Which of the following activities is part of the commissioning construction phase?

The commissioning construction phase focuses on ensuring that systems are installed as per the design intent and are functioning correctly. Completion of prefunctional testing is a critical activity during this stage as it involves validating that all equipment and systems have been installed correctly before they are put to actual use. This testing ensures that systems meet specific criteria, which is foundational for the subsequent functional performance testing.

During the commissioning construction phase, prefunctional tests act as a preliminary check that allows issues to be addressed early in the process, creating a smoother transition to functional testing. Successful completion of prefunctional testing confirms readiness for the systems to undergo functional performance tests, where they will be evaluated under operational conditions. Hence, this choice is integral to the commissioning process and aligns perfectly with the objectives of this phase, solidifying its importance in the overall project management and system reliability.