TM 1-1500-204-23-1 NOTE Before  opening  an  aircraft  fuel  port or doing anything else that would let fuel vapors escape into the air, bond yourself  to  the  container  by  taking hold of it.  If it is an aircraft or piece of  metal  equipment,  take  hold  of  a bare metal part with both hands for a few  seconds.  Although  this  bonding will    not    completely    discharge    the static  electricity,  it  will  equalize  the charge  with  the  charge  on  the  piece of equipment. ·  Do not refuel an aircraft until its engines are shut down, except as provided in hot refueling. ·  Do not allow any work to be done on an aircraft's batteries while the aircraft is being refueled. NOTE The batteries should not be raised or lowered, and battery chargers should not be connected, used, or disconnected during refueling. ·  Stop refueling operations when there are lightning discharges in the immediate area. ·  Do not fuel an aircraft or store aviation fuel within 100  feet  of  the  antenna  of  an  airfield  surface- detection radar. ·  Do not fuel an aircraft or store aviation fuel within 300  feet  of  the  antenna  of  an  airfield  approach and traffic control radar. ·  Airborne   surveillance   units   must   be   shut   down before the aircraft approaches within 300 feet of a refueling or fuel storage area. ·  A   weather-mapping   radar   unit   mounted   in   an aircraft   must   be   shut   down   before   and   during refueling of the aircraft. ·  Radio     transmission     from     the     aircraft     being refueled  is  not  allowed  because  of  the  danger  of arcing. NOTE Restrict vehicle access to the refueling     area,     allow     only     those vehicles actually involved in servicing  aircraft  to  come  within  50 feet of the refueling operation. Vehicles used in and around refueling  areas  must  be  maintained to a high standard of performance to prevent  the  fire  hazards  of  backfires and sparks.  The electrical circuits of vehicles used in refueling operations must be maintained in top condition to    prevent    short    circuits    around defects. (4) Fuel    contamination.        Care    shall    be taken    when    refueling    to    prevent    fuel    contamination. Sediment, water, microbiological growth, and mixed fuels can   cause   fuel   contamination   and   danger   for   aircraft operations. (5) Protective clothing.  To date, no regular Army uniform (suitable for everyday field wear) has been developed    for    personnel    who    handle    aviation    fuels. Therefore,    wear    the    standard    combat    uniform.        Air crewmembers     should     wear     the     nylon     fire-retardant uniform   but   should   know   that   it   loses   its   protective properties   if   it   is   saturated   with   a   petroleum   product. Because    combat    uniforms    and    flight    suits    are    not impervious   to   petroleum,   use   great   care   in   refueling operations to avoid spilling fuel on your clothing. 3-6. Oil      Servicing.      Oil      servicing      precautionary measures are required due to the flammable nature of oil. General precautions for oil servicing are the same as for fuel    servicing.        Additional    safety    precautions    for    oil servicing   and   draining   are   contained   in   the   following procedures: WARNING To avoid contamination in oil supply for    gas    turbine    and    reciprocating engines,     do     not     use     previously opened  cans  of  engine  oil.    A  new sealed can of oil must be opened and used.    When  opening  can,  clean  top and   use   a   clean,   sharp,   unplated instrument to prevent contamination. a. Install drip pans where practicable. 3-14