If a work area fails the visual inspection, what must be done before dust samples are collected?

If a work area fails the visual inspection, what must be done before dust samples are collected?

• A. The contractor must complete hazard controls and/or re-clean before dust samples are collected
• B. Proceed with sampling after labeling area
• C. Ignore the failure and continue
• D. Report to supervisor but no action required

Answer: (A)

When a work area fails the visual inspection, you must ensure the space is properly cleaned and any hazard controls are in place before collecting dust samples. The visual check is to confirm there’s no obvious debris, loose dust, or contamination that could bias the sampling result. If the area fails, implement the required hazard controls and perform a thorough re-cleaning (often including wet-wipe cleaning or HEPA vacuuming as appropriate) and containment as needed. Then re-check visually; only after the area passes should you proceed with dust sampling. This protects the accuracy of the samples and the safety of workers. Labeling the area or continuing after the failure would not address the potential sources of contamination, and simply reporting to a supervisor without taking action would not meet the sampling protocol.

When a work area fails the visual inspection, you must ensure the space is properly cleaned and any hazard controls are in place before collecting dust samples. The visual check is to confirm there’s no obvious debris, loose dust, or contamination that could bias the sampling result. If the area fails, implement the required hazard controls and perform a thorough re-cleaning (often including wet-wipe cleaning or HEPA vacuuming as appropriate) and containment as needed. Then re-check visually; only after the area passes should you proceed with dust sampling. This protects the accuracy of the samples and the safety of workers.

Labeling the area or continuing after the failure would not address the potential sources of contamination, and simply reporting to a supervisor without taking action would not meet the sampling protocol.