Investigations into the basic properties of different passive dosimetry systems used in environmental radiation monitoring in the aftermath of a nuclear or radiological event

Due to the need for harmonization of passive dosimetry and requirements international standards in area environmental monitoring radiation protection, multiple types various systems based on different ionizing detection mechanisms were subjected extensive performance testing. In scope EMPIR project 16ENV04 Preparedness, 12 was examined fields photon energies, angles incidence ambient dose equivalent rates order estimate their almost omni-directionally energetically broad field natural environment. The use detectors, holders, calibrations, measurement procedures uncertainties, leads differences measured data. Prior investigations are necessary achieve reliable comparable measurements Europe.