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7311655 Method for manufacturing radioactive brachytherapy source material, brachytherapy source material and encapsulated radioactive brachytherapy source  
The invention relates to a method for producing a radioactive brachytherapy source material comprising indium-114m in radioactive equilibrium with indium-114 as main radioactive isotopes. A new...
7078581 Encapsulation of waste  
A ceramic waste immobilizing material for the encapsulation of high level radioactive waste (HLW), e.g. resulting from the reprocessing of irradiated nuclear fuel. The ceramic waste immobilising...
6625248 Process for the treatment of radioactive graphite  
A process for the treatment of radioactive graphite which includes the following steps: (i) reacting the radioactive graphite at a temperature in the range of from 250° C. to 900° C. with...
6190582 Controlled atmosphere sintering process for urania containing silica additive  
Improved method of sintering for the manufacture of nuclear fuel comprising a fissionable ceramic material including a silica containing additive. The method includes controlling the sintering...
5978431 Nuclear fuel pellets  
A method of producing mixed oxide fuel pellets. The method uses oxides of at least two fissile elements and includes a mixing, milling, spheroidising and sintering step to produce a fuel pellet...
5762831 Composite nuclear fuel material and method of manufacture of the material  
This invention relates to a composite nuclear fuel material and method of manufacture of said material. The purpose of the invention is a composite nuclear fuel material comprising a matrix inert...
5464571 Once-through nuclear reactor fuel compounds  
The improved oxide, once-through plutonium fuel compound that can be used for nuclear fission in currently operating light-water reactors and fast reactors has a composition in the range defined by...
5429775 Nuclear fuel pellets and method of manufacturing the same  
The present invention provides improved nuclear fuel pellets having high thermal conductivity for use in an LWR. This can be achieved by creating a continuous deposition phase of high-thermal...
5419886 Method for generation of finely divided reactive plutonium oxide powder  
A method of preparing active, sinterable, finely-divided plutonium oxide (PuO 2 ) powder from plutonium metal is disclosed. The process yields plutonium fissile material which can be easily blended...
5417943 Method for producing UO2 or (U/PU)02 powder  
A method for producing UO 2 or (U/Pu)O 2 powder includes obtaining ammonium uranyl carbonate or ammonium uranyl plutonyl carbonate by treating a starting oxide selected from the group consisting...
5268947 Nuclear fuel elements comprising a trap for fission products based on oxide  
A nuclear fuel element comprising sintered pellets based on uraniferous oxide which are surrounded by a metallic sheath and permitting trapping of the fission products which appear in the course of...
5257298 Nuclear fuel pellets having an aluminosilicate deposition phase  
This invention provides nuclear fuel pellets including fission substance of UO 2 or UO 2 having Gd 2 O 3 added thereto, the pellets comprising a satisfactory solid-solution state (homogeneous...
5255299 Method of manufacturing nuclear fuel pellets  
The present invention provides improved nuclear fuel pellets having high thermal conductivity for use in an LWR. This can be achieved by creating a continuous deposition phase of high-thermal...
5180527 Nuclear fuel pellets  
The present invention provides improved nuclear fuel pellets having high thermal conductivity for use in an LWR. This can be achieved by creating a continuous deposition phase of high-thermal...
5139709 Process for converting uranyl compounds to UO.sub.2 via ADU  
ADU (ammonium diuranate) is prepared in particle form directly by reacting ammonium gas with liquid droplets of atomized uranyl compound solutions. Generation of liquid filtrate is prevented by...
4997596 Fissionable nuclear fuel composition  
The disclosed invention consists of a ceramic form of fuel for a nuclear reactor comprising an oxide of a fissionable element and containing therein a consumable neutron absorbing agent. The...
4985183 UO2 pellet fabrication process  
There is disclosed a process for fabricating UO 2 pellets from highly active uranium dioxide powders, comprising the steps of (1) uniformly adding at least one pore-former agent in the range of...
