Response of Permanent Monitoring Station (PMS) to increased radioactivity level in comparison with thermoluminescent detectors and Gamma Tracer monitor

In this work, the response of the Permanent Monitoring Station (PMS) was co mpared with the readings of environmental thermoluminescent dosimeters (TLD ) based on high sensitive MCP-N (LiF:Mg, Cu, P) thermoluminecent detectors and Gamma Tracer, an active device. Thermoluminescent dosimeters were insta lled close to an automatic warning system of PMS and to a portable Gamma Tr acer monitor which is used for long term, continuous measurements in the en vironment at the INP. For several weeks Cs-137, Co-60, Ra-226 and Am-241 ga mma-ray sources have been placed at distances of a few meters from the dosi meters, in order to modify the radiation environment.