🔍 Key Concepts

• Relationship between condenser vacuum and steam/condensate flow in a closed cycle • How air in-leakage or excess non‑condensables affect condenser vacuum • Which systems actually bypass or reduce heat load on the main condenser during maneuvering

💭 Think About

• For each option, ask: does this condition directly affect how well the condenser can remove heat and condense steam, or does it affect something else in the plant? • Which choices would introduce extra vapor/air into the condenser, and which would reduce the amount of steam reaching it? • During maneuvering, what does recirculating condensate do to the condenser’s load and vacuum compared with normal steaming?

✅ Before You Answer

• Identify which options would add steam or air to spaces that ultimately vent to the condenser or vacuum system • Identify which option would reduce the condensing load and therefore tend to improve, not worsen, vacuum • Check which choice is not directly related to condenser operation (more related to boiler efficiency or feedwater control)