Program Policy Manual - VOLUME V - Mine Safety and Health ...

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MSHA PROGRAM POLICY MANUAL VOLUME V The environment in the storage location should be in accordance with manufacturers' recommendations. Storage plans should include provisions for segregating visitors' self-contained self-rescuers from those provided for employees at the mine. Each miner must be trained to know the specific location of the self-contained self-rescuer that is available for him/her. 6. Type of work performed by affected miners. Different plans may be approved for various categories of miners, dependent primarily upon the amount of travel required to perform their work. Storage plans for section workers should rarely allow for travel times greater than 5 minutes. Storage plans for rovers may allow for travel time up to 10 minutes. 7. Degree of risk to which affected miners are exposed. e amount of methane liberation and size and type of power systems, i.e., battery, electrical (a.c. or d.c.) or diesel, are some of the factors that should be considered when evaluating the degree of risk. Another factor should be the history of violations that could lead to the cause and effect of fires, explosions, and inundations. 8. Potential for breaking into oxygen-deficient atmospheres. When mining near abandoned areas, as described in Section 75.1701, or into areas having a high potential for outbursts, storage of self-contained self-rescuers shall not be permitted. 9. Type of risks to which affected miners are exposed. The types of risks that should be considered when evaluating storage plans are the risks associated with explosions, fires, and inundations. 10. Accident history of mine. The types of accidents which should be considered are those relating to explosions, fires, inundation of gases, and outbursts. 11. Other matters bearing upon the safety of miners. Storage plans should include a requirement for examination of self-contained self-rescuers during the period of the preshift examination or at the beginning of the shift. If the self-contained self-rescuers are stored in substantially constructed containers, or in another permanent manner, and located so that the units are protected from damage, inspection of the self-contained self-rescuers once each 24 hours should be sufficient to assure reliability of the units. Plans should include a provision that would permit any miner to wear or carry a self-contained self-rescuer. The February 2003 (Release V-33) 146
MSHA PROGRAM POLICY MANUAL VOLUME V tests required under the provisions of Section 75.1714-3(d) shall be made in accordance with the manufacturer's approved instructions. The minimum number of self-contained self-rescuers underground at each mine must be equal to or greater than the number of miners underground. The Bureau of Mines Report "Guidelines for Oxygen Self-Rescuer," Volumes I and II, is used by many operators as a basis for developing storage plans. Many recommendations made in the report are included above and the others may be helpful to the operator in preparing a storage plan and assist the inspector in approving plans. However, the guidance provided above for the 11 factors should be the primary source of guidance when giving permission for storage of selfcontained self-rescuers. Paragraph (e)(3) of this Section prohibits the operator from obtaining permission from the district manager to place the selfcontained self-rescuers more than 25 feet away from miners on mantrips into and out of the mine. For purposes of this Section only, miners are not considered to be on mantrips while walking into or out of the mine, or while being transported in shafts or slopes. Therefore, permission may be granted for storage of self-contained self-rescuers for miners in these situations. Violations of the approved storage plan for self-contained selfrescuers shall be cited under Section 75.1101-23. The provisions of paragraph (e) of this Section state that the miner operator may apply to the district manager under Section 75.1101-23 for permission to place the self-contained self-rescuer 25 feet away. This provision merely informs the operator of how to apply for a storage plan and shall not be used when citations are issued for violations of the storage plan. 75.1714-3 Self-Rescue Devices; Inspection, Testing, Maintenance, Repair and Recordkeeping Paragraph (b) of this Section requires that the self-rescue device be inspected for damage and for the integrity of its seal after each time it is worn or carried by a person. The term "inspected" consists of visually examining the self-rescuer. In order to make a valid visual examination of the Drager 810, the self-rescuer must be removed from the carrying pouch. The examiner shall make sure that the top and bottom of each container is not separated. In paragraph (c) of this Section, the phrase "...except devices using vacuum containers as the only method of sealing, shall be tested... by weighing ..." applies only to Drager 810 self-rescuers not provided with a stainless steel band to reinforce the seal. The February 2003 (Release V-33) 147
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