TM 1-1500-204-23-1 Allow first coat to dry thoroughly before applying second coat. NOTE Machines     shall     not     be     operated during painting operation. d. Equipment  Maintenance  Form.    The  equipment maintenance     form     is     explained     in     the     following paragraph. DD  Form  314.      This  form,  properly  initiated, shall   be   attached   to   each   piece   of   equipment.      The preventive maintenance requirements shall be accomplished   and   noted   by   operator   by   placing   his initials in the appropriate block. 2-5. Hangar    and    Shop    Safety.        All    supervisory personnel  in  Army  hangars  and  shops  are  responsible for a continuing and effective shop safety program.  To implement and maintain this program, shop supervisors will utilize bulletin boards, signs, and any other effective method.      Shop   personnel   will   cooperate   in   the   shop safety   program   by   making   helpful   recommendations, and   continually   exercising   care   and   caution   in   the operation    of    all    shop    equipment.        The    following paragraphs  describe  electrical,  machine  tool,  and  fire safety precautions. a. Electrical   Safety.      The      following      electrical safety  precautions  shall  be  observed  in  Army  hangars and shops. Ensure   that   all   unauthorized   personnel   are clear    of    area    before    opening    valves    or energizing electrical circuits for starting machinery. Electrical  tools  must  be  connected  to  a  low resistance ground. Electrical   cables   and   air   hoses   to   portable units will be laid out so there is no danger of tripping. Whenever  possible,  aircraft  batteries  will  be disconnected  when  undergoing  maintenance performed in the hangar. Substantial low resistance conductors shall be used   to   ground   all   stationary   and   portable machines,   equipment,   or   other   devices   in which   static   charges   may   be   generated,   or which require electrical circuits of a hazardous nature. All switches and electrical equipment shall be of the enclosed explosion-proof type. All   metal   apparatus   shall   be   grounded   to avoid the danger of igniting test fluid fumes or creating electrical shock. b. Machine   Tool   Safety.      Machine   Tool   safety precautions are explained in the following paragraphs. (1) Face   shields   and   safety   glasses.      Personnel operating    machinery    shall    wear    eye    protection    as prescribed.    A  protective  face  shield  or  safety  glasses shall  be  worn  when  operating  a  grinder  regardless  of whether grinder is equipped with attached shields. (2) Drilling,  grinding,  or  sawing  precautions.    The following   safety   precautions   shall   be   observed   when drilling, grinding, or sawing. Clamp   work   securely   so   that   work   will   not move. Stop   machine   prior   to   attempting   to   adjust work that has become lammed. Cutting tools must be kept sharp. Allow   chuck   to   come   to   a   stop   on   its   own accord.    Do  not  use  hand  pressure  to  stop  a spinning chuck. Do not set tools while power is on.  Examine tools  and  chucks  for  cracks  and  defects  prior to use. Stand to one side of grinding wheel when it is first   started   to   avoid   injury   in   case   wheel fractures. Wear  suitable  gloves  in  addition  to  goggles when buffing. c. Fire Safety.  Unsafe equipment and fire hazards are   the   main   factors   to   be   observed   while   planning safety   procedures   for   hangars   and   shops.      Unsafe equipment  shall  be  reported  immediately.    A  constant vigilance  must  be  maintained  to  seek  out  fire  hazards. Fire  hazards  are  constantly  present  in  the  shop  where sparks, friction, or careless handling can cause 2-6