USCG Exam PracticeBearings, lubrication, and care of machine parts
Federal regulations require that steam turbine driven propulsion and auxiliary generating machinery depending on forced lubrication must be arranged in which manner with respect to lubrication system failure?
- A. An alarm must sound and the watchstander must manually shut down the machinery
- ✓ The machinery must shut down automatically upon failure of the lubricating systemCorrect
- C. An independent auxiliary lubricating pump must start automatically and maintain operation
- D. A gravity tank must supply emergency oil until the machinery is manually secured
Why B is correct
46 CFR §56.50-80(g) states 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 emergency oil supply requirement in §56.50-80(i) applies specifically to steam driven propulsion machinery and must sustain lubrication only until the equipment comes to rest during automatic shutdown — it does not maintain operation.
Cited:46 CFR §56.50-80(g)