Cleanroom Ductwork Hold Points

Cleanroom ductwork has cleanliness, leakage, filtration, pressure cascade, and material controls.

Stop if

• This is cleanroom duct. What cleanliness, sealing, and open-end protection requirements apply before we continue?

Watch out

• Do not leave duct open or drill/cut after cleaning without approved containment/re-clean.

Check

• Confirm cleanliness level, open-end protection, seal class, filtration, access, and pressure cascade intent.

Steps

• Identify whether this is normal ductwork or a controlled/special condition.
• Confirm cleanliness level, open-end protection, seal class, filtration, access, and pressure cascade intent.
• 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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