations as specified in the drawing. The details of remote control to be provided along with the channel number for proper identification. The radio remote transmitter & receiver shall be having designed such that the IP classification is not less than IP65. viii. Supply of Control Cable & power cables between Panel & Components: i. Supply of Lighting Cables: Lighting cables for all provisions of Lighting given in the drawing is to be provided as per existing drawing. ii. Supply of Control Cables: The cable and wires shall be 1100V grade PVC insulated and PVC sheathed Aluminium conductors for power wiring and with standard cropper conducts for control circuit wiring. iii. Supply of Power Cables: Wiring adjacent to resistors and control panel wiring shall be of standard 1100V grade flame heat and moisture resistance, insulation suitable for operation a high temperature. Wires for motor primary and secondary circuits shall have adequate current carrying capacity to carry maximum plugging current of the motors. All wires shall terminate in approved lugs or

3 other approved devices which will maintain good connection under rough usage. ix. Power cable for Warning Horns & Crane Under bridge Lighting should be Provided. x. Non-corrosive Cable trays/conduits shall be used for routing of the power and control cables. f. Supply, Installation & Commissioning: i. Complete panel, with all internal wiring, after NPCIL QA checks shall be shipped to TAPS # 3&4. The approved critical spares for a period of 5 years of trouble free operation also shall be supplied along with the panel. ii. Trained Manpower adequate to install the panel and commission the same within a period of 4 working days shall be deputed to Tarapur Maharashtra Site. iii. Supplier will have to arrange for lodging, boarding, transport, insurance, safety training, protective gear, etc. of deputed personnel. iv. The supplier also will have to provide tools and equipment required for installation & commissioning at Tarapur Maharashtra Site on returnable basis. v. The panel shall be shifted from TMS stores to the installation area by the supplier under his own arrangements. Vehicles can be provided subject to availability. vi. Supplier shall demonstrate all tests and safety operations on the commissioned new panel with all existing features working. Commissioning shall be considered completed only after crane is load tested. vii. Load testing will be carried out by NPCIL in presence of Party representative executing the job. viii. The existing panel shall be dismantled without any damage to the crane structure and deposited to the TMS stores. g. Warranty: The supplier shall provide 12 monthly preventive maintenance visits and all breakdown maintenance calls in lieu of One Year warranty.

4 Pictures depicting existing Crane

5 MANUALLY OPERATED SEMI-GANTRY CRANE 1. CRANE TAG NO. 4& HOT-1 2. LOCATION SERVICE WATER PUMP HOUSE BAY 3. TYPE OF INSTALLATION OUTDOOR 4. CLASS OF CRANE CAPACITY TONNES LIFT METRES CRANE SPAN METRES HEAD ROOM METRES LENGTH OF RUNWAY METRES TOTAL LIFT METRES SPEED MAIN HOIST : 4 M/MIN CREEP HOIST : 0.4 M/MIN CT : 17 M/MIN CREEP CT : 1.7 M/MIN LT : 10 M/MIN CREEP LT : 1.0 M/MIN 12. TYPE OF HOOK SINGLE C 13. MOTOR CT/CREEP : 0.55 KW LT/CREEP : 0.95 KW MH/CREEP : 5.5 KW 14. HOISTING BRAKES TO HOLD 1.5 TIMES LOAD 4) FIXED CABLES (PVC-AL-ARM) e) 3 ½ C x 50 mm 2 f) 3 C x 25 mm 2 g) 3 C x 10 mm 2 h) 3 C x 6 mm 2 5) CONTROL CABLES (PVC-CU-ARM) e) 20 x 2.5 mm2 f) 20 x 2.5 mm2 g) 10 x 2.5 mm2 h) 12 C x 2.5 mm2 Typically Cables Used in Cranes: 6) FESTOONED CABLES (PVC-CU-FLEXIBLE) a) 3 ½ C x 50 mm2 b) 3 C x 10 mm2 c) 3 C x 4 mm2 d) 3 C x 2.5 mm2 e) 19 C x 2.5 mm2 f) 8 C x 1.5 mm2