Implementation of the SSHAC Guidelines for Level 3 and 4 PSHAs - Experience Gained from Actual Applications

Implementation of the SSHAC Guidelines for Level 3 and 4 PSHAs - Experience Gained from Actual Applications
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SSHAC 3 级和 4 级 PSHA 指南的实施 - 实际应用的经验

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发表时间:
2009
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通讯作者:
N. Knepprath
N. Knepprath
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文献类型:
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作者:
T. Hanks;N. Abrahamson;D. Boore;K. Coppersmith;N. Knepprath

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任何使用的贸易,产品或公司名称仅用于描述目的,并不意味着美国政府的认可。虽然本报告属于公共领域,但必须获得个人版权所有者的许可,才能复制本报告中包含的任何版权材料。1997年4月,经过四年的审议,高级地震危险性分析委员会通过美国核管理委员会发布了其报告《可能地震危险性分析的建议:关于不确定性和专家使用的指导》,编号为NUREG/CR- 6372,以下简称SSHAC(1997)。SSHAC(1997)以“SSHAC指南“的形式被非正式地称为“SSHAC指南”,它阐述了为什么以及如何在商业核电站等关键设施的概率地震危险性分析(PSHA)中使用多个专家意见以及伴随它们的内在不确定性。实施SSHAC准则和更新PSHA。“NRC有兴趣了解和记录最近在较高SSHAC级别(3和4)进行的PSHA的经验教训,并在获得新信息时从地震界获得更新PSHA的投入。这项研究的重要性增加,在预期新的应用程序的核电设施在现有和新的网站。该项目的目的不是取代2 SSHAC指南,而是用从SSHAC指南在实际应用中获得的经验来补充它们。在该项目的过程中,我们还了解到,更新现有核电设施的PSHA涉及的问题与新设施的SSHAC准则的执行问题非常不同。因此,我们在两份单独的文件中报告我们的研究结果和建议,这是第一份。编写SSHAC准则时,没有考虑将适用准则的PSHA是针对具体地点还是区域范围。迄今为止,从高水平SSHAC研究中获得的大多数经验都是针对特定地点的案例,尽管三项正在进行的研究(截至撰写本文时)是区域范围的。更新现有的PSHA将更严格地取决于特定地点和区域研究之间的差异,我们还将在配套报告中更详细地讨论这些差异。大约40名熟悉核设施危害研究的科学家和工程师参加了会议。该公司包括SSHAC(1997)的四位作者和其他四位专家,他们对本文件的贡献在...
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted material contained within this report. Introduction In April 1997, after four years of deliberations, the Senior Seismic Hazard Analysis Committee released its report " Recommendations for Probabilistic Seismic Hazard Analysis: Guidance on Uncertainty and Use of Experts " through the U.S. Nuclear Regulatory Commission as NUREG/CR– 6372, hereafter SSHAC (1997). Known informally ever since as the " SSHAC Guidelines, " SSHAC (1997) addresses why and how multiple expert opinions–and the intrinsic uncertainties that attend them–should be used in Probabilistic Seismic Hazard Analyses (PSHA) for critical facilities such as commercial nuclear power plants. Implementation of the SSHAC Guidelines and for Updating PSHAs. " The NRC was interested in understanding and documenting lessons learned from recent PSHAs conducted at the higher SSHAC Levels (3 and 4) and in gaining input from the seismic community for updating PSHAs as new information became available. This study increased in importance in anticipation of new applications for nuclear power facilities at both existing and new sites. The intent of this project was not to replace 2 the SSHAC Guidelines but to supplement them with the experience gained from putting the SSHAC Guidelines to work in practical applications. During the course of this project, we also learned that updating PSHAs for existing nuclear power facilities involves very different issues from the implementation of the SSHAC Guidelines for new facilities. As such, we report our findings and recommendations from this study in two separate documents, this being the first. The SSHAC Guidelines were written without regard to whether the PSHAs to which they would be applied were site-specific or regional in scope. Most of the experience gained to date from high-level SSHAC studies has been for site-specific cases, although three ongoing (as of this writing) studies are regional in scope. Updating existing PSHAs will depend more critically on the differences between site-specific and regional studies, and we will also address these differences in more detail in the companion report. attended by approximately 40 scientists and engineers familiar with hazard studies for nuclear facilities. This company included four of the authors of SSHAC (1997) and four other experts whose contributions to this document are mentioned in …