| 摘要 |
PURPOSE:To collect working time data only at an objective place and dose amount data during said working time, by a method wherein the detection signal of a radiation detector is subjected to counting integration to be displayed along with the time integration value of a simultaneously started timer. CONSTITUTION:When a worker carrying a small light wt. dose amount integrating apparatus 20 and a time integrating apparatus 21 enters a working place, a switch 11 is pushed from the outside of a working uniform to start the operation of both apparatuses. Incident radioactive rays applied to a radiation detector 1 is converted to an electric signal to be amplified and the amplified electric signal is converted to a dose quantity by a counting integrator 3 where integrated to be displayed by a dose display apparatus 5 while an alarm is sounded by a dose alarm 4 when the integrated signal reaches a set value. In a timer 7, the time after the operation is started is integrated to be displayed by a time display apparatus 8 and an alarm is sounded by a time alarm 10 when the integrated time reaches a set value. When the worker leaves the working place, the operation of apparatuses 20, 21 is stopped by pushing the switch 11 again but the integrated values are preserved until reset buttons 6, 9 are pushed. |
