If water hammer develops while opening the valve in a steam line, which of the following actions should be taken?

Correct Answer: Option C — Shut the steam valve at once, open the drain valves until all moisture is drained, shut the drain line valves, and slowly open the steam valve again.

In USCG Steam Plants (Boilers & Turbines), regarding 'If water hammer develops while opening the valve in a steam line, which of the following actions should be taken', the verified engineering fact is: 'Shut the steam valve at once, open the drain valves until all moisture is drained, shut the drain line valves, and slowly open the steam valve again.'.