Which procedure is typically used to assess containment integrity before clearance sampling, as described in the referenced standards?

Which procedure is typically used to assess containment integrity before clearance sampling, as described in the referenced standards?

• A. Monometer reading
• B. Visual inspection by project monitor prior to clearance air sampling
• C. Transmission Electron Microscopy
• D. Bulk sampling

Answer: (B)

Assessing containment integrity before clearance sampling relies on confirming the containment is visibly intact and properly configured so that any air samples collected reflect the actual cleaned space. The standard approach is for the project monitor to perform a visual inspection of the containment setup before proceeding with clearance air sampling. This on-site check looks for torn or mis-sealed plastic sheeting, gaps around penetrations, doors and vents that aren’t properly sealed, functioning negative-pressure equipment, and proper decontamination facilities, along with good housekeeping. If any issues are found, they are addressed before sampling so the clearance results are valid and worker safety is maintained. Monometer readings can support containment performance by verifying negative pressure, but the requirements emphasize the visual inspection as the predefined pre-sampling check. Bulk sampling and Transmission Electron Microscopy serve different purposes: bulk sampling identifies asbestos-containing materials, and TEM analyzes fiber content in samples, not the readiness of containment for clearance sampling.

Assessing containment integrity before clearance sampling relies on confirming the containment is visibly intact and properly configured so that any air samples collected reflect the actual cleaned space. The standard approach is for the project monitor to perform a visual inspection of the containment setup before proceeding with clearance air sampling. This on-site check looks for torn or mis-sealed plastic sheeting, gaps around penetrations, doors and vents that aren’t properly sealed, functioning negative-pressure equipment, and proper decontamination facilities, along with good housekeeping. If any issues are found, they are addressed before sampling so the clearance results are valid and worker safety is maintained.

Monometer readings can support containment performance by verifying negative pressure, but the requirements emphasize the visual inspection as the predefined pre-sampling check. Bulk sampling and Transmission Electron Microscopy serve different purposes: bulk sampling identifies asbestos-containing materials, and TEM analyzes fiber content in samples, not the readiness of containment for clearance sampling.