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<br />Paragraph (f)(5) allows the district manager to require minimum ventilating air quantities at other ' <br />locations where individual units ofdiesel-powered equipment are being operated. Any such ' <br />locations should be specified in the ventilation plan. The preamble to the final rule provides some <br />examples of such locations, including underground repair shops, permanent fuel storage facilities, <br />temporary fuel storage areas, or conshuction sites. , <br />Multiple Units ofDiesel-powered Equipment <br />When multiple units ofdiesel-powered equipment are on the working section, the minimum ' <br />ventilating air quantity shall represent the sum of the nameplate ventilating air quantities of all of <br />the diesel-powered equipment located on the working section, i.e., equipment located inby the <br />loadmg point, excluding any equipment specifically exempted in the plan. The locations where the ' <br />minimum air quantity must be maintained are stipulated in paragraph (g)(1) through (g)(3). <br />When multiple units ofdiesel-powered equipment are being operated in areas where mechanized , <br />mining equipment is being installed or removed, the minimum ventilating air quantity approved in <br />the ventilation plan should represent the sum of the nameplate ventilating air quantities of all of <br />the diesel-powered equipment located inby the mouth of the panel, excluding any equipment , <br />specifically exempted in the plan. This equipment should include all diesel-powered equipment <br />used in the setup or removal process, such as shield haulers, scoops, pickups, etc. The location of , <br />the minimum air quantity would be specified in the intake entry or entries just outby the crosscut <br />conducting the air into the face. Also, a monitoring point(s) may be set up under §70.1900(a)(4) <br />to ensure that diesel-powered equipment is being adequately ventilated in the intake haulage , <br />entry. <br />Paragraph (d) should be used to address diesel-powered equipment that is actually on the removal , <br />or setup face, i.e., those pieces of equipment inby the last loading point or future loading point. <br />The initial air quantity (before any exclusions) would be the sum of the nameplate ventilating air <br />quantities on those pieces of equipment. The location where the minimum quantity must be ' <br />maintained would be either in the crosscut conducting the air onto the face or at another <br />appropriate inby location. <br />The diagram below provides examples of locations where minimum ventilating air quantities , <br />should be maintained for multiple units ofdiesel-powered equipment, and also indicates an <br />example of a location for an air quality monitoring point required under §70.1900(a)(4). This ' <br />would be in addition to the monitoring point required by §70.1900(a)(3). <br /> <br /> <br />L <br />September 1997 (Release 2) ' <br /> <br />