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ILNAS-EN ISO 8769:2022 Edition 12/2022
Measurement of radioactivity - Alpha-, beta- and photon emitting radionuclides - Reference measurement standard specifications for the calibration of surface contamination monitors (ISO 8769:2020)
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Abstract

This document specifies the characteristics of reference measurement standards of radioactive surface contamination, traceable to national measurement standards, for the calibration of surface contamination monitors. This document relates to alpha-emitters, beta-emitters, and photon emitters of maximum photon energy not greater than 1,5 MeV. It does not describe the procedures involved in the use of these reference measurement standards for the calibration of surface contamination monitors. Such procedures are specified in IEC 60325[6], IEC 62363[7], and other documents. NOTE Since some of the proposed photon standards include filters, the photon standards are to be regarded as reference measurement standards of photons of a particular energy range and not as reference measurement standards of a particular radionuclide. For example, a 241Am source with the recommended filtration does not emit from the surface the alpha particles or characteristic low-energy L X-ray photons associated with the decay of the nuclide. It is designed to be a reference measurement standard that emits photons with an average energy of approximately 60 keV. This document also specifies preferred reference radiations for the calibration of surface contamination monitors. These reference radiations are realized in the form of adequately characterized large area sources specified, without exception, in terms of surface emission rate and activity which are traceable to national standards.

Status

Standard - Active

Origin

Technical Committee :
CEN/TC 430 : Nuclear energy, nuclear technologies, and radiological protection

Implementation

start of the vote on the project    25/08/2022   date of ratification (dor)    18/12/2022
end of the vote on the project    17/11/2022   date of anouncement (doa)    31/03/2023
start of the vote on the final project    29/04/2024   date of publication (dop)    30/06/2023
end of the vote on the final project    24/06/2024   date of withdrawal (dow)    30/06/2023


Publication Official Journal
of the Grand-Duchy of Luxembourg
22/06/2023
Reference Mémorial A N° 317

International Classification for Standards (ICS codes) :

17.240 : Radiation measurements

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