Our goal is to evaluate validity of numerical simulation results in the nuclear field in order to estimate real behavior of nuclear plants and thus to contribute their security and safety. Recently, it becomes possible to execute a full-scale numerical simulation under a real condition, such as a seismic behavior of entire nuclear plant. To estimate real behavior accurately by such simulations, it is indispensable to evaluate validity of simulation results because numerical simulations include various uncertainties such as “uncertainty due to randomness” and “uncertainty due to lack of knowledge”. As one of approaches to evaluate validity of simulation results, we introduce “the degree of certainty” of simulations to real behavior. Here, to get a more accurate degree of certainty, we try to confirm the degree of influence about unevenness of uncertainty and to reduce uncertainty due to lack of knowledge. For this, we research and develop a validity evaluation system composed of three tools. One is a tool able to introduce the degree of certainty from various uncertainties to put together various uncertainties. Another is a tool able to analyze the sensitivity of each uncertainty to whole uncertainty. Moreover, we research a tool able to analyze factors of various uncertainties. We have applied them to our seismic simulation system which enables to execute the assembly structure analysis of an entire nuclear plant and confirmed that their functions are applicable to the simulation.
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2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference
July 30–August 3, 2012
Anaheim, California, USA
Conference Sponsors:
- Nuclear Engineering Division
- Power Division
ISBN:
978-0-7918-4496-0
PROCEEDINGS PAPER
R&D of Validity Evaluation System for Seismic Simulation of Entire Nuclear Plant
Yoshio Suzuki,
Yoshio Suzuki
Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
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Hiroko Nakamura Miyamura,
Hiroko Nakamura Miyamura
Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
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Norihiro Nakajima
Norihiro Nakajima
Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
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Yoshio Suzuki
Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
Hiroko Nakamura Miyamura
Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
Norihiro Nakajima
Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
Paper No:
ICONE20-POWER2012-54231, pp. 43-51; 9 pages
Published Online:
October 30, 2013
Citation
Suzuki, Y, Miyamura, HN, & Nakajima, N. "R&D of Validity Evaluation System for Seismic Simulation of Entire Nuclear Plant." Proceedings of the 2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference. Volume 2: Plant Systems, Structures, and Components; Safety and Security; Next Generation Systems; Heat Exchangers and Cooling Systems. Anaheim, California, USA. July 30–August 3, 2012. pp. 43-51. ASME. https://doi.org/10.1115/ICONE20-POWER2012-54231
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