Section III. OPERATING PROCEDURES
If equipment fails to operate, refer to
troubleshooting, procedures in Chapter 3,
General. The operator should be thoroughly
familiar with the location and function of every ;on-
trol before operating the system. Other personnel
comprising the crew should be thoroughly briefed in
the operation of the system and be familiar with any
shutdown or stopping procedures under emergency
2-15. Controls and Instruments.
a. Filler and Discharge Valve (Tanks, NSN
5430-00-268-8187, NSN 5430-01-215-7525, and NSN
5430-00-182-8181). The filler and discharge control
valve (fig. 2-12) is the shut-off mechanism between the
collapsible tank and any other portion of the system.
The filler and discharge control valves for tanks, NSN
5430-00-052-3412 and NSN 5430-00-641-8552 and also
typically illustrated in figure 2-12.
b. Vent Assembly (All Tanks). The vent assembly
(fig. 2-3) contains a pressure relief cap which opens
when the tank is subjected to an internal pressure of
0.10 psi (0.00680 atmospheres).
c. Drain Control Valve (Excluding Tank NSN
5430-00-268-8187). The drain control valve allows the
residual fuel or water and sludge blanket to be drain-
ed from the tank when it becomes necessary (fig. 2-8).
Filling Tank (All Tanks).
Over age tanks can become weakened and
rupture, thereby spilling flammable fuel on
the ground. Care must be taken to ensure
that over age tanks are not left in opera-
tion. Failure to heed this warning can cause
injury or death to personnel.
Persons operating the tank must
periodically check dates on data plates to
verify that the tank is safe for use. Each
tank has a one (1) year service life begin-
ning on the date when it is first filled. Shelf
storage life is five (5) years from the date of
manufacture. Users must initiate action to
replace over age tanks. Failure to heed this
caution can cause tank rupture.
(1) Inspect tank to verify that it is set up as
shown in figures 1-1, 1-2, 1-2.1, or 1-3.
(2) Check drain control valve (fig 2-8) to verify
that it is in closed position. (Excluding Tank, NSN
(3) Check the vent assembly pressure relief valve
(fig. 2-3) to verify freedom of operation.
(4) Check the filler and discharge elbow at the op-
posite end of tank to verify the installation of dust cap
(fig. 2-5). (Tanks, NSN 5430-00-182-8181 and NSN
Check the control valve (figs. 2-10 and 2-11)
to verify it is in the closed position.
(6) Attach source of fuel to the control valve.
(7) Activate source of fuel.
(8) Open the control valve by turning handle
counterclockwise (fig. 2-12).
(9) Close the control valve when tank is filled.
Place a filled sandbag under the filler
discharge elbow as shown in figure 2-17.
This support will reduce the stress on the
tank fitting, gasket in the hose coupling,
and the filler-discharge elbow coupling. It
is also recommended that hose connections
on the ground be elevated slightly by
placing sandbags or blocks of wood under
the connection. This will make a bad con-
nection or a leaking connection much easier
to see and avoid creating a fire hazard.
(10) Deactivate source of fuel.
(11) Disconnect source of fuel from the control
b. Emptying Tank (All Tanks)
(1) Inspect tank to verify that it is set up
(2) Attach emptying source to the control valve.
(3) Open the control valve.
(4) Activate emptying source.
(5) Close the control valve when tank is empty.
(6) Deactivate emptying source.
(7) Disconnect emptying source from the control
(1) Empty fuel from tank (para. 2-15b.).
(2) Disconnect the filler and discharge hose from