GB1250687A - - Google Patents
Info
- Publication number
- GB1250687A GB1250687A GB1250687DA GB1250687A GB 1250687 A GB1250687 A GB 1250687A GB 1250687D A GB1250687D A GB 1250687DA GB 1250687 A GB1250687 A GB 1250687A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fuel
- suspension
- alloy
- barrier
- nitrocellulose
- 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 10
- 230000004888 barrier function Effects 0.000 abstract 5
- 239000000020 Nitrocellulose Substances 0.000 abstract 4
- 238000009792 diffusion process Methods 0.000 abstract 4
- 229920001220 nitrocellulos Polymers 0.000 abstract 4
- 239000000725 suspension Substances 0.000 abstract 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 3
- 229910002804 graphite Inorganic materials 0.000 abstract 3
- 239000010439 graphite Substances 0.000 abstract 3
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 abstract 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 abstract 1
- 229910000881 Cu alloy Inorganic materials 0.000 abstract 1
- 229910000861 Mg alloy Inorganic materials 0.000 abstract 1
- 229910000711 U alloy Inorganic materials 0.000 abstract 1
- 229910001093 Zr alloy Inorganic materials 0.000 abstract 1
- 238000007605 air drying Methods 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 230000004992 fission Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000002904 solvent 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
- G21C3/02—Fuel elements
- G21C3/04—Constructional details
- G21C3/16—Details of the construction within the casing
- G21C3/20—Details of the construction within the casing with coating on fuel or on inside of casing; with non-active interlayer between casing and active material with multiple casings or multiple active layers
-
- 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)
- Carbon And Carbon Compounds (AREA)
Abstract
1,250,687. Fuel elements. COMMISSARIAT A L'ENERGIE ATOMIQUE. 2 Oct., 1969 [7 Oct., 1968], No. 48444/69. Heading G6C. A fuel element can is provided with a diffusion barrier consisting of a suspension of graphite in nitrocellulose by applying a suspension of graphite in a nitrocellulose solution to that surface of the can which is intended to come into contact with the fuel, and heating the can so coated to a temperature high enough to eliminate the nitrocellulose solvent. The fuel may be U or U-alloy in a can of Mg or Mg-alloy, or a U-oxide based ceramic fuel in a can of Zr or Zr-alloy. The barrier serves to prevent diffusion of Pu and fission products which form during irradiation of the fuel through the can at operating temperatures. In the case of U-oxide fuel, the barrier also prevents diffusion of O 2 from the fuel into the can. In a particular example, a suspension was prepared from 150 g. colloidal graphite/litre of a solution containing 45 c.c. nitrocellulose, 25 c.c. butyl alcohol and 930 c.c. butyl acetate. This suspension was used to coat the interior of a Zr-1À5 wt. per cent Cu alloy fuel can by being passed through the can four times, each followed by air-drying. The can coated in this way was heated in a vacuum of 10<SP>-5</SP> Torr at 400 C. for 2 hours. This process gave a barrier having a total thickness of 15 microns. The diffusion barrier may alternatively be deposited on the outer surface of the fuel.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR169029 | 1968-10-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1250687A true GB1250687A (en) | 1971-10-20 |
Family
ID=8655370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1250687D Expired GB1250687A (en) | 1968-10-07 | 1969-10-02 |
Country Status (3)
| Country | Link |
|---|---|
| ES (1) | ES372004A1 (en) |
| FR (1) | FR1586737A (en) |
| GB (1) | GB1250687A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5805655A (en) * | 1997-04-10 | 1998-09-08 | Atomic Energy Of Canada Limited | Protective coating to reduce stress corrosion cracking in zirconium alloy sheathing |
-
1968
- 1968-10-07 FR FR169029A patent/FR1586737A/fr not_active Expired
-
1969
- 1969-09-29 ES ES372004A patent/ES372004A1/en not_active Expired
- 1969-10-02 GB GB1250687D patent/GB1250687A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES372004A1 (en) | 1973-03-16 |
| FR1586737A (en) | 1970-02-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| 435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |