JP2021527802A - 燃料ペレット - Google Patents
燃料ペレット Download PDFInfo
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- JP2021527802A JP2021527802A JP2020565935A JP2020565935A JP2021527802A JP 2021527802 A JP2021527802 A JP 2021527802A JP 2020565935 A JP2020565935 A JP 2020565935A JP 2020565935 A JP2020565935 A JP 2020565935A JP 2021527802 A JP2021527802 A JP 2021527802A
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- Prior art keywords
- fuel
- region
- excess oxygen
- outer rim
- pellet
- Prior art date
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- 239000000446 fuel Substances 0.000 title claims abstract description 98
- 239000008188 pellet Substances 0.000 title claims abstract description 82
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000001301 oxygen Substances 0.000 claims abstract description 52
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 52
- WZECUPJJEIXUKY-UHFFFAOYSA-N [O-2].[O-2].[O-2].[U+6] Chemical compound [O-2].[O-2].[O-2].[U+6] WZECUPJJEIXUKY-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910000439 uranium oxide Inorganic materials 0.000 claims abstract description 21
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000126 substance Substances 0.000 claims abstract description 19
- 239000012286 potassium permanganate Substances 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 34
- 238000005253 cladding Methods 0.000 claims description 26
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 229910052770 Uranium Inorganic materials 0.000 claims description 6
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 claims description 6
- 230000003111 delayed effect Effects 0.000 claims description 4
- 230000001934 delay Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 abstract description 2
- 239000003758 nuclear fuel Substances 0.000 description 18
- 230000004992 fission Effects 0.000 description 15
- 230000007547 defect Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000000654 additive Substances 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000012634 fragment Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052781 Neptunium Inorganic materials 0.000 description 2
- 229910052778 Plutonium Inorganic materials 0.000 description 2
- 229910001093 Zr alloy Inorganic materials 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- LFNLGNPSGWYGGD-UHFFFAOYSA-N neptunium atom Chemical compound [Np] LFNLGNPSGWYGGD-UHFFFAOYSA-N 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- OYEHPCDNVJXUIW-UHFFFAOYSA-N plutonium atom Chemical compound [Pu] OYEHPCDNVJXUIW-UHFFFAOYSA-N 0.000 description 2
- 229910052695 Americium Inorganic materials 0.000 description 1
- 229910052685 Curium Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 150000001224 Uranium Chemical class 0.000 description 1
- 229910008894 U—Mo Inorganic materials 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- LXQXZNRPTYVCNG-UHFFFAOYSA-N americium atom Chemical compound [Am] LXQXZNRPTYVCNG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- OOAWCECZEHPMBX-UHFFFAOYSA-N oxygen(2-);uranium(4+) Chemical compound [O-2].[O-2].[U+4] OOAWCECZEHPMBX-UHFFFAOYSA-N 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- FCTBKIHDJGHPPO-UHFFFAOYSA-N uranium dioxide Inorganic materials O=[U]=O FCTBKIHDJGHPPO-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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
