Experience with occupational radiation exposure in PWRs built by Kraftwerk Union

The total radiation exposure to the plant personnel has gained increasing interest during the past few years. From this point of view, the exposure effect of different work procedures has to be analysed besides the exposure to the individual. A summary of the available data is given with indication of the essential influences. The exposures during refuelling outages may amount to about 50 to 90% of the yearly dose. Twelve years of operation of three plants result in an average of 0.61 man-rems per megawatt-year. (orig.)