EN ISO 20045:2024

Measurement of the radioactivity in the environment - Air: tritium - Test method using bubbler sampling (ISO 20045:2023, including corrected version 2023-09) EN ISO 20045:2024

Publication date:   Sep 18, 2024

General information

60.60 Standard published   Jul 17, 2024

CEN

CEN/TC 430 Nuclear energy, nuclear technologies, and radiological protection

European Norm

13.040.01   Air quality in general | 17.240   Radiation measurements

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Scope

This document describes a test method to determine the activity concentration of atmospheric tritium by trapping tritium in air by bubbling through a water solution.
The formulae are given for a sampling system with four bubblers. They can also be applied to trapping systems with only one trapping module consisting of two bubblers if only tritiated water vapour (HTO) is in the atmosphere to be sampled.
This document does not cover laboratory test sample results, in becquerel per litre of trapping solution, according to ISO 9698 or ISO 13168.
The test method detection limit result is between 0,2 Bq∙m-3 and 0,5 Bq∙m-3 when the sampling duration is about one week.

Life cycle

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PUBLISHED
EN ISO 20045:2024
60.60 Standard published
Jul 17, 2024

Relations

Adopted from ISO 20045:2023 IDENTICAL