Which NFPA standard covers the installation of private fire service mains and their appurtenances?

• A. NFPA 30
• B. NFPA 16
• C. NFPA 14
• D. NFPA 24

Answer: (D)

Private fire service mains and their appurtenances are governed by NFPA 24. This standard specifies how the piping from the public water supply to the building’s fire protection system should be installed, including materials, sizing, installation practices, backflow prevention, valve placement, and the required testing and maintenance. It covers the private main network and its appurtenances to ensure a reliable, properly protected water supply for the system.

NFPA 14, by contrast, addresses the installation of standpipes and hose systems inside the building, which is a different part of the fire protection setup. The other codes cover unrelated topics like flammable liquids (NFPA 30) or other suppression system types (NFPA 16). So NFPA 24 is the correct standard for private mains and their appurtenances.