Which NFPA publication provides guidelines for fire flow testing and marking of hydrants?

• A. NFPA 291
• B. NFPA 13
• C. NFPA 25
• D. NFPA 70

Answer: (A)

NFPA 291 focuses on fire flow testing and hydrant marking. It provides the recommended procedures for conducting fire flow tests, collecting data on water supply performance, and documenting or marking hydrants with flow information and other hydraulic characteristics to aid firefighting operations. The other NFPA standards serve different purposes: NFPA 13 governs the design and installation of sprinkler systems, NFPA 25 covers inspection, testing, and maintenance of water-based fire protection systems, and NFPA 70 is the National Electrical Code. Because the scenario specifically asks for guidelines on how to test fire flow and how hydrants should be marked with relevant data, NFPA 291 is the appropriate publication.