Grease duct from dents/leaks during handling not protected
Treat grease/special exhaust as red-zone work: not protecting grease duct from dents/leaks during handling.
High-risk starter answer - treat grease duct, hood exhaust, kitchen exhaust, lab exhaust, and special exhaust as red-zone work. Damage that changes drainage, clearance, seal, or cleaning access needs to be called out before it gets hidden.
Ask any time grease/special exhaust involves access, weld, wrap, slope, clearance, penetration, contaminant, or support questions.
Watch out
Do not assume normal galvanized duct rules apply.
Check
Confirm whether this is grease duct, kitchen exhaust, lab exhaust, industrial exhaust, or normal exhaust.
Check the approved drawings/spec/submittal.
Look for cleanout/access, clearance, enclosure/wrap, weld/seal, slope/drainage, and inspection requirements.
Photograph dents/damage and ask whether repair or replacement is required.
Steps
Confirm the system is grease, kitchen exhaust, industrial exhaust, dust, or chemical/fume exhaust.
Check approved detail for material, access, cleanouts, joints, wrap, slope, and support.
Identify hot-work or fire-watch requirements.
Focus on the actual issue: not protecting grease duct from dents/leaks during handling.
Photograph or mark the condition if someone else needs to approve it.
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In Grease Duct, Kitchen Exhaust & Industrial Exhaust, I'm looking at: Grease duct from dents/leaks during handling not protected. What should I verify before I cut, drill, seal, cover, move, or install?