What is the primary regulatory focus of FDNY COF B28 for Flammable-Refrigerant Refrigeration Systems?

• A. To regulate carbon emissions from refrigerants.
• B. To maximize energy efficiency of refrigeration systems.
• C. To promote rapid commissioning of new systems.
• D. To ensure safety in design, operation, maintenance, and supervision of systems using flammable refrigerants and to prevent fires, explosions, and injuries.

Answer: (D)

Safety management for systems that use flammable refrigerants is the central concern. This regulation is about ensuring that the design, installation, operation, maintenance, and supervision of such systems are carried out with strict safeguards to prevent ignition, leaks, and accidental releases that could cause fires, explosions, or injuries. It emphasizes robust controls like using components and materials rated for flammable refrigerants, ensuring safe electrical installations and proper ventilation, arranging piping and shut-off measures to minimize hazard, and requiring leak detection, ventilation requirements, and trained personnel to handle and supervise the systems. While energy efficiency or rapid commissioning might be relevant in broader practice, they do not define the regulatory priority here; the main aim is to prevent hazards and protect life by effectively managing the risks associated with flammable refrigerants.