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Title: Validation of k eff Calculations for Extended BWR Burnup Credit

Abstract

The US Nuclear Regulatory Commission and consensus standards recommend validation of the numerical methods used in criticality safety analyses. This validation requires the comparison of computational results with measurements of physical systems which are neutronically similar to those used in the safety analysis being performed. To this end, this document examines the methods available to generate sensitivity data to help identify systems similar to spent boiling- water reactor (BWR) fuel in a flooded spent nuclear fuel transportation or storage cask. A large number of critical benchmark experiments are surveyed using sensitivity/uncertainty (S/U) techniques to assess their applicability to BWR burnup credit (BUC) beyond the burnup of peak reactivity. Multiple burnups of BWR assemblies are considered herein, as well as the actinide-only (AO) and actinide-and-major-fission-product (AFP) isotope sets. Sample validations are completed for representative application models to demonstrate that appropriate validation is possible and to indicate the bias and bias uncertainty values expected for related applications.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1492185
Report Number(s):
ORNL/TM-2018/797
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES

Citation Formats

Marshall, William J., Clarity, Justin B., and Bowman, Stephen M. Validation of keff Calculations for Extended BWR Burnup Credit. United States: N. p., 2018. Web. doi:10.2172/1492185.
Marshall, William J., Clarity, Justin B., & Bowman, Stephen M. Validation of keff Calculations for Extended BWR Burnup Credit. United States. doi:10.2172/1492185.
Marshall, William J., Clarity, Justin B., and Bowman, Stephen M. Sat . "Validation of keff Calculations for Extended BWR Burnup Credit". United States. doi:10.2172/1492185. https://www.osti.gov/servlets/purl/1492185.
@article{osti_1492185,
title = {Validation of keff Calculations for Extended BWR Burnup Credit},
author = {Marshall, William J. and Clarity, Justin B. and Bowman, Stephen M.},
abstractNote = {The US Nuclear Regulatory Commission and consensus standards recommend validation of the numerical methods used in criticality safety analyses. This validation requires the comparison of computational results with measurements of physical systems which are neutronically similar to those used in the safety analysis being performed. To this end, this document examines the methods available to generate sensitivity data to help identify systems similar to spent boiling- water reactor (BWR) fuel in a flooded spent nuclear fuel transportation or storage cask. A large number of critical benchmark experiments are surveyed using sensitivity/uncertainty (S/U) techniques to assess their applicability to BWR burnup credit (BUC) beyond the burnup of peak reactivity. Multiple burnups of BWR assemblies are considered herein, as well as the actinide-only (AO) and actinide-and-major-fission-product (AFP) isotope sets. Sample validations are completed for representative application models to demonstrate that appropriate validation is possible and to indicate the bias and bias uncertainty values expected for related applications.},
doi = {10.2172/1492185},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {12}
}

Technical Report:

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