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| Safety Devices and Maintenance Requirements | 56.14100 – 56.14132 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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50 FR 4054, Jan. 29, 1985, unless otherwise noted.
53 FR 32521, Aug. 25, 1988, unless otherwise noted.
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(a) Self-propelled mobile equipment to be used during a shift shall be inspected by the equipment operator before being placed in operation on that shift.
(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.
(c) When defects make continued operation hazardous to persons, the defective items including self-propelled mobile equipment shall be taken out of service and placed in a designated area posted for that purpose, or a tag or other effective method of marking the defective items shall be used to prohibit further use until the defects are corrected.
(d) Defects on self-propelled mobile equipment affecting safety, which are not corrected immediately, shall be reported to and recorded by the mine operator. The records shall be kept at the mine or nearest mine office from the date the defects are recorded, until the defects are corrected. Such records shall be made available for inspection by an authorized representative of the Secretary.
(a) Minimum requirements.
(1) Self-propelled mobile equipment shall be equipped with a service brake system capable of stopping and holding the equipment with its typical load on the maximum grade it travels. This standard does not apply to equipment which is not originally equipped with brakes unless the manner in which the equipment is being operated requires the use of brakes for safe operation. This standard does not apply to rail equipment.
(2) If equipped on self-propelled mobile equipment, parking brakes shall be capable of holding the equipment with its typical load on the maximum grade it travels.
(3) All braking systems installed on the equipment shall be maintained in functional condition.
(b) Testing.
(1) Service brake tests shall be conducted when an MSHA inspector has reasonable cause to believe that the service brake system does not function as required, unless the mine operator removes the equipment from service for the appropriate repair;
(2) The performance of the service brakes shall be evaluated according to Table M-1.
| Gross vehicle weight lbs. | Equipment speed, MPH | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | |
| Service Brake Maximum Stopping Distance—Feet | |||||||||||
| 0-36000 | 34 | 38 | 43 | 48 | 53 | 59 | 64 | 70 | 76 | 83 | 89 |
| 36000-70000 | 41 | 46 | 52 | 58 | 62 | 70 | 76 | 83 | 90 | 97 | 104 |
| 70000-140000 | 48 | 54 | 61 | 67 | 74 | 81 | 88 | 95 | 103 | 111 | 119 |
| 140000-250000 | 56 | 62 | 69 | 77 | 84 | 92 | 100 | 108 | 116 | 125 | 133 |
| 250000-400000 | 59 | 66 | 74 | 81 | 89 | 97 | 105 | 114 | 123 | 132 | 141 |
| Over 400000 | 63 | 71 | 78 | 86 | 94 | 103 | 111 | 120 | 129 | 139 | 148 |
| Stopping distances are computed using a constant decleration of 9.66 FPS2 and system response times of .5.1, 1.5, 2, 2.25 and 2.5 seconds for each increasing weight category respectively. Stopping distance values include a one-second operator response time. | |||||||||||
| Miles per hour | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Seconds Required to Travel 100 Feet | 6.8 | 6.2 | 5.7 | 5.2 | 4.9 | 4.5 | 4.3 | 4.0 | 3.8 | 3.6 | 3.4 |
(3) Service brake tests shall be conducted under the direction of the mine operator in cooperation with an according to the instructions provided by the MSHA inspector as follows:
(i) Equipment capable of traveling at least 10 miles per hour shall be tested with a typical load for that particular piece of equipment. Front-end loaders shall be tested with the loader bucket empty. Equipment shall not be tested when carrying hazardous loads, such as explosives.
(ii) The approach shall be sufficient length to allow the equipment operator to reach and maintain a constant speed between 10 and 20 miles per hour prior to entering the 100 foot measured area. The constant speed shall be maintained up to the point when the equipment operator receives the signal to apply the brakes. The roadway shall be wide enough to accommodate the size of the equipment being tested. The ground shall be generally level, packed, and dry in the braking portion of the test course. Ground moisture may be present to the extent that it does not adversely affect the braking surface.
(iii) Braking is to be performed using only those braking systems, including auxiliary retarders, which are designed to bring the equipment to a stop under normal operating conditions. Parking or emergency (secondary) brakes are not to be actuated during the test.
(iv) The tests shall be conducted with the transmission in the gear appropriate for the speed the equipment is traveling except for equipment which is designed for the power train to be disengaged during braking.
(v) Testing speeds shall be a minimum of 10 miles per hour and a maximum of 20 miles per hour.
(vi) Stopping distances shall be measured from the point at which the equipment operator receives the signal to apply the service brakes to the final stopped position.
(4) Test results shall be evaluated as follows:
(i) If the initial test run is valid and the stopping distance does not exceed the corresponding stopping distance listed in Table 1, the performance of the service brakes shall be considered acceptable. For tests to be considered valid, the equipment shall not slide sideways or exhibit other lateral motion during the braking portion of the test.
(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. The performance of the service brakes shall be considered acceptable if the equipment does not exceed the maximum stopping distance on at least three of the additional tests.
