Which body harmonizes NFPA 72 and life-safety codes to ensure comprehensive safety when both apply?

• A. AHJs coordinate to harmonize NFPA 72 and life-safety codes.
• B. Code harmonization is handled by manufacturers.
• C. Code harmonization is done by building owners.
• D. Only fire departments handle harmonization.

Answer: (B)

When both NFPA 72 and life-safety codes apply, the practical harmonization happens through manufacturers. They design fire alarm components and systems to meet NFPA 72’s performance and testing requirements while also aligning with the life-safety provisions found in related codes. By obtaining third‑party listings and certifications (such as UL or ETL) that demonstrate compliance with both sets of standards, manufacturers provide a single, compatible package that can be installed in various jurisdictions without conflicting requirements. This alignment of product design, labeling, and documentation is what allows different codes to work together in real installations. Authorities having jurisdiction enforce and interpret these requirements, and building owners are responsible for proper installation and ongoing maintenance, but the actual cross-code harmonization is driven by the manufacturers' compliance and listing processes.