JP6961719B2 - 核燃料ペレット、燃料棒、および燃料アセンブリ - Google Patents
核燃料ペレット、燃料棒、および燃料アセンブリ Download PDFInfo
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- JP6961719B2 JP6961719B2 JP2019562421A JP2019562421A JP6961719B2 JP 6961719 B2 JP6961719 B2 JP 6961719B2 JP 2019562421 A JP2019562421 A JP 2019562421A JP 2019562421 A JP2019562421 A JP 2019562421A JP 6961719 B2 JP6961719 B2 JP 6961719B2
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- fuel
- nuclear fuel
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- metal matrix
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/42—Selection of substances for use as reactor fuel
- G21C3/58—Solid reactor fuel Pellets made of fissile material
- G21C3/62—Ceramic fuel
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/42—Selection of substances for use as reactor fuel
- G21C3/58—Solid reactor fuel Pellets made of fissile material
- G21C3/62—Ceramic fuel
- G21C3/64—Ceramic dispersion fuel, e.g. cermet
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C21/00—Apparatus or processes specially adapted to the manufacture of reactors or parts thereof
- G21C21/02—Manufacture of fuel elements or breeder elements contained in non-active casings
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/02—Fuel elements
- G21C3/04—Constructional details
- G21C3/045—Pellets
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
- G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Description
−高い熱伝導性、
−低い膨張(核分裂過程による固体膨張および核分裂ガス泡構造によるガス膨張)、
−類似の熱膨張、
−蒸気におけるおよび被覆材による良好な高温腐食挙動、
−高い延性、および
−適切に低い熱中性子断面積。
Claims (12)
- 金属マトリックス(20)および前記金属マトリックス(20)内に分散する核分裂性物質のセラミック燃料粒子(21)を含む、原子炉用の核燃料ペレット(10)であって、
前記金属マトリックス(20)は、主要要素U、Zr、NbおよびTi、ならびに考えられる残りの要素から成る合金であり、前記金属マトリックス中の前記主要要素の各々の濃度は、多くとも50モル%であることを特徴とする、核燃料ペレット(10)。 - 前記金属マトリックス中の前記主要要素の各々の濃度は、少なくとも5モル%である、請求項1に記載の核燃料ペレット(10)。
- 前記合金は、単相合金または、合金の5体積%未満を構成する沈殿物を有する単相に近い合金である、請求項1または2に記載の核燃料ペレット(10)。
- 前記合金は、高エントロピー合金(HEA)である、請求項1〜3のいずれか1項に記載の核燃料ペレット(10)。
- 前記合金は、U5−6Zr3−4NbTiである、請求項1〜4のいずれか1項に記載の核燃料ペレット(10)。
- 前記合金は、体心立方構造を有する、請求項1〜5のいずれか1項に記載の核燃料ペレット(10)。
- 前記金属マトリックス(20)の考えられる残りの要素の全濃度は、多くとも5モル%である、請求項1〜6のいずれか1項に記載の核燃料ペレット(10)。
- 前記セラミック燃料粒子(21)は、前記金属マトリックス(20)に一様に分散される、請求項1〜7のいずれか1項に記載の核燃料ペレット(10)。
- 前記セラミック燃料粒子(21)は、酸化アクチニド、窒化アクチニド、アクチニド珪化物、および炭化アクチニドのグループから選択される少なくとも1つの核分裂性物質を含む、請求項1〜8のいずれか1項に記載の核燃料ペレット(10)。
- 前記セラミック燃料粒子(21)は、UO2、U3Si2、U3Si、USi、UN、PuO2、Pu3Si2、Pu3Si、PuSi、PuN、ThO2、Th3Si2、Th3Si、ThSiおよびThNのグループから選択される少なくとも1つの核分裂性物質を含む、請求項1〜9のいずれか1項に記載の核燃料ペレット(10)。
- 請求項1〜10のいずれか1項に記載の複数の核燃料ペレット(10)を囲む被覆管(11)を含む燃料棒(4)。
- 請求項11に記載の複数の燃料棒(4)を含む、原子炉に用いられる燃料アセンブリ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17170860.5 | 2017-05-12 | ||
EP17170860.5A EP3401924B1 (en) | 2017-05-12 | 2017-05-12 | A nuclear fuel pellet, a fuel rod, and a fuel assembly |
PCT/EP2018/059653 WO2018206234A1 (en) | 2017-05-12 | 2018-04-16 | A nuclear fuel pellet, a fuel rod, and a fuel assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2020519896A JP2020519896A (ja) | 2020-07-02 |
JP6961719B2 true JP6961719B2 (ja) | 2021-11-05 |
Family
ID=58707404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019562421A Active JP6961719B2 (ja) | 2017-05-12 | 2018-04-16 | 核燃料ペレット、燃料棒、および燃料アセンブリ |
Country Status (6)
Country | Link |
---|---|
US (1) | US11456083B2 (ja) |
EP (1) | EP3401924B1 (ja) |
JP (1) | JP6961719B2 (ja) |
ES (1) | ES2776802T3 (ja) |
TW (1) | TWI731219B (ja) |
WO (1) | WO2018206234A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20200258642A1 (en) * | 2019-02-12 | 2020-08-13 | Westinghouse Electric Company, Llc | Sintering with sps/fast uranium fuel with or without burnable absorbers |
CN113012827A (zh) * | 2021-02-25 | 2021-06-22 | 上海核工程研究设计院有限公司 | 一种抗水腐蚀氮化铀复合燃料芯块 |
CN112992390A (zh) * | 2021-02-25 | 2021-06-18 | 上海核工程研究设计院有限公司 | 一种高安全性的硅化铀复合燃料芯块 |
CN117413321A (zh) * | 2021-05-20 | 2024-01-16 | 中广核研究院有限公司 | 高熵陶瓷惰性基弥散燃料芯块及其制备方法 |
CN113603490B (zh) * | 2021-07-22 | 2022-10-25 | 中广核研究院有限公司 | 高熵陶瓷惰性基弥散燃料芯块及其制备方法 |
CN114561602B (zh) * | 2022-03-02 | 2022-09-30 | 东北大学 | 一种NbTiZrU系含铀高熵合金 |
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2017
- 2017-05-12 ES ES17170860T patent/ES2776802T3/es active Active
- 2017-05-12 EP EP17170860.5A patent/EP3401924B1/en active Active
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2018
- 2018-02-14 TW TW107105589A patent/TWI731219B/zh active
- 2018-04-16 US US16/611,328 patent/US11456083B2/en active Active
- 2018-04-16 JP JP2019562421A patent/JP6961719B2/ja active Active
- 2018-04-16 WO PCT/EP2018/059653 patent/WO2018206234A1/en active Application Filing
Also Published As
Publication number | Publication date |
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TWI731219B (zh) | 2021-06-21 |
ES2776802T3 (es) | 2020-08-03 |
TW201901696A (zh) | 2019-01-01 |
WO2018206234A1 (en) | 2018-11-15 |
US11456083B2 (en) | 2022-09-27 |
EP3401924A1 (en) | 2018-11-14 |
US20200168351A1 (en) | 2020-05-28 |
JP2020519896A (ja) | 2020-07-02 |
EP3401924B1 (en) | 2019-12-11 |
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