During design of Class I components in Nuclear Power Plants, cumulative usage factors (CUF) are conservatively calculated to estimate fatigue damage, and results must be below the limits of the applicable codes. Nevertheless, when these results are used to evaluate the possibility of using these components for an extended life, the results are frequently above code limits. Many Nuclear Power Plants have installed commercial fatigue monitoring systems at critical components in order to assess transient severity and cycle count for life extension fatigue calculations among other reasons. Since the commissioning of the system, unexpected operation modes and thermal stratification was discovered and evaluations needed to be done. Findings, interpretations and solving are presented in this paper.
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ASME 2018 Pressure Vessels and Piping Conference
July 15–20, 2018
Prague, Czech Republic
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5158-6
PROCEEDINGS PAPER
Fatigue Monitoring: Case Studies in Nuclear Power Plant Available to Purchase
G. Bourguigne,
G. Bourguigne
Nucleoeléctrica Argentina S.A., Capital Federal, Argentina
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F. Schroeter
F. Schroeter
Nucleoeléctrica Argentina S.A., Capital Federal, Argentina
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G. Bourguigne
Nucleoeléctrica Argentina S.A., Capital Federal, Argentina
F. Schroeter
Nucleoeléctrica Argentina S.A., Capital Federal, Argentina
Paper No:
PVP2018-84007, V01AT01A033; 7 pages
Published Online:
October 26, 2018
Citation
Bourguigne, G, & Schroeter, F. "Fatigue Monitoring: Case Studies in Nuclear Power Plant." Proceedings of the ASME 2018 Pressure Vessels and Piping Conference. Volume 1A: Codes and Standards. Prague, Czech Republic. July 15–20, 2018. V01AT01A033. ASME. https://doi.org/10.1115/PVP2018-84007
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