What is prohibited in grease ducts according to the maintenance guidelines?

The prohibition of openings in grease ducts is rooted in the need to maintain a safe and functional exhaust system in commercial kitchens and similar environments. Grease ducts are designed to safely transport heat and flammable vapors away from cooking equipment, and having openings can introduce various risks.

Openings can allow the escape of flammable grease particles and vapors, potentially leading to fire hazards. Furthermore, they make it easier for grease to accumulate outside the duct system, which can also pose a fire risk and facilitate contamination of the surrounding area. By prohibiting openings, the guidelines ensure that grease ducts remain sealed, reducing both the likelihood of fire and the potential for cleaning challenges.

In contrast, access panels, inspection ports, and cleanout doors serve specific maintenance purposes, allowing for necessary cleaning and inspection of the ductwork while minimizing the risk of grease buildup and ensuring compliance with safety standards. These components are essential for maintaining efficient function while the prohibition of openings helps to uphold the integrity and safety of the grease duct system.