Method for rapidly screening radioactive contamination of personnel
A radioactive and personnel-based technology, applied in the field of nuclear emergency rescue, can solve problems such as poor detection efficiency, achieve the effects of increasing detection time, reducing workload, and improving accuracy
Active Publication Date: 2021-06-15
ACADEMY OF MILITARY MEDICAL SCI
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Problems solved by technology
Due to the small size of the NaI(Tl) scintillator, ionization chambers, proportional counter tubes or Geiger-Miller counter tubes are gas detectors, which have poor detection efficiency for radiation, especially gamma rays
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[0065] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0066] A method for rapidly screening personnel for radioactive contamination, comprising the steps of:
[0067] Step 1, set up the personnel waiting area, the area of the personnel waiting area > 2000m 2 ; Density of persons to be inspected 2 , the default value of the environmental radiation dose rate in the area to be inspected is H b ;
[0068] Step 2, group the persons to be inspected in the persons to be inspected area; divide the persons to be inspected into groups to be inspected;
[0069] Wherein, the method for determining the number m of person...
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The invention relates to the field of nuclear emergency rescue, in particular to a method for rapidly screening radioactive contamination of personnel, which can group to-be-detected personnel by using a statistical method before radioactive contamination detection is carried out on large-scale to-be-detected personnel, carry out group pre-detection on a to-be-detected group consisting of a plurality of to-be-detected personnel by using a large-area radiation detector and realize rapid classification of the to-be-detected personnel. The to-be-detected personnel are shunted to a professional detection area and a rapid detection area through group pre-detection, so that the workload of professional detection can be greatly reduced and the detection speed can be remarkably improved on the premise of no missing detection. Besides, in group pre-detection, a large-area radiation detector is used for detecting the pollution condition of the to-be-detected group in combination with a distance measuring-timer, so that the distance between the to-be-detected group and the large-area radiation detector and the measurement time are obtained in addition to the cumulative count of the large-area radiation detector, and the radioactivity measurement precision is improved.
Description
technical field [0001] The invention relates to the technical field of nuclear emergency rescue, and more specifically, the invention relates to a method for quickly screening personnel for radioactive contamination. Background technique [0002] Nuclear and radiation accidents refer to the general term for accidents that cause harm to people and the environment due to uncontrolled chain nuclear reactions and uncontrolled escape of radioactive substances. The specific types of nuclear accidents include nuclear reactor accidents, radiation device accidents, nuclear material criticality accidents, nuclear weapon accidents, radioactive waste storage accidents, radioactive source loss accidents, medical exposure accidents, and "dirty bomb" terrorist attacks, etc. A nuclear accident affects a wide range of people, involves a large number of people, and lasts for a long time. It can cause heavy economic losses and cause greater social panic. [0003] After a nuclear and radiation...
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IPC IPC(8): G01T1/203G01T1/204G01T1/167
CPCG01T1/203G01T1/204G01T1/167
Inventor 张晓敏许旭宁静谢向东
Owner ACADEMY OF MILITARY MEDICAL SCI