Preliminary reactor safety analyses were performed for the Pu-burner HTGR (High Temperature Gas-cooled Reactor) to investigate plutonium fuel influence on reactor thermal and kinetic behavior for the depressurization accident which is design base accident, and the depressurization accident without scram, which is beyond design base accident. The analytical results of depressurization accident show that the reactor thermal power is restricted lower than the reference reactor with uranium fuel, because the core width is wider for better Pu-burning performance. The analytical results of depressurization accident without scram show that the re-criticality is delayed compare to the reference reactor with uranium-fueled core, due to its temperature reactivity coefficient. The delay of re-criticality brings that operators have more margins for accident management, for example, manual insertion of shutdown devices to the reactor core.
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2017 25th International Conference on Nuclear Engineering
July 2–6, 2017
Shanghai, China
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-5783-0
PROCEEDINGS PAPER
Development of Security and Safety Fuel for Pu-Burner HTGR: Part 3 — Preliminary Reactor Safety Analyses Under Depressurization Accidents
Masaaki Nakano,
Masaaki Nakano
Fuji Electric Co., Ltd., Kawasaki, Japan
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Kazutaka Ohashi,
Kazutaka Ohashi
Fuji Electric Co., Ltd., Kawasaki, Japan
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Koji Okamoto
Koji Okamoto
University of Tokyo, Tokai, Japan
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Masaaki Nakano
Fuji Electric Co., Ltd., Kawasaki, Japan
Kazutaka Ohashi
Fuji Electric Co., Ltd., Kawasaki, Japan
Koji Okamoto
University of Tokyo, Tokai, Japan
Paper No:
ICONE25-66907, V005T05A025; 4 pages
Published Online:
October 17, 2017
Citation
Nakano, M, Ohashi, K, & Okamoto, K. "Development of Security and Safety Fuel for Pu-Burner HTGR: Part 3 — Preliminary Reactor Safety Analyses Under Depressurization Accidents." Proceedings of the 2017 25th International Conference on Nuclear Engineering. Volume 5: Advanced and Next Generation Reactors, Fusion Technology; Codes, Standards, Conformity Assessment, Licensing, and Regulatory Issues. Shanghai, China. July 2–6, 2017. V005T05A025. ASME. https://doi.org/10.1115/ICONE25-66907
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