Standard NBN ISO 11665-9:2020

Measurement of radioactivity in the environment — Air: Radon-222 — Part 9: Test methods for exhalation rate of building materials (ISO 11665-9:2019)
Status
:
Active
Publication date
:
10/2020
Languages
:
EN/FR
ICS
:
17.240 Radiation measurements
Summary :
This document specifies a method for the determination of the free radon exhalation rate of a batch of mineral based building materials. This document only refers to 222Rn exhalation determination using two test methods: liquid Scintillation Counting (LSC) and gamma ray spectrometry (see Annex A and Annex B). The exhalation of thoron (220R
n) does not affect the test result when applying the determination methods described in this document.
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