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Radiation Protection Dosimetry Advance Access originally published online on March 3, 2007
Radiation Protection Dosimetry 2007 125(1-4):105-108; doi:10.1093/rpd/ncm185
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© The Author 2007. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Quality assurance of personal beta particle dosemeters used for individual monitoring of occupationally exposed persons

Klaus Helmstädter and Peter Ambrosi*

Physikalisch-Technische Bundesanstalt (PTB) Bundesallee 100, 38116 Braunschweig, Federal Republic of Germany

*Corresponding author: peter.ambrosi{at}ptb.de

As a result of investigations and intercomparison measurements organised from 1996 to 1999 by PTB, several types of personal dosemeters, all based on TLD, were selected by the dosimetry services for the measurement of the personal dose equivalent Hp(0.07) in beta and/or photon radiation fields. These dosemeters have now the status of legal personal beta partial-body dosemeters. Workplaces at which beta radiation might significantly contribute to the doses to the extremities are to be found today with increasing frequency in radiation therapy, radiation source production and nuclear power plants. Quality assurance for beta personal dosemeters is stipulated by guidelines for the official dosimetry service and is carried out by way of the intercomparison measurements organised periodically by the PTB. The results are evaluated based on the recommendations of the German Commission on Radiological Protection (SSK). The procedure of these intercomparison measurements will be explained in detail. The experience gained from three series of comparisons with seven types of fingerring dosemeters will be described and the results will be presented. The anonymity of the dosemeter types and of the participants in the intercomparison will be preserved.


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