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This content will become publicly available on August 23, 2018

Title: Assessing the need for an update of a probabilistic seismic hazard analysis using a SSHAC Level 1 study and the Seismic Hazard Periodic Reevaluation Methodology

A key decision for nuclear facilities is evaluating the need for an update of an existing seismic hazard analysis in light of new data and information that has become available since the time that the analysis was completed. We introduce the newly developed risk-informed Seismic Hazard Periodic Review Methodology (referred to as the SHPRM) and present how a Senior Seismic Hazard Analysis Committee (SSHAC) Level 1 probabilistic seismic hazard analysis (PSHA) was performed in an implementation of this new methodology. The SHPRM offers a defensible and documented approach that considers both the changes in seismic hazard and engineering-based risk information of an existing nuclear facility to assess the need for an update of an existing PSHA. The SHPRM has seven evaluation criteria that are employed at specific analysis, decision, and comparison points which are applied to seismic design categories established for nuclear facilities in United States. The SHPRM is implemented using a SSHAC Level 1 study performed for the Idaho National Laboratory, USA. The implementation focuses on the first six of the seven evaluation criteria of the SHPRM which are all provided from the SSHAC Level 1 PSHA. Finally, to illustrate outcomes of the SHPRM that do not lead tomore » the need for an update and those that do, the example implementations of the SHPRM are performed for nuclear facilities that have target performance goals expressed as the mean annual frequency of unacceptable performance at 1x10 -4, 4x10 -5 and 1x10 -5.« less
 [1] ;  [2] ;  [2] ;  [3] ;  [3] ;  [4] ;  [5]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  2. Coppersmith Consulting, Inc., Walnut Creek, CA (United States)
  3. AMEC Foster Wheeler, Oakland, CA (United States)
  4. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States). Civil and Environmental Engineering Dept.
  5. Pacific Engineering and Analysis, El Cerrito, CA (United States)
Publication Date:
Report Number(s):
Journal ID: ISSN 0029-5493; PII: S0029549317303837
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Nuclear Engineering and Design
Additional Journal Information:
Journal Volume: 323; Journal Issue: C; Journal ID: ISSN 0029-5493
Research Org:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org:
USDOE Office of Nuclear Energy (NE)
Country of Publication:
United States
58 GEOSCIENCES; Earthquake; Nuclear Facility; Seismic Design; Seismic Hazard Analysis
OSTI Identifier: