6. As each tank becomes full, as indicated by thetank sounding teams, close the valve on the single-valved stripping manifold.7. When all tanks are ballasted, close the sea chestvalve and reposition the lock bar.8. Lock the tankside valve (on the double-valvedfilling and suction manifold) in the CLOSED position.9. Open the telltale valves on the double-valvedmanifold and drain the contents, then close these valves.CAUTIONThereafter, while the tanks are ballastedwith seawater, periodically open the telltalevalves to determine the condition of the tank-side valves and transfer mainside valves.NOTEMost ballast tanks will not fill completely.Some will only half fill due to tank height anddraft of ship. Ballast liquid will seek its ownlevel.OFF-LOADING JP-5When it is necessary to offload JP-5, the servicepumps are used as transfer pumps due to their in-creased capacity. JP-5 is discharged off the ship viathe transfer main, downcomer, filling connection, andthen to a barge, tanker, or fuel farm. Since the servicepumps are used as transfer pumps for off-loadingJP-5, the piping and valves in the filling and transfersystem and the service system must be aligned toenable the service pumps to take suction from, anddischarge into, the same piping as the transfer pumps.Assume, in this operation, that the entire fuel loadis to be offloaded, including the JP-5 in the servicetanks. This being the case, empty the service tanksfirst, since no special preparations are required to takesuction from these tanks with the service pumps.Off-Loading JP-5 From Service TanksAlign the piping and valves as follows:1. Open the service tank suction cutout valve be-tween the service tank and the service pump suctionheader.2. Open the service pump inlet valve.3. Unbolt and rotate the spectacle flange (or lineblind) to the OPEN position in the cross-connectingpiping between the service pump discharge header andthe transfer pump discharge header. Unlock and openthe gate valve in this same line.4. Open the valve between the transfer pump dis-charge header and the transfer main.5. Open the transfer main bulkhead cutout valvesleading to the downcomer.6. Open the gate valve at the base of the down-comer.7. Open the gate valve at the filling connection.When topside preparations have been made foroff-loading fuel, start the service pumps.When pump discharge pressure reaches 80 psi,SLOWLY open the globe valve on the discharge sideof the pump. Throttle pumps to avoid cavitating andmaintain a minimum of 35 psi back pressure for auto-matic operation of pump motor controllers.The service pumps are now taking suction from aservice tank and discharging overboard via the servicepump discharge header, transfer pump dischargeheader, and transfer main, up through the downcomer,and out the filling connection.Continue the pumping operation as outlinedabove until all service tanks have been emptied. Thensecure the pumps and align the system for emptyingthe storage tanks.NOTEThe remaining 24 inches of JP-5 in theservice tank are consolidated into preselectedstorage tanks by the motordriven strippingpump.Off-Loading JP-5 From Storage TanksThe piping arrangement from the service pumpdischarge header to the filling connection at the refu-eling station remains the same.Align the piping from the suction header of theservice pump to the storage tanks as follows:1. Unbolt and rotate the spectacle flange or openthe line blind valve in the cross-connecting piping be-tween the service pump suction header and the transfer4-71
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
