(1) Capable of withstanding working pressures and stresses and compatible with the type of liquid stored; (2) Maintained in a manner that prevents leakage; (3) Isolated or separated from ignition sources to prevent fire or explosion; and. (3) Effective May 20, 2008, a miner's personal exposure to diesel particulate matter (DPM) in an underground mine must not exceed an average eight-hour equivalent full shift airborne concentration of 160 micrograms of total carbon per cubic meter of air (160TC g/m3). A miner's personal exposure to asbestos shall not exceed an 8-hour time-weighted average full-shift airborne concentration of 0.1 fiber per cubic centimeter of air (f/cc). (c) Any place where the train operator's vision is obscured. Vertical shafts shall be considered secure. 57.14160 Mantrip trolley wire hazards underground. (g) Unless a decision by the Administrator for Metal and Nonmetal Mine Safety and Health, or the initial decision of the Administrative Law Judge, is appealed within 30 days, it becomes final, and is not subject to judicial review for the purposes of 5 U.S.C. NFPA No. (iii) Filters certified by NIOSH for DPM. (1) Persons in shafts and slopes underground; (2) Persons with an incline hoist on the surface; or. (3) Evacuation. The control handle shall be clearly labeled to indicate that its intended function is for emergency stopping only. The concentration of methane in such mines is explosive or is capable of forming explosive mixtures if mixed with air as illustrated by Table 1 below, entitled Relation Between Quantitative Composition and Explosibility of Mixtures of Methane and Air. Man cages and skips used for hoisting or lowering employees or other persons in any vertical shaft or any incline shaft with an angle of inclination of forty-five degrees from the horizontal, shall be covered with a metal bonnet. Areas around explosive material storage facilities. Flash point. (b) An approved and properly maintained self-contained breathing apparatus system which shall consist of a mask connected to compressed air stored in containers adjacent to the hoist controls. (2) So that a fire or explosion in the storage facilities will not prevent escape from the mine, or cause detonation of the contents of another storage facility; (3) Out of the line of blasts, and protected from vehicular traffic, except that accessing the facility; (4) At least 200 feet from work places or shafts; (5) At least 50 feet from electric substations; (6) A safe distance from trolley wires; and. 3, 2006]. (b) However, this standard does not apply to reciprocating-type air compressors rated over 10 horsepower if equipped with fusible plugs that were installed in the compressor discharge lines before November 15, 1979, and designed to melt at temperatures at least 50 degrees below the flash point of the compressors' lubricating oil. (4) At drum crossover and change-of-layer regions. Igniter cord means a fuse, cordlike in appearance, which burns progressively along its length with an external flame at the zone of burning, and is used for lighting a series of safety fuses in the desired sequence. 57.19067 Trips during shift changes. Actions at 0.25 percent methane (I-B, II-B, V-B, and VI mines). Both rails shall be bonded or welded at every joint and rails shall be crossbonded at least every 200 feet if the track serves as the return trolley circuit. When using open flames in other than fresh air, or in places where methane may enter the air current, tests for methane shall be conducted by a competent person before work is started and every 10 minutes until the job is completed. Electric equipment and circuits shall be provided with switches or other controls. (a) When the entire length of a conveyor is visible from the starting switch, the conveyor operator shall visually check to make certain that all persons are in the clear before starting the conveyor. All buckets shall be stopped after being raised about three feet above the shaft bottom. 21, 2003; 80 FR 52988, Sept. 2, 2015]. (b) The Secretary will collect samples of DPM by using a respirable dust sampler equipped with a submicrometer impactor and analyze the samples for the amount of elemental carbon using the method described in NIOSH Analytical Method 5040, except that the Secretary also may use any methods of collection and analysis subsequently determined by NIOSH to provide equal or improved accuracy for the measurement of DPM. Appendix I to Subpart T of Part 57Standard Applicability by Category or Subcategory, Cartridge-Operated Water and/or Antifreeze, Dry-Chemical, Stored Pressure, with Mild Steel Shells, Brazed Brass Shells, or Aluminum Shells, Dry-Chemical, Cartridge or Cylinder Operated, with Mild Steel Shells, Dry-Powder, Cartridge or Cylinder-Operated, with Mild Steel Shells, Welding or cutting with an electric arc or open flame. (i) Provide at all times at least the same degree of protection to persons underground as would be afforded by the installation of control doors; (ii) Be accomplished by a main fan. (c) The safety catches shall be inspected by a competent person at the beginning of any 24-hour period that the conveyance is to be used. Subscribe to: Changes in Title 30 :: Chapter I :: Subchapter K :: Part 57. 