| Project/Area Number |
15K06676
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Nuclear engineering
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
Takamatsu Kuniyoshi 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 高温ガス炉水素・熱利用研究センター, 研究副主幹 (70414547)
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| Co-Investigator(Kenkyū-buntansha) |
守田 幸路 九州大学, 工学研究院, 教授 (40311849)
松元 達也 九州大学, 工学研究院, 助教 (90325514)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 格納容器 / 冷却設備 / 受動的安全性 / 輻射 / 自然対流 / 熱伝導 / 崩壊熱 / 高温ガス炉 / HTTR / HTGR |
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| Outline of Final Research Achievements |
A new reactor cavity cooling system (RCCS) with passive safety features without a requirement for electricity and mechanical drive is proposed. The RCCS consists of two continuous closed regions: an ex-reactor pressure vessel (ex-RPV) region and a cooling region with a heat-transfer surface to ambient air. The RCCS uses a novel shape to efficiently remove the heat released from the RPV through thermal radiation and natural convection. Employing air as a working fluid and ambient air as an ultimate heat sink, the novel RCCS design strongly reduces the possibility of losing the heat sink for decay-heat-removal during nuclear accidents including a station blackout(SBO). The RCCS could stably and passively remove the heat released from the RPV at the rated operation and the decay heat after reactor shutdown.
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