GB1271644A - Improvements in nuclear fuel elements - Google Patents
Improvements in nuclear fuel elementsInfo
- Publication number
- GB1271644A GB1271644A GB35399/68A GB3539968A GB1271644A GB 1271644 A GB1271644 A GB 1271644A GB 35399/68 A GB35399/68 A GB 35399/68A GB 3539968 A GB3539968 A GB 3539968A GB 1271644 A GB1271644 A GB 1271644A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheath
- fuel
- shape
- equilateral
- july
- 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.)
- Expired
Links
- 239000003758 nuclear fuel Substances 0.000 title 1
Classifications
-
- 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
- G21C3/16—Details of the construction within the casing
-
- 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
- G21C3/06—Casings; Jackets
-
- 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
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
1,271,644. Fuel elements. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. 30 July, 1969 [24 July, 1968], No. 35399/68. Heading G6C. A nuclear fuel sheath has, in cross-section, an internal periphery generally in the shape of a closed three-sided figure having equilateral curved sides such that at least preliminary growth of the fuel housed within the sheath is accommodated by change of shape of the sheath without significant increase of its circumferential dimensions. The sheath may be metal or ceramic. In the embodiment shown in Fig. 2, where circular UO 2 fuel pellets 20 having a bore 22 are housed in a stainless steel sheath 21 in the form of an equilateral curved triangle, there will be unequal temperature distribution as between places 24 where the fuel is in contact with the sheath and places 25 where there is a gap between fuel and sheath. The effect of this inequality can be reduced by having the pellets segmented as indicated by the broken lines 26, or by having the bore 22 modified in shape as indicated by the broken lines 27, or both. The temperature variation around the sheath should preferably be less than 5%, and this could be controlled by modifying the sheath thickness and by means of finning around the sheath. In an alternative embodiment, the fuel is in the form of a non-circular UO 2 rod which has the same shape in cross-section as the area bounded by the internal periphery of the sheath (Fig. 1, not shown).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB35399/68A GB1271644A (en) | 1968-07-24 | 1968-07-24 | Improvements in nuclear fuel elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB35399/68A GB1271644A (en) | 1968-07-24 | 1968-07-24 | Improvements in nuclear fuel elements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1271644A true GB1271644A (en) | 1972-04-19 |
Family
ID=10377296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35399/68A Expired GB1271644A (en) | 1968-07-24 | 1968-07-24 | Improvements in nuclear fuel elements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1271644A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9406410B2 (en) | 2009-12-04 | 2016-08-02 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Nuclear fuel rod and method of manufacturing pellets for such a rod |
| FR3149720A1 (en) * | 2023-06-07 | 2024-12-13 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Nuclear reactor pencil |
-
1968
- 1968-07-24 GB GB35399/68A patent/GB1271644A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9406410B2 (en) | 2009-12-04 | 2016-08-02 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Nuclear fuel rod and method of manufacturing pellets for such a rod |
| FR3149720A1 (en) * | 2023-06-07 | 2024-12-13 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Nuclear reactor pencil |
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