Uncertainty and Sensitivity Analyses of a Pebble Bed HTGR Loss of Cooling Event
Author
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-01-14
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
The Very High Temperature Reactor Methods Development group at the Idaho National Laboratory identified the need for a defensible and systematic uncertainty and sensitivity approach in 2009.
This paper summarizes the results of an uncertainty and sensitivity quantification investigation performed with the SUSA code, utilizing the International Atomic Energy Agency CRP 5 Pebble Bed Modular Reactor benchmark and the INL code suite PEBBED-THERMIX.
Eight model input parameters were selected for inclusion in this study, and after the input parameters variations and probability density functions were specified, a total of 800 steady state and depressurized loss of forced cooling (DLOFC) transient PEBBED-THERMIX calculations were performed.
The six data sets were statistically analyzed to determine the 5% and 95% DLOFC peak fuel temperature tolerance intervals with 95% confidence levels.
It was found that the uncertainties in the decay heat and graphite thermal conductivities were the most significant contributors to the propagated DLOFC peak fuel temperature uncertainty.
No significant differences were observed between the results of Simple Random Sampling (SRS) or Latin Hypercube Sampling (LHS) data sets, and use of uniform or normal input parameter distributions also did not lead to any significant differences between these data sets.
American Psychological Association (APA)
Strydom, Gerhard. 2013. Uncertainty and Sensitivity Analyses of a Pebble Bed HTGR Loss of Cooling Event. Science and Technology of Nuclear Installations،Vol. 2013, no. 2013, pp.1-16.
https://search.emarefa.net/detail/BIM-471278
Modern Language Association (MLA)
Strydom, Gerhard. Uncertainty and Sensitivity Analyses of a Pebble Bed HTGR Loss of Cooling Event. Science and Technology of Nuclear Installations No. 2013 (2013), pp.1-16.
https://search.emarefa.net/detail/BIM-471278
American Medical Association (AMA)
Strydom, Gerhard. Uncertainty and Sensitivity Analyses of a Pebble Bed HTGR Loss of Cooling Event. Science and Technology of Nuclear Installations. 2013. Vol. 2013, no. 2013, pp.1-16.
https://search.emarefa.net/detail/BIM-471278
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-471278