Device and method for detecting leakage dose rate of X-ray security detection equipment

Abstract

The invention discloses a device and method for detecting the leakage dose rate of X-ray security detection equipment. The leaked ray dose rate detection device comprises a radiation detection alarm host machine, five radiation detection probes and a specific positioning bracket which is used for fixing the radiation detection probes, wherein the radiation detection alarm host machine is provided with radiation detection alarm probe connecting wire imports; and the radiation detection alarm probes are connected with the radiation detection alarm host machine through connecting wires. The radiation detection alarm host machine of the detection device can simultaneously display detection results of the five radiation detection probes, and the alarm threshold valve of each radiation detection probe can be set respectively; when ultralimit alarm occurs, alarm probe numbers and information of actually measured leaked radiation dose rate can be definitely displayed by the radiation detection alarm host machine; and the method has the advantages of reasonable measuring point location setting, excellent synchronous measurement performance, scientific and safe detection mode, higher accuracy of detection results, and the like.

Description

technical field [0001] The invention relates to a detection device for X-ray leakage dose rate, in particular to a device and a detection method for X-ray safety inspection equipment leakage dose rate detection. Background technique [0002] With the large-scale application of micro-dose X-ray safety inspection equipment, the radiation safety performance of X-ray safety inspection equipment, especially its leakage radiation dose rate index, has attracted great attention from relevant management departments and the general public. The technical requirements of GB15208 on the leakage radiation dose rate of X-ray safety inspection equipment are "at any place 5cm away from the outer surface of the equipment (including the entrance and exit of the equipment), the X-ray leakage dose rate should be less than 5μGy / h". In practical applications, relevant management departments put forward higher radiation safety requirements. [0003] At present, the instruments used for X-ray safet...

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Problems solved by technology

[0003] At present, the instruments used for X-ray safety inspection equipment leakage dose rate inspection are generally composed of a radiation detection alarm host and a single-channel radiation detection alarm probe. During the measurement, the position of the radiation detection probe needs to be manually fixed, resulting in the inspection staff having to stay in close range for a long time. Exposure to X-ray safety inspection equipment at work will increase the cumulative radiation dose of inspection staff and affect their health

[0004] In addition, the leakage radiation dose rate detection device of the existing X-ray safety inspection equipment is generally a single-channel radiation detection probe, and the inspection results of different inspection points of the same inspected equipment are obtained in different sequences of tests, which affects the inspection result data. Comparability and test error; at the same time, if you want to obtain the test results of the leakage radiation dose rate at 5 points, you must repeat the test 5 times, which also greatly affects the test work efficiency

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