Campus Placement Preparation for Chemical Engineers

A: Option A would cause transient alarms only during instrument air loss, not a persistent mismatch. Option B leads to documentation confusion but doesn't flip control logic in the PLC. Option C affects response time, not steady-state valve action. Option D explains why the DCS logic and physical response disagree despite tolerances being technically met.

A: Option A solves separation physics but violates layout constraints. Option B meets space limits yet risks carryover during slugs. Option C improves inlet momentum handling but still fails the footprint constraint. Option D aligns with GOR, slug control, and the stated plot limitation.

A: Option A is addressed by fire-case PSV sizing even if margins are tight. Option B is a classic scenario PSVs are designed to handle. Option C leads to rapid pressure rise in liquid with no vapor space, which a standard PSV may not relieve. Option D is mitigated as long as the PSV setpoint and capacity cover the surge.

A: Option A causes noise and head loss, not elevated discharge pressure. Option B degrades performance uniformly without overheating rapidly. Option C manifests primarily as suction-side issues. Option D matches the high head, low flow, and thermal rise observed.