Which of the labeled items within the illustrated steam drum represents the last line of defense in helping to prevent moisture carryover into the saturated steam leaving the steam drum? Illustration SG-0011
• Steam drum internals are arranged in the direction of steam flow from water surface to steam outlet • Devices that stop water droplets include baffles, screens, scrubbers, and dry pipes • The last line of defense will be the separator that steam passes through immediately before the outlet nozzle
• Trace in the illustration how steam moves from the water surface toward the main steam outlet connection at the top of the drum. Which labeled item does the steam go through just before leaving? • Compare which components mainly control water level or distribution versus those that are specifically in the steam space to dry the steam. • Look at which labeled parts are submerged in water and which are in the steam space only. Which of the answer choices is located in the steam space closest to the outlet?
• Verify which label in the picture is directly connected to, or aligned with, the main steam outlet nozzle at the top of the drum. • Confirm that the item you choose is in the steam space above normal water level, not in the water space or downcomer area. • Make sure the component’s function is to separate or dry steam (baffles, screens, or dry pipe), rather than to feed, blow down, or circulate water.
No comments yet
Be the first to share your thoughts!