Potential roles for the Master Curve in regulatory application |
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| Affiliation: | 1. Hubei Nuclear Solid Physics Key Laboratory, Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China;2. Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu 610041, China;3. Interdisciplinary Materials Research Center, Institute for Advanced Study, Chengdu University, Chengdu 610106, China;4. School of Mathematics and Physics, Hebei University of Engineering, Handan, Hebei 056038, China;5. Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China;6. Center for Lunar and Planetary Sciences, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 266071, China |
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| Abstract: | The Master Curve, as introduced by Wallin and co-workers in 1984, has evolved into a mature technology for characterizing the fracture toughness transition of ferritic steels. Considerable empirical evidence provides testament to the robustness of the Master Curve procedure. However, in 1997, the Nuclear Regulatory Commission (NRC) staff detailed several technical issues requiring resolution prior to staff acceptance of applications of Master Curve technology to the fracture integrity assessment of nuclear reactor pressure vessels (RPVs) 1]. Current and recently completed research programs sponsored by both the NRC and Electric Power Research Institute (EPRI) focus on closure of these issues. This paper reviews the issues detailed in 1997, comments on their continued relevance in light of recent research results, and details areas where either additional research or a change or research focus is warranted. |
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