a three-year survey of film badge service performance in iran

an extensive study was undertaken to investigate on the overall film badge service performance with which occupational radiation, exposures are reported in iran, the study involved the analysis of film badges exposed to x-and gamma rays and beta particles. for test exposures, x-rays between 60 and 140 kvpco-60 gamma radiation and sr-90 beta particles were used. the actual delivered dose equivalents were limited to 0.40-5 msv which is the range of annual occupational dose reported by many international studies. this study revealed that the reporting on gamma rays, specially for co-60, was very good. the reports on x-rays were overestimated. the overestimation was considerable at higher kvp's. the results for beta particles were rather poor.