Abstract: Ozone generating apparatus adapted for quick installation into existing structures includes a plurality of housings adapted to be coupled together in at least two different relative orientations to permit adaptation of the ozone generation apparatus to the relative direction of air flow through an air handling conduit, with the housing containing ozone generating plates projecting rearwardly from the back surface of the housing containing the power and control circuitry for projection through an opening in the air handling conduit to a position wholly within the air handling conduit. The apparatus also includes ozone generating and air moving elements enclosed within a generally rectilinear housing having a closed top, four side walls depending from the top and terminating in a coplanar lower edge defining an open bottom, the lower edge being sized to be supported upon rails forming a grid work of a conventional suspended ceiling.

Abstract: An enclosed sanitizing cabinet for exposing eyewear articles to ultraviolet radiation from a fluorescent ultraviolet lamp which preferably extends substantially the entire height of the cabinet. The cabinet contains shelf-forming rod members spaced and configured to support eyewear articles in such manner that the surfaces of said articles which contact a user's skin in use are exposed to ultraviolet radiation. Interior surfaces of the cabinet are of a nature and formed of materials so as to reflect ultraviolet radiation to all articles therein and to minimize the differential in radiation exposure between articles adjacent and more remote from the radiation source.

Abstract: The tubular wall (1) of the irradiated component is machined on its upper annular surface, with chips (44) being formed by the use of a metal working machine (30) bearing on this upper surface and moving in rotation about the axis (6) of the wall (1) of the component. The chips (44) formed by the metal working machine (30), e.g., a milling head, which moves in the vertical direction and downwards, are collected and cleared away continuously during the progress of the machining in the axial direction (6) of the wall (1) of the component. The device is fastened to the upper part of the tubular casing (1), arms (7a, 7b) equipped with jacks allowing the device (4) to be flanged to the wall (1) of the component, and bearing devices (12) comprising arms (13) being mounted pivotably about a horizontal axis between a low bearing position and a high withdrawal position (13'). The bearing arms (13) change from their low position to their high position at the moment when the machining tool (31) passes.

Abstract: A method of forming a phase-separated composite material which utilizes sputtering in a thermal gradient at relatively high sputtering pressures generally above about 0.1 Torr sufficient to produce nanoscale particles which are embedded in a continuous phase matrix produced by normal sputtering. This method avoids the alloying and/or compound formation which prevents preparation of phase-separated composites by conventional co-sputtering, and the invention thus enables particulate composites to be formed from entirely new classes of materials. Microhardness testing shows that the phase-separated composites produced by the present invention have an increased hardness compared to the pure matrix material.

Abstract: There is disclosed an insoluble tannin preparation process, in which a tannin is first dissolved in an aldehyde aqueous solution. Then, ammonia is added to the solution to produce a precipitate, and the resulting precipitate is subjected to aging. The insoluble tannin thus prepared is employed to treat a waste liquid. Furthermore, there is disclosed an adsorption process in which a tannin is first dissolved in a solution containing a material to be adsorbed. Thereafter, an aldehyde is added to the solution to produce a precipitate having tannin as a principal constituent. The material to be adsorbed is adsorbed to this precipitate.

Abstract: Neutron absorbing refractory B.sub.4 C--Gd and Gd.sub.2 O.sub.3 --Gd cermets, B.sub.4 C--Gd and Gd.sub.2 O.sub.3 --Gd metal-matrix composites, and B.sub.4 C--Gd.sub.2 O.sub.3 ceramic-ceramic composites can be manufactured by applying fundamental thermodynamic and kinetic guidelines as processing principals.Three steps are involved in the fabrication of these new compositions of matter. First, the starting materials are consolidated into a compacted porous green body. Next, the green body is densified using the appropriate method depending on the class of material sought: cermet, metal-matrix composite, or ceramic-ceramic composite. Finally, either during the densification process or by subsequent heat treatment, new phase evolution is obtained via interfacial chemical reactions occurring in the microstructures.The existence of a new phase has been identified in B.sub.4 C--Gd and B.sub.4 C--Gd.sub.2 O.sub.3 composites.

