ISO 21909-1:2021
Passive neutron dosimetry systems — Part 1: Performance and test requirements for personal dosimetry

Standard No.

ISO 21909-1:2021

Release Date

2021

Published By

International Organization for Standardization (ISO)

Latest

ISO 21909-1:2021

Scope

This document provides performance and test requirements for determining the acceptability of neutron dosimetry systems to be used for the measurement of personal dose equivalent, Hp(10), for neutrons ranging in energy from thermal to 20 MeV1). This document applies to all passive neutron detectors that can be used within a personal dosemeter in part or in all of the above-mentioned neutron energy range. No distinction between the different techniques available in the marketplace is made in the description of the tests. Only generic distinctions, for instance, as disposable or reusable dosemeters, are considered. This document describes type tests only. Type tests are made to assess the basic characteristics of the dosimetry systems and are often ensured by recognized national laboratories This document does not present performance tests for characterizing the degradation induced by the following: — intrinsic temporal variability of the quality of the dosemeter supplied by the manufacturer; — intrinsic temporal variability of preparation treatments (before irradiation and/or before reading), if existing; — intrinsic temporal variability of reading process; — degradation due to environmental effects on the preparation treatments, if existing; — degradation due to environmental effects on the reading process. This document gives information for extremity dosimetry in the Annex C, based on recommendations given by ICRU Report 66. This document addresses only neutron personal monitoring and not criticality accident conditions. The links between this document and ISO 21909-2 are given in Annex A.

ISO 21909-1:2021 Referenced Document

• ISO 12789-1 Reference radiation fields - Simulated workplace neutron fields - Part 1: Characteristics and methods of production
• ISO 29661 Reference radiation fields for radiation protection — Definitions and fundamental concepts AMENDMENT 1: Reference point of personal dosemeters
• ISO 8529-1 Neutron reference radiations fields — Part 1: Characteristics and methods of production
• ISO 8529-2 Reference neutron radiations - Part 2: Calibration fundamentals of radiation protection devices related to the basic quantities characterizing the radiation field
• ISO 8529-3 Neutron reference radiation fields — Part 3: Calibration of area and personal dosemeters and determination of their response as a function of neutron energy and angle of incidence*， 2023-06-01 Update

ISO 21909-1:2021 history

• 2021 ISO 21909-1:2021 Passive neutron dosimetry systems — Part 1: Performance and test requirements for personal dosimetry
• 2015 ISO 21909-1:2015 Passive neutron dosimetry systems - Part 1: Performance and test requirements for personal dosimetry