- G21C3/048—Shape of pellets
-
- 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
- G21C3/623—Oxide fuels
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G43/00—Compounds of uranium
- C01G43/01—Oxides; Hydroxides
- C01G43/025—Uranium dioxide
-
- 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
-
- 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
- G21C3/326—Bundles of parallel pin-, rod-, or tube-shaped fuel elements comprising fuel elements of different composition; comprising, in addition to the fuel elements, other pin-, rod-, or tube-shaped elements, e.g. control rods, grid support rods, fertile rods, poison rods or dummy rods
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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)
- Chemical & Material Sciences (AREA)
- High Energy & Nuclear Physics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
【選択図】図1
Description
化学処理後、外側リム領域6は、UO2だけでなく、UO2+Xも含む。
過剰な酸素を得る工程は、ペレットの外側リム領域にのみ酸素を添加することによって達成される。
溶液の温度は15〜80℃の範囲内である。
Claims (15)
- 内側領域(4)および前記内側領域(4)の周りの外側リム領域(6)を含む酸化ウラン燃料ペレット(2)であって、前記酸化ウラン燃料ペレット(2)が円筒状であり、前記内側領域(4)および前記外側リム領域(6)が同軸の円筒状領域であり、前記外側リム領域(6)が前記内側領域(4)に比べて過剰な酸素を有する、高燃焼度構造(HBS)の形成が抑制または遅延される酸化ウラン燃料ペレット(2)。
- 前記酸化ウラン燃料ペレットの前記外側リム領域(6)のみに酸素を添加することにより、前記過剰な酸素を得ることを特徴とする請求項1に記載の酸化ウラン燃料ペレット(2)。
- 前記過剰な酸素は、過酸化水素(H2O2)の溶液中に浸漬することによる化学処理を行うことにより得られることを特徴とする請求項1または2に記載の酸化ウラン燃料ペレット(2)。
- 前記過剰な酸素は、過マンガン酸カリウム(KMnO4)の溶液中に浸漬することによる化学処理を行うことにより得られることを特徴とする請求項1または2に記載の酸化ウラン燃料ペレット(2)。
- 前記外側リム領域(6)の最大厚さが100pmである請求項1〜4のいずれかに記載の酸化ウラン燃料ペレット(2)。
- 前記酸化ウラン燃料ペレットの前記外側リム領域(6)における前記過剰な酸素が、モル含有量で5%の余分のOで請求項1〜5のいずれかに記載の酸化ウラン燃料ペレット(2)。
- 請求項1〜6のいずれかに記載の複数のウラン燃料ペレット(2)が軸方向に整列して詰め込まれた被覆管(10)を含む燃料棒(8)。
- 前記被覆管(10)の内面には酸化物皮膜が設けられており、前記酸化物皮膜は、前記被覆管を過酸化水素(H2O2)または過マンガン酸カリウム(KMnO4)の溶液中に浸漬することによる化学処理によって得られることを特徴とする請求項7に記載の燃料棒(8)。
- 請求項7または8に記載の複数の燃料棒(8)を含む燃料棒アセンブリ(12)。
- 内側領域および前記内側領域の周りの外側リム領域を含む酸化ウラン燃料ペレットを調製する方法であって、前記酸化ウラン燃料ペレットが円筒状であり、前記内側領域および前記外側リム領域が同軸の円筒状領域であり、前記方法は前記内側領域に比べて前記外側リム領域に過剰な酸素を提供することを含み、高燃焼度構造(HBS)の形成が抑制または遅延される、方法。
- 前記酸化ウラン燃料ペレットを過酸化水素(H2O2)の溶液中に浸漬することによる化学処理により前記過剰な酸素を得ることを特徴とする請求項10に記載の方法。
- 前記酸化ウラン燃料ペレットを過マンガン酸カリウム(KMnO4)の溶液中に浸漬するによる化学処理により前記過剰な酸素を得ることを特徴とする請求項10に記載の方法。
- 請求項10〜12のいずれかに記載の方法であって、前記酸化ウラン燃料ペレットが形成され、粉砕された後に、前記過剰な酸素を添加することを含む、方法。
- 燃料棒に関する方法であって、前記燃料棒は、請求項10〜13のいずれかに記載の方法によって得られる複数のウラン燃料ペレットを含み、前記ウラン燃料ペレットは、軸方向に整列して充填されるように意図された被覆管を提供し、前記方法が、前記被覆管の内面に酸化物被膜を提供することを含む、方法。
- 被覆管を過酸化水素(H2O2)または過マンガン酸カリウム(KMnO4)の溶液中に浸漬することによる化学処理によって前記酸化物被膜を提供することを溶液、請求項14に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18179142.7 | 2018-06-21 | ||
EP18179142.7A EP3588514B1 (en) | 2018-06-21 | 2018-06-21 | Fuel pellet and method of preparing a fuel pellet |
PCT/EP2019/065061 WO2019243095A1 (en) | 2018-06-21 | 2019-06-10 | Fuel pellet |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2021527802A true JP2021527802A (ja) | 2021-10-14 |
