NFPA 17A, Standard for Wet Chemical Extinguishing Systems (2021)Help ensure wet chemical fire extinguishing systems are ready to perform as intended by referencing the most current NFPA 17A requirements. Fire suppression systems and equipment play a critical role in reducing loss and protecting lives in the event of an emergency. NFPA 17A, Standard for Wet Chemical Extinguishing Systems, provides requirements for designing, installing, operating, testing, and maintaining these systems through their life cycle.