GB1206116A - Improvements in or relating to fuel elements for nuclear reactors - Google Patents
Improvements in or relating to fuel elements for nuclear reactorsInfo
- Publication number
- GB1206116A GB1206116A GB50759/66A GB5075966A GB1206116A GB 1206116 A GB1206116 A GB 1206116A GB 50759/66 A GB50759/66 A GB 50759/66A GB 5075966 A GB5075966 A GB 5075966A GB 1206116 A GB1206116 A GB 1206116A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fuel
- sleeve
- ring
- sheath
- grid
- 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 title abstract 13
- 210000004027 cell Anatomy 0.000 abstract 7
- 239000008188 pellet Substances 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 210000003850 cellular structure Anatomy 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 239000002826 coolant Substances 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 abstract 1
- 238000003466 welding Methods 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
-
- 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
- G21C3/10—End closures ; Means for tight mounting therefor
-
- 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
-
- 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
- G21C3/348—Spacer grids formed of assembled non-intersecting 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
1,206,116. Fuel elements. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. 3 Nov., 1967 [11 Nov., 1966], No. 50759/66. Heading G6C. A fuel element comprises a cluster of fuel pins spaced and transversely located by transverse grids within an outer support sleeve, one of the grids being a support grid for supporting the fuel pins axially and being fabricated from a plurality of generally radical structural members attached to an outer support ring, a cellular structure for locating the ends of the fuel pins, comprising fuel pin cells joined by webs, being secured to and within the depth of the structural members. The support grid, shown in Fig. 3, has an outer support ring 5 which is held in engagement with a shoulder at the lower end of the outer graphite sleeve 1 by an inner sleeve 7 screwed at its lower end to the sleeve 1. The main structural members 19 of the support grid are joined by welding to the ring 5 and to a central ring 18. Fuel pin cells 20 are formed from bent strip material, edge on to coolant flow and thinner than the members 19, and spotwelded together and to the members 19 in a manner such that the latter divide the grid structure into units of equal numbers of cells. The width of the walls of the cells 20 is either equal to or less than the width of the members 19. The grid is prevented from rotating by engagement of three equi-spaced lugs 21 on the ring 5 in recesses 22 in the above-mentioned shoulder of the sleeve 1. A tube which extends the length of the element and which is carried by a ferrule secured within the ring 18 forms a guide for a fuel element lifting rod. Each fuel pin 35 (Fig. 4) comprises a stainless steel sheath 36 provided with circumferential or helical ribs and containing a stack of ceramic fuel (e.g. UO 2 ) dished-ended pellets 38. An insulating disc 39 at each end of the stack separates the pellets 38 from direct engagement with end caps 40 welded to the sheath. At the lower end of each fuel pin 35, a ferrule 41 is butt fusion welded at 42 to the respective end cap 40 and sheath 36, this serving for sealing of the end cap/sheath interface in addition to a seam weld 43. When positioned in the respective cell 20 of the grid, a shoulder 44 on the sheath 36 engages the top edge of the cell 20 and the lower end of the ferrule 41 is bent outwardly to engage the lower edge of the cell 20. The sleeve 1 has an outwardly chamfered spigot of reduced diameter at its lower end and an annular recess at its upper end with which the spigot of an adjacent fuel element can engage.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB50759/66A GB1206116A (en) | 1966-11-11 | 1966-11-11 | Improvements in or relating to fuel elements for nuclear reactors |
| DE19671614945 DE1614945A1 (en) | 1966-11-11 | 1967-11-10 | Fuel element for nuclear reactors |
| FR127839A FR1544351A (en) | 1966-11-11 | 1967-11-10 | Fuel cartridge for nuclear reactors |
| BE706376D BE706376A (en) | 1966-11-11 | 1967-11-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB50759/66A GB1206116A (en) | 1966-11-11 | 1966-11-11 | Improvements in or relating to fuel elements for nuclear reactors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1206116A true GB1206116A (en) | 1970-09-23 |
Family
ID=10457243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB50759/66A Expired GB1206116A (en) | 1966-11-11 | 1966-11-11 | Improvements in or relating to fuel elements for nuclear reactors |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE706376A (en) |
| DE (1) | DE1614945A1 (en) |
| GB (1) | GB1206116A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2133918A (en) * | 1983-01-18 | 1984-08-01 | Atomic Energy Authority Uk | Fuel sub-assemblies for nuclear reactors |
-
1966
- 1966-11-11 GB GB50759/66A patent/GB1206116A/en not_active Expired
-
1967
- 1967-11-10 BE BE706376D patent/BE706376A/xx unknown
- 1967-11-10 DE DE19671614945 patent/DE1614945A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2133918A (en) * | 1983-01-18 | 1984-08-01 | Atomic Energy Authority Uk | Fuel sub-assemblies for nuclear reactors |
Also Published As
| Publication number | Publication date |
|---|---|
| BE706376A (en) | 1968-05-10 |
| DE1614945A1 (en) | 1970-05-27 |
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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 |