Which NFPA standard governs water tanks for private fire protection?

• A. NFPA 30
• B. NFPA 24
• C. NFPA 22
• D. NFPA 15

Answer: (C)

The key idea here is that water storage for private fire protection is addressed by a standard that specifically covers tanks. NFPA 22 lays out the requirements for design, construction, installation, testing, and maintenance of water tanks used to supply private fire protection systems. It ensures the tank has the right capacity to meet the system’s demand, uses acceptable materials and coatings, provides proper venting and access for inspection, and specifies hydrostatic testing and ongoing maintenance practices so the tank remains reliable during a fire event. Other standards deal with related parts of the system but not the tanks themselves—for example, private fire service mains and their appurtenances are covered by NFPA 24, while NFPA 30 concerns flammable liquids and NFPA 15 covers water spray systems.