TM 1-1500-204-23-9 · Keep  dirty  rags  and  paper  refuse  in separate  metal  containers  with  self- closing lids and appropriate markings. Remove  and  dispose  of  contents  at end of each operating shift. · Keep all authorized supplies of paint, thinners,  etc.,  in  paint  room  in  metal cabinets   with   vent   holes   to   prevent accumulation of vapors. Keep thinners,   solvents,   and   other   highly volatile flammable agents in approved safety cans. · Keep   all   paint   spraying   equipment clean,     and     inspect     frequently     to ensure   that   serviceable   condition   is maintained. · Frequent     inspections     of     electrical equipment shall be made by qualified electricians to ensure proper operation and to eliminate fire hazards   caused   by   short         circuits, defective            electric    switches,    or improper maintenance. · Personnel engaged in acid or caustic cleaning operations shall wear rubber gloves,  aprons,  boots,  goggles,  and approved protective equipment. · No   acid   or   other   oxidizing   agents shall  be  permitted  in  paint  room  or stored     where     they     might     contact painting supplies. · Certain  paint  solvents  and  pigments may  cause  dermatitis  on  coming  in contact with the skin.  Some solvents may     penetrate     skin,     or     may     be inhaled     as     vapors,     and     lead     to systemic   poisoning.   Care   must   be taken to avoid skin contact or breathing   vapors   to   avoid   systemic poisoning. b.      Fire   Precautions.      Most   paints   contain   highly flammable constituents, which, under suitable conditions,  can  form  explosive  mixtures  with  air.    As  a result, the following precautions shall be taken: · Electric motors used to drive exhaust fans   or   other   equipment   in   storage places  shall  be  of  the  type  approved for  explosive  atmospheres.    If  such motors  are  not  available,  substitutes shall  be  located  outside  the  room  or building.  Motor housings, fan frames, and the like shall be properly, grounded   to   prevent   possible   static sparks, and all electric wiring shall be enclosed in conduits. · All   electric   light   bulbs   used   within storage   area   shall   be   enclosed   in vapor-proof globes, mounted in keyless sockets. · Motor  starting  devices  and  switches in  all  electrical  circuits,  if  not  of  the explosive-proof type and approved by an   established   underwriter,   shall   be located   outside   room   or   building   to prevent  fire  hazards  from  flammable vapors. · Tools  used  to  open  containers  shall be   nonspark   producing   types.      All electrically-driven portable tools used in  this  area  shall  be  explosion  proof and properly grounded. · Ample  fire  extinguishers  of  the  form, dry  chemical,  or  carbon  dioxide  type will be provided. 9-3.      Painting   Requirements.      Ground         support equipment is painted primarily for protection against rust and corrosion.  Other considerations include camouflage or organization identification. a.       General.        The    safety    precautions    and    shop practices  given  in  Chapter  2  will  be  adhered  to  during the repainting of ground support equipment.  Procedures for   preparation   and   application   of   paint   on   various surfaces are covered in a general nature in paragraphs 9-3  through  9-5.    All  ground  support  equipment  when painted or repainted will be top coated with MIL-C-46168 coating, Aliphatic Polyurethane, Chemical Agent Resistant.  Conditions which warrant painting of ground support equipment are as follows: 9-3