Recommended Installation Location for "Pressure High" Interlock Instrument on Distillation Column

[omupei]

Hello,
I’m investigating the optimal placement of a "Pressure High" interlock instrument on a distillation column.

Could you please advise on:

1. The recommended installation location (e.g., overhead line, reflux drum, bottom section)?
2. The technical and safety rationale behind that location.
3. Any industry standards or best practices that support this choice.

Thank you in advance for your insights.