How to read P&ID’s to get most out of it

Good bridge from legacy plant docs to modern ops; the chapter on control valve symbols where they decode fail-open vs fail-closed and the interlock bubbles stuck. Mostly practical for oilgas/chemicalpharmaceutical folks moving into prod support—wasn't sold on the light treatment of control narratives, wished for a short PR-style checklist.

Useful refresher for engineers who touch ops docs but don't live in P&IDs; the Module 2 legend vs line-type walk-through, especially the control loop around FCV-101, stuck. mostly practical for onboarding new hires; wasn't sold on the quiz pacing, but it's helped cut review cycles and back-and-forth with ops.

The labs pushed me to face some sloppy habits I’ve carried from skimming drawings in prod incidents. The section on tracing a pump trip across the P&ID in Lab 2, especially following the PSV back to the header, stuck because it mirrored a real oilgas PR I reviewed last quarter. It’s practical for day-to-day work: reading intent, not just symbols, and spotting where arch assumptions creep in when infra or ops hands you a diagram. I’ve already shared notes with my team after the chapter on interlocks vs permissives; that example cleared up a debate we had around k8s-style “fail closed” thinking leaking into plant controls. wasn't sold on the pacing in the early symbol glossary, and I wished there was more on batch sequences for chemicalpharmaceutical contexts, but mostly it respected that I’ve got a job and limited time. The course doesn’t babysit, and that’s fine.