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What is MDGEO?
MPDE Overheating.
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What are the indications of MDGEO?
- Gauge indicates J/W temp above 185 F.
- J/W high temp alarm 190 F.
- High or low water level in J/W expansion tank.
- Low seawater pressure.
- Low J/W pressure.
- Low L/O pressure.
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NOTE: What actions to take when engine J/W temperature reaches or exceeds 200 F?
Proceed to Immediate Actions.
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NOTE: What actions to take if engine temp reaches or exceeds 200 F??
E-stop engine
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NOTE: When can the combustion air shutoff be used?
Only if the electronic and mechanical E-stops fail
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NOTE: What happens to the engine if its stopped without allowing time for cooldown?
may cause damage to the engine
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NOTE: When is the best time to bar over the engine after a MLLOP casualty?
At earliest opportunity
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NOTE: When can you stop the L/O pumps?
When the engine has come to a complete stop
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NOTE: How long can a L/O pump run after engine shutdown?
No more than 10 min
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What are the Controlling Actions of the PACC?
- EOOW, _ main engine overheating; temp _ F.
- Shift thrust control to CCS and reduce speed one major speed decrement.
- EOOW, Thrust control shifted to CCS and speed reduced one major speed decrement.
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What are the Controlling Actions of the EOOW?
- IMC, _ main engine overheating. CRT, lay to (space).
- OOD, _ main engine overheating; shifting thrust control to CCS and reducing speed one major speed decrement.
- Order PACC to shift thrust control to CCS and reduce speed one major speed decrement.
- OOD, Thrust control shifted to CCS and _ main engine RPM reduced to _ RPM.
- OOD, _ main engine temp not stable continuing to slow one major speed decrement.
- Proceed to Immediate Actions if temp does not stabilize at AHD 1/3.
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What are the Controlling Actions of the Rover/CRT?
- Manned and ready.
- Investigate:
- J/W and CFW expansion tank for proper water level.
- J/W and CFW pump for proper operation. Start STBY pump if necessary.
- J/W and CFW system for proper alignment.
- J/W temp regulator for proper operation.
- CFW temp regulator for proper alignment.
- Seawater strainer Delta P gauge.
- Seawater pump for proper alignment and operation.
- Take engine L/O sample.
- Engine sump level.
- Engine L/O pump for proper operations. Start STBY pump if necessary.
- Report to EOOW results of investigation.
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What are the Immediate Actions of the PACC?
- EOOW, _ main engine overheating and uncontrollable. Stopping/E-stopping _ main engine.
- E-stop affected shaft.
- Stop affected main engine. Verify clutch disengages.
- Place affected shaft in trailing mode by resetting shaft E-stop and selecting TRAILING.
- EOOW, Thrust control shifted to CCS. _ main engine stopped, clutch disengaged, _ shaft trailing, ECS is in trailing mode.
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What are the Immediate Actions of the EOOW?
- Order CRT to the space.
- OOD, _ main engine overheating and uncontrollable; stopping/tripping _ main engine, clutch disengaged and _ shaft trailing. Thrust control shifted to CCS. Maximum speed available _ knot.
- Verify _ main engine clutch has automatically disengaged, if not, manually disengage/dump _ clutch.
- EOOW, _ main engine clutch is disengaged
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