(5) Where there is not an appropriate test site at the mine or the equipment is not capable or traveling at least 10 miles per hour, service brake tests will not be conducted. In such cases, the inspector will rely upon other available evidence to determine whether the service brake system meets the performance requirement of this standard.
[53 FR 32521, Aug. 25, 1988; 53 FR 44588, Nov. 4, 1988]
Braking systems on railroad cars and locomotives shall be maintained in functional condition.
(a) If windows are provided on operators' stations of self-propelled mobile equipment, the windows shall be made of safety glass or material with equivalent safety characteristics. The windows shall be maintained to provide visibility for safe operation.
(b) If damaged windows obscure visibility necessary for safe operation, or create a hazard to the equipment operator, the windows shall be replaced or removed. Damaged windows shall be replaced if absence of a window would expose the equipment operator to hazardous environmental conditions which would affect the ability of the equipment operator to safely operate the equipment.
(c) The operator's stations of self-propelled mobile equipment shall—
(1) Be free of materials that could create a hazard to persons by impairing the safe operation of the equipment; and
(2) Not be modified, in a manner that obscures visibility necessary for safe operation.
(a) Before a tire is removed from a vehicle for tire repair, the valve core shall be partially removed to allow for gradual deflation and then removed. During deflation, to the extent possible, persons shall stand outside of the potential trajectory of the lock ring of a multi-piece wheel rim.
(b) To prevent injury from wheel rims during tire inflation, one of the following shall be used:
(1) A wheel cage or other restraining device that will constrain all wheel rim components during an explosive separation of a multi-piece wheel rim, or during the sudden release of contained air in a single piece rim wheel; or
(2) A stand-off inflation device which permits persons to stand outside of the potential trajectory of wheel components.
Repairs or maintenance of machinery or equipment shall be performed only after the power is off, and the machinery or equipment blocked against hazardous motion. Machinery or equipment motion or activation is permitted to the extent that adjustments or testing cannot be performed without motion or activation, provided that persons are effectively protected from hazardous motion.
(a) Fork-lift trucks, front-end loaders, and bulldozers shall be provided with falling object protective structures if used in an area where falling objects could create a hazard to the equipment operator.
(b) The protective structure shall be capable of withstanding the falling object loads to which it would be subjected.
(a) Moving machine parts shall be guarded to protect persons from contacting gears, sprockets, chains, drive, head, tail, and takeup pulleys, flywheels, couplings, shafts, fan blades, and similar moving parts that can cause injury.
(b) Guards shall not be required where the exposed moving parts are at least seven feet away from walking or working surfaces.
Overhead drive belts shall be guarded to contain the whipping action of a broken belt if that action could be hazardous to persons.
Unguarded conveyors next to the travelways shall be equipped with—
(a) Emergency stop devices which are located so that a person falling on or against the conveyor can readily deactivate the conveyor drive motor; or
(b) Railings which—
(1) Are positioned to prevent persons from falling on or against the conveyor;
(2) Will be able to withstand the vibration, shock, and wear to which they will be subjected during normal operation; and
(3) Are constructed and maintained so that they will not create a hazard.
In areas where flying or falling materials generated from the operation of screens, crushers, or conveyors present a hazard, guards, shields, or other devices that provide protection against such flying or falling materials shall be provided to protect persons.
(a) When persons are exposed to slushing operations, the slushers shall be equipped with rollers and drum covers and anchored securely before slushing operations are started.
(b) Slushers rated over 10 horsepower shall be equipped with backlash guards, unless the equipment operator is otherwise protected.
(c) This standard does not apply to air tuggers of 10 horsepower or less that have only one cable and one drum.
(a) Guards shall be constructed and maintained to—
(1) Withstand the vibration, shock, and wear to which they will be subjected during normal operation; and
(2) Not create a hazard by their use.
(b) Guards shall be securely in place while machinery is being operated, except when testing or making adjustments which cannot be performed without removal of the guard.
Backstops or brakes shall be installed on drive units of inclined conveyors to prevent the conveyors from running in reverse, creating a hazard to persons.
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 valve shall be closed except when the equipment is being operated.
Stationary grinding machines, other than special bit grinders, shall be equipped with—
(a) Peripheral hoods capable of withstanding the force of a bursting wheel and enclosing not less than 270° of the periphery of the wheel;
(b) Adjustable tool rests set so that the distance between the grinding surface of the wheel and the tool rest in not greater than 1⁄8 inch; and
(c) A safety washer on each side of the wheel.
[53 FR 32521, Aug. 25, 1988; 53 FR 44588, Nov. 4, 1988]
(a) Power drills, disc sanders, grinders and circular and chain saws, when used in the hand-held mode shall be operated with controls which require constant hand or finger pressure.
(b) Circular saws and chain saws shall not be equipped with devices which lock-on the operating controls.
(a) Equipment included. Roll-over protective structures (ROPS) and seat belts shall be installed on—
(1) Crawler tractors and crawler loaders;
(2) Graders;
(3) Wheel loaders and wheel tractors;
(4) The tractor portion of semi-mounted scrapers, dumpers, water wagons, bottom-dump wagons, rear-dump wagons, and towed fifth wheel attachments;
(5) Skid-steer loaders; and
(6) Agricultural tractors.
