Engine 2014: Steam Plants

1. A Shut the steam valve at once, open the drain valve until all moisture is drained, shut the drain line valve, and slowly open the steam valve again.
2. B Continue to fully open the steam valve and partially open the drain line valve until all moisture is drained and then  shut the drain line valve.
3. C Stop opening the steam valve, open the drain line valve, resume opening the steam valve slowly, and shut the drain line valve after the steam valve is open fully.
4. D Increase the speed of opening the steam valve to rapidly heat the line to stop the water hammer.

Tip: press A-D to answer