In environments exceeding 1.0 WL, miners shall wear respirators approved by NIOSH for radon daughters prior to July 10, 1995 or under the equivalent section of 42 CFR part 84 and such respirator use shall be in compliance with 57.5005. (a) The mixing of ingredients to produce explosive material shall not be conducted underground unless prior approval of the MSHA district manager is obtained. Fuse tongs or hotline tools, shall be used when fuses are removed or replaced in high-potential circuits. will bring you directly to the content. Riding the bail, rim, bonnet, or crosshead. (b) Circular saws and chain saws shall not be equipped with devices which lock-on the operating controls. Ground moisture may be present to the extent that it does not adversely affect the braking surface. (1) Stored in a manner to facilitate use of oldest stocks first; (2) Stored according to brand and grade in such a manner as to facilitate identification; and. Source: 50 FR 4082, Jan. 29, 1985, unless otherwise noted. Storage tank means a container exceeding 60 gallons in capacity used for the storage of flammable or combustible liquids. Suitable warning shall be given before molten metal is poured and before a container of molten metal is moved. All mines shall be ventilated mechanically. (b) Seals shall be of substantial construction. 5. Intoxicating beverages and narcotics shall not be permitted or used in or around mines. If you would like to comment on the current content, please use the 'Content Feedback' button below for instructions on contacting the issuing agency. 57.6302 Separation of explosive material. (b) At the completion of each inspection or test required by this standard, the person making the inspection or test shall certify that the inspection or test has been made and the date on which it was made. Blasting circuits shall be protected from any contact between firing lines and overhead powerlines which could result from the force of a blast. (c) Records of inspections and repairs shall be kept in accordance with the requirements of the ASME Boiler and Pressure Vessel Code and the National Board Inspection Code. (iv) An observer to signal when it is safe to back up. (h) At least two persons shall be present when lighting safety fuse, and no one shall light more than 15 individual fuses. Alternative measures are not permitted. No person shall operate a hoist unless within the preceding 12 months he has had a medical examination by a qualified, licensed physician who shall certify his fitness to perform this duty. developer resources. (b) Vehicles and equipment shall not be driven over explosive material or initiating systems in a manner which could contact the material or system, or create other hazards. Except as provided by standard 57.5005, persons shall not be exposed to air containing concentrations of radon daughters exceeding 1.0 WL in active workings. Before hoisting persons and to assure that the hoisting compartments are clear of obstructions, empty hoist conveyances shall be operated at least one round trip after. (2) Upon request from an authorized representative of the Secretary of Labor, the Secretary of Health and Human Services, or from the authorized representative of miners, mine operators must promptly provide access to any record listed in the table in this section. (1) Any record listed in this section which is required to be retained at the mine site may, notwithstanding such requirement, be retained elsewhere if the mine operator can immediately access the record from the mine site by electronic transmission. Working place means any place in or about a mine where work is being performed. The wood construction shall be covered on all sides and edges with no less than 24-gauge sheet steel. 57.9330 Clearance for surface equipment. (2) Automatically deenergize electrical equipment, except power to monitoring equipment determined by MSHA to be intrinsically safe under 30 CFR part 18, and prevent starting such equipment when methane levels reach 1.0 percent; and. Continuity and resistance of grounding systems shall be tested immediately after installation, repair, and modification; and annually thereafter. learn more about the process here. 57.19063 Persons allowed in hoist room. (5) Emptied at the end of each shift with the contents returned to a magazine or other storage facility, or attended. (b) All piping, valves, and fittings shall be. If inconsistent with the general definitions in this section, the definition in the subpart will apply in that subpart: Abandoned areas means areas in which work has been completed, no further work is planned, and travel is not permitted. Initiation systems shall be used in accordance with the manufacturer's instructions. (a) Workplaces, passageways, storerooms, and service rooms shall be kept clean and orderly; (b) The floor of every workplace shall be maintained in a clean and, so far as possible, dry condition. (a) The hoisting standards in this subpart apply to those hoists and appurtenances used for hoisting persons. (c) Certification of examinations shall be made by signature and date. Buckets used to hoist persons during vertical shaft sinking operations shall. (b) Main facilities used to store explosive material underground shall be. 552(a) and 1 CFR part 51. Fires shall not be lit underground, except for open-flame torches. Internal combustion engines shall be switched off before refueling if the fuel tanks are integral parts of the equipment. The requirements of this standard apply to surface areas only. Open flames shall not be used in atmospheres containing 0.5 percent or more methane. Horns and backup alarms for surface equipment. Damaged or deteriorated explosive material shall be disposed of in a safe manner in accordance with the instructions of the manufacturer. (c) When nonelectric initiation systems use gas tube, continuity of the circuit shall be tested prior to blasting. 