To ensure that sprinkler systems perform properly during a fire, which requirement applies?

• A. Maintenance, periodic inspection in accordance with NFPA 72.
• B. Periodic inspection, testing in accordance with NFPA 10.
• C. NFPA 17, testing, and maintenance procedures.
• D. Periodic inspection, testing, and maintenance in accordance with NFPA 25.

Answer: (D)

Regular inspection, testing, and maintenance of water-based sprinkler systems are essential to ensure they will perform during a fire. NFPA 25 provides the specific requirements for how often and in what ways these systems must be checked, tested, and serviced. Following this standard keeps components like valves, gauges, water supply, backflow devices, alarms, and the piping in proper working order and verifies that the system can deliver the intended water flow and pressure when needed. Regular activities—interval-based inspections, functional tests, and targeted maintenance—help catch corrosion, leakage, obstructions, or faulty alarms before a fire occurs. Other standards cover different equipment (fire alarms, portable extinguishers, or other suppression types) and do not provide the complete maintenance framework for sprinklers, so NFPA 25 is the correct reference for ensuring sprinkler readiness.