GB1482788A - Nuclear reactors - Google Patents
Nuclear reactorsInfo
- Publication number
- GB1482788A GB1482788A GB54591/74A GB5459174A GB1482788A GB 1482788 A GB1482788 A GB 1482788A GB 54591/74 A GB54591/74 A GB 54591/74A GB 5459174 A GB5459174 A GB 5459174A GB 1482788 A GB1482788 A GB 1482788A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fuel
- water
- side surfaces
- casings
- fuel assembly
- 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
- 239000000446 fuel Substances 0.000 abstract 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 5
- 230000000712 assembly Effects 0.000 abstract 3
- 238000000429 assembly Methods 0.000 abstract 3
- 229910001093 Zr alloy Inorganic materials 0.000 abstract 1
- 230000032683 aging Effects 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000035882 stress Effects 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
- G21C3/324—Coats or envelopes for the bundles
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C5/00—Moderator or core structure; Selection of materials for use as moderator
- G21C5/02—Details
- G21C5/06—Means for locating or supporting fuel elements
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C5/00—Moderator or core structure; Selection of materials for use as moderator
- G21C5/14—Moderator or core structure; Selection of materials for use as moderator characterised by shape
- G21C5/16—Shape of its constituent parts
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
- G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
- G21C7/10—Construction of control elements
- G21C7/117—Clusters of control rods; Spider construction
-
- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
1482788 Reactors ASEA-ATOM AB 18 Dec 1974 [20 Dec 1973] 54591/74 Heading G6C A water-cooled reactor core comprises a plurality of fuel assemblies supported by vertical water tubes, each fuel assembly having a casing formed with a plurality of first side surfaces parallel to and in direct contact with similar side surfaces of a plurality of adjacent casings, and with second side surfaces which, together with similar side surfaces of other casings, define a plurality of cylindrical, vertical channels for control rods. In the Fig. 2 embodiment, each fuel assembly 4 of a boiling water reactor comprises twelve fuel rods 5 within a square section casing 15 having chamfered corners 18 which define channels 19, some of which serve as guide tubes for the control rod fingers 11 of a control member of the type shown in Fig. 5. The fuel assemblies 4 are arranged in groups of nine, each group being positioned on a common assembly supporting plate 6 (Fig. 4) which has apertures 7 at the top through which water is supplied from a water tube 8 to each of the nine fuel assemblies 4 of the group. Four assembly groups constitute one core module, and each module has one control member. Each control member has sisteen control rod fingers 11 attached to a yoke lying in a horizontal plane and supported by a central shaft 9. The yoke (Fig. 5) comprises four rings connected rigidly to each other and to the shaft 9, each ring surrounding a water tube 8 and being provided with two guide wheels 13 which engage the tube 8. In alternative embodiments, the fuel assembly casing are circular or made with alternately curved and plane cylindrical surfaces (Fig. 7, not shown), are of regular pentagonal crosssection (Fig. 8, not shown), or are of chamfered regular triangular or hexagonal cross-section (Figs. 9 and 10, not shown). The effect of the reduced width of the contact surface between adjoining fuel assembly casings is a reduction in the forced ageing, i.e. plastic deformation even at a relatively low mechanical stress and increasing with the passage of time, of the Zr alloy used for the fuel assembly casings under neutron irradiation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7317178A SE378930B (en) | 1973-12-20 | 1973-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1482788A true GB1482788A (en) | 1977-08-17 |
Family
ID=20319447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB54591/74A Expired GB1482788A (en) | 1973-12-20 | 1974-12-18 | Nuclear reactors |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5732359B2 (en) |
| FR (1) | FR2255679B1 (en) |
| GB (1) | GB1482788A (en) |
| IT (1) | IT1027111B (en) |
| SE (1) | SE378930B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4486384A (en) * | 1980-03-05 | 1984-12-04 | Kraftwerk Union Aktiengesellschaft | Fuel assembly for a nuclear reactor |
| US4526746A (en) * | 1981-05-04 | 1985-07-02 | Ab Asea-Atom | Fuel assembly having water passageway in channel wall |
| EP0036142B1 (en) * | 1980-03-17 | 1985-09-04 | Ab Asea-Atom | Bundle of fuel elements |
| US4585614A (en) * | 1980-11-05 | 1986-04-29 | Ab Asea-Atom | Fuel assembly for nuclear reactor |
| US4588550A (en) * | 1982-07-12 | 1986-05-13 | Aktiebolaget Asea-Atom | Fuel assembly for a boiling water reactor |
| US4609521A (en) * | 1981-12-04 | 1986-09-02 | Framatome & Cie | Complementary shutdown device for an undermoderated nuclear reactor |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5477892A (en) * | 1977-12-02 | 1979-06-21 | Toshiba Corp | Nuclear reactor |
| US4314885A (en) * | 1978-10-18 | 1982-02-09 | The Babcock & Wilcox Company | Industrial technique |
| US4798699A (en) * | 1984-07-26 | 1989-01-17 | Westinghouse Electric Corp. | Wear sleeve for a control rod end plug |
| FR2599884B1 (en) * | 1986-06-10 | 1988-10-07 | Fragema Framatome & Cogema | ADJUSTMENT GRAPPLE WITH REMOVABLE PENCILS FOR NUCLEAR FUEL ASSEMBLY |
-
1973
- 1973-12-20 SE SE7317178A patent/SE378930B/xx unknown
-
1974
- 1974-12-18 FR FR7441764A patent/FR2255679B1/fr not_active Expired
- 1974-12-18 IT IT70672/74A patent/IT1027111B/en active
- 1974-12-18 JP JP14553374A patent/JPS5732359B2/ja not_active Expired
- 1974-12-18 GB GB54591/74A patent/GB1482788A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4486384A (en) * | 1980-03-05 | 1984-12-04 | Kraftwerk Union Aktiengesellschaft | Fuel assembly for a nuclear reactor |
| EP0036142B1 (en) * | 1980-03-17 | 1985-09-04 | Ab Asea-Atom | Bundle of fuel elements |
| US4585614A (en) * | 1980-11-05 | 1986-04-29 | Ab Asea-Atom | Fuel assembly for nuclear reactor |
| US4526746A (en) * | 1981-05-04 | 1985-07-02 | Ab Asea-Atom | Fuel assembly having water passageway in channel wall |
| US4609521A (en) * | 1981-12-04 | 1986-09-02 | Framatome & Cie | Complementary shutdown device for an undermoderated nuclear reactor |
| US4588550A (en) * | 1982-07-12 | 1986-05-13 | Aktiebolaget Asea-Atom | Fuel assembly for a boiling water reactor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5732359B2 (en) | 1982-07-10 |
| DE2458016B2 (en) | 1976-10-07 |
| FR2255679B1 (en) | 1980-09-26 |
| JPS5094385A (en) | 1975-07-28 |
| DE2458016A1 (en) | 1975-06-26 |
| SE7317178L (en) | 1975-06-23 |
| SE378930B (en) | 1975-09-15 |
| IT1027111B (en) | 1978-11-20 |
| FR2255679A1 (en) | 1975-07-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |