NF ISO 8690

NF ISO 8690

December 2020
Standard Cancelled

Measurement of radioactivity - Gamma ray and beta emitting radionuclides - Test method to assess the ease of decontamination of surface materials

This document applies to the testing of surfaces that may become contaminated by radioactive materials.The ease of decontamination is a property of a surface and an important criterion for selecting surface materials used in the nuclear industry, interim storage or disposal facilities from which contamination can be removed easily and rapidly without damaging the surface. The test described in this document is a rapid laboratory-based method to compare the ease of decontamination of different surface materials.The results from the test can be one parameter to take into account when selecting surface coatings such as varnish or impervious layers such as ceramics and other surfaces. The radionuclides used in this test are those commonly found in the nuclear industry (137Cs, 134Cs and 60Co) in aqueous form. The test can also be adopted for use with other radionuclides and other chemical forms, depending on the customer requirements, if the solutions are chemically stable and do not corrode the test specimen.The test does not measure the ease of decontamination of the surface materials in practical use, as this depends on the radionuclide(s) present, their chemical form, the duration of exposure to the contaminant and the environmental conditions amongst other factors.The test method is not intended to describe general decontamination procedures or to assess the efficiency of decontamination procedures (see ISO 7503 series).The test method is not suitable for use of radiochemicals if the radionuclide emit low energy gamma rays or beta particles that are readily attenuated in the surface.

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Main informations

Collections

National standards and national normative documents

Thematics

Sécurité, Gestion des risques et SST, QSE

Publication date

December 2020

Number of pages

42 p.

Reference

NF ISO 8690

ICS Codes

13.280   Radiation protection
17.240   Radiation measurements

Classification index

M60-750

Print number

1

International kinship

ISO 8690:2020
Sumary
Measurement of radioactivity - Gamma ray and beta emitting radionuclides - Test method to assess the ease of decontamination of surface materials

This document applies to the testing of surfaces that may become contaminated by radioactive materials.

The ease of decontamination is a property of a surface and an important criterion for selecting surface materials used in the nuclear industry, interim storage or disposal facilities from which contamination can be removed easily and rapidly without damaging the surface. The test described in this document is a rapid laboratory-based method to compare the ease of decontamination of different surface materials.

The results from the test can be one parameter to take into account when selecting surface coatings such as varnish or impervious layers such as ceramics and other surfaces. The radionuclides used in this test are those commonly found in the nuclear industry (137Cs, 134Cs and 60Co) in aqueous form. The test can also be adopted for use with other radionuclides and other chemical forms, depending on the customer requirements, if the solutions are chemically stable and do not corrode the test specimen.

The test does not measure the ease of decontamination of the surface materials in practical use, as this depends on the radionuclide(s) present, their chemical form, the duration of exposure to the contaminant and the environmental conditions amongst other factors.

The test method is not intended to describe general decontamination procedures or to assess the efficiency of decontamination procedures (see ISO 7503 series).

The test method is not suitable for use of radiochemicals if the radionuclide emit low energy gamma rays or beta particles that are readily attenuated in the surface.

Replaced standards (1)
NF ISO 8690
November 1989
Standard Cancelled
Decontamination of radioactively contaminated surfaces. Method for testing and assessing the ease of decontamination.

Is designed to obtain data allowing the comparison of the ease of decontamination of different surface materials and can be used for comparative tests with any radionuclide in aqueous solution. Comparison is based on the mean residual pulse rates. In order to allow the general qualifications of a surface material as a single product, a method based on contamination by solutions containing Co-60 and Cs-137 is specified. Decontaminability data obtained are not applicable to technical systems.

Standard replaced by (1)
NF ISO 8690
October 2024
Standard Current
Measurement of radioactivity - Gamma ray and beta emitting radionuclides - Test method to assess the ease of decontamination of surface materials

This document applies to the testing of surfaces that may become contaminated by radioactive materials. The ease of decontamination is a property of a surface and an important criterion for selecting surface materials used in the nuclear industry, interim storage or disposal facilities from which contamination can be removed easily and rapidly without damaging the surface. The test described in this document is a rapid laboratory-based method to compare the ease of decontamination of different surface materials. The results from the test can be one parameter to take into account when selecting surface coatings such as varnish or impervious layers such as ceramics and other surfaces. The radionuclides used in this test are those commonly found in the nuclear industry (137Cs, 134Cs and 60Co) in aqueous form. The test can also be adopted for use with other radionuclides and other chemical forms, depending on the customer requirements, if the solutions are chemically stable and do not corrode the test specimen. The test does not measure the ease of decontamination of the surface materials in practical use, as this depends on the radionuclide(s) present, their chemical form, the duration of exposure to the contaminant and the environmental conditions amongst other factors. The test method is not intended to describe general decontamination procedures or to assess the efficiency of decontamination procedures (see ISO 7503-1 to ISO 7503-3). The test method is not suitable for use of radiochemicals if the radionuclide emits low energy gamma rays or beta particles that are readily attenuated in the surface.

Table of contents
  • Avant-propos
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes, définitions et symboles
  • 4 Principe
  • 5 Appareillage
  • 6 Agents de contamination et de décontamination
  • 7 Échantillons pour essai
  • 8 Mode opératoire
  • 9 Calcul des résultats et évaluation de l'aptitude à la décontamination
  • 10 Rapport d'essai
  • Annexe B (normative) Agitateur d'enceinte pour la décontamination
  • Annexe A (informative) Support pour la contamination de l'échantillon pour essai
  • Annexe C (informative) Formules pour la préparation des solutions contaminantes de 137 Cs et 60 Co
  • Annexe D (informative) Calculs pour la production de la solution contaminante par activation neutronique
  • Annexe E (informative) Exemple de rapport d'essai
  • Bibliographie
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