English Abstract This report contains the results of exposure rate
measurements carried out during 1991 and 1992 at the site of the National
Institute of Public Health and Environmental Protection. The exposure rates
were determined by means of thermoluminescence dosimeters on a number of
locations. One of these locations was used for determinations of the
natural background (reference) on the site. The exposure rates averaged
over a year appeared not to deviate significantly from the natural
background levels in the Netherlands. A small increase of the annual mean
of the exposure rate near the building Sg, with regard to the reference
level, is partially due to irradiation activities for calibration
work.
