GB1255978A - Nuclear fuel element spacer retainer - Google Patents
Nuclear fuel element spacer retainerInfo
- Publication number
- GB1255978A GB1255978A GB48949/69A GB4894969A GB1255978A GB 1255978 A GB1255978 A GB 1255978A GB 48949/69 A GB48949/69 A GB 48949/69A GB 4894969 A GB4894969 A GB 4894969A GB 1255978 A GB1255978 A GB 1255978A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spacers
- tube
- fuel
- lugs
- bars
- 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
- 125000006850 spacer group Chemical group 0.000 title abstract 10
- 239000003758 nuclear fuel Substances 0.000 title abstract 3
- 239000000446 fuel Substances 0.000 abstract 5
- 101100188555 Arabidopsis thaliana OCT6 gene Proteins 0.000 abstract 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract 1
- 238000005253 cladding Methods 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000004992 fission Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 230000013011 mating Effects 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 abstract 1
- 229910052726 zirconium Inorganic materials 0.000 abstract 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
- G21C3/30—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
- G21C3/33—Supporting or hanging of elements in the bundle; Means forming part of the bundle for inserting it into, or removing it from, the core; Means for coupling adjacent bundles
- G21C3/332—Supports for spacer grids
-
- 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
- G21C3/33—Supporting or hanging of elements in the bundle; Means forming part of the bundle for inserting it into, or removing it from, the core; Means for coupling adjacent bundles
-
- 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
1,255,978. Fuel elements. GENERAL ELECTRIC CO. 6 Oct., 1969 [10 Oct., 1968], No. 48949/69. Heading G6C. For use with a nuclear reactor fuel assembly including a plurality of fuel elements and a plurality of axially-spaced fuel element spacers, a retainer for maintaining the spacers in axial position comprises an elongated tube 21 adapted to pass through aligned passages in the spacers 16, and a plurality of radially extending lugs 26 fixed to the tube 21 each at the axial position of a respective one of the spacers 16 for engaging and preventing axial displacement of the latter. The tube 21 is of stainless steel or zirconium and forms the cladding for a column of nuclear fuel 22 such as U or Pu (typically in the form of an oxide). The fuel is maintained in position by a resilient cup-shaped retainer 24 above which is a plenum 23 for the collection of fission product gases. The spacers are formed of upper and lower cross-laced divider bars 32(1), 32(2), 33(1) and 33(2). (Bars 32(2) and 33(2) are situated below bars 32(1) and 33(1) and are not shown in Fig. 4). A spring member 34 exerts a lateral force on the tube 21 to force it into engagement with a a pair of rigid members 36, 37. The tube 21 is inserted into the spacer 16 with the lugs 26 extending along diagonals of the spacer passages, and then rotated 45 degrees to bring the lugs 26 between the upper and lower divider bars 33(1), 33(2). To prevent further rotation of the tube 21, its lower end plug 18<SP>1</SP> is formed with an extension 38 of square cross-section. With the spacers 16 captured by the lugs 26, the tube 21 and spacers 16 are moved downwardly to insert the extension 38 into a mating cavity in the lower tie plate of the fuel assembly.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US76644468A | 1968-10-10 | 1968-10-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1255978A true GB1255978A (en) | 1971-12-08 |
Family
ID=25076439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB48949/69A Expired GB1255978A (en) | 1968-10-10 | 1969-10-06 | Nuclear fuel element spacer retainer |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1949211A1 (en) |
| FR (1) | FR2022254A1 (en) |
| GB (1) | GB1255978A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2155234A (en) * | 1984-02-28 | 1985-09-18 | Atomic Energy Authority Uk | Nuclear reactor fuel assemblies |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA941077A (en) * | 1971-01-21 | 1974-01-29 | Joseph R. Weiss | Nuclear fuel element with multiple fuel tubes |
| US4081324A (en) * | 1976-06-17 | 1978-03-28 | Exxon Nuclear Company Inc. | Spacer capture rod to spacer grid attachment device |
-
1969
- 1969-09-30 DE DE19691949211 patent/DE1949211A1/en active Pending
- 1969-10-06 GB GB48949/69A patent/GB1255978A/en not_active Expired
- 1969-10-09 FR FR6934615A patent/FR2022254A1/fr not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2155234A (en) * | 1984-02-28 | 1985-09-18 | Atomic Energy Authority Uk | Nuclear reactor fuel assemblies |
| US4663117A (en) * | 1984-02-28 | 1987-05-05 | Secretary of State for United Kingdom Atomic Energy Authority | Nuclear reactor fuel assemblies |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2022254A1 (en) | 1970-07-31 |
| DE1949211A1 (en) | 1970-08-06 |
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