USCG Exam PracticeAuxiliary machinery and mechanical systems
According to 46 CFR §56.50-80, what automatic action is required of steam turbine driven propulsion and auxiliary generating machinery that depends on forced lubrication, upon failure of the lubricating system?
- A. The machinery must automatically switch to an emergency gravity-fed oil supply.
- B. An alarm must sound in the engine room and on the bridge simultaneously.
- ✓ The machinery must be arranged to shut down automatically.Correct
- D. The machinery must reduce to half speed until lubrication is restored.
Why C is correct
46 CFR §56.50-80(g) requires that steam turbine driven propulsion and auxiliary generating machinery depending on forced lubrication must be arranged to shut down automatically upon failure of the lubricating system. The automatic emergency oil supply described in option A applies specifically to steam driven propulsion machinery under §56.50-80(i), not to the shutdown requirement of §56.50-80(g).
Cited:46 CFR §56.50-80