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Scoring Process for Evaluating Laboratory PWSCC Crack Growth Rate Data of Thick-Wall Alloy 690 Wrought Material and Alloy 52, 152, and Variant Weld Material

  • Amanda R. JenksEmail author
  • Glenn A. White
  • Paul Crooker
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

Due to the widespread use of thick-wall Alloy 690 and its corresponding weld metals Alloys 52 and 152 in various replacement, repair, mitigation, and new plant pressurized water reactor (PWR) applications, there is an industry need for an equation or methodology to predict crack growth rates (CGRs) for primary water stress corrosion cracking (PWSCC) of these materials. An international PWSCC CGR Expert Panel was organized by EPRI, with the participation of national laboratories sponsored by the US NRC, to support the development of such PWSCC CGR equations. A database of over 500 Alloy 690 CGR data points and over 130 Alloy 52/152 CGR data points from seven research laboratories was compiled, evaluated and scored for data quality, and assessed to determine the effects of numerous parameters such as temperature, crack-tip stress intensity factor, yield strength, and crack orientation. The process by which these data were evaluated and scored is presented in this paper.

Keywords

PWSCC Crack growth rate Expert panel Alloy 690 

Notes

Acknowledgements

The authors would like to acknowledge the members of the Data Evaluation Subgroup of the Expert Panel, which developed and applied the scoring procedure discussed in this paper, in addition to providing most of the CGR data. In particular, thanks goes out to Peter Andresen (GE-GRC, now retired), Bogdan Alexandreanu (ANL), Stuart Medway (Amec Foster Wheeler), F.J. Perosanz and Lola Gomez-Briceño (CIEMAT), Denise Paraventi (Bettis, now NNL), and Mychailo Toloczko (PNNL).

References

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Amanda R. Jenks
    • 1
    Email author
  • Glenn A. White
    • 1
  • Paul Crooker
    • 2
  1. 1.Dominion Engineering, Inc.RestonUSA
  2. 2.Electric Power Research InstitutePalo AltoUSA

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