57.19056 Availability of hoist operator for automatic hoists. 57.6309 Fuel oil requirements for ANFO. Location of explosive material storage facilities. Valves on compressed gas cylinders shall be protected by covers when being transported or stored, and by a safe location when the cylinders are in use. Identity of PLHCP and most recent written determination of miner's ability to wear a respirator. 1 For example, at least a 36-inch length of 40-second-per-foot safety fuse or at least a 48-inch length of 30-second-per-foot safety fuse would have to be used to allow sufficient time to evacuate the area. It may be examined at any Metal and Nonmetal Mine Safety and Health District Office of the Mine Safety and Health Administration, and may be obtained from the publisher, the National Board of Boiler and Pressure Vessel Inspectors, 1055 Crupper Avenue, Columbus, Ohio 43229. 57.22233 Actions at 0.5 percent methane (I-C mines). Railed landings, backguards, and other protection for fixed ladders. 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. The framework assembly of the door and the surrounding bulkhead, if any, shall be at least equivalent to the door in fire and air-leakage resistance, and in physical strength. (1) This paragraph does not apply to car droppers if they are secured with safety belts and lines which prevent them from falling off the work platform. (b) Areas within 25 feet of main fans or booster fans shall be free of combustible materials, except installed wiring, ground and track support, headframes, and direct-fired heaters. 57.19066 Maximum riders in a conveyance. Other certifications shall be retained for one year. 57.4103 Fueling internal combustion engines. (b) Underground belt conveyors shall be equipped with a detection system capable of automatically stopping the drive pulley if slippage could cause ignition of the belt. 57.19103 Dumping facilities and loading pockets. (3) The mine operator must provide a confidential medical evaluation by a physician or other licensed health care professional (PLHCP), at no cost to the miner, to determine the miner's ability to use a respirator before the miner is required to be fit tested or to use a respirator at the mine. Receptacles or racks shall be provided for drill steel and tools stored or carried on drills. (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 rails are moved, replaced, or broken bonds are discovered, they shall be rebonded within three working shifts. Stray current means that portion of a total electric current that flows through paths other than the intended circuit. These candidates must complete an 8-hour IBEST class provided by an Illinois-approved electrical instructor and attain a minimum score of 80% on a written examination administered by a representative from the Department. 57.13001 General requirements for boilers and pressure vessels. Distribution boxes containing short circuit protection for trailing cables of approved equipment shall be approved by MSHA under 30 CFR part 18. 50 FR 4082, Jan. 29, 1985, unless otherwise noted. 57.11016 Snow and ice on walkways and travelways. Blasting agent means any substance classified as a blasting agent by the Department of Transportation in 49 CFR 173.114(a) (44 FR 31182, May 31, 1979) which is incorporated by reference. The mine operator or representative of the miners shall give notice of an appeal to the other party. switch to drafting.ecfr.gov. 57.8531 Construction and maintenance of ventilation doors. 57.4100 Smoking and use of open flames. [53 FR 32526, Aug. 25, 1988, as amended at 60 FR 35695, July 11, 1995; 71 FR 16667, Apr. Trailing cable and power-cable connections to junction boxes shall not be made or broken under load. When repair work which could produce a spark or flame is to be performed on a storage facility, (a) The explosive material shall be moved to another facility, or moved at least 50 feet from the repair activity and monitored; and. (4) Vented or otherwise constructed to prevent development of pressure or vacuum as a result of filling, emptying, or atmospheric temperature changes. (j) Publications. 57.12010 Isolation or insulation of communication conductors. (a) Preshift examinations shall be conducted within three hours prior to the start of the shift for which the examination is being made. Shaft means a vertical or inclined shaft, a slope, incline, or winze. 57.18028 Mine emergency and self-rescuer training. 57.19017 Emergency braking for electric hoists. Sec. Closed, nonconductive containers shall be used to carry explosives and detonators to and from blast sites. 57.9311 Anchoring stationary sizing devices. This incorporation by reference has been approved by the Director of the Federal Register in accordance with 5 U.S.C. Travelway. (2) Determined to be free of flammable gases by a flammable gas detection device prior to and at frequent intervals during the application of heat. or existing codification. 57.19017 Emergency braking for electric hoists. Movement of independently operating rail equipment. Transformer enclosures shall be kept locked against unauthorized entry. Braking systems on railroad cars and locomotives shall be maintained in functional condition. Safety Practices and Operational Procedures. 