Which NFPA edition and section addresses refilling halocarbon extinguishing agents when agent loss exceeds 5%?

• A. NFPA 2001 2018 Section 8.3.2
• B. NFPA 2001 2012 Section 8.3.2
• C. NFPA 12 Section 5.4
• D. NFPA 70 Section 21.2.4

Answer: (A)

When a halocarbon extinguishing system loses agent, maintaining the design concentration is essential for effectiveness. If the loss exceeds 5%, the system must be refilled to restore the correct level. The 2018 edition of NFPA 2001, in Section 8.3.2, directly specifies how to refilling or replenishing halocarbon extinguishing agents when agent loss goes beyond 5%. It covers that recharge should be performed by qualified personnel following manufacturer guidelines and verified after replenishment to ensure the system is back to its intended concentration. This exact reference is what addresses the scenario described. The other standards don’t apply here: NFPA 12 concerns CO2 extinguishing systems, and NFPA 70 is the National Electrical Code, not related to halocarbon recharge requirements.