4. The transfer mainside manifold valves of se-
lected tanks to be filled.
5. Tankside manifold valves of selected tanks to
Deep centerline and double-bottom tanks
are typically filled first during a refueling op-
The below-deck piping and valves are now
aligned for receiving JP-5 aboard.
Just before the tanker is received alongside, spe-
cific action must be taken by certain departments to
ensure maximum safety and security during the re-
The officer of the deck controls the smoking
lamp. The operations watch officer makes sure certain
high-frequency transmitters, radars, and other elec-
tronic equipment in the vicinity of the fueling stations
are secured. The damage control watch officer en-
sures that additional firemain pumps are put on the
line and that AFFF pumping stations are manned. The
aviation fuels officer makes sure no mobile equip-
ment or electrical winches (not required in the replen-
ishing operation) are operated within 50 feet of the
As the ship makes its final approach and steadies
alongside, shot lines are sent over from each station.
By these first lines, the telephone cables, distance
line, and hose messenger are sent back. As soon as
communication is established between stations, the
JP-5 below decks supervisor clarifies with the tanker
final information, such as the tankers maximum
pumping rate and discharge pressure and the earners
maximum receiving rate and pressure.
If acceptable fuel is being received, open the down-
comer and close the flushing valve. Start replenish-
ment of aviation fuels at a slow rate.
When JP-5 enters the tanks, as indicated by the
tank level indicators or sounding teams, order the
tanker to start pumping at a normal rate. Log the
starting time and continue taking samples to ensure
the receipt of clean bright, water-free JP-5. Log the
quality of the samples taken and pressure of the JP-5
being received at the filling connection.
The receiving pressure at the filling connection
should be about 40 psi to obtain the designed maxi-
mum filling rate. CV/CVNs can typically receive JP-5
at a rate of 360,000 gallons per hour when using two
As the storage tanks are being filled, you should
check the volume of fuel in each tank by observing the
tank level indicators and by sounding the tanks. In
general, the tanks nearest the downcomer will fill
Begin sounding at the initial flow. Sounding
should be taken periodically until the tanks reach 80
percent capacity. From this point on, soundings
should be continuous.
When 80 percent capacity is reached in the first
nest of tanks opened, open the tankside valve to an-
other nest (minimum of six tanks-three port and
three starboard) at the same time; throttle the TANK-
SIDE valves to the first nest of tanks; and top them off
to at least 95 percent capacity. All storage tanks,
except overflow tanks, can be filled to almost 100
percent to increase the amount of fuel carried on
All storage tanks in one nest, both port and star-
board, can be opened for simultaneous filling, but
care must be exercised when topping off to prevent
overtaxing the overflow line.
The actual hookup of the fueling hoses is
accomplished by personnel from the deck de-
The initial flow of JP-5 is received through the
flushing valve and directed into the contaminated set-
tling tanks. Before receiving JP-5 into the storage
tanks, samples should be taken at the main deck fill
connection in containers that permit visual inspection.
Overflow mains for overflow tanks are
typically designed for an overflow rate of 1,500
gpm, and each storage tank has an overflow rate
of 500 gpm.
After the amount of JP-5 being received per min-
ute has been determined, the tanker can be given an
estimated stop pumping time.