TM 55-1520-240-23-8
10-2
PURGING OF FUEL TANK WITH INERT GAS
(Continued)
10-2
2.
Remove horn from nozzle (3) of CO2 bottle (4).
3.
Remove fuel tank filler cap (5).
4.
Install grounding receptacle (6) from nozzle (3)
and bottle (4) into helicopter plug (7).
5.
Insert nozzle (3) into open filler hole (8) in fuel
tank (9). Discharge bottle at a flow rate of 1
pound-per-minute.
NOTE
Use two 15 pound CO2 bottles to
purge a main fuel tank. Use one 15
pound bottle for a forward or aft tank.
6.
Test purged tank (9). Use a combustible gas
indicator or equivalent tester. If level of fumes is
not safe, purge until level is safe.
7.
Remove grounding receptacle (6) from helicopter
plug (7). Remove bottle (4).
8.
If personnel will work within the tank, purge with
air (Task 10-3).
9.
Install tank filler cap (5).
FOLLOW-ON MAINTENANCE:
None
END OF TASK
10-26
