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

Author

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  • Khalifa, Mohamed
  • Khan, Faisal
  • Haddara, Mahmoud

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.

Suggested Citation

  • Khalifa, Mohamed & Khan, Faisal & Haddara, Mahmoud, 2010. "Reliability based inspection of nickel-based alloy welds in boiling water reactor environment," Reliability Engineering and System Safety, Elsevier, vol. 95(5), pages 494-498.
    • Handle: RePEc:eee:reensy:v:95:y:2010:i:5:p:494-498
    DOI: 10.1016/j.ress.2009.12.003
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