EURADOS intercomparison of passive H*(10) area dosemeters 2014

Abstract

In an intercomparison, the performance of 32 passive area dosimetry systems was tested under real environmental conditions. • The dosemeters were exposed at dosimetry reference sites of PTB, while independent H*(10) reference values were established. • The response of the systems to terrestrial as well as to secondary cosmic radiation was measured. • The results provide information on the accuracy of typical passive area dose measurements in Europe. • Deviations of the absolute dose values of different systems from each other are partly caused by the dissimilar response to cosmic radiation.

Review of the thermoluminescent dosimetry method for the environmental dose monitoring

“…If the field is known at the place of the mea sure ment, the cal i bration could be done with the qual ity that has sim i lar mean spec trum en ergy. Thus, it is rec om mended in [57,58] that cal i bra tion should be done in pho ton fields, pref er a bly in a sealed 226 Ra source.…”

“…Well pre pared per for mance tests are nec es sary to en sure ac cu racy, to reach in ter na tional stan dards and to im prove en vi ron men tal do sim e try meth ods. This can also be achieved through in ter na tional intercomparisons [57,58,61] as well through interlaboratory intercom pari sons [62,63]. Intercomparisons pro vide unique op portu ni ties to par tic i pants to check their cal i bra tion, the use of dif fer ent cor rec tions and the meth ods of mea surements [15].…”

“…In or der to achieve re al is tic re sults, it is im por tant that these intercomparisons are or ga nized in the en vi ronmen tal con di tions. An ex am ple of en vi ron men tal do sime try intercomparison dur ing pro ject PRE PARED NESS is given in [57], in which ref er ence sites for en vi ron mental ra di a tion and sec ond ary cos mic ra di a tion are described in de tail.…”

The work programme of EURADOS on internal and external dosimetry

“…S2 compares and studies passive environmental detectors. Results of the most recent comparison were published by Dombrowski et al (2017) and Duch et al (2017). Currently, the first EURADOS comparison (IC2017calm) of calibration methods for passive area dosimeters is being performed.…”

“…This has been carried out in collaboration with the MetroERM project (Metrology for early warning networks -http://earlywarning-emrp.eu/), and results have been published (e.g. Camp and Vargas, 2014;Dombrowski, 2014;Vargas et al, 2017 Dombrowski et al (2017) and Duch et al (2017). Currently, the first EURADOS comparison (IC2017calm) of calibration methods for passive area dosimeters is being performed.…”