4. The transfer mainside manifold valves of se- lected tanks to be filled. 5. Tankside manifold valves of selected tanks to be filled. NOTE Deep centerline and double-bottom tanks are typically filled first during a refueling op- eration. 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- plenishing operation. 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 fueling station. 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 tanker’s maximum pumping rate and discharge pressure and the earner’s 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 stations. 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 first. 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 board. 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. NOTE CAUTION The actual hookup of the fueling hoses is accomplished by personnel from the deck de- partment. 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. 4-65