According to NFPA 13, how often should the maintenance of valves be performed?

The correct answer is based on the guidance provided in NFPA 13, which establishes that the maintenance of valves is essential to ensure that sprinkler systems operate effectively in the event of a fire. The standard stipulates that maintenance should be conducted at least annually or more frequently if required by specific conditions such as changes in use, environmental conditions, or local regulations. This regular maintenance is critical for testing the operation of valves, ensuring they are not obstructed, and verifying that the system remains in good working order.

Understanding the reason behind regular maintenance helps prevent potential failures during a fire emergency, as improperly maintained valves could lead to system inefficiencies or a complete lack of response when needed most. Therefore, adhering to the standard increases the reliability and effectiveness of fire protection systems.