CONVERSION FACTOR FROM DOSEMETER READING TO AIR KERMA FOR NUCLEAR WORKER USING ANTHROPOMORPHIC PHANTOM FOR FURTHER CONVERSION FROM AIR KERMA TO ORGAN-ABSORBED DOSE.

Hiroshige Furuta,Norio Tsujimura,Shin Saigusa,Akemi Nishide,Shin'Ichi Kudo

doi:10.1093/rpd/ncaa051

Hiroshige Furuta, Norio Tsujimura + Show 3 more

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https://doi.org/10.1093/rpd/ncaa051

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Abstract

Estimation of cancer risk based on the organ-absorbed dose is underway for the Japanese Epidemiological Study on Low-Dose Radiation Effects (J-EPISODE). The reconstruction method for the organ-absorbed dose follows the approach adopted in the IARC 15-Country Collaborative Study, which examined the dosemeter response to photon exposure for the old film badge (FB) type, a multi-element FB and a thermoluminescence dosemeter. Until 2000, the dosemeters used in Japan were almost the same in the IARC study, so IARC study data could be used as they were. However, since 2000, the type of dosemeter has been replaced with active personal dosemeters (hereafter called electronic personal dosemeters), radio-photoluminescent glass dosemeters (Glass badge) and optically stimulated luminescence dosemeters (Luminess badge). Hence, it was necessary to collect these data again. A dosemeter response experiment was conducted using a device that irradiated an anthropomorphic phantom in the Japan Atomic Energy Agency calibration laboratories. The aim of the paper is to provide a conversion factor from reading in terms of Hp(10) to air kerma for realistic conditions for further conversion from air kerma to organ-absorbed dose. The obtained dosemeter responses for the dosemeter types currently used in Japan were consistent with those in the IARC study. These data will be utilized for J-EPISODE in reconstructing the organ-absorbed dose.

Highlights

AND AIMThe Japanese Epidemiological Study on LowDose Radiation Effects (J-EPISODE)(1) has been conducted since 1990 and has analyzed the health effects associated with radiation exposure evaluated as the personal dose equivalent, Hp[10]
The evaluation of cancer morbidity and mortality using the organ-absorbed dose (Gy) is recommended by the International Commission on Radiological Protection (ICRP)(2), and it was adopted for the 15-Country Collaborative Study of cancer risk among radiation workers in the nuclear industry conducted by IARC[3,4,5], the International Nuclear Workers Study (INWORKS)(6–9), Mayak study[10] and the Life Span Study of atomic bomb survivors[11,12,13]
The most comprehensive previous study that reconstructed the organ-absorbed dose from the recorded dose was set up in the framework of the IARC 15-Country Collaborative Study[3,15], where experiments on dosemeter responses to photon exposure were performed for three types of dosemeters: the old film badge (FB), a multi-element FB and a thermoluminescence dosemeter (TLD)

Summary

Introduction

AND AIMThe Japanese Epidemiological Study on LowDose Radiation Effects (J-EPISODE)(1) has been conducted since 1990 and has analyzed the health effects associated with radiation exposure evaluated as the personal dose equivalent, Hp[10]. The most comprehensive previous study that reconstructed the organ-absorbed dose from the recorded dose was set up in the framework of the IARC 15-Country Collaborative Study[3,15], where experiments on dosemeter responses to photon exposure were performed for three types of dosemeters: the old film badge (FB), a multi-element FB and a thermoluminescence dosemeter (TLD). These types of dosemeters were used in the facilities that had participated in the IARC study from the inception of the nuclear industry until approximately 2000. Since 2000, the type of dosemeter has been changed, and it was necessary to collect those data again

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