The exhaust steam line from a turbine requires what to clean the steam?

• A. Oil separator
• B. Filter
• C. Demister
• D. Deaerator

Answer: (A)

In turbine exhaust lines, oil from the lubrication system can become entrained in the steam. An oil separator is designed to remove these oil droplets from the steam, yielding oil-free steam for downstream processes (like the condenser) and protecting equipment from oil contamination. The other options don’t address this specific issue: a filter targets solids, a demister mainly removes liquid droplets in gas streams (not specifically oil in steam), and a deaerator removes dissolved gases from feedwater, not from exhaust steam.