1、 IEC TR 61577-5 Edition 1.0 2019-07 TECHNICAL REPORT Radiation protection instrumentation Radon and radon decay product measuring instruments Part 5:General properties of radon and radon decay products and their measurement methods IEC TR 61577-5:2019-07(en)colourinside THIS PUBLICATION IS COPYRIGHT
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9、h and French extracted from the Terms and Definitions clause of IEC publications issued since 2002.Some entries have been collected from earlier publications of IEC TC 37,77,86 and CISPR.IEC TR 61577-5 Edition 1.0 2019-07 TECHNICAL REPORT Radiation protection instrumentation Radon and radon decay pr
10、oduct measuring instruments Part 5:General properties of radon and radon decay products and their measurement methods INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 13.280 ISBN 978-2-8322-7123-0 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained
11、this publication from an authorized distributor.colourinside 2 IEC TR 61577-5:2019 IEC:2019 CONTENTS FOREWORD.5 1 Scope.7 2 Normative references.7 3 Symbols,quantities and units.8 3.1 Symbols.8 3.2 Quantities and units.9 4 Radon in the environment.9 4.1 Origin,genesis and decay.9 4.2 Radon in the ro
12、cks and soils and its transport towards the atmosphere.10 4.3 Radon concentration in the outdoor air.11 4.4 Radon concentration in houses and at workplaces.11 5 Radon decay products in the atmosphere.12 5.1 Physical processes of decay products in gaseous media.12 5.2 Aerosol characteristics and vent
13、ilation.13 6 Physical and chemical properties of radon and radon decay products.14 6.1 Physical and chemical properties.14 6.2 Solubility of radon in liquids.14 6.3 Radiological properties and radioactive equilibrium.15 6.4 Interaction of alpha particles with matter and energy deposition.17 7 Measur
14、ement of 222Rn and 220Rn and their decay products.18 7.1 Relevant measurement quantities and units.18 7.1.1 Activity concentration(C).18 7.1.2 Equilibrium equivalent activity concentration(EEC,Ceq).18 7.1.3 Equilibrium factor(F).19 7.1.4 Exposure to radon(PRn).19 7.1.5 Potential alpha energy(p).20 7
15、.1.6 Potential alpha energy concentration(Cp).20 7.1.7 Potential alpha energy exposure(Pp).22 7.1.8 The unattached and attached fraction of potential alpha energy concentration.22 7.2 Instruments measuring airborne radon activity concentration.22 7.3 Measurement of radon decay products.23 7.3.1 Gene
16、ral overview of instruments.23 7.3.2 Sampling of the unattached radon decay products.24 7.3.3 Counting methods for the measurement of the activity concentrations and the potential alpha-energy concentration.25 8 Quality assurance.30 8.1 Definition and purpose.30 8.2 Quality control.31 8.3 Validation and traceability of measurements.31 8.3.1 Validation of methods.31 8.3.2 Type test of radon instruments.31 8.3.3 Interlaboratory comparison.31 8.3.4 Measurement traceability and calibration.32 9 Dete