The Skid at the Boundary: ISO 13849-1, IEC 62061 and IEC 61511, and Who Owns the Safety Function

Deep End Era. Engineering with Sankalp · Oct 28, 2026 · 1h 12m

The compressor skid is beautiful. Stainless, compact, and covered in yellow safety labels in four languages. Its safety controller holds certificates for performance level d and SIL 2. Noor Al Shamsi has one question for the vendor's engineer, Lukas Brandt: which of the plant's hazards does that controller actually protect against? The answer takes a week, three standards and a whiteboard, and ends with a boundary drawing that should have existed before the purchase order.

Chapters

00:00:00 Cold Open: The Skid With Yellow Labels

00:06:14 The Machinery World: ISO 12100 and the Shape of the…