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4216837 |
Diffraction optical weighing system
Weighing apparatus and method. A plurality of weigh members are moveable in sequence in a continuous path. Each weigh member receives an item to be weighed and includes a member which is moveable...
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4207922 |
Liquid sampling apparatus
The invention relates to an apparatus for sampling a liquid conveyed by a plurality of tubes. The sampling apparatus comprises a cylindrical enclosure with a vertical axis and a circular...
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4207723 |
Canning and inspection system for nuclear reactor fuel and reflector elements
A system is disclosed for canning, inspecting and transferring to a storage area fuel and reflector elements from a nuclear reactor, which system includes a transfer chute, environmental chamber,...
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4205304 |
Two dimensional light beam selection system
A position selection system comprising a map of a plurality of selection positions arranged in columns and rows with a normally unenergized light emitter and a respective normally disabled light...
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4204259 |
Automatic apparatus for continuous determination of boron and lithium concentrations
There is disclosed an apparatus including a calculating circuit for automatic determination of the boron concentration with the Li-ion concentration of the primary cooling water in a pressurized...
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4197652 |
Plane of reference device
A readily transportable device of relative light weight comprising a pair of tensioned guides for providing accurate and stable reference planes. An embodiment comprises a pair of rods or guides in...
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4195529 |
Device for moving the pickups of a flaw detection system through a pipeline
The disclosed device comprises two support end assemblies formed as cup-shaped sleeves adapted to be alternatingly engaged with the internal surface of a pipeline and interconnected by a motion...
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4196048 |
Corrosion measuring apparatus for radioactive components
Remotely manipulatable probe and apparatus for positioning a corrosion thickness sensing transducer over selected areas of the internal surface of a tubular radioactive component submerged in a...
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4195868 |
Tubular closure mechanism
A closure mechanism for closing a tubular opening and releasably securing articles therein is disclosed. The closure mechanism includes an axially movable actuator and a latching member which...
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4193502 |
Pellet dimension checker
A pellet dimension checker for determining the weight, length, and density of a pellet such as a nuclear fuel pellet. The checker comprises a rotatable arm for transferring a pellet from a pellet...
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4193291 |
Slow torsional wave densitometer
An ultrasonic densitometer for measuring the density or a density related parameter of a fluid has at least one transducer assembly that transmits and receives torsional waves guided in an axially...
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4172760 |
Neutron transmission testing apparatus and method
Apparatus for remotely testing radioactive components, for example, the components of a nuclear reactor, by determining and recording the neutron transmission characteristics of the component.
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4155808 |
Nuclear fuel rod inspection structure
A typical embodiment of the invention provides a fitting for stabilizing the burnable poison rods and the like within a nuclear reactor fuel element. An illustrative orifice rod assembly fitting is...
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4151773 |
Defect scriber
This disclosure describes a device for repeatably scribing a V-shaped scratch having sharply defined dimensions on the interior surface of a nuclear reactor fuel rod tube. A cutting tool having a...
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4142937 |
Device for providing a leak-tight penetration for electric cables through a reactor vault roof
The device for providing a cable penetration through the vault roof of a liquid sodium cooled fast reactor comprises a vertical tube closed at the top end by a flange-plate. Electric cables...
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4135089 |
Method of and apparatus for producing images for stereoscopic viewing of annihilation radiation sources
A method and apparatus for producing images which may be viewed in three dimensions by use of a stereoscope. In one embodiment, the object to be viewed containing annihilation radiation is placed...
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4134064 |
Method and apparatus for magnetically determining the Gd.sub.2 O.sub.3 content in UO.sub.2 fuel pellets while eliminating the effect of ferromagnetic impurities
A method and apparatus for magnetically determining the Gd 2 O 3 content in UO 2 fuel pellets is described. The alternating current susceptibility of fuel pellets within a zircalloy cladding is...
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4132618 |
Electrolytic device for marking metallic parts
At least one cylinder having electrically conductive portions and in tangential contact with a metallic tube is associated with a tank filled with electrolyte which is brought to the contact...
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4108719 |
Method and apparatus for gauging the radial spacing between fuel and surrounding cladding of a fuel rod for nuclear reactors
A fuel rod for nuclear reactors normally comprises an internal fuel core surrounded by an external cladding, a radial spacing being advantageously arranged between said core and cladding in order...
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4107535 |
X-ray apparatus utilizing rotary anode type X-ray tubes
In X-ray apparatus utilizing a rotary anode type X-ray tube in which a rotary anode provided with a target is rotated by a rotor driven by a stator on the outside of the tube, the stator windings...
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4107533 |
Apparatus for measuring a concentration of radioactivity
An apparatus for measuring concentration of radioactivity in a fluid circulating in a cooling system or a disposal system, etc. of a nuclear power plant (e.g. coolant), the apparatus having a...
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4103161 |
Composite transducer
A composite transducer for the measurement of a physical condition such as, but not limited to, temperature, pressure, liquid level, rate of flow, concentration of a constituent gas in a mixture of...
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4103233 |
Installation for the measuring of an essentially linear displacement
Installation for the measuring of an essentially linear displacement of a body, with a fixed coil and axial direction of which corresponds to the direction of the displacement to be measured, a rod...
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4098408 |
Automatic inspection system for nuclear fuel pellets or rods
An automatic inspection system is provided for determining surface defects on cylindrical objects such as nuclear fuel pellets or rods. The active element of the system is a compound ring having a...
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4094369 |
Monitoring device for nuclear reactor control rods
Weighing of each control rod and at least the moving portion of the control rod drive mechanism is carried out in continuous operation by means of an assembly comprising at least one strain gage...