1 In this table, combustible material does not refer to installed wiring or track support. Metal fencing and metal buildings enclosing transformers and switchgear shall be grounded. (e) This standard is not applicable to rail beds. 57.15014 Eye protection when operating grinding wheels. Unless platforms or safety lines are used, persons shall not position themselves over drawholes if there is danger that broken rock or material may be withdrawn or bridged. The ramps and dumping facilities shall provide width, clearance, and headroom to safely accommodate the mobile equipment using the facilities. (c) Otherwise protected from mechanical damage. (2) Develop and implement a rock burst control plan within 90 days after a rock burst has been experienced. 57.19076 Maximum speeds for hoisting persons in buckets. Shaft sets shall be kept in good repair and clean of hazardous material. Other movable parts, such as booms, shall be mechanically secured or positioned to prevent movement which would create a hazard to persons. (g) Safety fuse shall be ignited only with devices designed for that purpose. information or personal data. (1) Securely by clips after making one full turn around the drum spoke; (2) Securely by clips after making one full turn around the shaft, if the drum is fixed to the shaft; or. This publication may be obtained from the American Conference of Governmental Industrial Hygienists by writing to 1330 Kemper Meadow Drive, Attn: Customer Service, Cincinnati, OH 45240, http://www.acgih.org, or may be examined in any Metal and Nonmetal Mine Safety and Health District Office of the Mine Safety and Health Administration. The framework assembly of the door and the surrounding bulkhead, if any, shall be at least equivalent to the door in fire and air-leakage resistance, and in physical strength. ROPS shall be installed on the equipment in accordance with the recommendations of the ROPS manufacturer. Attended means presence of an individual or continuous monitoring to prevent unauthorized entry or access. (c) At permanent storage areas for combustible liquids, means shall be provided for confinement or removal of the contents of the largest storage tank in the event of tank rupture. 57.4203 Extinguisher recharging or replacement. Areas where health or safety hazards exist that are not immediately obvious to employees shall be barricaded, or warning signs shall be posted at all approaches. Pumping equipment and analytical instruments shall be located in intake air. The operator must retain purchase records that demonstrate compliance with this requirement for one year after the date of purchase. (1) The location of the stored material and the storage practices used; (2) The transportation and use of the explosive material; (3) The nature of the explosive material, including its sensitivity; (4) Any other factor deemed relevant to the safety of miners potentially exposed to the hazards associated with the mixing of the bulk explosive material underground. If concentrations of radon daughters in excess of 0.1 WL are found in an exhaust air sample, thereafter. When compressed air is used, all necessary precautions shall be taken to protect persons from injury. 57.19101 Stopblocks and derail switches. The IME is located at 1120 19th Street NW., Suite 310, Washington, DC 200363605; 2024299280; https://www.ime.org. Notification of commencement of operations and closing of mines. Copies may be purchased from the Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 150960001; 7247764841; http://www.sae.org. MSHA will accept such a certifying statement annually, without regard to format, if it is made available at the time of inspection. (b) Defects on any equipment, machinery, and tools that affect safety shall be corrected in a timely manner to prevent the creation of a hazard to persons. The minimum temperature at which sufficient vapor is released by a liquid to form a flammable vapor-air mixture near the surface of the liquid. 704. (a) Diesel fuel used to power equipment in underground areas must not have a sulfur content greater than 0.05 percent. Potential asbestos fiber concentration shall be determined by phase contrast microscopy (PCM) using the OSHA Reference Method in OSHA's asbestos standard found in 29 CFR 1910.1001, Appendix A, or a method at least equivalent to that method in identifying a potential asbestos exposure exceeding the 0.1 f/cc full-shift limit or the 1 f/cc excursion limit. 1962Care, Use, and Maintenance of Fire Hose, Connections, and Nozzles. Subscribe to: Changes in Title 30 :: Chapter I :: Subchapter K :: Part 57. If used as an alternative, control doors shall be. 57.12026 Grounding transformer and switchgear enclosures. [51 FR 36198, Oct. 8, 1986, as amended at 69 FR 38842, June 29, 2004]. Parking or emergency (secondary) brakes are not to be actuated during the test. (a) On the surface, no more than one day's supply of combustible materials shall be stored within 100 feet of mine openings or within 100 feet of fan installations used for underground ventilation. NFPA No. 57.9160 Train movement during shift changes. Underground trailing cables shall be accepted or approved by MSHA as flame resistant. All man hoists shall be provided with devices to prevent overtravel. A manual master quick-close type air valve shall be installed on all pneumatic-powered equipment if there is a hazard of uncontrolled movement when the air supply is activated. The alarm shall be located so that it can be seen or heard by a person designated by the mine operator. Igniter cord. Blasting shall not be done when 1.0 percent or more methane is present. All buckets shall be stopped after being raised about three feet above the shaft bottom. Large rocks shall be broken before loading if they could endanger persons or affect the stability of mobile equipment. Power circuits shall be deenergized before work is done on such circuits unless hot-line tools are used. (a) Berms or guardrails shall be provided and maintained on the banks of roadways where a drop-off exists of sufficient grade or depth to cause a vehicle to overturn or endanger persons in equipment. 