NF EN ISO 11665-3

NF EN ISO 11665-3

February 2020
Standard Current

Measurement of radioactivity in the environment - Air: radon-222 - Part 3 : spot measurement method of the potential alpha energy concentration of its short-lived decay products

This document describes spot measurement methods for determining the activity concentration of short-lived radon-222 decay products in the air and for calculating the potential alpha energy concentration. This document gives indications for performing a spot measurement of the potential alpha energy concentration, after sampling at a given place for several minutes, and the conditions of use for the measuring devices. The measurement method described is applicable for a rapid assessment of the potential alpha energy concentration. The result obtained cannot be extrapolated to an annual estimate potential alpha energy concentration of short-lived radon-222 decay products. Thus, this type of measurement is not applicable for the assessment of annual exposure or for determining whether or not to mitigate citizen exposures to radon or radon decay products. This measurement method is applicable to air samples with potential alpha energy concentration greater than 5 nJ/m3. NOTE This document does not address the potential contribution of radon-220 decay products.

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Main informations

Collections

National standards and national normative documents

Thematics

Sécurité, Gestion des risques et SST, QSE

Publication date

February 2020

Number of pages

29 p.

Reference

NF EN ISO 11665-3

ICS Codes

13.280   Radiation protection
17.240   Radiation measurements
27.120.01   Nuclear energy in general

Classification index

M60-763-3

Print number

1

International kinship

ISO 11665-3:2020

European kinship

EN ISO 11665-3:2020
Sumary
Measurement of radioactivity in the environment - Air: radon-222 - Part 3 : spot measurement method of the potential alpha energy concentration of its short-lived decay products

This document describes spot measurement methods for determining the activity concentration of short-lived radon-222 decay products in the air and for calculating the potential alpha energy concentration.

This document gives indications for performing a spot measurement of the potential alpha energy concentration, after sampling at a given place for several minutes, and the conditions of use for the measuring devices.

The measurement method described is applicable for a rapid assessment of the potential alpha energy concentration. The result obtained cannot be extrapolated to an annual estimate potential alpha energy concentration of short-lived radon-222 decay products. Thus, this type of measurement is not applicable for the assessment of annual exposure or for determining whether or not to mitigate citizen exposures to radon or radon decay products.

This measurement method is applicable to air samples with potential alpha energy concentration greater than 5 nJ/m3.

NOTE This document does not address the potential contribution of radon-220 decay products.

Replaced standards (1)
NF EN ISO 11665-3
January 2016
Standard Cancelled
Measurement of radioactivity in the environment - Air : radon-222 - Part 3 : spot measurement method of the potential alpha energy concentration of its short-lived decay products

<p>ISO 11665-3:2012 describes spot measurement methods for determining the activity concentration of short-lived radon-222 decay products in the air and for calculating the potential alpha energy concentration.</p> <p>ISO 11665-3:2012 gives indications for performing a spot measurement of the potential alpha energy concentration, after sampling at a given place for several minutes, and the conditions of use for the measuring devices.</p>

Table of contents
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  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes, définitions et symboles
  • 4 Principe de la méthode de mesure
  • 5 Équipement
  • 6 Prélèvement
  • 7 Méthode de détection
  • 8 Mesurage
  • 9 Expression des résultats
  • 10 Rapport d'essai
  • Annexe A Exemples de protocoles de comptage alpha global
  • Annexe B Calcul des coefficients k 218 Po, j, k 214 Pb, j et k 214 Bi, j
  • Annexe C Méthode de mesure utilisant un comptage alpha global selon la méthode de Thomas
  • Bibliographie
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