The Environmental Radiation Levels Around Medical Electron Linear Accelerator Buildings and Related Problems

The monitoring results of the environmental radiation levels around medical electron linear accelerator buildings and problems associated with them are described. The results show the majority of the accelerator buildings have a bit higher radiation levels than the background ones, and some of them are unusurally high. The main reason resulted in high radiation levels is faulty design for the radiation shielding. At the same time, individual cases appeared over protection against the radiation are also indicated.