Sensitivity analysis of reactor safety parameters with automated adjoint function generation
- Paul Scherrer Inst., Villigen (Switzerland)
- Oak Ridge National Lab., TN (United States)
A project at the Paul Scherrer Institute (PSI) involves the development of simulation models for the transient analysis of the reactors in Switzerland (STARS). This project, funded in part by the Swiss Federal Nuclear Safety Inspectorate, also involves the calculation and evaluation of certain transients for Swiss light water reactors (LWRs). For best-estimate analyses, a key element in quantifying reactor safety margins is uncertainty evaluation to determine the uncertainty in calculated integral values (responses) caused by modeling, calculational methodology, and input data (parameters). The work reported in this paper is a joint PSI/Oak Ridge National Laboratory (ORNL) application to a core transient analysis code of an ORNL software system for automated sensitivity analysis. The Gradient-Enhanced Software System (GRESS) is a software package that can in principle enhance any code so that it can calculate the sensitivity (derivative) to input parameters of any integral value (response) calculated in the original code. The studies reported are the first application of the GRESS capability to core neutronics and safety codes.
- OSTI ID:
- 7044100
- Report Number(s):
- CONF-920606--
- Journal Information:
- Transactions of the American Nuclear Society; (United States), Journal Name: Transactions of the American Nuclear Society; (United States) Vol. 65; ISSN TANSA; ISSN 0003-018X
- Country of Publication:
- United States
- Language:
- English
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220900* -- Nuclear Reactor Technology-- Reactor Safety
A CODES
ACCURACY
BWR TYPE REACTORS
C CODES
CALCULATION METHODS
COMPUTER CODES
COORDINATED RESEARCH PROGRAMS
CROSS SECTIONS
DEVELOPED COUNTRIES
ENRICHED URANIUM REACTORS
EUROPE
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MULTIPLICATION FACTORS
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ONE-DIMENSIONAL CALCULATIONS
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REACTOR COMPONENTS
REACTOR CORES
REACTOR PHYSICS
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RESEARCH PROGRAMS
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SENSITIVITY ANALYSIS
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TRANSIENTS
TRANSPORT THEORY
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US DOE
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WATER MODERATED REACTORS