4871479 Process for producing sintered mixed oxides which are soluble in nitric acid from solutions of nitrates  
A process is disclosed for producing sintered mixed metal oxide nuclear f pellets containing UO 2 and the oxide of at least one other fissionable or rare earth element M, the pellets being...
4869868 Nuclear fuel  
A particulate mixture of uranium dioxide and additive of magnesium silicate composition is formed into a compact and sintered to produce a nuclear fuel wherein the uranium dioxide grains have an...
4774051 Sintered nuclear fuel compact and method for its production  
A sintered nuclear fuel compact of UO 2 or the mixed oxides (U, Pu)O 2 and (U, Th)O 2 , with which reactivity losses in a nuclear reactor having relatively long fuel element cycles are avoided,...
4749529 Method of manufacturing sintered nuclear fuel bodies  
Sintered nuclear fuel bodies are manufactured by pressing a powder of UO 2 containing 1-20 percent by weight Gd 2 O 3 and up to 20 percent by weight U 3 O 8 into a pressed body and sintering...
4696769 Method and binder for the manufacture of nuclear fuel pellets, and the product  
A method and binder composition for prolonging the induced plasticity of a particulate ceramic material admixture comprising uranium dioxide and a fugitive binder, and product thereof, for...
4687601 Process for the preparation of pulverulent metallic oxides from metallic nitrates  
Process for the preparation of pulverulent metallic oxides with predetermined reactivity which is adjusted by the specific surface area, which are intended to be subjected to subsequent...
4671904 Method for producing oxidic sintered nuclear fuel bodies  
UO 2 base powder exhibiting any specific surface and crystallite diameter properties is mixed with rare earth (SE) oxide-containing powder, the particles of which exhibit at least in one surface...
4670198 Binder system for the manufacture of nuclear fuel pellets, and the method and product thereof  
A reproducible method and stable binder composition for preserving the induced plasticity of a particulate ceramic material admixture comprising uranium dioxide and a fugitive binder, and product...
4637900 Fabrication of high exposure nuclear fuel pellets  
A method is disclosed for making a fuel pellet for a nuclear reactor. A mixture is prepared of PuO 2 and UO 2 powders, where the mixture contains at least about 30% PuO 2 , and where at least...
4636352 Nuclear fuel rod with burnable plate and pellet-clad interaction fix  
An improved nuclear fuel rod comprising a tubular metallic cladding containing a plurality of nuclear fuel pellets has a plurality of ceramic wafers therein, each of which wafers being disposed...
4528130 Method for dissolving hard-to-dissolve thorium and/or plutonium oxides  
Method for dissolving hard-to-dissolve thorium and/or plutonium oxides, especially dioxides such as ThO 2 , PuO 2 or (U/Pu)O 2 mixed oxides by heating the oxides in a hermetically sealed vessel...
4512939 Method for manufacturing oxidic sintered nuclear fuel bodies  
Method for the manufacture of oxidic sintered nuclear fuel bodies by compacting UO 2 -starting powder or a mixture of UO 2 -and PuO 2 starting powder which contains up to 10% by weight...
4460522 Method of producing low density oxide fuel pellet  
A method of producing an oxide fuel pellet having a low density is provided which comprises adding a manganese compound to an oxide fuel powder selected from a group consisting of uranium dioxide...
4438050 Method for the manufacture of very dense oxidic nuclear fuel bodies  
Manufacture of very dense oxidic fuel bodies of UO 2 with rare earth oxides in which pressed blanks are subjected to sintering in an oxidizing atmosphere at relatively low temperature and are...
4432915 Method for producing nuclear fuel pellets, and product thereof  
A method for improving the physical properties of pressed bodies or pellets formed of particulate nuclear fuel material containing uranium dioxide. The green or unfired pressed bodies comprise a...
4427579 Method of producing fugitive binder-containing nuclear fuel material  
A nuclear fuel material green body of density from about 30 to 70% of theoretical density having tensile strenght and plasticity adequate to maintain the integrity of the body during processing...
