Before Touching Grease Duct

Use before cutting, welding, wrapping, accessing, sealing, or modifying kitchen exhaust/grease duct.

You are working on kitchen exhaust, grease duct, hood exhaust, welded duct, fire wrap, cleanouts, or access doors.

Stop if

• Always ask when grease duct work involves access, welds, wrap, slope, penetrations, offsets, clearances, or coordination conflicts.

Watch out

• Do not treat grease duct like normal exhaust duct.
• Do not bury cleanout/access.
• Do not cut/weld/grind without hot-work control and approval.
• Do not guess on fire wrap, clearance, weld, slope, or access details.

Check

• Duct label/system
• Joint/access detail
• Conflict/access issue
• Approved detail if available

Steps

• Treat grease duct as red-zone work. Identify, document, and ask before modifying.
• Confirm it is grease/kitchen exhaust or another high-risk exhaust system.
• Check approved detail for material, joint type, slope, access doors, welding/wrap, and clearance.
• Identify access/cleanout requirements before anything gets covered.
• Check whether hot work permit/fire watch is required for cutting/welding/grinding.
• Take photos of route, joints, access, labels, and conflicts.
• Ask the foreman before cutting, welding, wrapping, moving, or sealing.

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