At least semiannually, what shall be checked on refillable containers?

• A. Temperature checks only
• B. The agent quantity and pressure
• C. Visual inspection only
• D. Weight measurement only

Answer: (B)

Regular maintenance of refillable clean agent containers focuses on knowing how much agent remains and ensuring the container is at the correct pressure. At least every six months, technicians weigh the container to determine the agent quantity and check the internal pressure to confirm it is within the specified range. This combination ensures the vessel will discharge properly when needed and that there aren’t leaks or over/under filling compromising performance. Temperature checks or visual inspection alone can miss either the actual amount of agent or the pressure condition, and weighing without verifying pressure won’t guarantee proper discharge.