The stripping system is aligned in basically the same manner as described for stripping ballast tanks. Proceed as follows: 1. Open the valve on the single-valved stripping manifold to the tank to be stripped. 2. Open the valve on the flood and drain manifold leading to the stripping main. NOTE Step 2 is necessary only for tanks that are designated JP-5 or ballast. 3. Open the necessary valves in the stripping main leading to the suction header of the stripping pump. 4. Open the stripping pump inlet valve. 5. Open the stripping pump discharge valve. 6. Open the cutout valve from the discharge header leading to the contaminated-JP-5 settling tank. 7. Start the motor-driven stripping pump. Take frequent samples of the JP-5 being dis- charged. When a sample of clean, bright, water-free JP-5 is obtained, the tank is stripped. Close the valve on the single-valved stripping manifold, and open the valve to the next tank to be stripped. Strip all tanks in the same manner. NOTE The clean JP-5 remaining in the system between the single-valved stripping manifold and the stripping pump from the previously stripped tank MUST be discharged past the test connection before a conclusive sample can be obtained from the next tank to be stripped. This can be accomplished by having a general knowledge of the capacity of the stripping sys- tem piping between the two points and the capacity of the stripping pump. Run the pump accordingly. Allow extra running time for a safety factor. An example is, if the pipe capacity is 160 gallons and the pumps rated capacity is 50 gpm, then the pump should be operated for 4 minutes before a sample of the next tank is taken. When all storage tanks have been stripped, stop the pumps and close all valves in the system. The service tanks can be stripped in basically the same manner as the storage tanks by using the motor-driven stripping pumps. But, this should rarely, if ever, be necessary except when completely emptying the service tanks (the last 24 inches of fuel) before maintenance, cleaning, etc., and to remove the wash water after a cleaning operation. If the storage tanks are allowed adequate settling time and are properly stripped, and if the centrifugal purifiers are maintained and operated properly, there should NEVER be enough water in a service-tank to require using the motor-driven stripping system for normal stripping purposes. Service tanks are normally stripped by use of the hand-operated stripping pump. The procedure used is as follows: 1. Open the valve on the suction side of the strip- ping pump leading to the service tank to be stripped. 2. Open the valve on the discharge side of the stripping pump. 3. Operate the pump handle until clean fuel is observed in the discharge line (as indicated by the bull’s-eye sight glass). 4. Open the test connection and take frequent samples. Pump until a sample of clean, bright, water- free JP-5 is obtained. TRANSFER SYSTEM OPERATIONS Transferring JP-5 internally is accomplished by the three individual transfer pumps in each of the forward and after pump rooms. Transferring From Storage to Service When transferring from storage to service tanks, use the following procedure: 1. Strip all tanks concerned, both storage and service. 2. Empty the purifier sump drain box. 3. Arrange the tank emptying sequence, Empty the overflow tank first, the slack tanks second, and the tanks that have had the longest settling time last. 4. Open the following valves: a. Selected tankside manifold valves. b. Selected transfer mainside manifold valves. NOTE Ensure that the telltale valves are closed. c. All valves in the transfer main branch header between the manifolds and pump suction header. 4-68