exida Recorded Webinars

Mechanical Failure Rates: Explaining the Differences

Recording Date: October 2015

This webinar first describes the distinction between failure rate prediction and estimation methods in general. It then gives details about the procedures used to obtain generic failure rates for certain mechanical equipment using FMEDA predictions and OREDA estimations along with other methods used in industry today. The results of the two methods when applied to a number of specific equipment items are compared and, when differences in the results exist between the two methods, plausible explanations for differences are provided. Equipment examples include a representative of topside equipment items and representative subsea equipment items. The relative merits of each method are discussed along with comparisons to industry databases and field studies. Finally we will discuss what is a realistic failure rate for mechanical devices and what to do if you find yourself looking at unrealistic numbers.

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About the Presenter:

Loren Stewart, CFSE

Loren Stewart Loren Stewart graduated from Virginia Tech with a BSME. She has over 10 years of professional experience. She currently works for exida consulting as a safety engineer, focusing on the mechanical aspects of their customers. Along with assessing the safety of products and creating FMEDAs and reports, she researches stiction and is creating a database for the 2H initiative according to IEC 61508.