IA Boiler Operator Practice Questions - Iowa Boiler Operator License Exam

What is the correct procedure for blowing down a boiler's water column?

Open the drain valve quickly, allow water to flush through, then close the valve and verify proper water level indication Slowly open the drain valve and leave it open for 30 minutes Close the steam valve first, then open the drain valve Blow down the water column only when the boiler is offline

Correct Answer:

Open the drain valve quickly, allow water to flush through, then close the valve and verify proper water level indication

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