In order to achieve the purpose of protection, reduce the internal and external irradiating agent basins for all kinds of personnel according to the basic principle of limiting the amount of thorns. Methods to be adopted for radiation protection include:
(1) Controlling the quality and quantity of radiation source is the method to cure radiation damage. The intensity, energy and toxicity of the radiation source shall be minimized without affecting the application effect.
(2) Reduce exposure time. The total dose of external irradiation is proportional to the total irradiation time Therefore, the exposure time must be minimized. Measures such as reducing unnecessary stay time, rotating operation, improving operation technology, etc. can be taken to reduce individual exposure time.
(3) Strengthen shielding protection A protective screen shall be set between the radiation source and personnel to absorb or reduce the energy of radiation
(4) Distance protection. The agent basin of the point radioactive source is inversely proportional to the square of the distance. It should be as far away from the radioactive source as possible during operation Do not directly use hand-held radiation to admonish
(5) Enclosure isolation For open sources and their workplaces, the method of "blockade and isolation" must be adopted to control the open sources in a limited space and prevent their diffusion into the environment.
(6) Decontamination and cleaning. Operate an open source When using the open radioactive element, the medium pollution in the working environment shall be removed at any time. Monitor the pollution level and control the maximum diffusion to the surrounding environment.
