Engineering · Diesel — Safety
An oil-mist detector or crankcase relief valve is fitted to guard against a:
- AScavenge fire
- BCrankcase explosion✓ Correct
- CBoiler furnace blowback
- DTurbocharger surge
Explanation
A hot spot can vaporize lube oil into a flammable mist; an oil-mist detector warns of this, and crankcase relief (explosion) doors vent a sudden pressure rise to prevent a crankcase explosion.
Authority: Diesel Engines (USCG engineering topic)
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