Abstract: Hazardous radioactive waste is compacted and cast into safely handled monolithic castings having a radiation barrier wall completely enclosing the radioactive waste by centrifugal casting processes in which the barrier wall may be either a pre-formed shell transported to the jobsite or it may be formed by biaxial centrifugal casting and curing of the barrier wall in a mold. When a pre-formed shell is used, means are provided for thickening the radiation barrier if necessary by biaxial casting of additional barrier material inside of the shell. Castable radioactive material is cast inside the barrier wall before removal of the casting mold from the finished cast monolith. The cast monolith is supported for rotation as the mold is removed therefrom so that additional impact resisting and radiation barrier material can also easily be applied to the exterior surface monolith if radiation leakage exceeds tolerance levels.

Abstract: An apparatus for inspection of a reactor vessel includes trolley supporting an axillay extending support mast and extension mast. The support mast has a tilting device to adjust the angle between the support mast and vessel wall to allow the extension mast to be accessible to lower portions of the reactor vessel. The lower part of the extension mast is connected to a rack having a horizontal trolley capable of tangential movement relative to the reactor vessel wall. The horizontal trolley also is connected to a probe position trolley enabling a probe holder to move tangentially relative to the horizontal trolley. The apparatus enables the probes to move radially and axially for greater access to positions of the reactor vessel wall.

Abstract: A method and a generator for separating daughter radioisotope from a stock solution containing the daughter radioisotope and its parent are provided. The generator is provided with a glass adsorbent which preferentially adsorbs daughter radioisotope relative to the parent radioisotope and circulation means for withdrawing the stock solution from a reservoir, contacting the solution with the glass adsorbent to adsorb the daughter radioisotope and returning the parent radioisotope-enriched solution to the reservoir. In the process stock solution containing daughter radioisotope having a predetermined pH is contacted with the glass adsorbent to selectively adsorb the daughter radioisotope thereon and the daughter radioisotope is eluted with an eluant at a second predetermined pH. The process also includes a step of washing the glass adsorbent with a wash solution at the first predetermined pH to remove traces of the parent radioisotope from the adsorbent prior to eluting the daughter radioiotope.

Abstract: This invention discloses an ozone generator having a simple structure and little mechanical trouble, whereby ozone gas is generated directly in water or stagnant solutions having a high electric conductivity without any blower or bubble generating device, including one or more pairs of electrodes being submerged in liquids, the electrodes being made with metals resistant to oxidation such as platinum, the shape of said electrodes being formed in a strip line type and on an insulator substrate, the spacing between said electrodes being set to be of 0.02 to 1 mm, a square wave voltage with positive and negative pulses are supplied to said electrodes, thereby build-up of impurity in liquids to said electrodes being prevented, thus high concentration of ozone O.sub.3 generated effectively by combining O with O.sub.

Abstract: A method for recovering plutonium and other metals from materials by leaching comprising the steps of incinerating the materials to form a porous matrix as the residue of incineration, immersing the matrix into acid in a microwave-transparent pressure vessel, sealing the pressure vessel, and applying microwaves so that the temperature and the pressure in the pressure vessel increase. The acid for recovering plutonium can be a mixture of HBF.sub.4 and HNO.sub.3 and preferably the pressure is increased to at least 100 PSI and the temperature to at least 200.degree. C. The porous material can be pulverized before immersion to further increase the leach rate.

Abstract: The particle retaining device comprises a plurality of tubes (18) parallel to fuel rods (14) of the fuel assembly, in all gaps between adjacent fuel rods (14) and throughout the length of a zone located between the upper part of a bottom nozzle (2) and the lower part of the spacer grid which is closest to the bottom nozzle (2).

Abstract: The invention provides a new high temperature isotopic exchange fuel processing loop for tritium recovery in which tritium is exchanged out of impurities such as tritiated ammonia, methane and water by swamping with H.sub.2 and isotopically equilibrating the mixture in a high temperature reactor. Downstream of the reactor is a Pd/Ag permeator for separation of the hydrogen from the impurities, the separated hydrogen being sent to an isotope separation system for tritium recovery and the residual impurities being recycled. The process eliminates the need for impurity oxidation and electrolysis of DTO and does not rely on complicated catalytic decomposition reactions.

