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PRESENT-AMTS-SRK

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PRESENT-AMTS-SRK

  1. 1. Er. S.RATNAKER M.E, M.I.E. DDMS( MECH.) DGMS, DHANBAD Er. D.B.NAIK F.I.E Dy. DGMS(Mech) DGMS, DHANBAD
  2. 2. MINING EQUIPMENT PLAYS PARAMOUNT ROLE FOR IMPROVING OF PRODUCTION, PRODUCTIVITY AND SAFETY IN MINES. MECHANIZATION OF UNDERGROUND MINES IN INDIA HAS BEEN WITNESSING A RAPID TECHNOLOGICAL ADVANCEMENT THESE DAYS. USE OF FAULTY EQUIPMENT, TOOLS, INSTRUMENTS & MATERIALS HAD IN THE PAST RESULTED IN FEW ACCIDENTS, DISASTERS & DANGEROUS OCCURRENCES. THIS HAD LED TO FRAMING OF MINES SAFETY LEGISLATION, REQUIRING SPECIFIC APPROVAL FOR EQUIPMENT AND MATERIAL FROM “CHIEF INSPECTOR OF MINES”.
  3. 3. The developments in Mechanization of Underground Mines introduced following mining equipment for Shearing/Cutting/ Drilling of coal and removed the hazards associated with blasting of Coal: Longwall Equipment with Automation Continuous Miner with Diesel Utility vehicles Bolter Miner(CM with in-built Bolting system) Twin Boom Bolter Road header, etc
  4. 4. LONGWALL EQUIPMENT
  5. 5. CONTINUOUS MINER
  6. 6. ROAD HEADER
  7. 7. The following are the main Safety features to be provided in these equipment: Pre-start Warning with Audio Visual Alarm. Pull chord/ Push button type emergency system around the equipment near presence of man power. Stop button with locking system to prevent Un- authorized operation. Over-load tripping systems Protective Canopy, where ever required. Water interlock. Effective Dust suppression system.
  8. 8.  Suitable Fire suppression system.  Temperature monitoring and tripping system.  Low-oil level tripping system.  CH4 (Methane) monitoring system.  Interlocks for operations wherever required.  Only Fire Resistant Hydraulic Fluids and Fire Resistant High Pressure Hydraulic Hoses are to be used.  All the electricals used in the Equipment shall be of Intrinsically safe/FLP type and duly approved by DGMS.
  9. 9. Further, the advances in Mine transportation equipment introduced the following equipment for transportation of Men and Material: Low Profile Load Haul Trucks Diesel Utility Vehicles Shuttle Cars Mine Cruisers (Diesel operated) Mono rail transportation systems Manipulator
  10. 10. LOW PROFILE TRUCKS
  11. 11.  No equipment using either Electrical power or I.C. engine power shall be used in underground coal mines unless its Electricals and Internal Combustion Engine are of a type approved by the Director General of Mines Safety by an order in writing and is maintained in its designed condition.  All the FRHF’s, High pressure hydraulic hoses and Cables used in the equipment shall conform to the General Orders issued by DGMS.  The materials used in the equipment shall not be incendive to sparking.
  12. 12.  All Rubber-tyred Loaders and those crawler Loaders traveling at speed exceeding 4 kmph shall be fitted with adequate service brakes and suitable parking brake.  An audible warning device located conveniently near the operator such as gong bell or horn shall be provided on each machine.  Red light reflecting material such as fluorescent paint etc. should be provided on each end of all mobile machines.  Each machine shall be provided with headlight fittings on the front and rear of machine.  Each machine shall be provided with an audio visual alarm to be operated preferably automatically during movement in reverse direction.
  13. 13.  An efficient portable fire extinguisher of minimum 1 Kg capacity of appropriate type so placed as to be within reach of operator shall be provided on each machine.   A seat for SDL driver, and such arrangement of the controls that the driver can see ahead without leaning out of the SDL when running the SDL shall be provided.   A protective canopy or structure to protect the driver from falling objects or in event of a SDL overturning shall be provided.  A temperature gauge, temperature switch to cut off the power in event of hydraulic oil temperature exceeds safe limit.  A pressure gauge for hydraulic system shall be provided.
  14. 14.  A Filter condition indicator shall be provided  A foot operated dead man type switch shall be provided.  Low oil level tripping system shall be provided.  All electrically driven rubber tyred loaders shall be provided with a cable reeling drum for efficient and safe handling of electric cable the crawler mounted SDL should preferably be provided with cable reel for coiling the trailing cable.  Earth leakage Relay & Over Load Relay  Cable Reel Drum Door Interlock  Over Riding Limit Switch, Dump Valve, Foot Switch  Locking Arrangement for Stop Button  Bucket Arm Locking Pin
  15. 15.  No engine other than that worked by liquid fluid of Flash point not less than 680 c (1500 F) shall be used. The Engine will be of Compression Ignition type.  Any starting arrangement other than manual shall not be used unless permitted in writing by the Director General of Mines Safety.  A suitable air filter to clean the air entering the engine.  A suitable flame arrester between the air cleaner and the inlet manifold of the engine and so attached as to be capable of being readily removed for inspection, cleaning or repair.  A suitable exhaust conditioner on the exhaust system to cool, dilute and render the exhaust gases harmless. Conditions for Diesel Engines
