标准编号：ISO 8690:2020
中文名称：放射性的测量 放射伽玛射线和放射放射性核素 评定表面材料去污容易程度的试验方法
英文名称：Measurement of radioactivity — Gamma ray and beta emitting radionuclides — Test method to assess the ease of decontamination of surface materials
发布日期：2020-09
标准范围
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
137 134 60
this test are those commonly found in the nuclear industry ( Cs, Cs and Co) 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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