Abstract: A fuel bundle for a natural-circulation boiling-water reactor includes at least one coolant bypass tube which is at least partially open at both its top and bottom and extends about 2/3 of the bundle height. Water within the bypass tube remains liquid. As it exits the top of the bypass tubes, it merges with and "cools" the flow exterior to the tube. This arrangement reduces the pressure drop across the core, increasing coolant flow. In addition, the merging coolant helps improve heat transfer at the maximum heat flux levels within the core. Lateral holes through the bypass tube can further enhance with heat transfer distribution in the core. The reduced pressure drop in the core and the more uniform heat flux distribution both permit a reactor to operate at higher power ratings.

Abstract: A sealed neutron tube is set forth, containing a low-pressure gaseous deuterium-tritium mixture wherefrom an ion source (13) forms an ion beam which traverses an acceleration electrode (17) and is projected with high energy onto a target (16) in order to produce therein a fusion reaction which causes an emission of neutrons. In accordance with the invention, the ion source comprises a cold cathode with strictly electrostatic confinement of ionizing electrons; this is achieved by using an anode which is connected to a positive potential and which has a weakly collective surface facing the repulsive surface of the cathode cavity; the anode is arranged along the axis of the cavity in which it is arranged; said cavity constitutes the internal part of the cathode (15) in which the electrons (e.sub.2) which oscillate along very long paths in comparison with the dimensions of the cathode cavity ionize the gas and form an ionized gas wherefrom the ion beam (22) is extracted for standard ion optical device (17).

Abstract: A method of manufacturing cooled aerofoil blades in which blade parts are bonded together to provide complete blades. The blade parts are provided with mating surfaces which are simultaneously spark erosion machined to match the same prior to the blade parts being brazed together. Spark erosion machining is performed by maintaining the mating surfaces to be matched at a constant distance apart from each other and translating a tensioned wire electrode along a path passing mid-way between the mating surfaces.

Abstract: The present invention relates to a process for forming a composite strip material without any sintering step. The process includes blending a powdered high conductivity material such as powdered copper with a powdered low thermal expansion phase material such as a nickel-iron alloy, compacting the powders to form a green composite strip, heating the green strip to a hot rolling temperature and hot rolling the heated strip to a desired gauge. The heated strip is reduced less than about 45% to minimize the deformation of the low thermal expansion phase particles.

Abstract: The device comprises, in positions adjacent to the bearing surface (15) of the transportable container (1) on the fixed structure, a first member (16) for plugging the central channel (3) of the container (1), and a second member (17) for plugging the upper end of the well (18). These members are arranged inside a zone of contact of at least one o-ring seal (13) with the bearing surface (15). Each of the plugging members (16, 17) comprises a planar surface arranged, in its closing position, in the planar bearing surface (15) of the container or in the planar bearing surface of the fixed structure, respectively. At least one of the plugging members (16, 17) can move in the axial direction of the well (18) and of the central channel (3) of the container (1) and in a transverse direction perpendicular to the axial direction, between its closing position and its opening position.

Abstract: Water testing apparatus for monitoring circulating water coolant in service within a water cooled nuclear reactor system is disclosed. The invention is an improvement in such water testing apparatus and comprises filtering and a preconditioning of selected sample specimens of the coolant water with a pH adjustment for inhibiting unbalancing an equilibrium in solution of water coolant with ion solutes.

Abstract: A reactor for the treatment of a fluid with a substantially uniform dosage of light from a light-type light source, which comprises:a reactor housing forming an internal space comprising a fluid entry region, a fluid exit region,a central photochemical treatment region comprising a housing, a means for circumferentially distributing fluid flow radially towards and perpendicular to a line-type light source, and a fluid exit region, wherein the central photochemical treatment of the housing is rotationally symmetrical about a central axis andone or more line-type light sources mounted in the treatment region substantially at the central axis of the housing, the axis of the lamps being oriented parallel to the rotational axis of the treatment region housing.Methods are also provided using the circumferential distribution of fluid flow radially toward and perpendicular to the line-type light source.