INTERCOMPARISON OF PERSONAL RADIATION MONITORING SERVICES IN THE ASIA-PACIFIC REGION

The Australian Radiation Laboratory conducted an international interco mparison of personal radiation monitoring services in the Asia/Pacific region during 1991. Twenty nine organisations from sixteen countries took part in the study, with the People's Republic of China having ele ven participants. Dosemeters incorporating thermoluminescent phosphors and conventional film were submitted for evaluation. Both types were irradiated at normal incidence on a phantom with Cs-137 gamma rays, X rays and beta radiation from a Sr-90/Y-90 source. Participants were re quested to assess their dosemeters in terms of the new operational qua ntities of the ICRU for personal radiation monitoring, in particular t he personal dose equivalents H(p)(0.07) and H(p)(10). There appears to be some confusion amongst participants as to the correct method and t he accepted conversion coefficients for calculating the new operationa l quantities.