JPS5472399A - Nuclear fuel element - Google Patents
Nuclear fuel elementInfo
- Publication number
- JPS5472399A JPS5472399A JP13947577A JP13947577A JPS5472399A JP S5472399 A JPS5472399 A JP S5472399A JP 13947577 A JP13947577 A JP 13947577A JP 13947577 A JP13947577 A JP 13947577A JP S5472399 A JPS5472399 A JP S5472399A
- Authority
- JP
- Japan
- Prior art keywords
- pellet
- excess
- oxgen
- powder
- zro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
PURPOSE: To subject the inner surface of a cladding tube to be always coated by a thin film of ZrO2 during irradiation, by means of making oxgen to excess the chemical composition of the surface of an UO2 pellet.
CONSTITUTION: The surface layer 1 of an UO2 pellet is made into the chemical composition of excess of oxygen by means of compression moulding by entering the powder of UO2+x at the outside and the powder of UO2-x at the innside, and of compression moulding thereafter when the UO2 powder is compression moulded. The degree of excess of oxygen is subjected the ratio of oxgen against U to be held at the range from 2.05 to 2.25. And at this time, the thickness l of the surface layer of a pellet, the formula l ≤ r x 0.04 / 10 (O/U-2)(where, r is a radius of a pellet, and O/U is a ratio of O/U comparison of the surface layers) should be fulfilled. By such means, the excess oxgen on the surface of the pellet reacts with the Zircalloy coated tube, the corrosion is prevented by means of coating the inner surface of the cladding tube by the coating film of ZrO2.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13947577A JPS5472399A (en) | 1977-11-22 | 1977-11-22 | Nuclear fuel element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13947577A JPS5472399A (en) | 1977-11-22 | 1977-11-22 | Nuclear fuel element |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5472399A true JPS5472399A (en) | 1979-06-09 |
Family
ID=15246101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13947577A Pending JPS5472399A (en) | 1977-11-22 | 1977-11-22 | Nuclear fuel element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5472399A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021527802A (en) * | 2018-06-21 | 2021-10-14 | ウェスティングハウス エレクトリック スウェーデン アーベー | Fuel pellet |
-
1977
- 1977-11-22 JP JP13947577A patent/JPS5472399A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021527802A (en) * | 2018-06-21 | 2021-10-14 | ウェスティングハウス エレクトリック スウェーデン アーベー | Fuel pellet |
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