TM 1-1500-204-23-4 CHAPTER 4 INSTRUMENT SHOP 4-1.        General    Shop    Rules.        The     maintenance instructions and procedures contained in this chapter are general  in  nature  and  apply  to  instruments  installed  in Department of the Army aircraft.  Specific maintenance instructions  that  are  peculiar  to  particular  instruments are contained in applicable aircraft maintenance manuals  and  instrument  overhaul  manuals  and  will  be used,   when   specified,   in   conjunction   with   instructions contained in this chapter.  The practices and procedures described  in  this  chapter  pertain  to  the  manufacturing and    repair    functions    of    aviation    activities    and    are applicable to all levels of maintenance.  Because of the many   types   of   Army   aircraft,   each   shop   within   the manufacturing   and   repair   section   must,   of   necessity, have     personnel     trained     in     general     practices     and procedures  to  the  extent  that  different  type  and  model aircraft do not upset a smooth running shop. a.    Responsibility.    All  supervisory  personnel  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.  All shop personnel will strive to improve the safety program and be  especially  alert  to  observe  and  correct  hazardous conditions and unsafe shop practices.  All accidents, no matter    how    minor,    shall    be    reported    to    the    shop supervisor,    and    all    published    instructions    regarding safety    shall    be    strictly    adhered    to.        Also,    safety engineers   and   safety   officers   will   ensure   that   proper safety procedures are adhered to in accordance with AR 385-10, Army Safety Program; AR-385-30, Safety-Color Code Markings and Signs; The Occupational Safety and Health Act of 1971, OSHA 1910.251; all applicable fire codes,   NFPA   410;   and   other   accepted   civilian   and military safety practices. b.    Shop  Housekeeping.    Housekeeping   is   the yardstick by which the shops are judged.  A clean, well- arranged  shop  is  a  safe  shop  and  reflects  credit  on  all personnel  concerned  with  its  operation.    The  following shop practices shall be observed: (1)   Oil   pans   or   drip   pans   shall   be   used where   leaking   oil,   grease,   and   similar   materials   may cause hazardous accumulations on equipment or floors. All  spills  shall  be  cleaned  up  immediately.    Approved sweeping   compound   may   be   used   to   remove   these materials from the floor. CAUTION Floors  shall  not  be  cleaned  with volatile  or  flammable  liquids.    A flammable   film   may   remain   and cause a fire hazard. (2)  Floors  shall  be  maintained  smooth  and clean,  free  of  all  obstructions  and  slippery  substances. Holes   and   irregularities   in   floors   shall   be   repaired   to maintain a level surface free from tripping hazards. (3) All unnecessary materials on walls shall be removed and projections shall be kept to a minimum. (4)  Aisles  shall  be  clearly  defined  and  kept free  of  hazardous  obstructions.    Where  possible,  aisles shall be suitably marked by painting. (5) All machines, work benches, aisles, etc., shall be adequately illuminated. c.  Equipment Safety.  Unsafe equipment shall be reported  immediately.    The  following  equipment  safety practices shall be observed: (1)   Machines   shall   be   located   to   provide operators  with  sufficient  space  to  handle  materials  and perform job operations without interference. (2)  Bolt  down  all  machinery  that  can  move or walk due to vibration (drill press, bench grinder, etc.). (3)   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. (4)  Shop  machinery  shall  be  operated  only by qualified personnel observing safe practices. (5)     Safety     devices,     such     as     guards, interlocks,  automatic  releases,  and  stops,  shall  always be kept in operating condition. 4-1