Strålningsmätning

Kommittébeteckning: SIS/TK 405 (Kärnenergi)
Källa: CEN
Svarsdatum: den 8 jan 2019
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This document describes a method for determining the Oxygen-to-Metal (O/M) ratio in mixed uranium-plutonium oxide (U,Pu)O2 ± X pellets. The parameters given in the following paragraphs are relevant for pellets within a range of O/M ratio corresponding to 1,98 to 2,01. The method described in the document is adapted, with regard to the parameters, if the expected values of O/M ratio are outside the range.

Kommittébeteckning: SIS/TK 405 (Kärnenergi)
Källa: CEN
Svarsdatum: den 8 jan 2019
Se merSe mindre
 

This part of ISO 11665 describes radon-222 test methods for soil gas using passive and active in-situ

sampling at depth comprised between surface and 2 m.

This part of ISO 11665 gives general requirements for the sampling techniques, either passive or active

and grab or continuous, for in-situ radon-222 activity concentrations measurement in soil gas.

The radon-222 activity concentration in the soil can be measured by spot or continuous measurement

methods (see ISO 11665-1). In case of spot measurement methods (ISO 11665-6), the soil gas sampling

is active only. On the other hand, the continuous methods (ISO 11665-5) are typically associated with

passive soil gas sampling.

The measurement methods are applicable to all types of soil and are determined according to the end

use of the measurement results (phenomenological observation, definition or verification of mitigation

techniques, etc.) taking into account the expected level of the radon-222 activity concentration.

These measurement methods are applicable to soil gas samples with radon activity concentrations

greater than 100 Bq/m3.

NOTE This part of ISO 11665 is complementary with ISO 11665-7 for characterization of the radon soil

potential.