Landfill Gas Recovery Ductwork Hold Point

Landfill gas and biogas systems involve flammable/corrosive gases and special materials/controls.

Stop if

• This serves landfill/biogas air. What material, sealing, drainage, and safety controls are specified?

Watch out

• Do not use standard duct assumptions for landfill gas or biogas systems.

Check

• Confirm gas composition, material compatibility, drainage/slope, explosion controls, and AHJ/environmental requirements.

Steps

• Identify whether this is normal ductwork or a controlled/special condition.
• Confirm gas composition, material compatibility, drainage/slope, explosion controls, and AHJ/environmental requirements.
• Get the current drawing/detail/spec/submittal before changing routing, material, access, or support.
• Bring photos, location, and what you checked to the foreman before closing or covering the work.

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