Environmental creep-fatigue and weld creep cracking: a summary of design and fitness-for-service practices

Technical Report · Wed Jan 01 04:00:00 EST 2020

DOI:https://doi.org/10.2172/1887860· OSTI ID:1887860

Messner, M. C. ^[1]; Barua, B. ^[1]; Rovinelli, A. ^[1]; Sham, T. -L. ^[1]

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1. Argonne National Lab. (ANL), Argonne, IL (United States)

This report surveys current creep-fatigue design and fitness-for-service assessment procedures, with a particular focus on environmental effects and creep-fatigue cracking near weldments. Included in this assessment are the American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section III, Division 5, the British R5 standard, the French RCC-MRx design code, the ITER Structural Design Criteria, and the API-579/ASME FFS-1 fitness-for-service rules for petrochemical components. The focus of this review is to identify gaps in the available methods that could prevent regulators from evaluating future high temperature reactor designs. The report makes recommendations, where appropriate, on actions that could be taken to fill these gaps by either providing adequate assessment procedures for creep-fatigue damage in harsh environments or by evaluating strategies vendors could use to mitigate regulatory concerns with creep-fatigue damage in high temperature reactor components.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: US Nuclear Regulatory Commission (NRC), Office of Nuclear Regulatory Research
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1887860
• Report Number(s): ANL-19/13; 151507
• Country of Publication: United States
• Language: English

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