Abstract:
Disclosed is a method of predicting, calculating, or analyzing the sintered density of uranium oxide (UOx) before uranium oxide is added in the pelletizing process during a process of manufacturing nuclear fuel, the method including measuring the chromaticity of ammonium diuranate using a spectrophotometer. The present invention provides a simple and highly reliable method of predicting the sintered density of uranium oxide (UOx), which overcomes the problem with a conventional technology where the sintered density of uranium oxide (UOx) can be analyzed only in a pellet state and a subsequent treatment process needs to be performed according to the analysis result.
Abstract:
A method for the quantification of 227Ac in a 223Ra composition comprising passing the composition through a first solid phase extraction column A, wherein said column comprises a thorium specific resin, passing the eluate of column A through a second solid phase extraction column B, wherein said column comprises an actinium specific resin and recovering the 227Ac absorbed onto the resin in column B and determining the amount thereof.
Abstract:
A system and process are disclosed that provide high accuracy and high precision destructive analysis measurements for isotope ratio determination of relative isotope abundance distributions in liquids, solids, and particulate samples. The invention utilizes a collinear probe beam to interrogate a laser ablated plume. This invention provides enhanced single-shot detection sensitivity approaching the femtogram range, and isotope ratios that can be determined at approximately 1% or better precision and accuracy (relative standard deviation).
Abstract:
The invention relates to the measurement of the tritium concentration of the water vapor in air and more particularly the subject of the invention is a method of automatically sampling tritium in the water vapor of air using a cold trap, of the type comprising a first step of condensing the water vapor of the air by cooling over a cold trap and a second step of recovering the ice formed in the previous step in the form of condensation liquid, characterized in that the air is contained in a sampling chamber (1) and is brought into contact with a cold trap (2, 4) which has been brought to a temperature below 0° C. and in that the liquid of the second step is obtained by warming the cold trap.
Abstract:
Methods and apparatus to assess current aspects of Quality Control useful for release of radioactive compounds for imaging, such as PET tracers as injectables, in an automated manner, without user interference, and in compliance with regulatory guidelines. The present method and system relates to an integrated automated quality control analysis of a substance utilizing a single sample injection for a plurality of inline quality control tests. A quantitative analysis of the sample via the plurality of quality control tests is conducted. A measurement value of each of the plurality of quality control parameters is determined and a comparison of each measurement value of the plurality of quality control parameters with a predetermined corresponding criterion value is made. A cumulative quality rating for the sample is determined and the validated sample is released based on the quality rating.
Abstract:
The system for automatic determination of the density of an object (100) comprises: an apparatus (2) to determine a significant dimension (x) of said object (100), an apparatus (30) to determine the intensity (I) of a photon beam attenuated by passing through said object (100), an acquisition, processing and analysis apparatus (200), means (70, 72, 80, 82, 84, 86, 88) of transporting the object (100), first means (74, 76, 78) of adjusting the position of the object (100), second means (90, 92, 94, 96, 98) of adjusting the position of the object (100). The method for using the system described above includes steps to calibrate components of apparatuses 2 and 30, and steps to actually determine the significant dimension of objects (100), that are done on each object (100) in said set of objects.
Abstract:
A wind deceleration and protective shroud that provides representative samples of ambient aerosols to an environmental continuous air monitor (ECAM) has a cylindrical enclosure mounted to an input on the continuous air monitor, the cylindrical enclosure having shrouded nozzles located radially about its periphery. Ambient air flows, often along with rainwater flows into the nozzles in a sampling flow generated by a pump in the continuous air monitor. The sampling flow of air creates a cyclonic flow in the enclosure that flows up through the cylindrical enclosure until the flow of air reaches the top of the cylindrical enclosure and then is directed downward to the continuous air monitor. A sloped platform located inside the cylindrical enclosure supports the nozzles and causes any moisture entering through the nozzle to drain out through the nozzles.
Abstract:
A simplified and easily operative flow control mechanism for an automatic pressure reducing equipment characterized in that a pressure detector detects such an inconvenient condition that a pressure of high pressure sample water is extremely reduced on an inlet line of a pressure reducing mechanism until the pressure reducing mechanism becomes inoperable, and that pressure-reduced sample water can bypass a flow control valve being provided on an outlet line of the pressure reducing mechanism by an automatic opening operation of an electromagnetic control valve so as to feed a predetermined amount of the sample water to an analysis system.
Abstract:
Sampling apparatus has a syphon with a longer arm (19) leading to a needle sampling station (20) from which extends a shorter arm (21) of the syphon. Liquid flow structure including a reverse flow diverter (10) is used to produce forward and reverse flow in the syphon and, on reverse flow, reduced pressure at the needle is produced by the head N of liquid, and during reverse flow some liquid enters a sampling bottle (24) through the needle (22). The needle extends into a T-piece and has a lower end at or below the mid line of the lateral leg of the T.
Abstract:
An apparatus for taking samples of a toxic or radioactive substance by inducing such substance into sample vessels, comprising a rotatable cylinder containing a recess movable between two positions for receiving a sample vessel; a needle head filling assembly disposed at the first position; a stripper located between the cylinder and the filling assembly for causing the filling assembly to disengage from the sample vessel during downward axial movement of the cylinder after filling; a housing which is open at the top, and a cover closing the top of the housing, with the cylinder, filling assembly and stripper being disposed in the housing, and the cover being provided with an opening above the needle filling assembly and dimensioned to permit passage of the filling assembly through the opening; a supply conduit for supplying substance to the filling assembly; and a support disc located in the housing and provided with a receiving bore for supporting the filling assembly while permitting the assembly to be removed from the receiving bore and withdrawn from the housing via the opening in the cover, the support disc having a fluid flow bore for placing the supply conduit in communication with the assembly.