NF ISO 18589-5

NF ISO 18589-5

May 2009
Standard Cancelled

Measurements of radioactivity in the environment - Soil - Part 5 : measurement of strontium 90

ISO 18589-5:2009 describes the principles for the measurement of the activity of 90Sr in equilibrium with 90Y and 89Sr, pure beta-emitting radionuclides, in soil samples. Different chemical separation methods are presented to produce strontium and yttrium sources, the activity of which is determined using proportional counter (PC) or liquid scintillation counter (LSC). The selection of the measuring method depends on the origin of the contamination, the characteristics of the soil being analysed, the required accuracy of measurement and the resources of the available laboratories. These methods are used for soil monitoring following past or present, accidental or routine, liquid or gaseous discharges. It also covers the monitoring of contamination caused by global fallout. In the case of recent fallout immediately following a nuclear accident, the contribution of 89Sr to the total amount of strontium activity is not negligible. ISO 18589-5:2009 provides the measurement method to determine the activity of 90Sr in the presence of 89Sr.

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Main informations

Collections

National standards and national normative documents

Thematics

Sécurité, Gestion des risques et SST, QSE

Publication date

May 2009

Number of pages

39 p.

Reference

NF ISO 18589-5

ICS Codes

13.280   Radiation protection
17.240   Radiation measurements
27.120.01   Nuclear energy in general

Classification index

M60-790-5

Print number

1 - 20/05/2009

International kinship

ISO 18589-5:2009
Sumary
Measurements of radioactivity in the environment - Soil - Part 5 : measurement of strontium 90

ISO 18589-5:2009 describes the principles for the measurement of the activity of 90Sr in equilibrium with 90Y and 89Sr, pure beta-emitting radionuclides, in soil samples. Different chemical separation methods are presented to produce strontium and yttrium sources, the activity of which is determined using proportional counter (PC) or liquid scintillation counter (LSC). The selection of the measuring method depends on the origin of the contamination, the characteristics of the soil being analysed, the required accuracy of measurement and the resources of the available laboratories.

These methods are used for soil monitoring following past or present, accidental or routine, liquid or gaseous discharges. It also covers the monitoring of contamination caused by global fallout.

In the case of recent fallout immediately following a nuclear accident, the contribution of 89Sr to the total amount of strontium activity is not negligible. ISO 18589-5:2009 provides the measurement method to determine the activity of 90Sr in the presence of 89Sr.

Replaced standards (1)
NF M60-790-7
July 1999
Standard Cancelled
Nuclear energy. Measurement of radioactivity in the environment-Soil. Part 7 : methodology for strontium 90 activity measurement in soil samples.

Le présent document présente les principes et les difficultés de la détermination de l'activité du strontium 90 dans les échantillons de sol et propose en annexe trois méthodes de mesure.

Standard replaced by (1)
NF ISO 18589-5
August 2020
Standard Cancelled
Measurement of radioactivity in the environment - Soil - Part 5 : strontium 90 - Test method using proportional counting or liquid scintillation counting

<p>This document describes the principles for the measurement of the activity of <sup>90</sup>Sr in equilibrium with <sup>90</sup>Y and <sup>89</sup>Sr, pure beta emitting radionuclides, in soil samples. Different chemical separation methods are presented to produce strontium and yttrium sources, the activity of which is determined using proportional counters (PC) or liquid scintillation counters (LSC). <sup>90</sup>Sr can be obtained from the test samples when the equilibrium between <sup>90</sup>Sr and <sup>90</sup>Y is reached or through direct <sup>90</sup>Y measurement. The selection of the measuring method depends on the origin of the contamination, the characteristics of the soil to be analysed, the required accuracy of measurement and the resources of the available laboratories.</p> <p>These methods are used for soil monitoring following discharges, whether past or present, accidental or routine, liquid or gaseous. It also covers the monitoring of contamination caused by global nuclear fallout.</p> <p>In case of recent fallout immediately following a nuclear accident, the contribution of <sup>89</sup>Sr to the total amount of strontium activity will not be negligible. This standard provides the measurement method to determine the activity of <sup>90</sup>Sr in presence of <sup>89</sup>Sr.</p> <p>The test methods described in this document can also be used to measure the radionuclides in sludge, sediment, construction material and products by following proper sampling procedure.</p> <p>Using samples sizes of 20 g and counting times of 1 000 min, detection limits of (0,1 to 0,5) Bq·kg<sup>-1</sup> can be achievable for <sup>90</sup>Sr using conventional and commercially available proportional counter or liquid scintillation counter when the presence of <sup>89</sup>Sr can be neglected. If <sup>89</sup>Sr is present in the test sample, detection limits of (1 to 2) Bq·kg<sup>-1</sup> can be obtained for both <sup>90</sup>Sr and <sup>89</sup>Sr using the same sample size, counting time and proportional counter or liquid scintillation counter as in the previous situation.</p>

Table of contents
View the extract
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes, définitions et symboles
    2
  • 4 Principe
    3
  • 5 Réactifs et appareillage
    4
  • 6 Mode opératoire
    5
  • 7 Expression des résultats
    8
  • 8 Rapport d'essai
    14
  • Annexe A (informative) Préparation de la prise d'essai
    16
  • Annexe B (informative) Mesurage du strontium par précipitation
    18
  • Annexe C (informative) Mesurage du 90Sr à partir de son descendant 90Y en équilibre, par extraction organique
    24
  • Annexe D (informative) Mesurage du strontium après séparation sur une résine spécifique en éthercouronne"28
  • Bibliographie31
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