Engineering · Steam — Safety
A water gauge glass on a boiler should be blown down regularly to:
- ALower the boiler pressure
- BVerify it is reading the true water level and not plugged✓ Correct
- CAdd chemicals to the boiler
- DCool the steam drum
Explanation
Blowing down the gauge glass clears the connections and confirms the glass shows the true level. A plugged glass can show a falsely high level while the boiler is actually low on water.
Authority: Steam Plants (USCG engineering topic)
Practice the full Engineering bank
Free spaced-repetition quizzing across 2190 USCG exam questions — it schedules your reviews so the ones you miss come back until they stick.
Related Engineering questions
- Steam — Safety
A boiler safety valve is set to:
- Steam — Safety
On a boiler fitted with a superheater, the superheater safety valve is set to lift:
- Steam — Safety
The single most dangerous condition for a fired boiler is:
- Diesel — Operating Cycle
In a four-stroke-cycle diesel engine, the events occur in which order?
- Diesel — Operating Cycle
Compared with a four-stroke engine of the same speed and cylinder size, a two-stroke-cycle diesel produces a power stroke:
- Diesel — Air Systems
The primary purpose of scavenging in a two-stroke diesel engine is to: