Method of controlling mass fraction of uranium-235 isotope in gas phase of uranium hexafluoride and measuring system for implementation of the method

A uranium hexafluoride, mass fraction technology, applied in the field of nuclear material analysis, to prevent system inaccuracy and reduce the possibility of

Inactive Publication Date: 2006-07-05
ОТКРЫТОЕ АКЦИОНЕРНОЕ ОБЩЕСТВО «СИБИРСКИЙ ХИМИЧЕСКИЙ КОМБИНАТ»
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Problems solved by technology

Conceivably, the estimation of the uranium-235 mass fraction control in gas streams with stable isotope concentrations is sufficient, but given methods for technical control of cascade facilities and for t

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  • Method of controlling mass fraction of uranium-235 isotope in gas phase of uranium hexafluoride and measuring system for implementation of the method
  • Method of controlling mass fraction of uranium-235 isotope in gas phase of uranium hexafluoride and measuring system for implementation of the method
  • Method of controlling mass fraction of uranium-235 isotope in gas phase of uranium hexafluoride and measuring system for implementation of the method

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Embodiment Construction

[0054] The system includes a measurement chamber 1 with 3 pipes for the injection 2 and discharge of uranium hexafluoride from the gas collector 4 of the cascade plant with a restriction device 5; a detection module 6; corresponding temperature 7 with adapters 9 and 10 And pressure 8 sensors; controller 11 with discriminator 12-14, electric pulse counter 15-17, gamma spectrum analyzer 18 and timer 19; internal data line 20; data acquisition control and processing module 21; external interface network 22 ; The network 23 controlled by the cascade facility; the reference measuring device 25 (mass spectrometer) is connected to the network 23 through an external interface network.

[0055] In the control system (see FIG. 2), the controller 11 with blocks 12-19 is manufactured in the form of a single-board energy spectrum measuring device 26.

[0056] The control method is implemented as follows. The measurement chamber 1 is connected in parallel with the cross section of the gas colle...

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Abstract

The invention relates to nuclear material analysis by radiation methods and can be used for on-line monitoring uranium hexafluoride enrichment in isotopic dividing production. The uranium-235 gamma-radiation intensity, the temperature and the pressure of uranium hexafluoride are determined by means of averaged measurement results within identical time intervals when a current time is changed at a value equal to the time segment of the time interval. The calculated value of the uranium-235 mass fraction is referred to the current time in coincidence with the measuring time interval. The invention also discloses a control system of the method, wherein at least three descriminators and a timer are mounted in a controller, the output end of the descriminator is connected with the input end of a gamma emission detector, each output end of the descriminators is connected with the input end of single electrical impulse counter.

Description

Technical field [0001] The invention relates to nuclear material analysis by means of a radiation method, and can be used for on-line monitoring of uranium hexafluoride enrichment in a gas stream produced by isotopic separation of uranium. Background technique [0002] The term "uranium enrichment" generally refers to (defined as) the atomic fraction or mass fraction (concentration) of the uranium-235 isotope in a uranium isotope mixture expressed as a percentage. Small differences in definitions are irrelevant to this technical control. [0003] The method used to control uranium enrichment is based on the indirect method. In the indirect method, the ratio of the following previously known functions is based on a certain mass fraction C 5 Some associated value X i The measurement results to estimate the uranium-235 content: [0004] C 5 =f(X 1 , X 2 ,...) (1) [0005] Where X 1 , X 2 ,...Represent the recorded analysis signal and the physical constant or perma...

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Application Information

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IPC IPC(8): G21C17/06G01N23/00G01N23/06G01N33/00
CPCG01N23/066G01N33/0055G01N23/095
Inventor 安得雷・弗拉季斯拉沃维奇・阿布拉莫维奇维克托・瓦西里耶维奇・沃多拉佐斯基弗拉基米尔・叶夫根尼耶维奇・格罗霍夫迪米特里・弗拉基米尔维奇・多罗费耶夫朱里・维克托维奇・日林伊科博里斯・米哈伊洛维奇・济明维亚切斯拉夫・米哈伊洛维奇・伊柳科因弗拉基米尔・伊万诺维奇・马津弗拉基米尔・伊万诺维奇・罗施普金尼古拉・尼古拉耶维奇・西多连科朱里・博里斯维奇・托尔格那科夫
Owner ОТКРЫТОЕ АКЦИОНЕРНОЕ ОБЩЕСТВО «СИБИРСКИЙ ХИМИЧЕСКИЙ КОМБИНАТ»
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