Grease Duct, Kitchen & Industrial Exhaust

A grease duct elbow has no cleanout access

A smoke exhaust jet fan is too close to combustible framing

Abrasive dust duct requires heavier construction but not recognized

Abrasive dust duct requires heavier construction but not recognized

Access door installed where it cannot be serviced

Access door installed where it cannot be serviced

Access panel blocked after ceiling/wall close-up

Access panel blocked after ceiling/wall close-up

Animal Research Exhaust Hold Point

Animal Research Exhaust Hold Point

Apprentice treats high-risk exhaust as normal duct

Bakery Equipment Changed After the Exhaust Duct Was Fabricated

Bakery Equipment Changed After the Exhaust Duct Was Fabricated

Battery Manufacturing Exhaust and Corrosion Hold Point

Battery Manufacturing Exhaust and Corrosion Hold Point

Black-Iron Duct Basics Before Fabrication or Install

Black-Iron Duct Basics Before Fabrication or Install

Can galvanized duct be used on lab fume hood exhaust?

Can standard spiral duct be used for commercial kitchen grease exhaust?

Checking hood connection dimensions before installing grease duct

Checking if cleanout spacing is required

Checking roof penetration/curb detail

Chemical Plant Exhaust Material Hold Point

Chemical Plant Exhaust Material Hold Point

Cleanout spacing is required not checked

Cleanout spacing not coordinated before install

Cleanout spacing not coordinated before install

Cleanout/access requirements

Clearance to combustibles not verified

Clearance to combustibles not verified

Condensate/chemical exhaust slope or drain missed

Condensate/chemical exhaust slope or drain missed

Coordinating kitchen hood connection with hood installer

Customer-Area Floor and Refrigerated Cases Are Not Protected

Cutting into grease duct without approval

Cutting or Drilling Duct Above Operating Food Displays

Deli or Bakery Exhaust Is Being Treated Like Ordinary Exhaust

Deli or Bakery Exhaust Is Being Treated Like Ordinary Exhaust

Does a grease duct elbow need a cleanout access door?

Ductwork in Battery Rooms

Ductwork in Battery Rooms

Ductwork in Breweries and Distilleries

Ductwork in Breweries and Distilleries

Ductwork in Chemical Plants

Ductwork in Chemical Plants

Ductwork in Corrosive Environments

Ductwork in Corrosive Environments

Ductwork in Food Processing Facilities

Ductwork in Food Processing Facilities

Ductwork in Generator Rooms

Ductwork in Generator Rooms

Ductwork in Kitchens with Makeup Air

Ductwork in Kitchens with Makeup Air

Ductwork in Laboratories with Fume Hoods

Ductwork in Laboratories with Fume Hoods

Ductwork in Parking Garages

Ductwork in Parking Garages

Ductwork in Swimming Pool Natatoriums

Ductwork in Swimming Pool Natatoriums

Ductwork in Waste Water Treatment Plants

Ductwork in Waste Water Treatment Plants

Escalating when grease/industrial detail is missing

Existing Duct Cannot Be Positively Identified Before Remodel Demolition

Fabricating kitchen exhaust grease duct without slope toward the grease trap

Failing to double-hem raw edges on kitchen exhaust hoods for rigidity

Fan connection/flex connector requirements not verified

Fire wrap/shaft detail misunderstood

Fire wrap/shaft detail misunderstood

Grease Duct Cleanout Location and Spacing

Grease Duct Cleanout Location and Spacing

Grease Duct Weld Inspection Criteria

Grease Duct Weld Inspection Criteria

Grease duct access panel facing inaccessible side

Grease duct access panel facing inaccessible side

Grease duct from dents/leaks during handling not protected

Grease duct is being hung level and may need slope

Grease duct routed through space without checking code/spec

Grease duct routed through space without checking code/spec

Grease duct versus regular exhaust duct not recognized

Grease duct wrap is too close to combustibles or installed wrong

Grease-Duct Cleanouts: Verify Access Before the Route Is Final

Grease-Duct Cleanouts: Verify Access Before the Route Is Final

Grease-Duct Clearance and Wrap Coordination

Grease-Duct Clearance and Wrap Coordination

High-risk exhaust as normal duct treated incorrectly

Hood connection dimensions before installing grease duct not checked

Hood, Grease Duct, and Make-Up-Air Connections Do Not Align

Hood, Grease Duct, and Make-Up-Air Connections Do Not Align

Hot Work Hold Point for Welding or Cutting Duct

Hot Work Hold Point for Welding or Cutting Duct

Hydrogen Room Ventilation Hold Point

Hydrogen Room Ventilation Hold Point

Industrial exhaust hanger conflicts with maintenance path

Industrial exhaust hanger conflicts with maintenance path

Industrial exhaust material not matched to contaminant

Industrial exhaust material not matched to contaminant

Into grease duct without approval

Kitchen hood connection with hood installer not coordinated

Laboratory Biosafety Cabinet Exhaust Coordination

Laboratory Biosafety Cabinet Exhaust Coordination

Laboratory Exhaust Duct Material

Laboratory Exhaust Duct Material

Landfill Gas Recovery Ductwork Hold Point

Landfill Gas Recovery Ductwork Hold Point

Missing cleanout/access requirements

Night Tie-In Cannot Be Completed Inside the Shutdown Window

Night-Shift Handoff Leaves Open Duct or Unfinished Protection

Non-approved sealant/tape on grease duct

Normal mastic on grease duct

Not escalating when grease/industrial detail is missing

Overnight Tie-In Was Connected but Airflow and Controls Were Not Verified

Protecting grease duct from dents/leaks during handling

Recognizing grease duct versus regular exhaust duct

Roof penetration/curb detail not checked

Slope direction wrong on horizontal grease duct

Slope direction wrong on horizontal grease duct

Slope/drainage on kitchen exhaust

Standard spiral lockseam pipe is used on grease exhaust

Support/hanger not rated for grease duct weight/system

Support/hanger not rated for grease duct weight/system

Transition/fitting creates grease trap point

Using non-approved sealant/tape on grease duct

Using normal mastic on grease duct

Verifying fan connection/flex connector requirements

Verifying welded/flanged/listed system requirements

Welded duct heat/fire watch expectations unclear

Welded duct heat/fire watch expectations unclear

Welded grease duct is bowing or binding when it heats up

Welded/flanged/listed system requirements not verified

What do I do if galvanized duct is being connected to a corrosive lab fume hood?

What should I check before grease duct fire wrap gets covered?

Why can't commercial kitchen grease duct just be hung level?

Why is a welded grease duct bowing when it heats up?

Wrong slope/drainage on kitchen exhaust

Wrong transition/fitting creates grease trap point