JPWO2019243095A5 JPWO2019243095A5 (ja) | 2022-04-07 |
JP7286680B2 JP7286680B2 (ja) | 2023-06-05 |
Family
ID=62784012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2020565935A Active JP7286680B2 (ja) | 2018-06-21 | 2019-06-10 | 燃料ペレット |
Country Status (9)
Country | Link |
---|---|
US (1) | US11335468B2 (ja) |
EP (1) | EP3588514B1 (ja) |
JP (1) | JP7286680B2 (ja) |
KR (1) | KR102646971B1 (ja) |
CN (1) | CN112334991B (ja) |
ES (1) | ES2964846T3 (ja) |
PL (1) | PL3588514T3 (ja) |
WO (1) | WO2019243095A1 (ja) |
ZA (1) | ZA202006960B (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2021445518A1 (en) | 2021-05-11 | 2024-01-04 | Clean Core Thorium Energy Llc | Thorium-based fuel design for pressurized heavy water reactors |
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JPS52113494A (en) * | 1976-03-19 | 1977-09-22 | Hitachi Ltd | Fuel element |
JPS5472399A (en) * | 1977-11-22 | 1979-06-09 | Toshiba Corp | Nuclear fuel element |
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JPH09127279A (ja) * | 1995-11-06 | 1997-05-16 | Nuclear Fuel Ind Ltd | 核燃料ペレットおよびその製造方法 |
US20170271034A1 (en) * | 2014-09-08 | 2017-09-21 | Westinghouse Electric Sweden Ab | Method of making a nuclear fuel pellet for a nuclear power reactor |
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2018
- 2018-06-21 EP EP18179142.7A patent/EP3588514B1/en active Active
- 2018-06-21 PL PL18179142.7T patent/PL3588514T3/pl unknown
- 2018-06-21 ES ES18179142T patent/ES2964846T3/es active Active
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2019
- 2019-06-10 JP JP2020565935A patent/JP7286680B2/ja active Active
- 2019-06-10 US US17/253,288 patent/US11335468B2/en active Active
- 2019-06-10 KR KR1020207035839A patent/KR102646971B1/ko active IP Right Grant
- 2019-06-10 CN CN201980039865.XA patent/CN112334991B/zh active Active
- 2019-06-10 WO PCT/EP2019/065061 patent/WO2019243095A1/en active Application Filing
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2020
- 2020-11-09 ZA ZA2020/06960A patent/ZA202006960B/en unknown
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JPS52113494A (en) * | 1976-03-19 | 1977-09-22 | Hitachi Ltd | Fuel element |
JPS5472399A (en) * | 1977-11-22 | 1979-06-09 | Toshiba Corp | Nuclear fuel element |
JPS5895617A (ja) * | 1981-10-13 | 1983-06-07 | ゼネラル・エレクトリツク・カンパニイ | 酸化ウランの粒度を増大させる方法 |
JPH02297096A (ja) * | 1989-05-01 | 1990-12-07 | Westinghouse Electric Corp <We> | 可燃性吸収材被覆核燃料 |
JPH06281766A (ja) * | 1993-03-24 | 1994-10-07 | Nuclear Fuel Ind Ltd | 原子炉用燃料棒 |
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Also Published As
Publication number | Publication date |
---|---|
EP3588514B1 (en) | 2023-09-27 |
EP3588514A1 (en) | 2020-01-01 |
US20210272709A1 (en) | 2021-09-02 |
KR102646971B1 (ko) | 2024-03-12 |
CN112334991B (zh) | 2024-05-07 |
ZA202006960B (en) | 2022-03-30 |
EP3588514C0 (en) | 2023-09-27 |
JP7286680B2 (ja) | 2023-06-05 |
PL3588514T3 (pl) | 2024-03-18 |
ES2964846T3 (es) | 2024-04-09 |
KR20210022565A (ko) | 2021-03-03 |
WO2019243095A1 (en) | 2019-12-26 |
CN112334991A (zh) | 2021-02-05 |
US11335468B2 (en) | 2022-05-17 |
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