subject: The Safety Of Mining Machinery Is No Kidding [print this page] Large, powerful moving machinery processing thousands of tons of ore and rock in poorly lighted and confined work areas in underground mines, and in adverse weather conditions in surface operations, contribute to the hazardous nature of mining. Powered haulage and machinery accidents accounted for 47% of all mining fatalities and 22% of all non-fatal days lost injuries in the mining industry from 2004 to 2008. These accidents are frequently the result of poor visibility near mining equipment, machinery entanglements, slipping and tripping, operator error, and hazards associated with equipment maintenance. The Machine Safety program attempts to understand the machine system requirements and specifications and to address the human interface issues involving the operation and maintenance of the equipment.
When mining machines are used for a period of time, we should do standing test and maintenance, so that we can guarantee machine safety operation and prolonging service life. As for flotation separator maintenance, the general provision is that overhaul every 12 years for, 2 times one year for medium maintenance. And for minor repair, generally two times one year. But when comes to the bad working conditions, the minor repair should be four times one year.When several sets of machines start at a time, operators should start one by one and from large ones to small ones. If you have to start one machine several times, you must obey the relative operation rules and shall leave appropriate stop time. In order to prevent overheated, the number of successive starting times shall not exceed 35.Knife gate operator should stand by the side. When starting mining equipment, no person should be around. In order to prevent arc burn, operators are required to comply with the operation rules in these situations, such as starting machine, using double knife start machine, star point or auto-voltage-reduced starting.
Regular testing of mining machinery
1. Observe the machine overheated phenomena. 2. Observe equipment amperage rating. 3. Pay attention to the change of power voltage. 4. Watch the equipment vibrating condition. 5. Watch the unbalance degree of three-phase voltage and three-phase currents. 6. Pay attention to sound and smell of equipment operation.
Watch out for machine stop accident. When that of things happened, you should cut off power at once. If one of following things happened to your machines, please stop machine for test.
1. Personal injury accident happens when operation. 2. The rotating speed slows down sharply, and at the same time, equipment give out heat and strange noise. 3. When the machine is at fire because of conveying device broken off. 4. The bearing of mining equipment exceeds the regulated heat value. And the current exceeds the regulated statement, or increased sharply. 5. Strong vibrating happens when in operation. 6. The standing maintenance of mining equipment.
We are committed to providing safe work areas, machinery and equipment; to providing information, instruction, training and supervision; and to providing personal protective equipment. We are committed to creating an injury-free workplace for employees, suppliers, contractors, partners and visitors alike.
