Underwater inspection of storage facilities by divers or submersible equipment should follow which standard?

• A. ANSI / AWWA Standard C652
• B. OSHA 29 CFR 1910
• C. API 570
• D. CSA B-100

Answer: (A)

This question tests which standard governs procedures for inspecting water storage tanks when divers or submersible equipment are used. ANSI / AWWA Standard C652 is the reference, as it covers cleaning, disinfection, and inspection of water-storage tanks, including the safety and operational steps needed when entry into a tank is required. It provides guidance on isolating the tank, preparing for entry, and conducting inspection and cleaning to ensure the tank is safe and sanitary before it’s placed back in service.

The other options don’t fit this specific scenario: OSHA 29 CFR 1910 focuses on general workplace safety and health rather than tank-specific underwater inspection procedures; API 570 is about piping inspection in the oil and gas industry and isn’t applicable to water storage facilities; CSA B-100 is a Canadian standard that isn’t the standard typically used for U.S. water utility underwater inspection practices.