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  • BSI
    BS ISO 8769:2020 Measurement of radioactivity. Alpha-, beta- and photon emitting radionuclides. Reference measurement standard specifications for the calibration of surface contamination monitors
    Edition: 2020
    $315.02
    / user per year

Description of BS ISO 8769:2020 2020

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.



Standard NumberBS ISO 8769:2020
TitleMeasurement of radioactivity. Alpha-, beta- and photon emitting radionuclides. Reference measurement standard specifications for the calibration of surface contamination monitors
StatusWithdrawn
Publication Date2020-06-23
Withdrawn Date2023-03-16
ReplacesBS ISO 8769:2016
Identical National Standard OfISO 8769
DescriptorsAlpha-particles, Surfaces, Nuclear radiation, Calibration, Photons, Radiation measurement, Radioactive sources, Contamination, Control samples, Contamination meters, Radioactive materials, Beta-particles
ICS17.240 Radiation measurements
CommitteeNCE/2
ISBN978 0 539 01229 3
PublisherBSI
Pages22



About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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