(9d) How Extreme Failure-Data Filtering Leads to Poor Process Safety
AIChE Spring Meeting and Global Congress on Process Safety
Monday, March 13, 2023 - 10:45am to 10:50am
This paper describes both appropriate and inappropriate practices of filtering field failure data (FFD) prior to using the resulting failure count from the failure data to estimate failure rates. The underlying causes of inappropriate (extreme) filtering of FFD are examined and the consequences (poor process safety) are discussed. An example is presented illustrating the benefits of using all real failures discovered in the field in the estimation of failure rates based on FFD.
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