During the ESS commissioning process, which activity involves confirming that all components function correctly after installation?

• A. Planning
• B. Verification
• C. Documentation
• D. Disconnection

Answer: (B)

Verification is the step where you confirm that every installed component functions correctly as part of the overall ESS system, and that the integrated operation matches the design intent. In the commissioning process, you power up the system and perform functional tests on each device, verify control sequences run in the proper order, ensure interlocks prevent unsafe conditions, and check that alarms and shutdowns trigger as required. This live validation demonstrates that installation not only places components correctly but that they work together safely and reliably. Planning sets up what will be tested and how, documentation records the results, and disconnection refers to removing or isolating equipment—not to confirming proper function after installation.