| 摘要 |
PURPOSE:To suppress securely and safely an exposed dose to an allowable exposed dose or below by inputting the allowable exposed dose before starting a work, displyaing the allowable work time of a worker succeeding to the time point, signaling an alarm at a save time to urge the worker to save. CONSTITUTION:In case the worker and a maintenance person work in a monitoring area, the allowable exposed dose in its work is inputted from an allowable exposed dose setting part 34 before starting the work, and by a measured radiation quantity varying momentarily, an integrating dose and a tendency of its dose rate variation are used as an operating element to calculate an allowable work time in a local processor 30. Subsequently, the time is displayed by an allowable work time display part 28. Also, a limit work time is set by considering the time when the worker finishes the work and saves safely from the monitoring area, and when reaching its time, the worker is urged to save by signaling the alarm which is entirely different from an alarm outputted at the time of the abnormal value of a radiation dose rate, for instance, such as a chime, etc., and is discriminated easily by the worker. In this way, it is possible to execute the safe work of a worker in the monitoring area, and an exact exposure management. |
