High-sensitivity radioactive aerosol continuous monitor

An aerosol and monitor technology, applied in radiation measurement, X/γ/cosmic radiation measurement, instruments, etc., can solve the problems of serious interference of radon progeny measurement, high monitoring judgment limit, exceeding, etc.

Inactive Publication Date: 2015-02-18
63653 FORCES PLA
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Problems solved by technology

But in the environment with high radon concentration (radon concentration is hundreds of Bq / m 3 Above), such as mountain tunnels, underground warehouses and other places, the interference of radon progeny to the measurement is very serious. These commercial instruments have great influence on the 239 The monitoring judgment limit of Pu is very high, far exceeding its concentration limit

Method used

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  • High-sensitivity radioactive aerosol continuous monitor
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  • High-sensitivity radioactive aerosol continuous monitor

Examples

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Embodiment 1

[0035] Embodiment 1. A high-sensitivity radioactive aerosol continuous monitor (HS-CAM), as attached Figure 5 to attach Figure 7 As shown, the whole continuous monitor system is divided into two parts, the sampling module and the measurement module, wherein the upper part of the sampling and measurement module is installed in the upper support module 26, the sampling module activity unit 24 and the vacuum measurement module activity unit 25 It can reciprocate up and down and is installed in the lower support module 27; the passive paper feed roller 3 and the active paper feed roller 10 are respectively located on the left and right sides of the upper and lower support modules; the above four parts are fixed on the substrate board 16 with long screws; The filter paper roll 2 is wound on the passive paper feeding wheel 3 and the active paper feeding wheel 10, and passes through the gap between the upper support module 26 and the lower support module 27; the aerosol particles e...

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Abstract

The invention belongs to the technical field of designing and improving of environmental radiation monitoring equipment, and particularly relates to a high-sensitivity radioactive aerosol continuous monitor which comprises a sampling module and a measuring module. The upper halves of the sampling module and the measuring module are mounted in an upper-portion supporting module, a sampling module moving unit and a vacuumizing measuring module moving unit can be in up-down reciprocating motion and are mounted in a lower-portion supporting module, a U-019-300-100 particle injection type silicon detector and a vacuum adapter are mounted in a right-side vacuum chamber of the upper-portion supporting module, an annular silica sealing gasket is mounted above the sampling module moving unit and the vacuumizing measuring module moving unit and used for sealing, and a spring sleeves the outer side of each of the sampling module moving unit and the vacuumizing measuring module moving unit. The high-sensitivity radioactive aerosol continuous monitor is mainly used for the field of environmental monitoring.

Description

technical field [0001] The invention belongs to the technical field of design and improvement of environmental radiation monitoring equipment, in particular to a high-sensitivity radioactive aerosol continuous monitor. Background technique [0002] Long-lived artificial α-radioactive aerosols such as plutonium and uranium mainly cause internal radiation damage to the human body through inhalation. A common monitoring method is to use a radioactive aerosol continuous monitor (referred to as a continuous monitor) for continuous monitoring on site. The basic principle is: directly measure the aerosol sample without processing it. After the measurement is completed, its concentration is calculated according to the net count rate generated by the artificial radioactive aerosol, the collected air volume, and the detection efficiency. The whole process is completed automatically and the monitoring results are transmitted. Compared with sampling laboratory analysis, the advantage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/167
Inventor 不公告发明人
Owner 63653 FORCES PLA
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