The main objective of the reported study was developing a method for predicting PCI failure risk in PWR fuel during Condition 2 transients that would strike a balance between simplicity and accuracy, allow for straightforward implementation within a transient analysis methodology or core monitoring system, and include treatment of the most important PCI factors. The developed method has the following features: relies on readily calculated/available quantities such as nodal burn-up, local power, average cladding temperature and pressure differential across cladding at zero burnup, uses a power increase past gap closure as a failure criterion, replaces a bounding method with a best estimate one. It allows calculating failure risk for a given ramp power or establishing a ramp power corresponding to a certain failure probability, when relevant uncertainties are considered, provides for accuracy comparable to a fuel performance code in calculating PCI failure risk in ramp tests representative of Condition 2 transients, offers a way to infer the safe threshold from ramp test data.
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18th International Conference on Nuclear Engineering
May 17–21, 2010
Xi’an, China
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-4933-0
PROCEEDINGS PAPER
PCI Risk Assessment Model Available to Purchase
Dmitry Paramonov
Dmitry Paramonov
Westinghouse Electric Company, Monroeville, PA
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Dmitry Paramonov
Westinghouse Electric Company, Monroeville, PA
Paper No:
ICONE18-29838, pp. 585-591; 7 pages
Published Online:
April 8, 2011
Citation
Paramonov, D. "PCI Risk Assessment Model." Proceedings of the 18th International Conference on Nuclear Engineering. 18th International Conference on Nuclear Engineering: Volume 5. Xi’an, China. May 17–21, 2010. pp. 585-591. ASME. https://doi.org/10.1115/ICONE18-29838
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