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What is MDGOH?
SSDG overheating
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What are the indications of SSDG Overheating?
- Gauge JW temp above 206 F
- JW temp alarm 217 F
- High or low water level in expansion tank
- Low seawater pressure 10 psi
- Low JW alarm 10 psi
- Low LO alarm 46 psi
- High LO alarm 198 F
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When is controlling action required?
When JW temp is between 206 F and 217 F.
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What are the Controlling Actions of the EPCC?
- EOOW, SSDG overheating
- Start/parallel standby SSDG
- Remove electrical load from affected SSDG
- Monitor JW temp on affected SSDG
- EOOW, SSDG overheating. SSDG started and paralleled to the bus. Electrical load removed from SSDG.
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What are the Controlling Actions of the EOOW?
- OOD, No. _ SSDG overheating.
- OOD _ SSDG overheating. _ SSDG started and paralleled to the bus. Electrical load removed from _ SSDG.
- CRT, align _ SSDG emergency cooling and monitor JW temp.
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What are the Controlling Actions of the Rover/CRT?
- EOOW, manned and ready
- Align no _ SSDG emergency cooling and monitor JW temp.
- EOOW, _ SSDG emergency cooling aligned, JW temp increasing/decreasing.
- NOTE: If JW temp exceeds 217 F proceed to Immediate Actions.
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What are the Immediate Actions of the EPCC?
- EOOW, No. _ SSDG overheating uncontrollable.
- E-stop _ SSDG. Verify GCB opens.
- Start STBY SSDG.
- EOOW, STBY SSDG started and is ready for electrical load.
- EOOW, No. _ SSDG overheating uncontrollable, No. _ SSDG E-stopped. Electrical plant configuration is _, with ships load of _ amps and _ kw on port bus, _ amps and _ kw on stbd bus.
- What are the Immediate Actions of the EOOW?
- OOD, No. _ SSDG overheating uncontrollable.
- Order EPPC to close STBY GCB once STBY SSDG started.
- OOD, No. _ SSDG overheating uncontrollable, No. _ SSDG E-stopped. Electrical plant configuration is _.
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