NF EN ISO 21909-1, M61-101-1 (07/2023)

This document provides operating and testing requirements for determining the acceptability of neutron dosimetric systems that are to be used for the measurement of individual dose equivalent, Hp(10), over a range of energies neutrons ranging from thermal energies to 20 MeV. This document applies to all passive neutron detectors usable in a personal dosimeter in part or all of the neutron energy range mentioned above. In the description of the tests, no distinction is made between the different techniques available on the market. Only general distinctions, such as single-use or reusable dosimeters for example, are taken into account. This document only describes type testing. The purpose of type testing is to evaluate the basic characteristics of dosimetric systems and is often carried out by recognized national laboratories. This document does not describe operating tests to characterize the degradation induced by: — the intrinsic temporal variability of the quality of the dosimeter supplied by the manufacturer; — the intrinsic temporal variability of the preparation treatments (before irradiation and/or before reading), if applicable; — the intrinsic temporal variability of the reading process; — environmental effects on preparation treatments, if applicable; — environmental effects on the reading process. Annex C of this document provides information relating to extremity dosimetry, based on the recommendations given in ICRU Report 66. This document only addresses individual neutron dose monitoring, not criticality accident conditions. Links between this document and ISO 21909-2 are shown in Annex A.
(Automatic translation from French)