  16. 16.  The final diluted exhaust gases shall be discharged in such a manner that they are directed away from the operator’s compartment and also away from the breathing zones of persons likely to be along side , the locomotive.  A suitable flame arrester on the exhaust system to prevent emission of flame or sparks or discharge of heated particles to be positioned after the exhaust conditioner and so attached as to be capable of being readily removed for inspection, cleaning and repair:  Provided that if the exhaust air conditioner is of such a design that it does not require provision of separate flame arrester, the Director-General of Mines Safety subject to such conditions as may approve the arrangement he may specify in writing.
  17. 17. A safety device to automatically shunt off fuel supply to the engine Immediately if the temperature of the exhaust gases discharged from the conditioner exceeds 850 c. A safety device to automatically shut off fuel supply to the engine immediately if the water level in the conditioner falls below safe level prescribed by the manufacturer and prevent restarting of the engine until the water level is replenished. An attachment for a pressure gauge for measuring the back pressure in the exhaust system and for connecting a suitable gas sampling equipment. The cooling system for exhaust gases shall be constructed of corrosion resistant material.
  18. 18.  Globalization and liberalization has resulted in the relaxation of import of Mining equipment and at the same time, the Foreign Manufacturers are ready to supply their existing products with required modifications to suit the mine conditions.  While underground equipment should be selected to suit the mine, it is equally true that the mine should be designed to suit the equipment.  It is impossible to begin mine planning and scheduling without a good idea of the type and size of equipment.
  19. 19. The most important questions to be considered while selecting any Underground Mining equipment include: Whether the standards followed in Design of the Equipment are at par with your country standards or Internationally accepted standards? Whether the Equipment/sub-assemblies conform to the Statutory obligations of the Regulatory bodies of your country? Whether the Testing of the equipment was carried out at any Internationally accredited laboratory conforming to any Internationally accepted standard?
  20. 20. Whether the equipment is suitable to the proposed Mine conditions? parameters like: Geo-mining parameters (gradient, seam thickness, width of galleries, etc) Physcio-Mechanical properties of roof and floor (Strata and ground pr.), Strength of Coal Mine Environmental conditions (Temperature, Humidity and Dust) Transportation route Gassiness Quality of ground water
  21. 21. Does the equipment is provided with the required safety devices and interlock arrangements to ensure the safety of the working personnel/equipment. Does the Manufacturer is capable of preparing Risk assessment of the equipment considering the Mine conditions? What kind of training and certification would be provided to operators and maintenance personnel by the Manufacturer? Does the manufacturer have service facilities with trained personnel to reach your mine within an hour or two by road? If not, is it willing to establish such facilities on the basis of your order?
  22. 22. Does the manufacturer provide spare parts in your mine store on a consignment basis, so that you may pay only when they are used? Does the manufacturer stock a comprehensive range of spare parts in country for the specific model that you are buying? What would be the likely delivery time? What is the reputation of the manufacturer for service and spares backup in your region? How long would it take to obtain major components if needed, which are not stocked in the country and what would be the cost of its urgent air freight?
  23. 23. Does the manufacturer offer maintenance and consumables on a fixed cost per hour or per metre or per ton basis, establishing its own maintenance workforce on site? Whether the level of technology or automation used in the equipment can be understood and supported by the operators and maintenance team? Whether the Equipment can be transported to the workplace without any hurdles? What is the previous Performance and Reliability of the Equipment?
  24. 24. Conclusion: It is better to plan the mine with a fleet of Equipment with standardization so that Interchangability is possible. In general, the longer the supply lines to the mine and the less educated the workforce, the more robust and less innovative should be the technology.
  25. 25. THANK YOU EQUIPMENT SAFETY PERSONNEL SAFETY PRODUCTIVITY PROSPERITY OF NATION With my sincere gratitude to Sri. Rahul Guha Director General of Mines Safety

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