What is the minimum distance that access panels for cleaning and inspection should be located from the exhaust or supply collar in hoods with dampers?

The minimum distance for access panels for cleaning and inspection to be located from the exhaust or supply collar in hoods with dampers is 18 inches. This requirement is outlined in the NFPA 96 Standard, which aims to ensure safe and efficient access to hoods for maintenance and cleaning. The specified distance of 18 inches is critical for several reasons.

Firstly, this spacing helps to prevent any potential obstruction or interference with the proper operation of the dampers. If access panels were positioned too close to the collars, they could impede airflow or lead to inefficient operation of the ventilation system. Secondly, placing the access panels at this minimum distance provides adequate room for personnel to safely operate and service the hoods, contributing to a safer working environment.

Furthermore, this distance is designed to facilitate thorough inspection and cleaning, which are essential for preventing fire hazards in commercial cooking operations. Regular maintenance is crucial to ensure that grease buildup is managed effectively, thereby reducing the risk of fire. In summary, the specification of 18 inches is a key safety feature that underscores the importance of proper design and maintenance protocols within the standards set by NFPA 96.