NF ISO 11665-7

NF ISO 11665-7

October 2012
Standard Cancelled

Measurement of radioactivity in the environment - Air : radon-222 - Part 7 : accumulation method for estimating surface exhalation rate

ISO 11665-7:2012 gives guidelines for estimating the radon-222 surface exhalation rate over a short period (a few hours), at a given place, at the interface of the medium (soil, rock, laid building material, walls, etc.) and the atmosphere. This estimation is based on measuring the radon activity concentration emanating from the surface under investigation and accumulated in a container of a known volume for a known duration.This method is estimative only, as it is difficult to quantify the influence of many parameters in environmental conditions. ISO 11665-7:2012 is particularly applicable, however, in case of an investigation, a search for sources or a comparative study of exhalation rates at the same site. ISO 11665-7:2012 does not cover calibration conditions for the rate estimation devices.

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Main informations

Collections

National standards and national normative documents

Thematics

Sécurité, Gestion des risques et SST, QSE

Publication date

October 2012

Number of pages

31 p.

Reference

NF ISO 11665-7

ICS Codes

13.280   Radiation protection
17.240   Radiation measurements
27.120.01   Nuclear energy in general

Classification index

M60-768

Print number

1 - 13/09/2012

International kinship

ISO 11665-7:2012
Sumary
Measurement of radioactivity in the environment - Air : radon-222 - Part 7 : accumulation method for estimating surface exhalation rate

ISO 11665-7:2012 gives guidelines for estimating the radon-222 surface exhalation rate over a short period (a few hours), at a given place, at the interface of the medium (soil, rock, laid building material, walls, etc.) and the atmosphere. This estimation is based on measuring the radon activity concentration emanating from the surface under investigation and accumulated in a container of a known volume for a known duration.

This method is estimative only, as it is difficult to quantify the influence of many parameters in environmental conditions. ISO 11665-7:2012 is particularly applicable, however, in case of an investigation, a search for sources or a comparative study of exhalation rates at the same site. ISO 11665-7:2012 does not cover calibration conditions for the rate estimation devices.

Replaced standards (1)
NF M60-768
October 2002
Standard Cancelled
Nuclear energy - Measurement of environmental radioactivity - Radon 222 : methods for estimation of the surfacic activity of exhalation by accumulation method

Le présent document donne des recommandations pour estimer le flux surfacique d'exhalation du radon 222, en un point donné et à un instant donné, aux interfaces avec l'atmosphère, à partir de la mesure de l'activité volumique du radon 222 à l'intérieur d'un conteneur d'accumulation. Il décrit le mode de prélèvement et les conditions d'utilisation. Il doit être utilisé conjointement avec les normes NF M 60-763, NF M 60-767 et NF M 60-769.

Standard replaced by (1)
NF EN ISO 11665-7
January 2016
Standard Current
Measurement of radioactivity in the environment - Air : radon-222 - Part 7 : accumulation method for estimating surface exhalation rate

ISO 11665-7:2012 gives guidelines for estimating the radon-222 surface exhalation rate over a short period (a few hours), at a given place, at the interface of the medium (soil, rock, laid building material, walls, etc.) and the atmosphere. This estimation is based on measuring the radon activity concentration emanating from the surface under investigation and accumulated in a container of a known volume for a known duration. This method is estimative only, as it is difficult to quantify the influence of many parameters in environmental conditions. ISO 11665-7:2012 is particularly applicable, however, in case of an investigation, a search for sources or a comparative study of exhalation rates at the same site. ISO 11665-7:2012 does not cover calibration conditions for the rate estimation devices.

Table of contents
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes, définitions et symboles
    1
  • 3.1 Termes et définitions
    1
  • 3.2 Symboles
    2
  • 4 Principe de la méthode de mesure pour l'estimation du flux surfacique d'exhalation
    3
  • 5 Équipement
    4
  • 6 Accumulation du radon dans un conteneur
    5
  • 6.1 Caractéristiques de l'accumulation
    5
  • 6.2 Durée d'accumulation
    5
  • 7 Prélèvement
    5
  • 7.1 Objectif du prélèvement
    5
  • 7.2 Caractéristiques du prélèvement
    6
  • 7.3 Durée du prélèvement
    6
  • 7.4 Volume d'air prélevé
    6
  • 8 Méthode de détection
    6
  • 9 Mesurage
    6
  • 9.1 Mode opératoire
    6
  • 9.2 Grandeurs d'influence
    7
  • 10 Expression des résultats
    8
  • 10.1 Flux surfacique d'exhalation du radon
    8
  • 10.2 Incertitude type
    8
  • 10.3 Seuil de décision et limite de détection
    8
  • 10.4 Limites de l'intervalle de confiance
    8
  • 11 Rapport d'essai
    8
  • Annexe A (informative) Exemple de Fiche des résultats de prélèvement
    10
  • Annexe B (informative) Estimation d'un flux surfacique d'exhalation du radon en utilisant une méthode de mesure en continu
    12
  • Annexe C (informative) Estimation d'un flux surfacique d'exhalation du radon en utilisant une méthode de mesure ponctuelle
    18
  • Bibliographie
    23
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