Fluid Mechanics

A: Pulling pressure or raising level first drives droplets deeper into the demister, risking re-entrainment and wet gas downstream that can damage compressors. Throttling upstream cuts inlet momentum and gas velocity through the pad, addressing the root cause rather than masking it, and avoids overloading internals that are already near their face velocity limit.

A: Accepting the claim leads to chronic standing liquid, corrosion, and failed drains during operations. With 0.3 m head over 40 m, you have ~3 kPa to spend; Darcy friction for a 3-inch line at even modest flow burns that quickly, and fittings consume the rest, so the physics don't close without additional slope or diameter.

A: Assuming the PSV covers everything lets liquid push through internals and into rotating equipment, where damage is immediate. A PSV lifts on pressure, not level, so with a failed ESD and continuing inflow, overfill and carryover remain credible despite pressure protection.

A: Signing off lets a wrong internal slip into fabrication, leading to chronic carryover or excessive DP once installed. Forcing reconciliation stops a silent design error; vane packs and mesh pads have very different velocity envelopes, and the documents can't both be right.