A laboratory calibration device for tritium monitor

A technology for calibrating devices and monitoring instruments, applied in the field of tritium measurement, to achieve the effect of reducing volume, ensuring usage requirements, and improving independent controllability

Active Publication Date: 2021-11-02
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Radiation protection work on tritium is made more challenging by the high diffusivity of tritium in various materials

Method used

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  • A laboratory calibration device for tritium monitor

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Such as figure 1 As shown, a laboratory calibration device for a tritium monitor provided by the present invention is used to provide tritium-containing air for the calibration experiment of a tritium monitor, wherein a buffer tank 3, a circulation pump 4, a thermometer 5, and a pressure gauge 6 are included. , a vacuum pump 7, a standard tritium gas inlet 9, a dry air inlet 10 and a sealed annular loop 1 of the tritium-containing air outlet, the standard tritium gas entering from the standard tritium gas inlet 9 and the air entering from the dry air inlet 10 Under the action of the circulation pump 4, the dry air circulates in the circular loop 1 and mixes into tritium-containing air, and the tritium-containing air is transported to the container where the tritium monitor is located through the tritium-containing air output port. The concentrat...

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Abstract

The invention belongs to the technical field of tritium measurement, and in particular relates to a laboratory calibration device for a tritium monitor, which is used to provide tritium-containing air for the calibration experiment of the tritium monitor, including a circulating pump (4), a thermometer (5) and a pressure gauge (6) and the sealed annular loop (1) of standard tritium gas inlet (9) and dry air inlet (10) and tritium-containing air outlet, the standard tritium gas that enters from standard tritium gas inlet (9) and The dry air entering from the dry air inlet (10) is circulated in the circular loop (1) and mixed into tritium-containing air under the action of the circulation pump (4), and the tritium-containing air is sent to the tritium monitoring through the tritium-containing air output port the container in which the instrument is located. The invention makes the laboratory calibration operation of the tritium monitor more accurate and more convenient to use, provides a method for recovering tritium-containing air and exhaust gas with known activity, and makes it a research on the influencing factors of the laboratory calibration of the tritium monitor and the measurement of tritium in the ionization chamber an effective device.

Description

technical field [0001] The invention belongs to the technical field of tritium measurement, and in particular relates to a laboratory calibration device for a tritium monitor. Background technique [0002] Tritium is the only radioactive isotope of hydrogen. It is a synthetic substance with very weak radioactivity. It is a pure beta emitter with a maximum decay energy of 18.6keV and a half-life of 12.35a. Due to the high diffusivity of tritium in various materials, the work on radiation protection of tritium is more challenging. In addition, during the operation of nuclear power reactors (excluding special reactors for tritium production), due to nuclear fuel element fission, nuclear trifission and fission neutron activation reactions in control rods, in coolant and in related structural materials A certain amount of undesired tritium will be produced. For safe production, the level of tritium in the workplace of tritium workers must be limited. And in order to estimate t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T7/00
CPCG01T7/005
Inventor 李明徐利军
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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