04 / Acceptance and handover
Prove the result under a representative production condition
Challenge planned stop and low-flow boundaries, trace oldest material to destination, and verify timer logic, alarm, purge or divert response, genealogy and restart release. Review as-built documents and inspect fabrication, then verify routes, pressure, flow, drainability, segregation, recovery, alarm response and representative transferred-product condition. Put the sample or test material, method, instrument, production state, duration, limit, witnesses, retained record and deviation authority in the protocol before testing begins. Requalify when a product, package, site, speed or connected system invalidates the accepted basis.