57.12011 High-potential electrical conductors. (5) Road surface traction is not impaired by weather conditions, such as sleet and snow, unless corrective measures, such as the use of tire chains, plowing, or sanding, are taken to improve traction. During performance of an activity underground described in Table C2 or when falling sparks or hot metal from work performed in a shaft, raise, or winze could pose a fire hazard, (a) A multipurpose dry-chemical fire extinguisher shall be at the worksite to supplement the fire extinguishing equipment required by 57.4600; and. Federal mining regulations contain few requirements relating directly to inspection and replacement of wire ropes that are not used to hoist persons. Diesel equipment shall be shut off or immediately removed from the affected area; and. (2) Tests for methane shall be made with hand-held methanometers, methane monitors, atmospheric monitoring systems, devices used to provide laboratory analysis of samples, or with other equally effective sampling devices. This provision does not apply to rail equipment. (b) A respirator program consistent with the requirements of ANSI Z88.21969, published by the American National Standards Institute and entitled American National Standards Practices for Respiratory Protection ANSI Z88.21969, approved August 11, 1969, which is hereby incorporated by reference and made a part hereof. (c) Power shall be deenergized in affected areas prior to making ventilation changes, except power to monitoring equipment determined by MSHA to be intrinsically safe under 30 CFR part 18. Unless damage or deterioration is removed by cutoff, wire ropes shall be removed from service when any of the following conditions occurs: (a) The number of broken wires within a rope lay length, excluding filler wires, exceeds either, (1) Five percent of the total number of wires; or. (b) Under this standard, the following may be present in the hoist house in quantities necessary for the day-to-day maintenance of the hoist machinery: (1) Flammable liquids in safety cans or in other containers placed in tightly closed cabinets. 57.22214 Changes in ventilation (I-A, II-A, III, and V-A mines). (a) The mine atmosphere shall be tested for methane at least once every seven days by a competent person or an atmospheric monitoring system, or a combination of the two. 57.12037 Fuses in high-potential circuits. Drill operators shall not start or move drilling equipment unless all miners are in the clear. Surface buildings or structures in which persons work shall have a sufficient number of exits to permit prompt escape in case of fire. Learn more about the eCFR, its status, and the editorial process. [1] Measured by the American Society for Testing and Materials, ASTM D 317582, Standard Test Method for Volatile Matter in the Analysis Sample of Coal and Coke. (2) The torque of the first bolt, every tenth bolt, and the last bolt installed in each work area during the shift shall be accurately determined immediately after installation. Persons shall not be hoisted at a speed faster than 2,500 feet per minute, except in an emergency. (2) Detached structures located outside the blast area and a sufficient distance from powerlines so that the powerlines, if damaged, would not contact the magazines. Drill crews and others shall stay clear of augers or drill stems that are in motion. (a) Except as provided in paragraph (b) and (c) of this section, self-rescue devices meeting the requirements of standard 57.15030 shall be worn or carried by all persons underground. 57.22603 Blasting from the surface (II-A mines). If levels of permissible exposures to concentrations of radon daughters different from those prescribed in 57.5038 are recommended by the Environmental Protection Agency and approved by the President, no employee shall be permitted to receive exposures in excess of those levels after the effective dates established by the Agency. (1) Installed on the surface in noncombustible housings provided with noncombustible air ducts; (2) Except in Subcategory I-A mines, provided with an automatic signal device to give an alarm when the fan stops. (a) Cutting and drilling equipment used at a face or bench shall be approved by MSHA under the applicable requirements of 30 CFR parts 18 through 36. When persons are hoisted, the signaling devices shall be attended until the crosshead has been engaged. [50 FR 4082, Jan. 29, 1985, as amended at 60 FR 35695, July 11, 1995; 71 FR 16667, Apr. 57.15014 Eye protection when operating grinding wheels. (3) Aluminum alloy fan blades shall not contain more than 0.5 percent magnesium. (e) The number and type of internal combustion engine units used underground, including make and model of unit, type of engine, make and model of engine, brake horsepower rating of engine, and approval number. (2) Effective January 20, 2007, a miner's personal exposure to diesel particulate matter (DPM) in an underground mine must not exceed an average eight-hour equivalent full shift airborne concentration of 350 micrograms of total carbon per cubic meter of air (350TC g/m3).

Joe Blystone For Governor Sign, Articles M