Abstract: A reactor trip on turbine trip inhibit control system for a nuclear power generating system which utilizes steam bypass valves. The control system inhibits a normally automatic reactor trip on turbine trip when the bypass valves have the capability of bypassing enough steam to prevent reactor trip limits from being reached and/or to prevent opening of the secondary safety pressure valves. The control system generates a bypass valve capability signal which is continuously compared with the reactor power. If the capability is greater than the reactor power, then an inhibit signal is generated which prevents a turbine trip signal from tripping the nuclear reactor.

Abstract: A device producing reactions in the chemical to thermonuclear range and beyond. Physical principles entail pressures, kinetic temperatures, and electromagnetic field strengths obtainable from convergent electromagnetic energy. Process converges closed electromagnetic wave on reactants thereby heating, compressing and confining, and stressing reactants under focal electromagnetic intensities, inducing therein endothermic, equithermic, exothermic or combinations thereof reactions, all types furnishing energy useful externally and the exothermic type furnishing energy useful as feedback for generating new electromagnetic waves for process cyclic operation. Embodiment consists of closed shell lasing element enclosing reaction chamber, source of reactants, sink for reactant byproducts, and a source of initial energy for priming the lasing element.

Abstract: A vented nuclear fuel element having a plenum for accumulation of fission product gases and plug means for delaying the release of the fission product gases from the plenum, the plug means comprising a first porous body wettable with a liquid metal and a second porous body non-wettable with the liquid metal, the first porous body being impregnated with the liquid metal and in contact with the liquid metal.

Abstract: A core cooling system is disclosed for a nuclear reactor of the type utilizing a liquid coolant with a cover gas above free surfaces of the coolant. The disclosed system provides for a large inventory of reactor coolant and a balanced low pressure cover gas arrangement. A flow restricting device disposed within a reactor vessel achieves a pressure of the cover gas in the reactor vessel lower than the pressure of the reactor coolant in the vessel. The low gas pressure is maintained over all free surfaces of the coolant in the cooling system including a coolant reservoir tank. Reactor coolant stored in the reservoir tank allows for the large reactor coolant inventory provided by this invention.

Abstract: A reactor pressure vessel is supported at its bottom end by an inverted frusto-conical surface concentric with the axis of the vessel and fixed to its bottom, this surface slidably resting on an upright frusto-conical surface which is also concentric with the vessel's axis. Radial thermal movements of the reactor's bottom results in diameter changes in the conical surface fixed to its bottom so that this surface by cam action moves up and down on the other surface, and with a properly defined angularity, compensates for the vertical thermal expansion of the vessel which occurs simultaneously with its radial expansion.

Abstract: A heat-insulating lining for a fast reactor shield slab comprises a set of panels each consisting of a mat of superposed wire mesh or fabric elements enclosed within at least one metallic casing which is secured against the shield slab. The end walls of the casing are formed by sealing plates applied against the panels and the side walls are formed by at least two interengaged L-section members so arranged that one flange of each member covers the edge of one sealing plate whilst the other two flanges leave a narrow lateral gap which forms a capillary seal.

Abstract: Our invention contemplates a liquid developer which carries a toner which is tacky. This tackiness, however, is a transient one. After the latent electrostatic image is developed by our tacky toner, that is one that has adhesive properties, the developed image with the toner in tacky state is contacted with sheet material such as paper. The developed tacky toner image has greater affinity for the paper than it does for the photoconductive surface. We insure this by using a photoconductive surface which has less affinity for the tacky toner than the sheet material to which the image is to be transferred. After the image is transferred to the sheet material the toner quickly loses its tackiness and dries to a hard scuff-resistant surface.Our invention also contemplates a developer liquid which contains a toner which is non-sticky when first deposited then becomes sticky or tacky so that it can be transferred while tacky and loses its tackiness and remains firmly bonded to the surface to which it is transferred.

Abstract: A process and system for removing tritium, particularly from high temperature gas cooled atomic reactors (HTGR), is disclosed. Portions of the reactor coolant, which is permeated with the pervasive tritium atom, are processed to remove the tritium. Under conditions of elevated temperature and pressure, the reactor coolant is combined with gaseous oxygen, resulting in the formation of tritiated water vapor from the tritium in the reactor coolant and the gaseous oxygen. The tritiated water vapor and the remaining gaseous oxygen are then successively removed by fractional liquefaction steps. The reactor coolant is then re-circulated to the reactor.

Abstract: A gas-generating composition comprising an oxidizer, a non-metal, preferably organic, fuel component, and a metal fuel staple component of a particular size.

Abstract: The information stored on the dielectric target of a bistable storage tube is read out nondestructively employing a pulsed electron beam. The electron beam is turned on for a period having a duration less than necessary to change a given area of the target from one stable stored potential to another, while the period between pulsations is long enough so the tube's flood beam can return a given area to its original stored potential.