Status of the personnel dosimetry service of the National Institute of Radiation Hygiene in Norway, including practical experience from a Scandinavian intercomparison study

A status report of the nationwide personnel monitoring service at the National Institute of Radiation Hygiene (SIS) in Norway is presented, together with the results from a Scandinavian intercomparison study. The personnel dosimetry service at SIS covered approx. 5,200 workers in 1983, corresponding to 70% of all occupational exposed individuals being monitored. The service covers mainly medical and industrial radiography, but also various other applications within medicine and industry. Nuclear installations are not included. The collective doses for 1983 amount to 4.7 manSv for medical occupations, and 1.1. manSv for industrial radiography. These figures include estimates of the unrecorded collective doses below the detection limit, calculated on the basis of log-probability distributions. A Scandinavian filmbadge intercomparison study was performed in spring 1984. The random uncertainty of the filmbadge measurements was below 20% for all countries, and the total uncertainty was within the factor of 2 as recommended by the ICRP. (author)