TM 55-1560-307-13&P (7) Attach   a   tag   to   the   fuel   filler   cap   with information   stating   that   the   tank   has   been   preserved with   oil   (item   12,   Appx   D),   and   that   no   flushing   is required when depreserving tank. NOTE In order to allow tank to breathe when stored, do not secure vent fitting caps tightly. (8) Apply corrosion preventive compound (item 4,  Appx  D)  to  metal  fittings  and  exposed  bare  metal areas. (9) Remove  tank  from  aircraft  and  store  in  an approved tank storage site. (10)    Install vent dust cap and tank opening cap. (11)    Ensure fuel filler port caps are installed and secured. (12)    Ensure     fuel     quantity     sticks     are     down, locked, and secured.  This prevents water from entering storage tube. 3-26. STORAGE. a.   The   ERFS   tanks   and    components    should    be stored   outside   in   a   secure   location.      The   tank   and storage   con-   tainer   should   be   grounded   due   to   con- taining  fuel/vapors  in  a  residual  form.  In  addition,  the following procedures shall be followed: (1) The   600   gallon   fuel   tank   and   all   of   its components stored inside the storage container shall be preserved in accordance with paragraph 3-25 above. (2) The  600  gallon  tank  and  storage  container shall be inspected for bare metal and treated accordingly to prevent corrosion. (3) Outside storage is complete when tank and storage container is preserved. b.   For   administrative   storage   instructions,   refer   to AR  750-1,  Army  Material  Maintenance  Concepts  and Policy, and TM 740-90-1, Maintenance of Supplies and Equipment. 3-27. SHIPPING.    The  ERFS  600  gallon  fuel  tanks and   its   components   can   be   shipped   after   complete purging    of    the    fuel    tanks.        Shipping    and    storage container  (P/N  9329-100,  P/N  9329-200)  will  be  used, and   a   list   of   all   items   in   containers   provided.      The following   procedures   will   be   complied   with   prior   to shipping: a.   Drain all fuel from tank.  Refer to paragraph 3-14. b.   Connect static ground cable into ground receptacle on fuel tank. WARNING In addition to these procedures, follow all  procedures  for  purging  fuel  tanks given in TM 55-1500- 204-25/1. c.   All    residual    fuel    must    be    removed    and    may require removal of fuel tank access cover plate. d.   Insert  defuel  nozzle  directly  into  tank  and  defuel residual fuel. e.   Remove forward filter cap. f. Connect a one quarter inch ID flexible hose to an inert gas supply such as Argon (item 1, Appx D), Carbon Dioxide (item 2, Appx D), or filtered clean shop air. g.   Put  the  open  end  of  the  hose  into  the  tank  and secure in place. h.   Purge tank for 2 hours at 30 psi. i. Turn  off  inert  gas  supply.  Reinstall  access  cover plate and filler cap, and allow tank to set for 3 hours. 3-37