Möglichkeiten zur Beeinflussung der Personendosen am Beispiel neuerer Druckwasserreaktoren

It has been possible to reduce the average dose to personnel from Siemens/KSU pressurized water reactors from 5.25 man-Sv in 1980 to 1.73 man-Sv in 1990. This change has been attributable, on the one hand, due to improvements in the screening and employment of personnel and, on the other hand, very heavily on dose rate developments in the PWR. If the dose rate of the latest Siemens PWRs (initial criticality after 1985) is compared with that on older plants, a reduction of dose rate by a large order of magnitude can be observed in the newer plants