Proving It Works: IEC 61511 Part VI, FAT, SAT, Validation and the Five Stages of Functional Safety Assessment

Deep End Era. Engineering with Sankalp · Oct 28, 2026 · 1h 5m

The program is clean and the hardware is built. Now Train 4 has to prove its safety instrumented functions work before a single molecule of gas goes into the separator. In a factory test hall in Europe, on a hot site in the Gulf, and in a meeting room where an independent assessor holds the final say, Noor Al Shamsi learns that a test can pass and still prove nothing, and that the most important stage of assessment is the one most projects skip.

Chapters

00:00:00 Three words that sound the same

00:04:11 What a FAT can and can't prove

00:07:51 Day four in the test hall

00:11:29 Installation…