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title月面用超小型原子炉RAPID-Lの起動解析
Other TitleStartup transient analysis of RAPID-L micro nuclear reactor for lunar base power system
Author(jpn)神戸 満; 佐藤 理; 角田 弘和
Author(eng)Kanbe, Mitsuru; Sato, Osamu; Tsunoda, Hirokazu
Author Affiliation(jpn)電力中央研究所; 三菱総合研究所; エム・アール・アイリサーチアソシエイツ
Author Affiliation(eng)Central Research Institute of Electric Power Industry (CRIEPI); Mitsubishi Research Institute Inc. (MRI); MRI Research Associates Inc. (MRA)
Issue Date2008-05
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
宇宙航空研究開発機構宇宙科学研究本部
Publication title第27回宇宙エネルギーシンポジウム 平成19年度
The Twenty-seventh Space Energy Symposium
Start page136
End page140
Publication date2008-05
Languagejpn
AbstractThe 200 kWe uranium-nitride fueled lithium cooled fast reactor concept RAPID-L (Refueling by All Pins Integrated Design-L) to be combined with thermoelectric power conversion system for lunar base power system is demonstrated. Unique challenges in reactivity control systems design have been attempted in RAPID-L concept. The reactor involves the following innovative reactivity control systems: Lithium Expansion Modules (LEM) for inherent reactivity feedback, Lithium Injection Modules (LIM) for inherent ultimate shutdown, and Lithium Release Modules (LRM) for automated reactor startup. All these systems adopt lithium-6 as a liquid poison instead of conventional B4C rods or Be reflectors. These systems are effective independent of the magnitude and direction of the gravity force. In 2006, however, the following design amendment has been made. (1) B4C poison rods were added to ensure criticality safety in unintended positive reactivity insertion by LRMs due to fire in the launch phase accident; because LRM freeze seal melts at 800 C which result in positive reactivity insertion. (2) Lower hot standby temperature of 200 C was adopted instead of conventional 800 C to reduce the external power at the startup. In this paper, RAPID-L reactor control systems, startup sequence and its transient characteristics are presented.
Keywordsliquid metal cooled reactor; liquid lithium; lunar base; thermoelectric power generation; reactor startup test; lunar exploration; nuclear reactor control; RAPID-L; reactor safety; 液体金属冷却原子炉; 液体リチウム; 月面基地; 熱電発電; 原子炉始動試験; 月探査; 原子炉制御; RAPID-L; 原子炉安全性
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会
SHI-NOAA0063965028
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/41200


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