Various diesel engines onboard your offshore...

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Question 1 of 2066636eef28f7522a1c51fe96

Various diesel engines onboard your offshore supply vessel are started by means of either vane-type or air- turbine air-starting motors. At a minimum, in the absence of automatic drain valves, how often should moisture separators be drained of moisture while the vessel is underway?

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🔍 Key Concepts

• Compressed air systems for engine starting and why water in the lines is dangerous • Typical maintenance intervals for safety‑critical items vs. routine housekeeping items • Difference between “at a minimum” and “as needed” in maintenance language

💭 Think About

• Think about what happens if water accumulates in an air‑start system during a voyage—how quickly could that become a problem? • Compare how often you would reasonably check something that can directly affect engine starting and damage equipment vs. something that is only cosmetic. • Ask yourself which interval would be considered too long given that the vessel may need to start engines or emergency equipment at any time while underway.

✅ Before You Answer

• Is the chosen interval frequent enough to prevent significant water accumulation in the air system? • Does the interval match what you’d expect for critical machinery protection, not just convenience? • Does the phrase “at a minimum” suggest a relatively short or long interval between required drainings?

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