ДСТУ CEN/TR 17113:2022 Будівельні вироби. Оцінювання викиду небезпечних речовин. Випромінювання від будівельних виробів дози гамма-випромінювання (CEN/TR 17113:2017, IDT)

ДСТУ CEN/TR 17113:2022
(CEN/TR 17113:2017, IDT)

Будівельні вироби. Оцінювання викиду небезпечних речовин. Випромінювання від будівельних виробів дози гамма-випромінювання

 
     
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

European foreword

Introduction

1 Scope

2 Terms and definitions

3 European Regulatory Framework

3.1 Provisions on radiation protection

3.2 Provisions on the marketing of construction products under the CPR

3.3 Radon exhalation from building materials

4 Provisions for dose assessment

4.1 General

4.2 Principle of calculation

4.3 Room model

4.4 Basic assumptions

4.4.1 General

4.4.2 Shielding effect of materials for cosmic radiation

4.4.3 Conversion factor for absorbed dose in air

4.4.4 Occupancy

4.4.5 Activity concentrations for reference concrete in Europe

4.5 Graded approach to dose assessment taking into account density and thickness

4.6 Assessment of indoor gamma exposure due to building materials and construction products

4.6.1 General

4.6.2 Composite material

4.6.3 Dose assessment for concrete coated with a layer of thin material

4.6.4 Roof tiles

4.6.5 Materials not complying to Formula (3)

4.6.6 Conclusive

Annex A (informative) Calculation of external gamma dose rate

A.1 Calculation of gamma dose rate

A.2 Parameters for a simple computer program

Annex B (informative) Examples of dose assessment using Table 2

B.1 Example 1: Exposure to gamma radiation in a concrete room where the 226Ra and 232Th concentrations are slightly above average

B.2 Example 2: Exposure to gamma radiation in a room where the walls are made of material with elevated 226Ra and 232Th concentrations and the floor and ceiling of typical concrete

B.3 Example 3: Exposure to gamma radiation in a room with concrete floor and ceiling, and cavity walls with brick and limestone

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

D.1 General

D.2 Calculations

D.3 Conclusion

Annex E (informative) Considerations on and justification for choosing an appropriate room size

E.1 General

E.2 Chosen dimensions for the model room

E.3 Calculation of values given in Table E.1

E.3.1 Rooms 1a and 1b, with dimensions 12 m x 7 m x 2,8 m

E.3.2 Rooms 2a and 2b, with dimensions 3 m x 4 m x 2,5 m

E.4 Specific dose rates from different structures in the EN 16516 model room

Bibliography