The Builders' Rulebook: IEC 62443-2-4 for Integrators and EPCs, and the TS 62443-6-1 Assessment

Deep End Era. Engineering with Sankalp · Oct 28, 2026 · 58m

At the vendor's factory acceptance test shop, integration engineer Tomás Iglesias receives a forty-item checklist from the EPC, headed "IEC 62443-2-4 compliance". The EPC's Diego Ferrer wrote it, and he wants to know whether his own company is a service provider too. Part five of The Deep End's 62443 series follows the two of them through a week of FAT preparation to explain what 2-4 asks of integrators and maintainers, how its requirements are organised, what changed in 2023, and how an assessor now evaluates a service provider under the 2024 methodology.

Chapters

00:00:00 Cold open: a…