4401608 Method for enlarging grain size of uranium oxide  
The grain size of particulate uranium oxides is increased and adjusted by the application thereto of hydrogen peroxide. The procedure is useful in the manufacture of nuclear reactor fuel from...
4389341 Fugitive binder-containing nuclear fuel material and method of production  
A nuclear fuel material green body of density from about 30 to 70% of theoretical density having tensile strength and plasticity adequate to maintain the integrity of the body during processing...
4383953 Method of improving the green strength of nuclear fuel pellets  
A process for imparting increased strength and physical durability in green bodies or pellets formed of particulate oxides of uranium, plutonium and the like in the production of pelletized...
4367184 Mixed uranium dicarbide and uranium dioxide microspheres and process of making same  
Nuclear fuel microspheres are made by sintering microspheres containing uranium dioxide and uncombined carbon in a 1 mole percent carbon monoxide/99 mole percent argon atmosphere at 1550° C. and...
4278560 Method for manufacturing gadolinium-containing nuclear fuels  
Mixed crystals containing uranium and gadolinium for conversion into nuclear fuels by introducing NH 3 , CO 2 and a uranyl salt solution containing dissolved gadolinium into a body of an aqueous...
4264540 Production of nuclear fuel pellets  
In the production of nuclear fuel pellets consisting essentially of oxides of uranium, or mixtures of these oxides with oxides of thorium or plutonium, by granulating the oxide powder, pressing the...
4006096 Method of making fissionable-fuel and fertile breeder materials for nuclear reactors  
Fissionable fuels and/or fertile breeder materials for nuclear reactors crised of fissionable or potentially fissionable materials having evenly distributed throughout certain metal oxides, such as...
3969477 Method of defluorinating uranium compositions in a calciner  
A method of dehalogenating a particulate composition in a calciner having a heating zone and a cooling zone is presented in which a dehalogenating atmosphere flows through the calciner, including a...
3917768 Sintered nuclear fuel and method of preparing same  
A method of preparing a nuclear fuel containing a consumable nuclear poison, uniformly distributed therein in the form of coated micro-spheres of between 10 and 2,000 microns diameter, consisting...
3872022 Sintering uranium oxide in the reaction products of hydrogen-carbon dioxide mixtures  
Compacted pellets of uranium oxide alone or containing one or more additives such as plutonium dioxide, gadolinium oxide, titanium dioxide, silica and alumina are heated to a temperature in the...
3867489 Method of producing an oxidation-resistant UO2 Fuel Body  
1. A method of forming a UO 2 fuel body resistive to oxidative attack, which comprises mixing UO 2 and a ceramic oxide of relatively low thermal neutron absorption cross section, adding to the...
3849329 METHOD FOR PRODUCING FUELED MODERATOR  
1. In a method for producing a high density fueled beryllia compact thermally stable at temperatures above 1,500° C, comprising the steps of dissolving about 4 percent by weight uranium chloride...
3728421 PREPARATION OF METAL OXIDE GRAINS  
A method is disclosed of preparing spherical particles of metal oxide hydrate and metal oxide hydrate with carbon, which particles can be converted into spherical oxide, and if carbon has been...
3723581 METHOD OF PRODUCING FUEL AND/OR BREEDER ELEMENTS FOR NUCLEAR REACTORS  
Coated particles used in making fuel and/or breeder elements are mixed with arbides and then heat hardened to form a compound member.
3663182 METAL OXIDE FABRICS  
The specification discloses fabrics that are composed of metal oxides such as zirconia, tantala, and other metal oxides which have not heretofore been available in the form of fabrics. The metal...
3518328 PROCESS FOR PREPARING MICROSPHERES OF URANIUM,PLUTONIUM OR THORIUM CARBIDE  
3510292 PROCESS FOR MAKING METAL/METAL OXIDE COMPOSITIONS  
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