57.22235 Actions at 1.0 percent methane (I-C, II-A, II-B, and IV mines). 57.19006 Automatic hoist braking devices. 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. Primer. Trailing cables shall be attached to machines in a suitable manner to protect the cable from damage and to prevent strain on the electrical connections. Access to unattended mine openings shall be restricted by gates or doors, or the openings shall be fenced and posted. A safe means of passage around open shaft compartments shall be provided on landings with more than one entrance to the shaft. A systematic procedure of inspection, testing and maintenance of shaft and hoisting equipment shall be developed and followed. Otherwise, it is, within the purpose of this definition, uninsulated. Escapeway. [50 FR 4082, Jan. 29, 1985, as amended at 71 FR 16667, Apr. (2) Non-powered, negative-pressure, air purifying, particulate-filter respirators shall use an R- or P-series filter or any filter certified by NIOSH for DPM. Suitable means that which fits, and has the qualities or qualifications to meet a given purpose, occasion, condition, function, or circumstance. Tools or materials shall not be carried on top of locomotives underground except for secured rerailing devices located in a manner which does not create a hazard to persons. Crossovers shall be provided where it is necessary to cross conveyors. [56 FR 46517, Sept. 12, 1991; 56 FR 52193, Oct. 18, 1991]. (C) A second fan capable of accomplishing ventilation reversal shall be available for use in the event of failure of the main fan; (iii) Provide rapid air reversal that allows persons underground time to exit in fresh air by the second escapeway or find a place of refuge; and. Enhanced Content :: Cross Reference . 57.4230 Surface self-propelled equipment. Telephone: 3019756478 (not a toll free number); http://ts.nist.gov/nvl; or from the Government Printing Office, Information Dissemination (Superintendent of Documents), P.O. 1 year after date any equipment is tagged. (b) Unless steering and braking are under the control of the equipment operator on the towed equipment, a safety chain or wire rope capable of withstanding the loads to which it could be subjected shall be used in conjunction with any primary rigging. An explosive material containing substantial portions of water, oxidizers, and fuel, plus a cross-linking agent. Special protective equipment and special protective clothing shall be provided, maintained in a sanitary and reliable condition and used whenever hazards of process or environment, chemical hazards, radiological hazards, or mechanical irritants are encountered in a manner capable of causing injury or impairment. Combustible liquids shall be stored in a manner that ensures drainage will occur away from the explosive material storage facility in case of tank rupture. Face or bank means that part of any mine where excavating is progressing or was last done. Mill includes any ore mill, sampling works, concentrator, and any crushing, grinding, or screening plant used at, and in connection with, an excavation or mine. Supplies, materials, and tools on mantrips. (2) Automatically deenergize electrical equipment, except power to monitoring equipment determined by MSHA to be intrinsically safe under 30 CFR part 18, and prevent starting of such equipment when methane levels reach 1.5 percent; and. Certifications shall be retained for at least one year and made available to authorized representatives of the Secretary. When separate finishing bits are used, they shall be distinguishable from other bits. (b) Primers shall be prepared with the detonator contained securely and completely within the explosive or contained securely and appropriately for its design in the tunnel or cap well. 57.19069 Entering and leaving conveyances. General requirements for boilers and pressure vessels. Exception: "J" hooks are permitted to be used for setting wooden trusses. (i) The miner must continue to receive compensation at no less than the regular rate of pay in the classification held by that miner immediately prior to the transfer. (2) Brakemen and trainmen are prohibited from riding between cars of moving trains but may ride on the leading end of trains or other locations when necessary to perform their duties; (f) To and from work areas in overcrowded mobile equipment; (g) In mobile equipment with materials or equipment unless the items are secured or are small and can be carried safely by hand without creating a hazard to persons; or. (d) Under this section, a raised component of mobile equipment is considered to be blocked or mechanically secured if provided with a functional load-locking device or devices which prevent free and uncontrolled descent. (a) 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 308 micrograms of elemental carbon per cubic meter of air (308EC g/m3). The procedure for inspection, testing and maintenance required by standard 57.19120 shall be utilized at least every 30 days for hoists designated as emergency hoists in any evacuation plan. 57.19080 Hoisting tools, timbers, and other materials. Permanent blasting lines