GB1265974A - - Google Patents
Info
- Publication number
- GB1265974A GB1265974A GB6012268A GB1265974DA GB1265974A GB 1265974 A GB1265974 A GB 1265974A GB 6012268 A GB6012268 A GB 6012268A GB 1265974D A GB1265974D A GB 1265974DA GB 1265974 A GB1265974 A GB 1265974A
- Authority
- GB
- United Kingdom
- Prior art keywords
- particles
- graphite
- fuel
- agglomerate
- per cent
- 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
- 239000002245 particle Substances 0.000 abstract 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 5
- 239000000446 fuel Substances 0.000 abstract 5
- 229910002804 graphite Inorganic materials 0.000 abstract 5
- 239000010439 graphite Substances 0.000 abstract 5
- 238000010438 heat treatment Methods 0.000 abstract 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- 239000004698 Polyethylene Substances 0.000 abstract 2
- 229910052770 Uranium Inorganic materials 0.000 abstract 2
- -1 polyethylene Polymers 0.000 abstract 2
- 229920000573 polyethylene Polymers 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 229920005989 resin Polymers 0.000 abstract 2
- 239000011347 resin Substances 0.000 abstract 2
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 abstract 2
- 229910052786 argon Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000001427 coherent effect Effects 0.000 abstract 1
- 238000005336 cracking Methods 0.000 abstract 1
- 238000005485 electric heating Methods 0.000 abstract 1
- 230000004992 fission Effects 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000003758 nuclear fuel Substances 0.000 abstract 1
- 239000002296 pyrolytic carbon Substances 0.000 abstract 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract 1
- 229910010271 silicon carbide Inorganic materials 0.000 abstract 1
- 229920003002 synthetic resin Polymers 0.000 abstract 1
- 239000000057 synthetic resin Substances 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
- G21C3/42—Selection of substances for use as reactor fuel
- G21C3/58—Solid reactor fuel Pellets made of fissile material
- G21C3/62—Ceramic fuel
- G21C3/626—Coated fuel particles
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C21/00—Apparatus or processes specially adapted to the manufacture of reactors or parts thereof
- G21C21/02—Manufacture of fuel elements or breeder elements contained in non-active casings
- G21C21/04—Manufacture of fuel elements or breeder elements contained in non-active casings by vibrational compaction or tamping of fuel in the jacket
-
- 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
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
1,265,974. Fuel elements. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. 4 Dec., 1969 [18 Dec., 1968], No. 60122/68. Addition to 1,195,206. Heading G6C. An agglomerate of nuclear fuel particles, each particle of which bears a fission product retentive coating, is formed by applying an overcoating of a powder composed of between 40 and 60 wt. per cent synthetic resin powder and between 60 and 40 wt. per cent graphite powder, vibrocompacting the overcoated particles into a mould cavity, and maintaining the vibration whilst zone heating the particles by causing a thermal front to pass through the cavity. The mould cavity may be formed by a blind hole in an elongate graphite member which constitutes a container for the agglomerate after moulding. In an example, the fuel had a kernel composed of UO 2 /C-10 in which the uranium contained 39 wt. per cent U-235, the entire uranium content of the coated particles being 21À1 wt. per cent. Fuel kernels of this composition were coated with several layers of pyrolytic carbon and silicon carbide in known manner. The mould cavity formed in a graphite member was cylindrical with spaced inner and outer cylindrical walls. A sleeve of polyethylene film was secured around the inner cylindrical wall and the overcoated particles were vibration filled into the annular cavity. An annular electric heating element was placed around the graphite member and moved upwardly throughout the length of the member which at the same time was vibrated. Loss of volume which occurred during the settling of the fuel particles was made good. Resin/ graphite bonds were formed between the compacted fuel particles which were agglomerated into a coherent mass, and the mass was heated to 800 C. in argon to carbonize the resin which had been cured during the zone heating process. The agglomerate was then heated in situ in the graphite at 1800 C. in vacuo. The presence of the polyethylene film, which carbonizes during heat treatment, allows the annular agglomerate to shrink radially without cracking longitudinally.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6012268 | 1968-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1265974A true GB1265974A (en) | 1972-03-08 |
Family
ID=10485049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6012268A Expired GB1265974A (en) | 1968-12-18 | 1968-12-18 |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH493069A (en) |
| GB (1) | GB1265974A (en) |
-
1968
- 1968-12-18 GB GB6012268A patent/GB1265974A/en not_active Expired
-
1969
- 1969-12-17 CH CH1868969A patent/CH493069A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CH493069A (en) | 1970-06-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |