Standard NBN EN ISO 14146:2021

Radiological protection - Criteria and performance limits for the periodic evaluation of dosimetry services (ISO 14146:2018)
Publication date
13.280 Radiation protection
Summary :
The quality of a supplier of a dosimetry service depends on both the characteristics of the approved (type‑teste
d) dosimetry system[1] and the training and experience of the staff, together with the calibration procedures and quality assurance programmes. This document specifies the criteria and the test procedures to be used for the periodic verification of the performance of dosimetry services supplying personal and/or area dosemeters. An area dosemeter can be a workplace dosemeter or an environmental dosemeter. The performance evaluation can be carried out as a part of the approval procedure for a dosimetry system or as an independent check to verify that a dosimetry service fulfils specified national or international type test performance requirements under representative exposure conditions that are expected or mimic workplace fields from the radiological activities being monitored. This document applies to personal and area dosemeters for the assessment of external photon radiation with a (fluence weighte
d) mean energy between 8 keV and 10 MeV, beta radiation with a (fluence weighte
d) mean energy between 60 keV and 1,2 MeV, and neutron radiation with a (fluence weighte
d) mean energy between 25,3 meV (i.e. thermal neutrons with a Maxwellian energy distribution with kT = 25,3 meV) and 200 MeV. It covers all types of personal and area dosemeters needing laboratory processing (e.g. thermoluminescent, optically stimulated luminescence, radiophotoluminescent, track detectors or photographic-film dosemeter
s) and involving continuous measurements or measurements repeated regularly at fixed time intervals (e.g. several weeks, one mont
h). Active dosemeters (for dose measuremen
t) may also be treated according to this document. Then, they should be treated as if they were passive (i.e. the dosimetry service reads their indicated values and reports them to the evaluation organizatio
n). [1] If this document is applied to a dosimetry system for which no approval (pattern or type tes
t) has been provided, then in the following text approval or type test should be read as the technical data sheet provided by the manufacturer or as the data sheet required by the regulatory authority.
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