TLD measurements with LiF and CaSO4:Tm

LiF chips used for personnel monitoring at our Institute are planned to be used at the Paks Nuclear Power Station (Hungary). The thermal and intermediary neutron sensitivities of the LiF chips were established. In environmental monitoring, CaSO4:Tm TLDs are used in tandem: one being heavily, the other being slightly filtered. In this way not only the dose but also the low energy contribution of terrestrial radiation can be established. The system was tested in International Intercomparisons. Certain other dose rate dependence measurements of CaSO4:Tm in the literature are questionable, leading to the conlcusion of TLD reader instability. (author)