NF M60-760

NF M60-760

August 2017
Standard Cancelled

Nuclear Energy - Measurement of radioactivity in the environment - Air - Sampling of aerosols for measurement of radioactivity in the environment

Le présent document concerne le prélèvement d?aérosols sur filtre pour le mesurage en différé de la radioactivité des aérosols dans l'environnement avec une expression du résultat en Bq.Nm-3 Il décrit les techniques d'échantillonnage des aérosols dans l'environnement et définit l'expression de l'activité volumique des aérosols résultant des mesures effectuées dans le cadre du suivi de la radioactivité atmosphérique dans l'environnement. Dans ce but, il traite des moyens à mettre en oeuvre : pour échantillonner les aérosols, dont la taille est généralement comprise entre 0,01 et 50 micron m; pour déterminer le volume d'air ayant traversé le filtre ; pour calculer une activité volumique et l'incertitude associée.

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Main informations

Collections

National standards and national normative documents

Thematics

Sécurité, Gestion des risques et SST, QSE

Publication date

August 2017

Number of pages

40 p.

Reference

NF M60-760

ICS Codes

13.280   Radiation protection
17.240   Radiation measurements
27.120.01   Nuclear energy in general

Classification index

M60-760

Print number

1
Sumary
Nuclear Energy - Measurement of radioactivity in the environment - Air - Sampling of aerosols for measurement of radioactivity in the environment

Le présent document concerne le prélèvement d?aérosols sur filtre pour le mesurage en différé de la radioactivité des aérosols dans l'environnement avec une expression du résultat en Bq.Nm-3 Il décrit les techniques d'échantillonnage des aérosols dans l'environnement et définit l'expression de l'activité volumique des aérosols résultant des mesures effectuées dans le cadre du suivi de la radioactivité atmosphérique dans l'environnement. Dans ce but, il traite des moyens à mettre en oeuvre : pour échantillonner les aérosols, dont la taille est généralement comprise entre 0,01 et 50 micron m; pour déterminer le volume d'air ayant traversé le filtre ; pour calculer une activité volumique et l'incertitude associée.
Replaced standards (1)
NF M60-760
October 2001
Standard Cancelled
Nuclear energy - Measurement of radioactivity in the environment - Air - Sampling of aerosols for measurement of radioactivity in the environment

Le présent document donne des recommandations pour le prélèvement d'aérosols en vue de la mesure de la radioactivité dans l'environnement. Les méthodes de mesure de la radioactivité ne sont pas traitées dans le présent document.

Standard replaced by (1)
NF ISO 20044
February 2023
Standard Current
Measurement of radioactivity in the environment - Air : aerosol particles - Test method using sampling by filter media

<p class="MsoBodyText" style="margin-bottom: 12.0pt; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">This document provides guidance for</span></p> <p class="ListContinue1" style="tab-stops: 19.85pt 39.7pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">—<span style="mso-tab-count: 1;">    </span>the sampling process of the aerosol particles in the air using filter media. This document takes into account the specific behaviour of aerosol particles in ambient air (<span class="citeapp"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">Annex B</span></span></span>).</span></p> <p class="ListContinue1" style="tab-stops: 19.85pt 39.7pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">—<span style="mso-tab-count: 1;">    </span>Two methods for sampling procedures with subsequent or simultaneous measurement:</span></p> <p class="MsoListContinue2" style="tab-stops: 19.85pt 40.0pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">—<span style="mso-tab-count: 1;">    </span>the determination of the activity concentration of radionuclides bound to aerosol particles in the air knowing the activity deposited in the filter;</span></p> <p class="MsoListContinue2" style="tab-stops: 19.85pt 40.0pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">—<span style="mso-tab-count: 1;">    </span>the operating use of continuous air monitoring devices used for real time measurement.</span></p> <p class="MsoBodyText" style="margin-bottom: 12.0pt; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">The activity concentration is expressed in becquerel per cubic metre (Bq∙m<sup>-3</sup>).</span></p> <p class="MsoBodyText" style="margin-bottom: 12.0pt; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">This document describes the test method to determine activity concentrations of radionuclides bound to aerosol particles after air sampling passing through a filter media designed to trap aerosol particles. The method can be used for any type of environmental study or monitoring.</span></p> <p class="MsoBodyText" style="margin-bottom: 12.0pt; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">The test method is used in the context of a quality assurance management system (<span class="stdpublisher"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">ISO/IEC</span></span></span> <span class="stddocNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">17025</span></span></span><sup>[<span class="citebib"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">2</span></span></span>]</sup>).</span></p> <p class="MsoBodyText" style="margin-bottom: 12.0pt; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">This document does not cover the details of measurement test techniques (gamma spectroscopy, global alpha and beta counting, liquid scintillation, alpha spectrometry) used to determine the activity deposited in the media filter, which are either based on existing standards or internal methods developed by the laboratory in charge of those measurements. Also, this document does not cover the variability of the aerosol particle sizes as given by the composition of the dust contained in ambient air<sup>[<span class="citebib"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">3</span></span></span>][<span class="citebib"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">4</span></span></span>]</sup>. This document does not address to sampling of radionuclides bound to aerosol particles in the effluent air of nuclear facilities [see <span class="stdpublisher"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">ISO</span></span></span> <span class="stddocNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">2889</span></span></span>:<span class="stdyear"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">2021</span></span></span>]<sup>[<span class="citebib"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">5</span></span></span>]</sup>.</span></p> <p class="MsoBodyText" style="margin-bottom: 12.0pt; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">The procedures described here facilitate the sampling of aerosol bound radionuclides. It is supposed to conform to the national and international requirements for monitoring programmes safety standards of IAEA<sup>[<span class="citebib"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">6</span></span></span>]</sup>.</span></p> <p class="MsoBodyText" style="margin-bottom: 12.0pt; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">The characteristics of the sampling location (coordinates, type of vegetation, obstacles) need to be documented prior to commencing the monitoring. The guidelines of the World Meteorology Organization (WMO) include the criteria for representative measurements of temperature, wind-speed, wind direction, humidity and precipitation for all the weather stations in the world<sup>[<span class="citebib"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">7</span></span></span>]</sup>.</span></p>

Table of contents
View the extract
  • 1
  • 2 Références normatives
  • 3 Symboles, définitions et unités
  • 4 Échantillonnage
  • 5 Du prélèvement à la mesure de l'activité
  • 6 Expression de l'activité volumique mesurée
  • Annexe A (Informative) Les radionucléides présents dans l'atmosphère
  • Annexe B (informative) Généralités sur le comportement de l'aérosol
  • Annexe C (informative) Exemple de tête de prélèvement et caractérisations
  • Annexe D (informative) Exemples de caractéristiques de quelques filtres de prélèvement
  • Annexe E (informative) Exemple de fiche de prélèvement
  • Annexe F (informative) Mesure
  • Annexe G (informative) Exemple de calcul de l'activité volumique
  • Bibliographie
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