In order to achieve protection purposes, in accordance with the basic principles of dose-limiting, reducing the categories of personnel inside and outside the radiation dose to be taken are:
(A) the quantity and quality control of radiation sources, radiation damage is a radical approach. Without affecting the application effect of the premise, should minimize the radiation intensity, energy, and toxicity.
(2) to reduce the irradiation time, total dose of external beam irradiation time is proportional to the total, it is necessary to reduce the irradiation time of day. Can be taken to reduce unnecessary duration, rotation operations, improve operating techniques and other measures to reduce the exposure time by individuals.
(3) strengthening shielding. Between the source and the personnel shield, absorbing or weaken ray energy.
(4) distance protection. Point-like sources of the dose is inversely proportional to the square of the distance, the operation should be as far away from sources, avoid direct use of hand-held radioactive sources.
(5) enclosed isolation. For open its workplaces that must be taken to "blockade isolation" approach, the open source control in a limited space, to prevent diffusion into the environment.
(6) decontamination cleaning. Operating an open source, the use of open radioactive elements, to any cleanup of contaminated environmental media, monitoring pollution levels, controlling a large number of diffusion to the surrounding environment.
(7) personal protection. With the rational use of personal protective clothing, such as masks, gloves, work shoes, clothing, etc.; compliance with personal protective rules in an open radiation in the workplace, the prohibition everything possible to make the behavior of radioactive elements into the human body, such as the prohibition drinking, smoking , eating, makeup, etc.