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3D Coupled Code SPARKLE-2 for PWR Non-LOCA Analysis

[+] Author Affiliations
Hikaru Sakamoto, Manabu Miyata, Manabu Maruyama, Junto Ogawa

Mitsubishi Heavy Industries, Ltd., Kobe, Hyogo, Japan

Paper No. ICONE20-POWER2012-54583, pp. 485-492; 8 pages
  • 2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference
  • Volume 4: Codes, Standards, Licensing, and Regulatory Issues; Fuel Cycle, Radioactive Waste Management and Decommissioning; Computational Fluid Dynamics (CFD) and Coupled Codes; Instrumentation and Controls; Fuels and Combustion, Materials Handling, Emissions; Advanced Energy Systems and Renewables (Wind, Solar, Geothermal); Performance Testing and Performance Test Codes
  • Anaheim, California, USA, July 30–August 3, 2012
  • Conference Sponsors: Nuclear Engineering Division, Power Division
  • ISBN: 978-0-7918-4498-4
  • Copyright © 2012 by ASME


Mitsubishi Heavy Industries (MHI) developed the SPARKLE-2 code, which is a coupling of the PWR system transient analysis code M-RELAP5, the 3D neutron kinetics code COSMO-K, and the 3D core thermal-hydraulics code MIDAC. MHI validated the coupling calculation, including data transfer and the total reactor coolant system response, with the OECD/NEA MSLB benchmark problem. This benchmark problem has been used to verify coupled codes developed and used by many organizations. The calculation results of the SPARKLE-2 code indicate good agreement with other benchmark participants’ results.

MHI has performed a study of the applicability of the SPARKLE-2 code to the rod ejection and main steam line break events which are representative non-loss of coolant accident (non-LOCA) events which accompany dynamic changes in local core parameters. The results of the evaluation are compared with the current US-APWR DCD [1] case. The results have shown that the current analyses described in the US-APWR DCD are sufficiently conservative and hence this verifies that the US-APWR reactor design contains sufficient thermal margins.

Copyright © 2012 by ASME



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