NEN-ISO 11665-9
Measurement of radioactivity in the environment - Air: Radon-222 - Part 9: Test methods for exhalation rate of building materials
| Organization: | NEN |
| Publication Date: | 1 February 2016 |
| Status: | active |
| Page Count: | 49 |
| ICS Code (Air quality in general): | 13.040.01 |
| ICS Code (Other standards related to air quality): | 13.040.99 |
| ICS Code (Radiation measurements): | 17.240 |
scope:
NEN-ISO 11665-9 specifies a method for the determination of the free radon exhalation rate of a batch of mineral based building materials. The standard only refers to 222Rn exhalation determination using two test methods: Liquid Scintillation Counting (LSC) and gamma ray spectrometry (Annex A and Annex B) The exhalation of thoron (220Rn) does not affect the test result when applying the determination methods described in this part of the standard.
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