How far apart must cleanout openings be spaced in grease ducts that are inaccessible from the hood?

Cleanout openings in grease ducts that are inaccessible from the hood must be spaced 20 feet apart in order to facilitate proper maintenance and cleaning. This requirement is based on the need to ensure that grease buildup can be adequately removed to prevent fire hazards and maintain proper airflow within the duct system.

Spacing cleanouts at this interval allows for effective access along the ductwork, ensuring that any accumulated grease can be reached and cleaned by maintenance personnel. It is essential to adhere to this specification as part of the safety protocols mandated by the mechanical code, which is particularly important in commercial kitchen environments where grease-laden vapors are prevalent. This requirement supports fire safety and operational efficiency by minimizing the risk of grease fires, highlighting the importance of proper planning and adherence to the mechanical code in the design and installation of kitchen ventilation systems.