2025 NFPA 12 Standard on Carbon Dioxide Extinguishing Systems

NFPA 12, Standard on Carbon Dioxide Extinguishing Systems 2025 edition establishes mandatory requirements for the design, installation, testing, inspection, and maintenance of carbon dioxide extinguishing systems across their full range of applications. Coverage spans total flooding systems, local application systems, hand hose line systems, standpipe systems, and mobile supplies for industrial and marine fire protection environments. Both high-pressure and low-pressure CO2 system configurations are addressed, and the standard is updated to align with code references in NFPA 4, Standard for Integrated Fire Protection and Life Safety System Testing.

Who Uses NFPA 12

Required by fire protection engineers, suppression system designers and installers, AHJ officials, facility managers, and inspectors responsible for the design, installation, acceptance testing, and ongoing maintenance of CO2 extinguishing systems in industrial, marine, and special hazard applications.

What's New in the 2025 Edition

• New table for extended discharge for enclosed recirculating, rotating electrical equipment.
• Added provisions to assist users in calculating discharge times for values not covered by existing tables in the document.

Stay compliant with the carbon dioxide extinguishing system requirements in effect for your application and jurisdiction.

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