How often does NFPA 1911 require an MWS apparatus equipped with a fire pump to be service tested?

NFPA 1911 specifies that a Mobile Water Supply (MWS) apparatus equipped with a fire pump must undergo service testing at least once a year or after extensive repairs. This requirement is critical to ensure that the fire pump and associated systems are functioning correctly and effectively, which is essential for reliable fire suppression efforts.

Regular testing helps identify any mechanical issues, wear, or performance deficiencies that could impede the apparatus's operation in an emergency. By adhering to this guideline, fire departments can ensure their equipment is ready and reliable, thereby enhancing safety for both firefighters and the communities they serve. The provision for testing after extensive repairs also underscores the importance of verifying the integrity and functionality of systems that might have been altered or impacted during maintenance work.