ABSTRACT
During 2000 a trial performance test for individual monitoring services in Europe was organised by the European Radiation Dosimetry Group (EURADOS), covering whole-body beta/photon, whole-body neutron and extremity beta/photon dosimetry for both monoenergetic and simulated workplace fields. The UK National Radiological Protection Board (NRPB), which supplies routine dosemeters to some 50,000 wearers in the UK and overseas, participated in this trial performance test. This paper presents the results obtained for the NRPB whole-body TLD, neutron (PADC) and extremity dosimetry services and comments on their performance in comparison with the overall results.
Subject(s)
Californium , Film Dosimetry/standards , Radiometry/standards , Beta Particles , Europe , Humans , Neutrons , Photons , Reproducibility of ResultsABSTRACT
The Extremity TLD service provided by the UK National Radiological Protection Board (NRPB) supplies dosemeters to 3200 wearers in various occupations, primarily in the industrial, research and medical sectors. The dosemeters and associated processing equipment were supplied by Bicron/NE Technology Ltd and the service in this form has been operating successfully for over 15 years. The dosemeter uses LiF powder, which is deposited onto the adhesive face of a carbon-loaded Kapton tape. This paper is a periodical re-evaluation of the system's high dose response. Whereas there are no UK requirements for extremity dosimetry services to hold approval for assessment of absorbed doses >0.5 Gy, it is useful to characterise how the dosemeter behaves at such levels.
