GB1350665A - Nuclear reactor fuel elements - Google Patents
Nuclear reactor fuel elementsInfo
- Publication number
- GB1350665A GB1350665A GB3200671A GB1350665DA GB1350665A GB 1350665 A GB1350665 A GB 1350665A GB 3200671 A GB3200671 A GB 3200671A GB 1350665D A GB1350665D A GB 1350665DA GB 1350665 A GB1350665 A GB 1350665A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- ferrules
- springs
- stops
- tiers
- 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
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
- G21C3/34—Spacer grids
- G21C3/356—Spacer grids being provided with fuel element supporting members
- G21C3/3566—Supporting members formed only of elements fixed on the strips
-
- 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)
- Fuel Cell (AREA)
Abstract
1350665 Fuel elements UNITED KINGDOM ATOMIC ENERGY AUTHORITY 20 June 1972 [7 July 1971] 32006/71 Heading G6C A cellular fuel assembly spacer grid provides for resilient bracing of fuel pins in the cells of the grid by bow spring locating members projecting inside the cells to hold the fuel pins against opposed rigid stops also projecting inside the cells, the grid comprising upper and lower tiers 2, 3 each formed from intersecting strip members 4, 5 and arranged parallel to one another but spaced apart. In one embodiment, shown in Fig. 2, the strip members 4 running in one direction across the grid are dimpled to form rigid locating stops 7 for the fuel pins, the fuel pins being held against the stops 7 by bow springs 8 extending between the grid tiers 2, 3. The bow springs 8 are located in oppositely acting pairs between adjacent fuel pins, and the springs in each pair are connected at their ends by ferrules 9 of flattened tubular form. The distance between the ferrules 9 in the relaxed condition of the springs 8 is greater than the spacing between the grid tiers 2, 3 and the springs 8 are compressible endwise to allow the ferrules to engage tongues 10 extending longitudinally from the facing inner edges of the strip members 5 in the grid tiers 2, 3. The ferrules 9 are formed with dimple-shaped back stops 11 which limit the movement of the fuel pins away from the stops 7 against the resilient action of the bow springs 8. In an alternative form of spacer grid (Fig. 4, not shown), the bow springs extend diagonally inwards from one corner of each cell and the bow springs of a group of four adjacent cells are connected to common boxshaped end ferrules. The locating members for the end ferrules are in the form of tongues positioned in pairs extending across the ferrules diagonally to form a cross at the points of intersection of the strip members of the two tiers.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3200671 | 1971-07-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1350665A true GB1350665A (en) | 1974-04-18 |
Family
ID=10331621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3200671A Expired GB1350665A (en) | 1971-07-07 | 1971-07-07 | Nuclear reactor fuel elements |
Country Status (11)
Country | Link |
---|---|
AU (1) | AU464042B2 (en) |
BE (1) | BE785940A (en) |
CH (1) | CH544379A (en) |
DE (1) | DE2233051C2 (en) |
ES (1) | ES404661A1 (en) |
FR (1) | FR2144846B1 (en) |
GB (1) | GB1350665A (en) |
IT (1) | IT964498B (en) |
NL (1) | NL174194C (en) |
SE (1) | SE373223B (en) |
ZA (1) | ZA724470B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4780273A (en) * | 1985-02-11 | 1988-10-25 | Kraftwerk Union Aktiengesellschaft | Nuclear reactor fuel assembly |
CN109935367A (en) * | 2017-12-19 | 2019-06-25 | 中国原子能科学研究院 | A kind of spacer grid of fuel assembly and fuel assembly of band buckle |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4077843A (en) * | 1976-05-21 | 1978-03-07 | Exxon Nuclear Company, Inc. | Nuclear reactor spring strip grid spacer |
FR2397042A1 (en) * | 1977-07-07 | 1979-02-02 | Commissariat Energie Atomique | SPACING GRID FOR A BUNDLE OF COMBUSTIBLE PENCILS IN A NUCLEAR REACTOR ASSEMBLY |
FR2426312A1 (en) * | 1978-05-19 | 1979-12-14 | Framatome Sa | CROSS-HOLDING DEVICE FOR THE FUEL BARS OF AN ASSEMBLY FOR NUCLEAR REACTOR |
DE2905661C2 (en) * | 1979-02-14 | 1982-06-24 | Kraftwerk Union AG, 4330 Mülheim | Spacers for the fuel rods combined to form a nuclear reactor fuel element |
US4389369A (en) * | 1980-08-11 | 1983-06-21 | Westinghouse Electric Corp. | Bi-metallic grid for a nuclear reactor fuel assembly |
FR2509078B1 (en) * | 1981-07-01 | 1987-10-16 | Pechiney Ugine Kuhlmann Uran | SPACING GRILLE FOR NUCLEAR REACTOR FUEL |
US5078961A (en) * | 1990-12-06 | 1992-01-07 | General Electric Company | Self locating springs for ferrule spacer |
CN109935370B (en) * | 2017-12-19 | 2024-07-19 | 中国原子能科学研究院 | Fuel assembly positioning grid with plug-in component and fuel assembly |
-
0
- BE BE785940D patent/BE785940A/en unknown
-
1971
- 1971-07-07 GB GB3200671A patent/GB1350665A/en not_active Expired
-
1972
- 1972-06-29 ZA ZA724470A patent/ZA724470B/en unknown
- 1972-07-06 FR FR7224493A patent/FR2144846B1/fr not_active Expired
- 1972-07-06 CH CH1014272A patent/CH544379A/en not_active IP Right Cessation
- 1972-07-06 AU AU44298/72A patent/AU464042B2/en not_active Expired
- 1972-07-06 SE SE7208945A patent/SE373223B/xx unknown
- 1972-07-06 DE DE2233051A patent/DE2233051C2/en not_active Expired
- 1972-07-06 IT IT69185/72A patent/IT964498B/en active
- 1972-07-07 ES ES404661A patent/ES404661A1/en not_active Expired
- 1972-07-07 NL NLAANVRAGE7209515,A patent/NL174194C/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4780273A (en) * | 1985-02-11 | 1988-10-25 | Kraftwerk Union Aktiengesellschaft | Nuclear reactor fuel assembly |
CN109935367A (en) * | 2017-12-19 | 2019-06-25 | 中国原子能科学研究院 | A kind of spacer grid of fuel assembly and fuel assembly of band buckle |
Also Published As
Publication number | Publication date |
---|---|
IT964498B (en) | 1974-01-21 |
ZA724470B (en) | 1973-09-26 |
CH544379A (en) | 1973-11-15 |
FR2144846A1 (en) | 1973-02-16 |
BE785940A (en) | 1973-01-08 |
NL7209515A (en) | 1973-01-09 |
SE373223B (en) | 1975-01-27 |
FR2144846B1 (en) | 1977-01-14 |
AU464042B2 (en) | 1975-08-14 |
DE2233051A1 (en) | 1973-01-25 |
NL174194C (en) | 1984-05-01 |
AU4429872A (en) | 1974-01-10 |
DE2233051C2 (en) | 1982-03-18 |
ES404661A1 (en) | 1977-11-01 |
NL174194B (en) | 1983-12-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |