Reoccurring Corrective Maintenance Can Indicate a Systemic Problem
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Type:  Lessons Learned

Publisher:  Oak Ridge National Laboratory, Oak Ridge, TN (ORNL)

Date: 

Topics:  Chemical Safety, Occupational Safety and Health, Maintenance, Laboratory

Failure to recognize and address the root causes behind the periodic build-up of ozone resulted in personnel being exposed to ozone above the allowable limits.

Repeated corrective maintenance to a particular system may indicate a systemic problem with the system that is not being addressed by the individual repairs performed. Individual systems or areas of mechanical operations sometimes require corrective maintenance to repair an issue, and these repairs often occur over an extended period of time. Because these repairs can occur over time, we may not recognize them as indicating a larger systemic problem. In this case, multiple repairs were performed to an ozone gas generating system, each time fixing the apparent issue.

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