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

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MSHA PROGRAM POLICY MANUAL VOLUME V signs at or near the surface structures where smoking is prohibited. 75.1703 Portable Electric Lamps Electric cap lamps used for portable illumination underground shall be maintained in permissible condition. Lamps that have been altered, such as by exposing a contact point in the headpiece for use as a shot-firing unit, shall be considered to be nonpermissible. 75.1708 Surface Structures, Fireproofing Where existing structures are fireproof and were erected on or before March 30, 1970, the erection of fire doors is not necessary. Fire doors shall be substantially constructed and located in the mine as near as practicable to the surface to prevent the products of combustion from entering and endangering persons underground. 75.1709 Accumulations of Methane and Coal Dust on Surface Coal-Handling Facilities At least once during each working shift, or more often if necessary, in surface coal-handling and coal-storage facilities, a qualified person designated by the operator shall make examinations for methane wherever the possibility of accumulations exists. A record of such examinations shall be kept. The examinations for methane shall be made with a methane detector approved by the Secretary. When an accumulation of 1.0 percent or more of methane is detected in such surface facilities, means shall be provided to prevent methane from accumulating in such quantity. Tests for methane in surface structures shall be made prior to any repair work in which welding is done or an open flame is used. The operator shall initiate an effective and systematic program of preventing coal dust from accumulating on coal-handling facilities. The presence of excessive concentrations of coal dust, whether in or on such facilities, constitutes a violation of this provision. Also, where excessive airborne dust could present an explosion hazard, water sprays or other effective means shall be used to allay such dust. 75.1710-1 Canopies or Cabs; Self-Propelled Electric Face Equipment; Installation Requirements This Section requires that all self-propelled electric face equipment in all coal mines where the bottom to top (mine floor to mine roof) measurements are 42 inches or greater be equipped with cabs or canopies. The following guidelines are to be used July 2010 (Release V-42) 135
MSHA PROGRAM POLICY MANUAL VOLUME V relative to the enforcement of this Section: 1. To determine if cabs or canopies are required, the following guidelines are applicable. a. Measurements are to be taken on a section-bysection basis at any given mine. b. Measurements are to be taken at the minimum height (bottom to top) in the working section provided this minimum height is not a result of poor mining practices. Should this be the case, such measurement is to be disregarded and the minimum height determined from measurements at locations where accepted practices were followed. c. For electric face equipment which is regularly required to travel to other areas of the mine, the minimum height (bottom to top) is to be determined within the area of regular travel. d. Where the minimum height frequently fluctuates below and above 42 inches, a citation for a violation of this Section is not to be issued when such fluctuations below 42 inches would routinely create the necessity to remove cabs or canopies. An evaluation of the minimum height is to be made periodically to determine if such fluctuations still exist. These evaluations should normally be made as a part of a mandated regular mine inspection. e. Self-propelled electric face equipment which has machine-mounted operating controls must be provided with a cab or a canopy, as required by this Section, even if the equipment is normally operated by remote controls. Self-propelled electric face equipment without machine-mounted controls is not required to have a cab or canopy as long as the operator using the remote controls is located away from the machine being operated. If, at any time, the remote controls are used for tramming or for any other reason, while placed on the equipment, the equipment operator must be protected by a cab or canopy. The cab or canopy must be positioned over the controls on the equipment so that the equipment operator is protected when using machinemounted controls or when operating the equipment using remote controls placed on the equipment. February 2003 (Release V-33) 136
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