Which term describes construction that does not permit the passage of any grease under normal cooking conditions?

• A. Grease Tight
• B. Greaseproof
• C. Oil Tight
• D. Spill Tight

Answer: (A)

Grease-tight describes construction that does not permit grease to pass through joints or assemblies under normal cooking conditions. This idea is crucial in kitchen fire protection because grease can condense and migrate through openings, potentially spreading flames or fueling a fire. Achieving grease-tightness involves using sealed joints, tight closures, and materials with low grease permeability, so grease stays contained within the hood, duct, or enclosure. The other terms don’t capture that specific protection: greaseproof is more about resistance to grease in fabrics or packaging, oil-tight targets oil rather than kitchen grease, and spill-tight is about liquid spills rather than grease migration in cooking environments.