ISO/TC 85/SC 2
| Project No. | ISO 11665-2:2019 |
|---|---|
| Title | <p>This document describes integrated measurement methods for short-lived radon‑222 decay products<sup>[</sup><sup>4</sup><sup>]</sup>. It gives indications for measuring the average potential alpha energy concentration of short‑lived radon-222 decay products in the air and the conditions of use for the measuring devices.</p> <p>This document covers samples taken over periods varying from a few weeks to one year. This document is not applicable to systems with a maximum sampling duration of less than one week.</p> <p>The measurement method described is applicable to air samples with potential alpha energy concentration of short-lived radon-222 decay products greater than 10 nJ/m<sup>3</sup> and lower than 1 000 nJ/m<sup>3</sup>.</p> <p>NOTE For informative purposes only, this document also addresses the case of radon-220 decay products, given the similarity in behaviour of the radon isotopes 222 and 220.</p> |
| Registration number (WIID) | 76007 |
| Scope | <p>This document describes integrated measurement methods for short-lived radon‑222 decay products<sup>[</sup><sup>4</sup><sup>]</sup>. It gives indications for measuring the average potential alpha energy concentration of short‑lived radon-222 decay products in the air and the conditions of use for the measuring devices.</p> <p>This document covers samples taken over periods varying from a few weeks to one year. This document is not applicable to systems with a maximum sampling duration of less than one week.</p> <p>The measurement method described is applicable to air samples with potential alpha energy concentration of short-lived radon-222 decay products greater than 10 nJ/m<sup>3</sup> and lower than 1 000 nJ/m<sup>3</sup>.</p> <p>NOTE For informative purposes only, this document also addresses the case of radon-220 decay products, given the similarity in behaviour of the radon isotopes 222 and 220.</p> |
| Status | Standarts spēkā |
| ICS group | 13.040.01 17.240 |