Multi-channel gas sampling radiation monitoring device and working method thereof

Abstract

The invention relates to the field of radiation protection and provides a multi-channel gas sampling radiation monitoring device and a working method thereof. A PLC (Programmable Logic Controller) control box is utilized to control a solenoid valve for cyclically achieving on-off control of a plurality of sampling channels, a program is made for enabling different gas sampling channels in different time periods to sample gas to be measured in different regions, sample gas is fed into a radiation detector at the rear end of the device, and the radioactive content of the sample gas is measured. The device is simple in structure, convenient to operate, efficient and easy to maintain, can be used for performing gas sampling on multiple regions of relevant nuclear places and measuring the radioactive content by the radiation detector, and effectively solves the difficult real use problems of a great number of required equipment, high fund amount, space occupation, difficulty for management and maintenance, and the like in multi-channel gas sampling radiation monitoring.

Description

technical field [0001] The invention relates to the field of radiation protection, in particular to a multi-channel gas sampling radiation monitoring device and a working method thereof. Background technique [0002] The gas sampling radiation monitoring device is a very widely used type of radiation detector. The basic principle is to use an air pump or a fan to draw the gas to be tested in a harsh environment or inaccessible areas to a designated area through the sampling pipeline, so that in a mild environment In the process, special radiation detectors are used to measure the content of radioactive substances in the sampled gas, and to monitor whether radioactive contamination occurs in the area to be tested, so as to determine whether the nuclear process (including radiation) related to the area to be tested is abnormal, and whether the staff may be exposed to radiation harm. Since the method of gas sampling and measurement ensures that the area where the radiation det...

AI Technical Summary

Problems solved by technology

[0003] General gas sampling radiation measurement is single-channel sampling measurement, gas sampling and radiation measurement are one-to-one relationship, a gas sampling radiation measurement device can only sample gas and measure the radioactive level in one area to be tested

In nuclear power plants, test reactors, and nuclear fuel production and storage sites, there are many nuclear processes and densely distributed staff. Therefore, there are often a large number of harsh areas in a nuclear facility that need to be measured by gas sampling and radiation monitoring devices at the same time. If all samples are measured The single-channel sampling method often requires a large number of single-channel gas sampling radiation detection devices, which not only wastes money, but also takes up space resources and increases the difficulty of later equipment maintenance.

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