English Abstract In 1990, an intercomparison programme for personnel
dosimetry services was developed and carried out by the National Institute
of Public Health and Environmental Protection. Six services participated in
this first national intercomparison in the Netherlands, all using TLD
systems. In addition, one service also participated with a film badge
system. The dosemeters were irradiated with photons on the surface of a 30
cm diameter sphere of polymethylmethacrylate (PMMA). The range of the mean
photon energy was 48 keV to 1250 keV. The range of the doses was 0.055 mSv
to 12.3 mSv. All services were able to reproduce doses larger than 0.2
mSv within -33% and +50%. For doses smaller than 0.2 mSv all services
using TLD systems were able to reproduce the conventional true value within
+- 100%.
