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

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

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

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<strong>NWP</strong> 4-<strong>01.4</strong>J.4.2.1 Entire Hose Appears Uninflated DuringInitial Pig LaunchJ.4.2.1.1 Cause1. No blowdown air supply.2. Valves not properly aligned.3. Pig is stalled in coupling.J.4.2.1.2 Remedy1. Check blowdown air supply. Blowdown air supplygauge (3) should read, at a minimum, 75psig.2. Ensure that fuel shutoff valve (1) and dumpvalve (8) are closed and that quick-closing fuelvalve (2) and blowdown shutoff valve (4) areopen. Also ensure that hose crimper (6) is removedfrom hose.3. Close blowdown shutoff valve (4) and opendump valve (8) to bleed air from fuel riser. Openquick-disconnect coupling (7) and ensure thatend of pig (5) has been inserted far enough intohose (about 2 inches (50.8 mm)) so as not to interferewith quick-disconnect coupling. Pigshould fit tightly inside hose. Reconnect couplingand proceed with cleanout operation.J.4.2.2 Part of Hose Length Appears Inflated.Part of hose appears inflated and part appears uninflated.Hose pressure gauge (9) indicates steadilyrising pressure.J.4.2.2.1 Cause. Pig stuck in hose.J.4.2.2.2 Remedy. Remove all severe kinks in hose,and lift and drop hose on the deck to help start pig movingthrough hose.J.4.2.3 Entire Length of Hose Appears Inflated.Entire length of hose appears inflated (up toNATO coupling). Hose pressure gauge (9) indicatessteadily rising pressure.J.4.2.3.1 Cause. Pig catcher (14) not venting airfrom hose.J.4.2.3.2 Remedy. Close blowdown shutoff valve(4) and open dump valve (8) to manually vent hose.When hose pressure gauge (9) reads zero psig, signalreceiving ship that blowdown is completed.J-8 ORIGINAL

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