Abstract
For individual monitoring for external exposure of workers, electronic dosimeters have been widely used as supplementary dosimeters in nuclear facilities. In this study, an electronic pocket dosimeter for measuring the Hp(10) and Hp(0.07), which was recently developed by Aloka Co., Ltd., has been examined in terms of (1) energy dependences for gamma- and beta-rays and (2) applicability in actual radiation workplaces. For the latter purpose, performance tests were carried out in hot cells of the Reactor Fuel Examination Facility in the Japan Atomic Energy Agency. From the examinations, the followings were found; (1) the energy responses vary within ±20 % in the intended energy range for both radiations. (2) At the actual radiation workplaces, the readings of the dosimeter tend to show slightly higher Hp(10) and lower Hp(0.07) than those of other types of dosimeters, i.e. glass dosimeters and thermoluminescence dosimeters.
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