ISO 11665-8:2019
Measurement of radioactivity in the environment — Air: radon-222 — Part 8: Methodologies for initial and additional investigations in buildings
This document specifies requirements for the determination of the activity concentration of radon in all types of buildings. The buildings can be single family houses, public buildings, industrial buildings, underground buildings, etc.
This document describes the measurement methods used to assess, during the initial investigation phase, the average annual activity concentration of radon in buildings. It also deals with investigations needed to identify the source, entry routes and transfer pathways of the radon in the building (additional investigations).
Finally, this document outlines the applicable requirements for the immediate post‑mitigation testing of the implemented mitigation techniques, monitoring of their effectiveness and testing of the sustainability of the building's behaviour towards radon.
This document does not address the technical building diagnostic or the prescription of mitigation work.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
4 Organization of the measuring stages
5 Initial investigations
5.1 Objective
5.2 Methodology followed during the initial investigation
5.3 Selection of measuring devices
5.4 Location of the measuring points
5.4.1 General
5.4.2 Determination and selection of the homogeneous zones
5.4.3 Number of measuring devices to be installed
5.4.4 Installation of measuring devices
5.5 Installation and removal of the measuring devices
5.6 Processing of the measuring devices
5.7 Data analysis
5.8 Initial investigation report
6 Additional investigations
6.1 General
6.2 Methodology for additional investigations
6.2.1 General
6.2.2 Building mapping
6.2.3 Identification of radon sources and entry routes
6.2.4 Identification of transfer pathways
6.3 Report of additional investigations
7 Immediate post-mitigation testing of the technical solutions applied
8 Control of the effectiveness of the technical solutions applied
9 Control of the sustainability
Annex A (informative) Examples of underground buildings and buried levels
Annex B (informative) Organization of radon measuring phases in a building
Annex C (informative) Initial investigation report
Annex D (informative) Example of analysis of initial investigation measurement results
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
4 Organization of the measuring stages
5 Initial investigations
5.1 Objective
5.2 Methodology followed during the initial investigation
5.3 Selection of measuring devices
5.4 Location of the measuring points
5.4.1 General
5.4.2 Determination and selection of the homogeneous zones
5.4.3 Number of measuring devices to be installed
5.4.4 Installation of measuring devices
5.5 Installation and removal of the measuring devices
5.6 Processing of the measuring devices
5.7 Data analysis
5.8 Initial investigation report
6 Additional investigations
6.1 General
6.2 Methodology for additional investigations
6.2.1 General
6.2.2 Building mapping
6.2.3 Identification of radon sources and entry routes
6.2.4 Identification of transfer pathways
6.3 Report of additional investigations
7 Immediate post-mitigation testing of the technical solutions applied
8 Control of the effectiveness of the technical solutions applied
9 Control of the sustainability
Annex A (informative) Examples of underground buildings and buried levels
Annex B (informative) Organization of radon measuring phases in a building
Annex C (informative) Initial investigation report
Annex D (informative) Example of analysis of initial investigation measurement results
Bibliography