2014 Volume 3 Issue 1 Pages 45-49
This paper introduced one example of optimized safety managements for X-ray irradiators with various levels of potential exposure risk used for researches. How to manage X-ray irradiators and workers using them under the consideration of reasonable radiation protection in the case of The University of Tokyo has been shown. Japanese regulation on usage of X-ray as well as important ideas of optimization of radiation protection by International Commission on Radiological Protection (ICRP) is explained. To achieve an optimized safety management of X-ray usage in The University of Tokyo, the following two categorizations have been developed: (1) categorizing X-ray irradiators into five groups based on the potential risk on radiation exposure to workers using them, and (2) categorizing workers into two groups based on the information on the category class of the irradiator which they use. After starting the new safety management system in the university, without decreasing safety management quality and safety culture of workers, related management cost could become downsized. In addition, a load such as health surveillance etc. of lots of the workers using irradiators with comparatively lower risk has been also decreased.
