Reliability based inspection of nickel-based alloy welds in boiling water reactor environment

Mohamed Khalifa, Faisal Khan and Mahmoud Haddara

Reliability Engineering and System Safety, 2010, vol. 95, issue 5, 494-498

Abstract: Stress corrosion cracking (SCC) problems are routinely observed in boiling water reactor (BWR) units. Nickel-based alloy welds are commonly used in BWR units; the nickel content of the material improves resistance to stress corrosion cracking. However, stress corrosion cracking is still a problem for these welds. When a crack is detected, a decision whether an immediate repair in needed has to be made. A model for estimating reliability of BWR nickel-based alloys welds subjected to SCC using non-destructive inspection techniques is introduced. The proposed methodology and model has been illustrated through a numerical example to estimate the required re-inspection interval in order to keep the target reliability level.

Keywords: Reliability based inspection; Stress corrosion cracking (SCC); Probability of detection function; Non-destructive inspection; Nickel-based alloys welds (search for similar items in EconPapers)
Date: 2010
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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:95:y:2010:i:5:p:494-498

DOI: 10.1016/j.ress.2009.12.003

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