Who should participate in the recommended post-installation walk-through?

• A. The owner
• B. The owner's personnel
• C. The owner and the owner's personnel
• D. The owner, the owner's personnel, and external consultants

Answer: (C)

A post-installation walk-through is about ensuring those who will operate and maintain the system are prepared to use it safely and effectively. The person who owns the system and the staff who will operate and maintain it are the natural participants because they are responsible for daily use, routine maintenance, safety procedures, and ongoing upkeep. Having the owner together with the owner's personnel ensures that training is presented to the people who will be accountable and who need to understand how the installation meets their requirements, how to perform checks, and what to do in emergencies. External consultants can be brought in for specialized commissioning or verification if needed, but they aren’t required for the standard walk-through. So, the recommended participants are the owner and the owner's personnel.