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4092217 |
Fuel elements for nuclear reactors and method for testing the circulation of fuel elements in a core of a nuclear reactor
A method of testing the circulation of a bulk charge of fuel elements in the core of a pebble bed type of nuclear reactor comprises increasing the electrical conductivity of a number of fuel...
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4092541 |
Method for determining the activity concentration in waste gases for specific nuclides
Method of determining the activity concentration of the radio nuclides in waste gases of nuclear power plants by bleeding a part of the gas stream, compressing it to a high superatmospheric...
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4086132 |
Combined fuel assembly and thimble plug gripper for a nuclear reactor
A combined fuel assembly and thimble plug gripper for raising and lowering a fuel assembly into a nuclear reactor core, and for lifting and lowering a thimble plug assembly into the fuel assembly,...
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4070239 |
Ball check valve
A pressurized nuclear reactor having an instrument assembly sheathed in a metallic tube which is extended vertically upward into the reactor core by traversing a metallic guide tube which is welded...
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4067771 |
Nuclear reactor containment spray testing system
A method for periodic testing of a spray system in a nuclear reactor containment. The method includes injecting a gas into the spray system such that a temperature differential exists between the...
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4060716 |
Method and apparatus for automatic abnormal events monitor in operating plants
An apparatus and method for automatically monitoring dynamic signals, such as from vibration sensors, in an operating industrial or other plant to identify abnormal events, draw conclusions as to...
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4056972 |
Testing of inaccessable parts
It is often necessary to test by means of probes such as an ultra sonic probe or an eddy current probe, an inaccessable part of a heat exchanger within a shell. The apparatus according to the...
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4056434 |
Liquid metal cooled nuclear reactor scanning apparatus
A liquid metal cooled nuclear reactor has scanning means whereby ultra sound is transmitted between a transducer unit and objects in the pool of reactor coolant by way of a liquid wave guide. The...
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4051369 |
Method for inspecting nuclear fuel rod or irradiation capsule
A method for inspecting a nuclear fuel rod or irradiation capsule in which a heat transfer medium consisting of a liquid metal having a radioactive element uniformly admixed therewith is charged,...
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4050384 |
Tube inspection and servicing apparatus
An apparatus for insertion into a relatively long tube or conduit in order to inspect or perform operations on the interior thereof. The apparatus includes a device for performing an operation on...
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4048009 |
Method of and apparatus for checking the dimensions of the extensions of the control rods of a nuclear reactor
A method of checking the dimensions of the extensions of control rods of a nuclear reactor when the extensions are located in a cooling pit or fuel storage pool under a safe depth of water,...
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4046632 |
Nuclear reactor pressure vessel, multiple measuring line, bushing assembly
A bundle of individual measuring lines extends through the cover of a reactor pressure vessel, the bundle extending into a tubular mounting having a multiplicity of extending tubes through which...
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4047103 |
Eddy current position indicating apparatus for measuring displacements of core components of a liquid metal nuclear reactor
Apparatus for measuring displacements of core components of a liquid metal fast breeder reactor by means of an eddy current probe. The active portion of the probe is located within a dry thimble...
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4043755 |
Method and apparatus for determining uranium concentration in a moving stream
The concentration of uranium in a moving stream is determined by agglomerating background microbubbles out of the 6 to 10 micron size range, counting microbubbles in the stream which are about 6 to...
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4037103 |
Diameter measuring system for cylindrical objects
A system for the rapid and accurate measurement of the diameter of cylindrical objects and the like, such as nuclear reactor fuel pellets. The system essentially operates on the principle that when...
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4032240 |
Telescopic device
Telescopic device includes a plurality of elongated members disposed one within the other in a fully telescoping condition thereof and including an innermost member, an outermost member and at...
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4028811 |
Tubular gage for a liquid-metal-cooled fast breeder reactor
Spring-loaded plungers are arranged about a housing for insertion into a polygonal tube, one plunger for each side of the tube. Each plunger has a locking cam and sliding wedge mechanism which can...
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4020693 |
Acoustic transducer for nuclear reactor monitoring
A transducer to monitor a parameter and produce an acoustic signal from which the monitored parameter can be recovered. The transducer comprises a modified Galton whistle which emits a narrow band...
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4021669 |
Nuclear fuel microsphere gamma analyzer
A gamma analyzer system is provided for the analysis of nuclear fuel microspheres and other radioactive particles. The system consists of an analysis turntable with means for loading, in sequence,...
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4020329 |
Apparatus for radiation dose measurement
An apparatus for the direct measurement of total radiation dose from the difference in electrochemical potential between an unirradiated solution containing known concentrations of ceric and cerous...
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4012282 |
Multiple lead seal assembly for a liquid-metal-cooled fast-breeder nuclear reactor
A reusable multiple lead seal assembly provides leak-free passage of stainless-steel-clad instrument leads through the cover on the primary tank of a liquid-metal-cooled fast-breeder nuclear...
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4008455 |
Method of making self-calibrated displacement measurements
A method for monitoring the displacement of an object having an acoustically reflective surface at least partially submerged in an acoustically conductive medium. The reflective surface is designed...
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4007544 |
Constant load probe system for coordinate measurement machines
An arrangement for applying a constant load on the probe of a coordinate measurement machine to eliminate errors caused by operator hand pressure when the probe is manually moved into engagement...
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4007085 |
Nuclear reactor fuel elements
A nuclear reactor fuel element has within its protective sheath an insert whereby it may be uniquely identified. The insert bears an array of markings at spaced positions to produce a series of...
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3999423 |
Ultrasonic inspection apparatus
An ultrasonic apparatus for inspecting ferromagnetic surfaces is described. The apparatus comprises a central main frame having two support frames in hinged attachment to it with one support frame...
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