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

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MSHA PROGRAM POLICY MANUAL VOLUME V Subpart D Thermal Dryers 77.301 Dryer Heating Units; Operation Additional standards which should be consulted with regard to paragraph (b) of this Section are: The National Fire Protection Association Standards Number 60 "Standards for the Installation and Operation of Pulverized Fuel Systems"; and 653 "Prevention of Dust Explosions in Coal Preparation Plants." Both can be found in the NFPA National Fire Codes, Volume 3-- Combustible Solids, Dusts, and Explosives, 1971-72. 77.303 Hot Gas Inlet Chamber Dropout Doors The phrase, "At the bottom," as used in this Section, is interpreted to mean in the bottom area, not necessarily underneath. 77.313 Wet-Coal Feedbins; Low-level Indicators "Wet coal bins," as referred to in this Section, mean large surge bins where audible and visible low level indicators are necessary. 77.314 Automatic Temperature Control Instruments The instrument referred to in paragraph (b) of this Section need not be locked. However, the mechanism that controls the temperature setting shall be locked or sealed to prevent tampering or unauthorized adjustment. February 2003 (Release V-33) 169
MSHA PROGRAM POLICY MANUAL VOLUME V Subpart E Safeguards for Mechanical Equipment 77.400 Mechanical Equipment Guards The word "line," used in paragraph (b) of this Section, means beltline and should read "... if whipping action from a broken beltline would be hazardous to persons below." The guard required in paragraph (c) should extend a minimum distance of 30 inches from the point where persons could become caught between the belt and the pulley. 77.401 Stationary Grinding Machines; Protective Devices Only wheels or discs with manufacturer's identification tags still attached, showing the proper r.p.m. rating of the wheel, shall be used. A grinding wheel or disc rated for 5,000 r.p.m. should not be used with a machine rated for 7,000 r.p.m. 77.403 Mobile Equipment; Falling Object Protective Structures (FOPS) In enforcing paragraphs (a) and (b) of this Section, the inspector must make an independent judgment that a FOPS is necessary in order to protect the operator of the equipment. If an inspector observes equipment being operated and, in his/her opinion, a FOPS is necessary, the inspector shall issue a citation or order. When mobile equipment other than what is listed in this Section, such as an excavator with a rotating deck, is used where there exists a hazard from falling objects, steps shall be taken to protect the operator. If, upon inspection, any machine is found operating in close proximity to a highwall and there is a danger from falling material, an order of withdrawal under the provisions of Section 107(a) of the Act would be appropriate to protect the machine operator. 77.403a Mobile Equipment; Rollover Protective Structures (ROPS) Section 77.403a and 77.403b are written without parentheses. A citation may be written as 77.403a(c)(1). There are other possible combinations, but ensure that the correct transposition is made. If an inspector, upon an inspection of a mine, finds that an imminent danger does exist which involves equipment manufactured prior to July 1, 1969, and relates to the lack of ROPS for such equipment, he/she shall issue an order under Section 107(a) of the Act. Such orders should describe the conditions (equipment, grades, etc.) and/or practices which constitute the imminent danger. Any such order issued should require the equipment (or similar equipment) to be withdrawn prohibited from operation under the conditions that created the imminent danger. February 2003 (Release V-33) 170
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