Which phase includes updating the Cx plan?

Which phase includes updating the Cx plan?

• A. Design
• B. Construction
• C. Acceptance
• D. Post-Acceptance

Answer: (B)

The Cx plan is a living document that must reflect what’s actually installed and tested on site. During Construction, equipment is being installed, systems are integrated, and field changes or design clarifications come up. Updating the plan at this stage ensures test procedures, sequences of operation, responsibilities, and acceptance criteria match the as-built conditions and the evolving project reality. This keeps commissioning activities aligned with what’s happening on site and prevents trying to verify things against outdated information. Design sets up the plan’s framework, and acceptance and post-acceptance focus on verification and occupancy performance, but the practical updates to reflect on-site changes happen during Construction.

The Cx plan is a living document that must reflect what’s actually installed and tested on site. During Construction, equipment is being installed, systems are integrated, and field changes or design clarifications come up. Updating the plan at this stage ensures test procedures, sequences of operation, responsibilities, and acceptance criteria match the as-built conditions and the evolving project reality. This keeps commissioning activities aligned with what’s happening on site and prevents trying to verify things against outdated information.

Design sets up the plan’s framework, and acceptance and post-acceptance focus on verification and occupancy performance, but the practical updates to reflect on-site changes happen during Construction.