Which activity is included in the post-acceptance phase?

• A. Off season FPTs
• B. Verify TAB
• C. Training O&M staff
• D. Cx final report

Answer: (A)

The main idea is that the post-acceptance phase focuses on confirming that the building systems continue to perform as intended once occupancy has begun and operations settle in, often through tests that reveal performance under real-world conditions.

Off-season Functional Performance Tests are included because they verify that systems still meet design intent when seasonal loads are different or lower, which can reveal issues not seen during peak or standard operation. Conducting these tests during a less-demand period helps ensure controls, sequencing, and equipment respond correctly in various conditions, supporting ongoing commissioning and long-term reliability.

Other activities are typically tied to earlier stages of the project. Verifying TAB (testing, adjusting, and balancing) is a commissioning step aimed at balancing air and water systems during construction or pre-acceptance, not a post-acceptance activity. The Cx final report is usually delivered as part of the commissioning deliverables at acceptance, documenting what was verified and signed off before occupancy. Training O&M staff is part of handover to operations and commonly occurs around turnover and acceptance rather than as a post-acceptance verification task.