UNDERWAY REPLENISHMENT NWP 4-01.4 - Historic Naval Ships ...

NWP 4-01.43.9.1.6.3 Combination Method. The combinationmethod consists of a back suction, followed by ablowdown, followed by a second back suction. Thecombination method leaves the least amount of fuel inthe hose. The most effective procedure for performingthe combination of blowdown with back suction is:1. Delivery ship secures pumping.2. Both delivery ship and receiving ship close riservalves.CAUTIONWhen fueling two stations to a ship with apressure-compensated fuel system, exercisecaution in valve alignment to ensure fuelingor blowdown at one station does not forcefuel out of the other station.3. Delivery ship aligns lowest tank with excess capacityto risers.4. Delivery ship aligns tank recirculation systemand opens riser valves to drain hose and piping.5. Delivery ship closes riser valves once hose goesflat.6. Delivery ship connects low pressure air hose torisers, pressurizes hose to 80 psi (552 kPa),and removes low pressure air hose from risers.NoteGravity drain (with venturi effect) removesenough fuel from the hose that pressurizingthe hose will force the fuel remaining in thehose to the probe end.7. Upon delivery ship’s signal, the receiving shipopens riser valves.8. Delivery ship signals the receiving ship to closeriser valves after approximately 3 minutes.9. Delivery ship aligns lowest tank with excess capacityto risers.10. Delivery ship opens riser valves to drain hose andpiping a second time (approximately 2 minutes).11. Delivery ship closes riser valves.12. Both ships commence breaking rigs.3.10 SINGLE-HOSE FUEL STREAM RIGThe single-hose fuel STREAM rig (Figure 3-23) is atensioned spanwire rig with the span wire and saddlewhips tended by winches at the delivery station.The hose can be rigged with:1. A probe to a single- or double-probe receiver(preferred method)2. A Robb coupling to a Robb receiver3. An adapter for stepping down to a 2-1/2-inch(63.5 mm) hose4. A NATO breakable-spool hose coupling to aNATO breakable spool.The span wire is passed to the receiving station by messengerand the spanwire end fitting secured at the receivingstation. The span wire is tensioned by hauling in slackwire and compressing the ram tensioner. The single-hoserig is hauled along the tensioned span wire to the receivingstation. The receiving station hooks the fuel hose to itsfuel connection and the rig is ready for fuel transfer.Hardware for delivery and receiving stations is listedin Figures 3-31 and 3-32 at the end of the chapter.3.10.1 Fuel STREAM Station Rigging. FuelSTREAM station rigging varies slightly, depending onthe type of connection required at the fuel riser. Rig singleprobe to single-probe receiver as shown in Figures3-5 and 3-23 and single probe to double-probe receiversas shown in Figure 3-10. When the receiving stationis rigged to receive a Robb coupling, rig as shown inFigure 3-24.Rig passing procedures for all single-hose rigs arebasically the same. The probe has automatic connectand disconnect features. All other couplings must bemanually connected and disconnected and require ariding line to retain the hose at the receiving station.3.10.2 Preparing Fuel STREAM With SingleProbe(1) DELIVERY SHIP1. Fake out the STAR messenger and attach the inboardend to the trolley carriage, as shown inFigure 3-25.3-28 ORIGINAL