The safety control system of the X-ray generator was established on the National Personnel Authority rule. The safety control system was built by consulting the Law Concerning Prevention from Radiation Hazards due to Radioisotopes, etc. A new designation of the X-ray protection supervisor was founded after the radiation protection one. Only the inside of the device was set up as the controlled area. All radiation workers were required to measure the radiation exposure. The periodic inspection of facilities comes to be carried out once a year.
