CEN/TR 17113:2017

European foreword
Introduction
1 Scope
2 Terms and definitions
3 European Regulatory Framework
4 Provisions for dose assessment
Annex A (informative) - Calculation of external
        gamma dose rate
Annex B (informative) - Examples of dose
        assessment using Table 2
Annex C (informative) - Estimate of indoor gamma
        dose based on mass per unit area as control parameter
Annex D (informative) - Validation of the dose
        modelling and a density corrected index
        formula
Annex E (informative) - Considerations on and
        justification for choosing an appropriate room
        size
Bibliography

The aim of this Technical Report is to propose a methodology to determine indoor gamma dose from building materials and to help classify such a product as required in the Construction Products Regulation [7]. This first technical approach could be a precursor for the development of a harmonized European Standard based on this methodology.NOTE 1In this Technical Report, doses from radon and thoron exhalation are excluded. However, in 3.3, information is given on how radon exhalation is dealt with in (EU)2013/59/Euratom, the Basic Safety Standards Directive (2013/59/EURATOM) [1].NOTE 2Compliance with national exemption levels for NORM nuclides remains.