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Barthels, H.; Fassbender, J.; Katscher, W.
Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.); Deutsches Patentamt, Muenchen (Germany, F.R.)1978
Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.); Deutsches Patentamt, Muenchen (Germany, F.R.)1978
AbstractAbstract
[en] The fuel body of a fuel element consists of fuel particles coated with pyrolytic carbon arranged between walls constructed as screens. The screens are formed as cones, double cones or as corrugated pipes and move between the pipe walls of the cylindrical fuel element from one side to the other and back. The particles are held in their position by graphite-felt, graphite fabric or felt or fabric made of SiO2. This stable geometric configuration guarantees that during operation changes of the power distribution in the reactor and reactivity jumps can be avoided. In research reactors even the emergency cooling becomes easier to be carried out. (orig.)
[de]
Bei dem BE ist der Brennstoffkoerper aus mit pyrolytischem Kohlenstoff beschichteten Partikeln zwischen als Siebe ausgebildeten Wandungen angeordnet. Die Siebe verlaufen kegel-, doppelkegel- oder wellrohrfoermig zwischen den Rohrwaenden des hohlzylinderfoermigen BE hin und her. Die Partikel werden ausserdem durch die Einlagerung von Graphitfilz, Graphitgewebe bzw. Gewebe und Filz aus SiO2 in unveraenderlicher Lage gehalten. Diese stabile geometrische Konfiguration gewaehrleistet, dass Aenderungen der Leistungsverteilung im Reaktor waehrend des Betriebs sowie Reaktivitaetsspruenge vermieden werden. Bei Forschungsreaktoren laesst sich sogar die Notkuehlung einfacher durchfuehren. (orig.)Original Title
Brennelement fuer Kernreaktoren
Primary Subject
Secondary Subject
Source
14 Dec 1978; 6 p; DE PATENT DOCUMENT 2063876/C/
Record Type
Patent
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Scott, J.L.
Oak Ridge National Lab., Tenn. (USA)1975
Oak Ridge National Lab., Tenn. (USA)1975
AbstractAbstract
[en] Research and development programs from 1945 to the present on coated-particle fuels are reviewed. 11 references. (U.S.)
Primary Subject
Source
1975; 7 p; American Nuclear Society meeting; New Orleans, Louisiana, USA; 8 Jun 1975
Record Type
Report
Literature Type
Conference
Report Number
Country of publication
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INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Original Title
Patent
Primary Subject
Source
2 Jul 1974; 6 p; US PATENT DOCUMENT 3,822,140
Record Type
Patent
Country of publication
Reference NumberReference Number
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Kofler, O.
Oesterreichische Studiengesellschaft fuer Atomenergie G.m.b.H., Vienna1980
Oesterreichische Studiengesellschaft fuer Atomenergie G.m.b.H., Vienna1980
AbstractAbstract
[en] Description of method and handling of fluidized beds with variable velocity of gas. Special use for coating fuel particles of reactors. (J.K.)
Original Title
Verfahren und Vorrichtung zum Betrieb einer Wirbelschicht
Primary Subject
Secondary Subject
Source
15 Apr 1980; 7 p; AT PATENT DOCUMENT 359613/B/; Available from the Oesterreichisches Patentamt, Kohlmarkt 8-10, A-1010 Vienna, Austria
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Morin, Claude.
