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Aerosol continuous radiation monitoring device for nuclear power plant

A radiation monitoring and aerosol technology, applied in the field of nuclear power plant aerosol continuous radiation monitoring device, can solve problems such as inability to monitor aerosol radioactive substances, and achieve the effect of ensuring safety

Pending Publication Date: 2019-01-22
SHAANXI WEIFENG NUCLEAR ELECTRONICS +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, process exhaust gas
[0004] In the existing monitoring equipment, it is generally not possible to monitor aerosol radioactive substances

Method used

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  • Aerosol continuous radiation monitoring device for nuclear power plant
  • Aerosol continuous radiation monitoring device for nuclear power plant
  • Aerosol continuous radiation monitoring device for nuclear power plant

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, where the schematic embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0029] The aerosol monitoring device detects beta rays with an energy range of 80keV~3.0MeV, and the measurement range is 3.7×10-1Bq / m 3 ~3.7×103Bq / m 3 (normal range).

[0030] Aerosol detection devices use high-efficiency filter paper to sample radioactive aerosols in nuclear power plant stack exhaust streams. In this case, the radiation faced by the aerosol detector is very complicated, refer to Figure 5 as shown,

[0031] The radiation that aerosol detectors face are:

[0032] Natural and aerosol-derived gamma radiation from the detector's surroundings

[0033] Beta radiation from aerosols (including artificial Cs, Pu and Rn, Th daughters)

[0034] Alpha radiation from aerosols ...

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PUM

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Abstract

The invention provides an aerosol continuous radiation monitoring device for a nuclear power plant. The device comprises a shielding body, a detecting component disposed inside the shielding body, a filtering component disposed inside the shielding body and under the detecting component, and a circuit board and an ARM processing board disposed at the detecting component, wherein the detecting component comprises a PIPS semiconductor detector and a plastic scintillator detector, the filtering component comprises a filter housing, and the filter housing is provided with an inlet chamber, an exhaust chamber, a roll cassette, a cam, a paper pressing mechanism and a paper feeding motor. The aerosol continuous radiation monitoring device provided by the invention utilizes a PIPS semiconductor detector (passivated injection surface silicon detector) to detect alpha and beta radiations in the aerosol, and detects the background gamma rays presented in the environment through a large plastic scintillator detector.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant waste gas monitoring, in particular to a nuclear power plant aerosol continuous radiation monitoring device. Background technique [0002] Exhaust gases from pressurized water reactor nuclear power plants are eventually released into the environment. In order to check whether the discharge flow of the nuclear power plant complies with the relevant provisions of the national standards, whether the concentration of the discharge flow is lower than the operating limit, provide basic data for estimating the dose of the public around the nuclear power plant, and ensure the personal safety of the nuclear power plant staff, it is necessary to carry out the air load of the chimney of the nuclear power plant. The activity concentration of aerosol radioactive material in the effluent is continuously measured. [0003] There are two kinds of gas discharged through the chimney of the pressurized ...

Claims

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Application Information

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IPC IPC(8): G01T1/203G01T1/24
CPCG01T1/203G01T1/24Y02E30/30
Inventor 曲广卫徐进财连琦刘诚王俊超周红靳磊李天吟常贤龙李显宝刘朋波
Owner SHAANXI WEIFENG NUCLEAR ELECTRONICS
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