| Patent Number |
Title Of Patent |
Date Issued |
| 4620106 |
Impact absorber for containers for nuclear fuel and/or dangerous substances |
October 28, 1986 |
| This invention relates to an impact absorber for containers for nuclear fuels, radioactive products and/or dangerous chemical substances and used either for transporting or for storing said materials.Said impact absorber is constituted by two convex shells fixed to the ends of the contai |
| 4581197 |
Fission gas pressure measuring instrument and method |
April 8, 1986 |
| A device is disclosed for applying a head fitted with a measuring instrument to a nuclear fuel bar, the device comprising a casing containing a drilling tip and means for stopping the drilling tip as a bore has been formed through the bar plug and an instrument, such as a pressure ga |
| 4571315 |
Preparing ceramic material pellets |
February 18, 1986 |
| Ceramic pellets, which may have, or not, nuclear fuel materials embedded therein, are formed by first preparing a gel by precipitation of metallic salts from solutions of their compounds at a concentration of at least 10 grams per liter, said solutions being added dropwise to a coagulati |
| 4347200 |
Method of producing microspheres by vibrations |
August 31, 1982 |
| A method is disclosed for producing solid materials in form of microspheres or spherules for a number of applications, such as nuclear fuel, catalyst, fluid beds for fluidization and other like applications. An inert gas shield is provided to surround the droplets of liquid from which th |
| 4297174 |
Pyroelectrochemical process for reprocessing irradiated nuclear fuels |
October 27, 1981 |
| In a method for reprocessing irradiated nuclear fuels, the fuel to be reprocessed is dissolved in a fused-salt bath while absolute sulfuric acid is added dropwise to said bath, plutonium sulfate is thermally converted into the corresponding oxide, the uranium oxide is electrolytically |
| 4285645 |
Producing microspheres by vibrations |
August 25, 1981 |
| An apparatus is disclosed for producing solid materials in form of microspheres or spherules for a number of applications, such as nuclear fuel, catalyst, fluid beds for fluidization and other like applications. An inert gas shield is provided to surround the droplets of liquid from |
| 4202793 |
Production of microspheres of thorium oxide, uranium oxide and plutonium oxide and their mixture |
May 13, 1980 |
| A process for the production of microspheres of thorium oxide, uranium oxide or plutonium oxide and mixtures thereof, containing carbon. The microspheres are prepared by first forming an aqueous alkaline solution of a salt of said metals which will precipitate to a solid form in a co |
| 4092397 |
Pyrochemical separation of plutonium from irradiated nuclear fuels, by thermal decomposition in |
May 30, 1978 |
| In the recovery of plutonium from irradiated nuclear fuel elements especially those coming from fast nuclear reactors, the improvement consisting in that the spent nuclear fuel elements are subjected to the action of a molten nitrate bath (mixed nitrates of alkali metals or alkaline |
| 3993578 |
Process for controlling the geometrical properties of particles of ceramic materials |
November 23, 1976 |
| In the preparation of microspheres of nuclear fuel by feeding droplets of an aqueous solution of a salt of a metal constituting the nuclear fuel that is precipitated by a basic medium and a resin that increases in viscosity in the presence of an alkali into an aqueous alkaline solution |
| 3981960 |
Reprocessing method of caramic nuclear fuels in low-melting nitrate molten salts |
September 21, 1976 |
| Ceramic nuclear fuel is reprocessed through a method wherein the fuel is dispersed in a molten eutectic mixture of at least two alkali metal nitrates and heated to a temperature in the range between 200.degree.C and 300.degree.C. That heated mixture is then subjected to the action of a |