Compagnie pour l'Etude et la Realisation de Combustibles Atomiques (CERCA), 26 - Romans-sur-Isere (France)1975
Compagnie pour l'Etude et la Realisation de Combustibles Atomiques (CERCA), 26 - Romans-sur-Isere (France)1975
AbstractAbstract
[en] This invention concerns a new type of fluidised bed reactor enabling the advantages of the two main known type to be combined, i.e. the homogeneous fluidised bed reactor and the central jet fluidised bed reactor. This new type of reactor can be built as large capacity units in which the working conditions can be strictly controlled and reproduced in each elementary particle. It is most particularly suitable in the preparation of a nucleus based on uranium oxide or carbide or thorium coated with one or more concentric coats of pyrolytic carbon and possibly silicon carbide
[fr]
L'invention concerne un nouveau type de reacteur a lit fluidise qui permet de combiner les avantages des 2 principaux types connus: les reacteurs a lit fluidise homogene et les reacteurs a lit fluidise a jet central. Ce nouveau type de reacteur peut etre realise sous forme d'unites de grande capacite dans lesquelles les conditions operatoires peuvent etre rigoureusement controlees et reproduites au niveau de chaque particule elementaire. Il convient particulierement bien a la preparation de particules de combustible nucleaire constituees par un noyau a base d'oxyde ou de carbure d'uranium ou de thorium revetu d'une ou plusieurs couches concentriques de carbone pyrolytique et eventuellement de carbure de siliciumOriginal Title
Nouveau type de reacteur fluidise
Primary Subject
Source
15 Apr 1975; 15 p; FR PATENT DOCUMENT 2313119/A/; Available from Institut National de la Propriete Industrielle, Paris (France)
Record Type
Patent
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INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Source
23 Oct 1974; 3 p; GB PATENT DOCUMENT 1371268/B/
Record Type
Patent
Country of publication
Reference NumberReference Number
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INIS IssueINIS Issue
AbstractAbstract
[en] A fuel element comprises highly enriched uranium bodies coated with a nonfissionable, corrosion resistant material. A plurality of these bodies are disposed in layers, with sodium filling the interstices therebetween. The entire assembly is enclosed in a fluid-tight container of nickel
Original Title
Patent
Primary Subject
Source
30 Mar 1976; 4 p; US PATENT DOCUMENT 3,947,320; PAT-APPL-346,084.
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Kronschnabel, H.
Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.)1983
Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.)1983
AbstractAbstract
[en] The device for removing the graphite shell of spherical HTR fuel elements has a pair of two parallel cutting discs. (orig./HP)
[de]
Die Vorrichtung zum Abtragen der Graphitschale von kugelfoermigen HTR-Brennelementen weist ein Paar von zwei im wesentlichen parallel zueinander angeordneten Abtragscheiben auf. (orig./HP)Original Title
Vorrichtung zum Abtragen der Aussenschale von Kugeln
Primary Subject
Secondary Subject
Source
7 Apr 1983; 13 Jun 1981; 9 p; DE PATENT DOCUMENT 3123551/C/; ?: 13 Jun 1981
Record Type
Patent
Country of publication
Reference NumberReference Number
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Price, Jeffery R.; Aykac, Deniz; Hunn, John D.; Kercher, Andrew K.
Oak Ridge National Laboratory (United States). Funding organisation: NE USDOE - Office of Nuclear Energy (United States)2007
Oak Ridge National Laboratory (United States). Funding organisation: NE USDOE - Office of Nuclear Energy (United States)2007
AbstractAbstract
[en] We describe new image analysis developments in support of the U.S. Department of Energy's (DOE) Advanced Gas Reactor (AGR) Fuel Development and Qualification Program. We previously reported a non-iterative, Bayesian approach for locating the boundaries of different particle layers in cross-sectional imagery. That method, however, had to be initialized by manual preprocessing where a user must select two points in each image, one indicating the particle center and the other indicating the first layer interface. Here, we describe a technique designed to eliminate the manual preprocessing and provide full automation. With a low resolution image, we use 'EdgeFlow' to approximate the layer boundaries with circular templates. Multiple snakes are initialized to these circles and deformed using a greedy Bayesian strategy that incorporates coupling terms as well as a priori information on the layer thicknesses and relative contrast. We show results indicating the effectiveness of the proposed method.
Primary Subject
Source
1 Jan 2007; vp; SPIE Electronic Imaging West Symposium, Machine Vision Applications in Industrial Inspection XV; San Jose, CA (United States); 28 Jan - 1 Feb 2007; AF3610200; NEAF260; AC05-00OR22725; Available from Oak Ridge National Laboratory, Oak Ridge, TN (US)
Record Type
Miscellaneous
Literature Type
Conference
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Source
American Nuclear Society meeting; San Francisco, CA, USA; 12 - 16 Nov 1979; CONF-791103--; Published in summary form only.
Record Type
Journal Article
Literature Type
Conference
Journal
Transactions of the American Nuclear Society; ISSN 0003-018X;
; v. 33 p. 304-305

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