For rooftop terminations, what is the minimum required distance for a hinged up-blast fan away from any roof access?

The minimum required distance for a hinged up-blast fan away from any roof access is 40 inches. This requirement is set to ensure that there's adequate space for personnel to safely access the roof and perform maintenance or emergency procedures without the risk of being in close proximity to the exhaust plume or the fan itself.

This distance is critical because it minimizes the potential for interference with the airflow and reduces the risk of accidents that could occur from operating or maintaining the fan in a confined space. The positioning of the fan also helps to prevent the recirculation of exhaust gases back into the building, thus maintaining the safety and efficiency of the ventilation system.

Understanding the importance of this guideline highlights how it contributes to both the operational safety of the cooking equipment and the overall fire safety measures outlined in NFPA 96, ensuring compliance with industry standards.