Chapter 9—ENGINEERING CASUALTY CONTROL3. When permission is granted, replace orrepair the valve.4. Test for proper operation.5. If the valve is operating properly, reportto the engineer officer and the bridge.OVERHEATING COUPLINGapply pressure to the freshwater side of the systemby opening the valve from the ship’s freshwatersupply system, and check for leaks.5. Upon detection of the leak, plug the tubesor install another core.6. Upon completion of the repairs, notify theengineer officer.1. Check the system to determine the causeof overheating.DURING HOSTILITIES, WITHACTION PROBABLE2. Regulate the valves manually to maintainproper operating temperatures.3. Notify the engineer officer and the bridge.If it is necessary to secure the engine to effectrepairs, request permission.4. When permission is granted, secure theengine and effect repairs.5. Upon completion of repairs, notify theengineer officer and the bridge.1. Notify the engineer officer and the OOD,and request permission to slow the engine and in-crease speed on the other engine to maintain thespeed required.COUPLING THROWING OIL1. Check the system. Attempt to repair theleak.2. Report to the engineer officer and thebridge. If the leak is not repaired, request per-mission to secure the engine for repairs.3. When permission is granted, secure theengine, conduct an investigation, and makenecessary repairs.2. Reduce the saltwater cooling pressure to theheat exchanger by using manual control.3. Keep a constant watch on the supply offreshwater in the expansion tank; keep the tankrefilled from the ship’s service freshwater system,to replace water lost through the leak. Observeall gages constantly for normal operatingpressures and temperatures. Keep the engineer of-ficer informed of operating conditions.4. At the earliest possible time, make thenecessary repairs.OTHER PROPULSION PLANTCASUALTIES4. Upon completion of repairs, test thecoupling.5. Report to the engineer officer and thebridge.Examples of other casualties which may af-fect propulsion plant operation are describedbelow.HEAT EXCHANGER CASUALTIESOVERHEATING MAIN SHAFTBEARINGSFollowing are the procedures to be followedunder various conditions of operation when dieselengine heat exchanger casualties occur:Hot bearings may generally be traced to oneof the following causes:UNDER NORMAL STEAMINGCONDITIONS1. Notify the engineer officer and the OOD,and request permission to secure the engine.2. When permission is granted, secure theengine.1. Insufficient lubrication.2. Defective oil ring.3. Grit or dirt in the oil.4. Bearing out of line.5. Bearing improperly fitted.6. Poor condition of bearing or journalsurface.3. Secure both the saltwater inlet and outletvalves to the heat exchanger.4. Remove the visual inspection plate on theexchanger. Plug the expansion tank vent, andIf the trouble is due to insufficient lubricationand is discovered before the bearing metal haswiped, an abundant supply of oil should graduallybring the bearing back to its normal operatingtemperature.9-9
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