(b) ROPS construction. ROPS shall meet the requirements of the following Society of Automotive Engineers (SAE) publications, as applicable, which are incorporated by reference:
(1) SAE J1040, “Performance Criteria for Roll-Over Protective Structures (ROPS) for Construction, Earthmoving, Forestry, and Mining Machines,”, 1986; or
(2) SAE J1194, “Roll-Over Protective Structures (ROPS) for Wheeled Agricultural Tractors”, 1983.
(c) ROPS labelling. ROPS shall have a label permanently affixed to the structure identifying—
(1) The manufacturer's name and address;
(2) The ROPS model number; and
(3) The make and model number of the equipment for which the ROPS is designed.
(d) ROPS installation. ROPS shall be installed on the equipment in accordance with the recommendations of the ROPS manufacturer.
(e) ROPS maintenance.
(1) ROPS shall be maintained in a condition that meets the performance requirements applicable to the equipment. If the ROPS is subjected to roll-over an abnormal structural loading, the equipment manufacturer or a registered professional engineer with knowledge and experience in ROPS design shall recertify that the ROPS meets the applicable performance requirements before it is returned to service.
(2) Alterations or repairs on ROPS shall be performed only with approval from the ROPS manufacturer or under the instructions of a registered professional engineer with knowledge and experience in ROPS design. The manufacturer or engineer shall certify that the ROPS meets the applicable performance requirements.
(f) Exemptions.
(1) This standard does not apply to—
(i) Self-propelled mobile equipment manufactured prior to July 1, 1969;
(ii) Over-the-road type tractors that pull trailers or vans on highways;
(iii) Equipment that is only operated by remote control; and
(2) Self-propelled mobile equipment manufactured prior to October 24, 1988, that is equipped with ROPS and seat belts that meet the installation and performance requirements of 30 CFR 56.9088 (1986 edition) shall be considered in compliance with paragraphs (b) and (h) of this section.
(g) Wearing seat belts. Seat belts shall be worn by the equipment operator except that when operating graders from a standing position, the grader operator shall wear safety lines and a harness in place of a seat belt.
(h) Seat belts construction. Seat belts required under this section shall meet the requirement of SAE J386, “Operator Restraint System for Off-Road Work Machines” (1985, 1993, or 1997), or SAE J1194, “Roll-Over Protective Structures (ROPS) for Wheeled Agricultural Tractors” (1983, 1989, 1994, or 1999), as applicable, which are incorporated by reference.
(i) Seat belt maintenance. Seat belts shall be maintained in functional condition, and replaced when necessary to assure proper performance.
(j) Publications. The incorporation by reference of these publications is approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies of these publications may be examined at any Metal and Nonmetal Mine Safety and Health District Office; at MSHA's Office of Standards, Regulations, and Variances, 200 Constitution Avenue NW, Washington, DC 20210; 202-693-9440; or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. Copies may be purchased from the Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096-0001; 724-776-4841; http://www.sae.org.
[53 FR 32521, Aug. 25, 1988; 53 FR 44588, Nov. 4, 1988, as amended at 60 FR 33723, June 29, 1995; 67 FR 38385, June 4, 2002; 68 FR 19347, Apr. 21, 2003; 80 FR 52987, Sept. 2, 2015; 91 FR 9448, Feb. 26, 2026]
(a) Seat belts shall be provided and worn in haulage trucks.
(b) Seat belts shall be maintained in functional condition, and replaced when necessary to assure proper performance.
(c) Seat belts required under this section shall meet the requirements of SAE J386, “Operator Restraint System for Off-Road Work Machines” (1985, 1993, or 1997), which are incorporated by reference.
(d) The incorporation by reference of these publications is approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies of these publications may be examined at any Metal and Nonmetal Mine Safety and Health District Office; at MSHA's Office of Standards, Regulations, and Variances, 200 Constitution Avenue NW, Washington, DC 20210; 202-693-9440; or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. Copies may be purchased from the Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096-0001; 724-776-4841; http://www.sae.org.
[50 FR 4054, Jan. 29, 1985, as amended at 67 FR 38385, June 4, 2002; 68 FR 19347, Apr. 21, 2003; 80 FR 52987, Sept. 2, 2015; 91 FR 9448, Feb. 26, 2026]
(a) Manually-operated horns or other audible warning devices provided on self-propelled mobile equipment as a safety feature shall be maintained in functional condition.
(b)
(1) When the operator has an obstructed view to the rear, self-propelled mobile equipment shall have—
(i) An automatic reverse-activated signal alarm;
(ii) A wheel-mounted bell alarm which sounds at least once for each three feet of reverse movement;
(iii) A discriminating backup alarm that covers the area of obstructed view; or
(iv) An observer to signal when it is safe to back up.
(2) Alarms shall be audible above the surrounding noise level.
(3) An automatic reverse-activated strobe light may be used at night in lieu of an audible reverse alarm.
(c) This standard does not apply to rail equipment.