switches, alarms and indicators. Specifically each console contains the following: 1. A mimic diagram colored to indicate JP-5 (purple), drainage (green), stripping (red), and miscel- laneous (black) systems operated and/or monitored from the control console. The mimic also indicates the outline of the ship and shows components in their relative locations. Monitoring and control devices ap- pear near or in the symbol served. The mimic on each console shows only the system served by the adjacent pump room except the filling and transfer mains; the filling system on 2nd and main deck are shown on both consoles. The drainage and ballast system shown is the part that serves the JP-5 or ballast and JP-5 over-flow or ballast tanks. 2. Liquid-level indicators for the JP-5, JP-5 or ballast, JP-5 overflow or ballast, JP-5 service, JP-5 defueling and contaminated-JP-5 settling tanks. 3. “Full’’-indieator (red) lights for each tank. These lights are located adjacent the level indicator and are on when the tank reaches its operating capacity. 4. Seawater-detector (green) lights for JP-5 or ballast and JP-5 overflow or ballast tanks. These lights are located adjacent the level indicator and are on when seawater is present within the tank. These tanks also have white lights, which indicate the presence of JP-5 within the tank. 5. Control switches for starting and stopping the JP-5 service pumps. 6. Indicator lights for valve positions (open/- shut) for all motor operated valves and other valves (manually operated) whose position must be monitored at the console. 7. Power indicator lights for JP-5 purifiers and pumps (except auxiliary JP-5, jet engine test facility, JP-5 defuel pumps). 8. Audible and visible overflow alarms that warn when any tank having an independent overflow that overflows overboard reaches the 98 percent full level. A control switch is provided to silence the audible alarm. 9. Seawater cleavage indicator lights for con- taminated-JP-5 settling tanks. The lights come on suc- cessively when seawater in the tanks reaches the 6-inch, 2-foot, 4-foot and 6-foot levels. 10. Control switches (open/shut) for positioning the selected electric motor operated valves. 11. Override switches that reenergize the circuit that closes tank cutout valves when the tank reaches operating capacity. This allows complete tank filling when desired. One switch controls a specific zone. 12. Pressure gages for firemain water to eductors and eductor suctions. These are the eductors used to deballast JP-5 or ballast and JP-5 overflow or ballast tanks. Circuit Description You might ask why an ABF needs to know the control circuits of a JP-5 console. We are operators of the console, not electrical repair personnel. In one respect, you are right, we do no repair work on the consoles. But you need to know how the circuits are interconnected to prevent specific things from hap- pening, such as a storage tank valve that will not open because a saltwater level light is on for that tank. Each console includes circuit operations as fol- lows: 1. Circuit for JP-5 or ballast tank and JP-5 over- flow or ballast manifold valve interlocked with mani- fold root valve. This circuit actuates the manifold valve either open or shut by a switch on the control console. Additional features of this circuit are: a. Circuit automatically shuts manifold by high level detector circuit. b. Circuit interlocks the root valve operation with the manifold valve. The root valve opens when any manifold valve is opened. The root valve closes when all manifold valves are closed. c. Circuit does not allow manifold valve to open if sea water detector circuit indicates water in the tank. d. Circuit monitors valve positions by open and shut lights on control console. 2. Circuit for JP-5 service tank suction and recir- culating valves. This circuit actuates the suction valve either open or shut by a switch on the control console. The circuit interlocks the recirculating valve with the tank suction valve for the same tank so both valves open and shut simultaneously, circuit monitors valve position by open and shut lights on control console. 3. Circuit for JP-5 tank and JP-5 service tank fill manifold and gate valves. This circuit actuates the valves either open or shut by a switch on the control console. Circuit automatically shuts the valve by a high 4-58