Decision criteria for updating test intervals for well barriers

Alireza M. Gelyani, Jon Tømmerås Selvik and Eirik Bjorheim Abrahamsen

Journal of Risk Research, 2016, vol. 19, issue 3, 305-315

Abstract: In this paper, we discuss whether or not the decision-making process regarding test intervals for well barriers should adopt the same decision criteria as those recently suggested for safety instrumented systems (SIS). We conclude that the criterion suggested for halving the test intervals for SIS is also appropriate to use for well barriers. The criterion for doubling the test interval for SIS is, however, not considered appropriate, as it does not give sufficient weight to the uncertainties. A new type of criterion for doubling the test interval for well barriers that better reflects the uncertainties is suggested.

Date: 2016
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DOI: 10.1080/13669877.2014.961521

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