The main propulsion diesel engines on the...

The main propulsion diesel engines on the...

Question 1 of 31048fy_heal_CREATE_q694_2027

The main propulsion diesel engines on the fishery research vessel to which you are assigned are started with vane-type air-starting motors. At a minimum, in the absence of automatic drain valves, how often should the starting air receivers be drained of moisture while the vessel is underway?

Question 1 of 31048

Q

The main propulsion diesel engines on the fishery research vessel to which you are assigned are started with vane-type air-starting motors. At a minimum, in the absence of automatic drain valves, how often should the starting air receivers be drained of moisture while the vessel is underway?

🔍 Key Concepts

• Starting air systems on diesel engines and why water/moisture is a problem • Typical engine room watchkeeping routines while underway • What "in the absence of automatic drain valves" implies for manual draining frequency

💭 Think About

• Think about how quickly condensation can build up in air receivers during normal operation and temperature changes. • Consider what is realistic for an engineer on watch to do regularly, versus what would be too infrequent to be safe. • Ask yourself: if water accumulates in an air receiver, what risks does it pose to starting reliability and system safety, and how would that influence minimum draining frequency?

✅ Before You Answer

• Compare which answer choices match a normal engine room daily routine while underway. • Eliminate any options that would clearly allow excessive water accumulation before attention is given. • Focus on the phrase "at a minimum" – this points to the least frequent interval that is still considered acceptable, not what might be done more often in practice.