Chapter 9ENGINEERING CASUALTY CONTROL
3. When permission is granted, replace or
repair the valve.
4. Test for proper operation.
5. If the valve is operating properly, report
to the engineer officer and the bridge.
OVERHEATING COUPLING
apply pressure to the freshwater side of the system
by opening the valve from the ships freshwater
supply system, and check for leaks.
5. Upon detection of the leak, plug the tubes
or install another core.
6. Upon completion of the repairs, notify the
engineer officer.
1. Check the system to determine the cause
of overheating.
DURING HOSTILITIES, WITH
ACTION PROBABLE
2. Regulate the valves manually to maintain
proper operating temperatures.
3. Notify the engineer officer and the bridge.
If it is necessary to secure the engine to effect
repairs, request permission.
4. When permission is granted, secure the
engine and effect repairs.
5. Upon completion of repairs, notify the
engineer 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 the
speed required.
COUPLING THROWING OIL
1. Check the system. Attempt to repair the
leak.
2. Report to the engineer officer and the
bridge. If the leak is not repaired, request per-
mission to secure the engine for repairs.
3. When permission is granted, secure the
engine, conduct an investigation, and make
necessary repairs.
2. Reduce the saltwater cooling pressure to the
heat exchanger by using manual control.
3. Keep a constant watch on the supply of
freshwater in the expansion tank; keep the tank
refilled from the ships service freshwater system,
to replace water lost through the leak. Observe
all gages constantly for normal operating
pressures and temperatures. Keep the engineer of-
ficer informed of operating conditions.
4. At the earliest possible time, make the
necessary repairs.
OTHER PROPULSION PLANT
CASUALTIES
4. Upon completion of repairs, test the
coupling.
5. Report to the engineer officer and the
bridge.
Examples of other casualties which may af-
fect propulsion plant operation are described
below.
HEAT EXCHANGER CASUALTIES
OVERHEATING MAIN SHAFT
BEARINGS
Following are the procedures to be followed
under various conditions of operation when diesel
engine heat exchanger casualties occur:
Hot bearings may generally be traced to one
of the following causes:
UNDER NORMAL STEAMING
CONDITIONS
1. Notify the engineer officer and the OOD,
and request permission to secure the engine.
2. When permission is granted, secure the
engine.
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 journal
surface.
3. Secure both the saltwater inlet and outlet
valves to the heat exchanger.
4. Remove the visual inspection plate on the
exchanger. Plug the expansion tank vent, and
If the trouble is due to insufficient lubrication
and is discovered before the bearing metal has
wiped, an abundant supply of oil should gradually
bring the bearing back to its normal operating
temperature.
9-9