NF M60-312-1

NF M60-312-1

June 2019
Standard Cancelled

Nuclear energy - Measurement of radioactivity in the environment - Determination of tritium activity in the air - Part 1 : determination of the activity concentration of atmospheric tritium sampled by the sparging technique (air through water)

Le présent document décrit une méthode de prélèvement par barbotage pour déterminer la teneur en tritium (vapeur et/ou gaz) de l'air dans l'environnement. La limite de détection de cette méthode est de l'ordre de 0,2 Bq.m-3 à 0,5 Bq.m-3 pour une durée de prélèvement d'environ une semaine.

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Main informations

Collections

National standards and national normative documents

Thematics

Sécurité, Gestion des risques et SST, QSE

Publication date

June 2019

Number of pages

37 p.

Reference

NF M60-312-1

ICS Codes

13.280   Radiation protection
17.240   Radiation measurements
27.120.01   Nuclear energy in general

Classification index

M60-312-1

Print number

3 - 01/12/2021
Sumary
Nuclear energy - Measurement of radioactivity in the environment - Determination of tritium activity in the air - Part 1 : determination of the activity concentration of atmospheric tritium sampled by the sparging technique (air through water)

Le présent document décrit une méthode de prélèvement par barbotage pour déterminer la teneur en tritium (vapeur et/ou gaz) de l'air dans l'environnement. La limite de détection de cette méthode est de l'ordre de 0,2 Bq.m-3 à 0,5 Bq.m-3 pour une durée de prélèvement d'environ une semaine.
Replaced standards (1)
NF M60-312
October 1999
Standard Cancelled
Nuclear energy. Measurement of environmental radioactivity-Air. Determination by liquid scintillation of the activity concentration of atmospheric tritium sampled by the sparging technique (air through water)

Le présent document permet de déterminer l'activité volumique du tritium (vapeur et gaz) dans l'air. Il décrit le mode de prélèvement et la technique de comptage.

Standard replaced by (1)
NF ISO 20045
July 2023
Standard Current
Measurement of the radioactivity in the environment - Air: tritium - Test method using bubbler sampling

<p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">This document describes a test method to determine the activity concentration of atmospheric tritium by trapping tritium in air by bubbling through a water solution. Atmospheric tritium activity concentration levels are expressed in becquerel per cubic metre (Bq∙m<sup>-3</sup>).</span></p> <p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">The formulae are given for a sampling system with four bubblers. They can also be applied to trapping systems with only one trapping module consisting of two bubblers if only tritiated water vapour (HTO) is in the atmosphere to be sampled.</span></p> <p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">This document does not cover laboratory test sample results, in becquerel per litre of trapping solution, according to <span class="stdpublisher"><span style="color: black; mso-color-alt: windowtext;">ISO</span></span> <span class="stddocNumber"><span style="color: black; mso-color-alt: windowtext;">9698</span></span> or <span class="stdpublisher"><span style="color: black; mso-color-alt: windowtext;">ISO</span></span> <span class="stddocNumber"><span style="color: black; mso-color-alt: windowtext;">13168</span></span>.</span></p> <p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">The test method detection limit result is between 0,2 Bq∙m<sup>-3</sup> and 0,5 Bq∙m<sup>-3</sup> when the sampling duration is about one week.</span></p>

Table of contents
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  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions et unités de grandeurs utilisés
  • 4 Principe
  • 5 Prélèvement
  • 6 Activité volumique du tritium dans les solutions de piégeage
  • 7 Calcul de l'activité volumique du tritium dans l'atmosphère
  • 8 Rapport d'essai
  • Annexe A (informative) Fiche technique pour le tritium
  • Annexe B (informative) Rendements de piégeage
  • Annexe C (informative) Conditions de conservation des solutions d'eau tritiée
  • Annexe D (informative) Exemple de fiche pour un système de barbotage à 4 pots
  • Annexe E (informative) Exemple de calcul des activités volumiques de tritium dans l'air
  • Bibliographie
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