Read Online or Download BS ISO 18589-1:2005: Measurement of radioactivity in the environment. Soil. Part 1: General guidelines and definitions PDF
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Extra info for BS ISO 18589-1:2005: Measurement of radioactivity in the environment. Soil. Part 1: General guidelines and definitions
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This subjective selection of the sampling points may be combined with a statistical approach to meet the quality requirements for the interpretation. When the spatial radioactivity distribution is unknown, it is necessary to adopt an orientated spatially random strategy. Probabilistic strategies with random sampling (random distribution of sampling points) are suitable only if the distribution of the radioactivity on the site is considered homogeneous. For a site with occasional heterogeneities (point sources), the implementation of a systematic sampling strategy that is dependant upon the degree of knowledge of the distribution of these heterogeneities in the different sampling areas is recommended.
3 Procedure With consideration for the composition of the test sample, the following steps shall be carried out. ⎯ Weigh the laboratory sample. ⎯ Spread a thin layer of 1 cm to 2 cm of the entire initial test sample onto flat containers and manually break up the sample using a suitable instrument. ). ⎯ Leave the sample to dry at ambient temperature or in a ventilated cabinet heated to a temperature less than 40 °C for 24 h to 48 h, according to the moisture in the sample. ⎯ Break up the remaining clods of earth with suitable equipment.
BS ISO 18589-1:2005: Measurement of radioactivity in the environment. Soil. Part 1: General guidelines and definitions by BSI