Design study of nuclear power systems for deep space explorers (1) criticality of low enriched uranium fueled core

Teruhiko Kugo, Hiroshi Akie, Akifumi Yamaji, Kunihiko Nabeshima, Takamichi Iwamura, Hajime Akikmoto

研究成果: Conference contribution

3 引用 (Scopus)

抄録

Combining a nuclear reactor with thermoelectric converters is expected to be one of the few promising options to supply a propulsion power for deep space explorers. In the present study, the criticality of low enriched uranium reactor core is surveyed. The fuel materials of uranium oxide, nitride and metal were examined. Zirconium and yttrium hydrides, beryllium, zirconium beryllide and graphite were considered as the moderator materials. The reflector materials of beryllium, beryllium oxide and graphite were taken into consideration. The investigation of criticality of the low enriched uranium core was performed by changing the ratio of the fuel, moderator and structure in the core, and the thickness of the reflector. As a result from the viewpoint of the smaller critical mass of the low enriched uranium fueled reactor, it is found to be better to use the thermal spectrum system than the fast system, and the metal hydride moderators than beryllium or graphite. Promising reactor core concepts, which attain criticality with the reactor mass of less than 1,000kg, are obtained when zirconium hydride, yttrium hydride or beryllium is used for moderator. For example, the combination of uranium nitride fuel, yttrium hydride moderator and beryllium reflector achieves the reactor mass of as low as 500kg.

元の言語English
ホスト出版物のタイトルInternational Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009
出版者Atomic Energy Society of Japan
ページ2487-2494
ページ数8
3
ISBN(印刷物)9781617386084
出版物ステータスPublished - 2009
外部発表Yes
イベントInternational Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009 - Shinjuku, Tokyo, Japan
継続期間: 2009 5 102009 5 14

Other

OtherInternational Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009
Japan
Shinjuku, Tokyo
期間09/5/1009/5/14

Fingerprint

Criticality (nuclear fission)
Moderators
Beryllium
Hydrides
Nuclear energy
Uranium
Yttrium
Zirconium
Graphite
Reactor cores
Nitrides
Beryllia
Nuclear reactors
Metals
Propulsion
Oxides

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering

これを引用

Kugo, T., Akie, H., Yamaji, A., Nabeshima, K., Iwamura, T., & Akikmoto, H. (2009). Design study of nuclear power systems for deep space explorers (1) criticality of low enriched uranium fueled core. : International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009 (巻 3, pp. 2487-2494). Atomic Energy Society of Japan.

Design study of nuclear power systems for deep space explorers (1) criticality of low enriched uranium fueled core. / Kugo, Teruhiko; Akie, Hiroshi; Yamaji, Akifumi; Nabeshima, Kunihiko; Iwamura, Takamichi; Akikmoto, Hajime.

International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009. 巻 3 Atomic Energy Society of Japan, 2009. p. 2487-2494.

研究成果: Conference contribution

Kugo, T, Akie, H, Yamaji, A, Nabeshima, K, Iwamura, T & Akikmoto, H 2009, Design study of nuclear power systems for deep space explorers (1) criticality of low enriched uranium fueled core. : International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009. 巻. 3, Atomic Energy Society of Japan, pp. 2487-2494, International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009, Shinjuku, Tokyo, Japan, 09/5/10.
Kugo T, Akie H, Yamaji A, Nabeshima K, Iwamura T, Akikmoto H. Design study of nuclear power systems for deep space explorers (1) criticality of low enriched uranium fueled core. : International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009. 巻 3. Atomic Energy Society of Japan. 2009. p. 2487-2494
Kugo, Teruhiko ; Akie, Hiroshi ; Yamaji, Akifumi ; Nabeshima, Kunihiko ; Iwamura, Takamichi ; Akikmoto, Hajime. / Design study of nuclear power systems for deep space explorers (1) criticality of low enriched uranium fueled core. International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009. 巻 3 Atomic Energy Society of Japan, 2009. pp. 2487-2494
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