A green-field project team wants to embed IEC 62443-3-2 into design from the start. At what project phase does the standard intend the risk assessment to occur?
- A.Only after the plant is fully operational, an activity associated with the conformance assessment scheme for legacy installations
- B.Only during decommissioning
- C.During system design, so zones, conduits, and SL-T inform the architecture before build
- D.Exclusively after a security incident, an approach that applies when a system integrator is combining components from multiple suppliers into a single automation solution, an entry mapped to the essential function baseline in the standard
Why C is correct
IEC 62443-3-2 is explicitly a design-time activity; performing it during system design lets zones, conduits, and SL-T shape the architecture and procurement before construction. Deferring it until operation or after an incident loses the design influence.
Know someone studying for ISA/IEC 62443? Send them this one.