GB1137939A - A process for the production of spherical graphite fuel elements - Google Patents
A process for the production of spherical graphite fuel elementsInfo
- Publication number
- GB1137939A GB1137939A GB55678/66A GB5567866A GB1137939A GB 1137939 A GB1137939 A GB 1137939A GB 55678/66 A GB55678/66 A GB 55678/66A GB 5567866 A GB5567866 A GB 5567866A GB 1137939 A GB1137939 A GB 1137939A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fuel
- particles
- pressing
- graphite
- core
- 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 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title abstract 5
- 229910002804 graphite Inorganic materials 0.000 title abstract 4
- 239000010439 graphite Substances 0.000 title abstract 4
- 239000002245 particle Substances 0.000 abstract 9
- 229910000831 Steel Inorganic materials 0.000 abstract 3
- 239000010959 steel Substances 0.000 abstract 3
- 239000011230 binding agent Substances 0.000 abstract 2
- 229920001971 elastomer Polymers 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 abstract 1
- 229910052776 Thorium Inorganic materials 0.000 abstract 1
- 229910052770 Uranium Inorganic materials 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 239000011261 inert gas Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000003758 nuclear fuel Substances 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 239000002574 poison Substances 0.000 abstract 1
- 231100000614 poison Toxicity 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 229920002379 silicone rubber Polymers 0.000 abstract 1
- 239000004945 silicone rubber Substances 0.000 abstract 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 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
- G21C3/64—Ceramic dispersion fuel, e.g. cermet
-
- 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
-
- 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)
- High Energy & Nuclear Physics (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Fuel Cell (AREA)
- Carbon And Carbon Compounds (AREA)
- Ceramic Products (AREA)
Abstract
1,137,939. Moulding nuclear fuel elements. NUKEM NUKLEAR-CHEMIE UND-METALLURGIE G.m.b.H. 13 Dec., 1966 [18 Dec., 1965], No. 55678/66. Heading B5A. Spherical graphite fuel elements for use in high-temperature nuclear reactors and comprising fuel particles mixed with graphite mass and an amount of binder, are cold pressed in a silicone rubber mould within a steel pressing die, which mould is cylindrical in exterior shape and divided into two symmetrical halves axially or radially and is provided with an ellipsoidal cavity which is deformed to spherical shape during cold pressing at high pressures of up to 7 tons/cm.2 The powder is consolidated to three to five times its original density and occluded air is removed by vent grooves provided in the rubber mould and steel die or by pressing in vacuo. To protect the fuel particles on the surface from damage, the fuel particle containing element is surrounded by a thin, particle free shell of the same graphite as the matrix of the fuel containing core which is initially pre-pressed semi.hydrostatically in rubber moulds at a low pressure of 20/kg./cm.<SP>2</SP> preferably to provide a grooved surface; the prepressed core is then enclosed within prepressed half shells of graphite powder. Improved heat dissipation from the fuel particles may be obtained with a fuel containing intermediate layer between a fuel free core and outer shell. After pressing, the binder is coked by heating the element at 1,000‹ C. in an inert gas followed by heating in vacuo at 1600 to 2,000‹ C. whereby oxidation resistance, impact strength and thermal conductivity are improved. The semi-hydrostatic pressing improves strength and isotropy over that obtained in a steel die. In addition to pure fuel particles (coated UC 2 - or UO 2 -particles), fertile material particles in which uranium is completely or partly replaced by thorium, or burnt up poison particles (with B 4 C for example) may be introduced.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEN0027788 | 1965-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1137939A true GB1137939A (en) | 1968-12-27 |
Family
ID=7344402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB55678/66A Expired GB1137939A (en) | 1965-12-18 | 1966-12-13 | A process for the production of spherical graphite fuel elements |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE691237A (en) |
| DE (1) | DE1646783C3 (en) |
| GB (1) | GB1137939A (en) |
| LU (1) | LU52598A1 (en) |
| NL (1) | NL152096B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4826652A (en) * | 1985-09-27 | 1989-05-02 | Hochtemperatur-Reaktorbau Gmbh | Low capacity nuclear reactor housed underground in the cavity of a cylindrical pressure vessel |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3435863A1 (en) * | 1984-09-29 | 1986-04-03 | Hobeg Hochtemperaturreaktor-Brennelement Gmbh, 6450 Hanau | METHOD FOR PRODUCING ISOTROPIC SPHERICAL BURNING OR ABSORBER ELEMENTS FOR HIGH TEMPERATURE REACTORS |
| DE3640494A1 (en) * | 1986-11-27 | 1988-06-09 | Hobeg Hochtemperaturreaktor | SPHERICAL FUEL ELEMENT FOR HIGH TEMPERATURE REACTORS AND METHOD FOR THE PRODUCTION THEREOF |
| DE3807853C1 (en) * | 1988-03-10 | 1989-08-10 | Nukem Gmbh, 6450 Hanau, De | |
| DE19837989C2 (en) * | 1998-08-21 | 2000-12-21 | Andrea Hrovat | Process for the production of fuel elements, absorber elements and fuel bodies for high-temperature reactors |
| DE10253205B4 (en) * | 2002-11-15 | 2005-09-15 | Ald Vacuum Technologies Ag | Automated production process for the production of spherical graphite, fuel and absorber elements for high-temperature nuclear reactors (HTR) |
-
1965
- 1965-12-18 DE DE1646783A patent/DE1646783C3/en not_active Expired
-
1966
- 1966-12-01 NL NL666616941A patent/NL152096B/en unknown
- 1966-12-13 GB GB55678/66A patent/GB1137939A/en not_active Expired
- 1966-12-14 LU LU52598A patent/LU52598A1/xx unknown
- 1966-12-14 BE BE691237A patent/BE691237A/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4826652A (en) * | 1985-09-27 | 1989-05-02 | Hochtemperatur-Reaktorbau Gmbh | Low capacity nuclear reactor housed underground in the cavity of a cylindrical pressure vessel |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1646783C3 (en) | 1974-08-15 |
| LU52598A1 (en) | 1967-02-14 |
| BE691237A (en) | 1967-05-16 |
| NL152096B (en) | 1977-01-17 |
| DE1646783A1 (en) | 1971-09-02 |
| DE1646783B2 (en) | 1974-01-03 |
| NL6616941A (en) | 1967-06-19 |
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