The personal dose monitoring of the radiation workers can truly reflect the radiation workers'acceptance of dose and the level of protection in the workplace, so as to better improve the radiation protection conditions and ensure the health and safety of the radiation workers. Reliable basis for [1]. From 1990 to 1996, 126 medical diagnostic X-ray workers were monitored and evaluated for personal dose.
1 materials and methods
1.1 Instruments and Components:
( 1) FJ-377 Thermoluminescence Dosimeter, Beijing Nuclear Instrument Factory;
( 2) HW-III Thermoluminescence Annealing Furnace, China Radiation Protection Research Institute;
( 3) Glass Tube LiF (mg, Cu, P) Components and IRMB-100 Thermoluminescence Dosimeter, Beijing Radiological Research Institute It is provided.
1.2 Monitoring method:
The glass tube LiF (Mg, Cu, P) elements were screened according to the dispersity less than 5%, and the thermoluminescent personal dosimeter was installed after annealing. Each dosimeter contained three components. Because our committee distributes all over the country, considering the deduction of background, each unit sends 4-5 dosimeters, at the same time the next dosimeter wears the request, the monitoring period is 2-3 months. If the actual monitoring time is less than one year, the time dose is corrected and the annual dose equivalent is calculated.
1.3 Quality Control:
( 1) Regular comparison and calibration of instruments, screening of glass tube LiF (Mg, Cu, P) components according to less than 5% dispersion, so that the instruments and components meet the requirements of the Ministry of Health for personal dose monitoring of radiation work;
( 2) To identify the reasons for suspicious or untrue data through on-site investigation or correspondence, etc., to determine retention. Or remove.
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