shall be properly supported. Such wall or partition shall be constructed of reinforced concrete or other noncombustible equivalent, and provided with pressure-relief devices. In underground areas where dangerous accumulations of water, gas, mud, or fire atmosphere could be encountered, persons shall be removed to safe places before blasting. (a) Flammable liquids shall not be stored underground, except, (1) Small quantities stored in tightly closed cabinets away from any heat source. (3) The make and model number of the equipment for which the ROPS is designed. (d) Mine power transformers and stationary equipment not approved by MSHA under the applicable requirements of 30 CFR parts 18 through 36 shall be installed in fresh air or downwind from an atmospheric methane monitor sensor. (d) Buckets equipped with positive locks to prevent accidental tripping or dumping. Permanent facilities are those intended to exist for one year or more; and. When an overtravel by-pass switch is installed, the switch shall function so as to allow the conveyance to be moved through the overtravel position when the switch is held in the closed position by the hoistman. (2) Fan installations for underground ventilation. Magazine means a facility for the storage of explosives, blasting agents, or detonators. (4) Whenever an operator ceases to do business, that operator must transfer all records required to be maintained by this part, or a copy thereof, to any successor operator who must maintain them for the required period. Readily visible signs prohibiting smoking and open flames shall be posted where a fire or explosion hazard exists. The doors shall be located so that they are not in direct line with explosive forces which could come out of the mine. Persons entering the facility shall wear a safety belt or harness equipped with a lifeline suitably fastened. Insulation and fittings for power wires and cables. 57.14160 Mantrip trolley wire hazards underground. Powerlines shall be well separated or insulated from waterlines, telephone lines and air lines. Haulage activity is permitted near the base of bench faces being loaded or awaiting firing, provided no other haulage access exists. 57.22202 Main fans (I-A, I-B, I-C, II-A, III, V-A, and V-B mines). (ii) If the equipment exceeds the maximum stopping distance in the initial test run, the mine operator may request from the inspector up to four additional test runs with two runs to be conducted in each direction. This standard does not apply to diesel-powered equipment. Blast area means the area in which concussion (shock wave), flying material, or gases from an explosion may cause injury to persons. When blasting on shift, tests for methane shall be made in the mine atmosphere by a competent person before blasting. Stopping distances are computed using a constant deceleration of 9.66 FPS2 and system response times of .5.1, 1.5, 2, 2.25 and 2.5 seconds for each of increasing weight category respectively. (a) If methane reaches 1.0 percent in the mine atmosphere, ventilation changes shall be made to reduce the methane. Protective equipment or clothing for welding, cutting, or working with molten metal. (b) If persons are assigned to work areas beyond the warning capabilities of the system, provisions shall be made to alert them in a manner to provide for their safe evacuation in the event of a fire. Only a decision by the Assistant Secretary shall be considered final Agency action for purposes of judicial review. (d) Remaining idle for one shift or longer. (c) When a misfire cannot be disposed of safely, each approach to the area affected by the misfire shall be posted with a warning sign at a conspicuous location to prohibit entry, and the condition shall be reported immediately to mine management. If the second fixture also turns, corrective action shall be taken. (a) Fan houses, fan bulkheads for main and booster fans, and air ducts connecting main fans to underground openings shall be constructed of noncombustible materials. (2) The escape route shall bypass the shop area so that the route will not be affected by a fire in the shop area. 57.19073 Hoisting during shift changes. The employer must provide each operator-in-training with sufficient training, through a combination of formal and practical instruction, to ensure that the operatorin- training develops the skills, knowledge, and ability to recognize and avert risk necessary to operate the equipment safely for assigned work. Evidence of competence to perform maintenance, 6. The ratio of vent size to internal size of the equipment or facility shall not be less than one square foot of vent for each 80 cubic feet of volume or space. Overburden means material of any nature, consolidated or unconsolidated, that overlies a deposit of useful materials or ores that are to be mined. Receptacles with covers shall be provided at suitable locations and used for the disposal of waste food and associated materials. Search & Navigation Persons under the influence of alcohol or narcotics shall not be permitted on the job. 57.11041 Landings for inclined ladderways. 57.22305 Approved equipment (III mines). The manufacturer's container may be used if secured to a nonconductive pallet. Each person shall be provided a minimum of 1.5 square feet of floor space. This does not prohibit pulling or dragging of cable by the equipment it powers when the cable is physically attached to the equipment by suitable mechanical devices, and the cable is insulated from the equipment in conformance with other standards in this part.
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