IEC 61577-4:2009

Radiation protection instrumentation - Radon and radon decay product measuring instruments - Part 4: Equipment for the production of reference atmospheres containing radon isotopes and their decay products (STAR)

IEC 61577-4:2009 concerns the System for Test Atmospheres with Radon (STAR) needed for testing, in a reference atmosphere, the instruments measuring radon and RnDP. Provides guidance for those facing problems associated with the production of equipment for setting up reference atmospheres for radon and its decay products.

Instrumentation pour la radioprotection - Instruments de mesure du radon et des descendants du radon - Partie 4: Dispositif pour la réalisation d'atmosphères de référence contenant des isotopes du radon et leurs descendants (STAR)

La CEI 61577-4:2009 concerne le Système de Test en Atmosphères contenant du Radon (STAR) servant à tester, dans une atmosphère de référence, les instruments mesurant le radon et les RnDP. Est un guide à l'attention de ceux qui se trouvent confrontés aux problèmes associés à la mise en place du matériel nécessaire pour la création des atmosphères de référence pour le radon et ses descendants.

General Information

• Status: Published
• Publication Date: 25-Feb-2009
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 13.280 - Radiation protection
• Technical Committee: SC 45B - Radiation protection instrumentation
• Drafting Committee: WG 10 - TC 45/SC 45B/WG 10
• Current Stage: PPUB - Publication issued
• Start Date: 15-Mar-2009
• Completion Date: 26-Feb-2009

Standards Content (Sample)

IEC 61577-4 ®
Edition 1.0 2009-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Radiation protection instrumentation – Radon and radon decay product
measuring instruments –
Part 4: Equipment for the production of reference atmospheres containing radon
isotopes and their decay products (STAR)

Instrumentation pour la radioprotection – Instruments de mesure du radon et
des descendants du radon –
Partie 4: Dispositif pour la réalisation d’atmosphères de référence contenant des
isotopes du radon et leurs descendants (STAR)

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IEC 61577-4 ®
Edition 1.0 2009-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Radiation protection instrumentation – Radon and radon decay product
measuring instruments –
Part 4: Equipment for the production of reference atmospheres containing
radon isotopes and their decay products (STAR)

Instrumentation pour la radioprotection – Instruments de mesure du radon et
des descendants du radon –
Partie 4: Dispositif pour la réalisation d’atmosphères de référence contenant
des isotopes du radon et leurs descendants (STAR)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
U
CODE PRIX
ICS 13.280 ISBN 978-2-88910-545-8
– 2 – 61577-4 © IEC:2009
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope and object.7
2 Normative references .7
3 Terms, definitions and units.8
3.1 General terms and definitions.8
3.2 Specific terms and definitions.9
3.3 Units and conversion factors .12
4 General description of a System for Test Atmospheres with Radon (STAR).13
4.1 General .13
4.2 Mode of operation of a STAR .14
4.2.1 Static mode of operation.14
4.2.2 Dynamic mode of operation .14
5 Characteristics of a STAR .15
5.1 General .15
5.2 STAR for radon .16
5.2.1 General .16
5.2.2 Technical characteristics of STAR containers .16
5.2.3 Radon sources .16
222 220
5.2.4 Rn and Rn analysis and control.17
5.2.5 Analysis and control of climatic parameters .18
5.3 STAR for radon and RnDP .18
5.3.1 General .18
5.3.2 Technical characteristics of STAR containers .18
5.3.3 RnDP sources .18
5.3.4 RnDP analysis and control.19
5.3.5 Sampling flow rate of equipment under test .19
5.3.6 Analysis and control of climatic parameters .20
6 Requirements for the reference atmosphere provided by STAR .20
6.1 General .20
6.2 Reference conditions.20
6.3 Influence quantities .21
6.3.1 General .21
6.3.2 Temperature.22
6.3.3 Relative humidity.22
6.3.4 Atmospheric pressure.22
6.3.5 Ambient gamma field .23
6.3.6 Working range for exposure to RnDP.23
6.3.7 Working range for aerosols.23
6.3.8 Exposure time for the instrument under test.23
7 Calibration and traceability of measurement methods and instruments used in a
STAR .23
7.1 Traceability chains .23
7.2 Quality assurance .24
Annex A (informative) Characteristics of atmospheres that can be simulated in a
STAR.25

61577-4 © IEC:2009 – 3 –
Bibliography.27

Figure 1 – Components of a STAR: general case.13
Figure 2 – Minimum requirements for a STAR.14
Figure 3 – Dynamic mode of operation of a STAR.15

Table 1 – Reference and standard test conditions.21
Table 2 – Tests with variation of the influence quantities .21
Table A.1 – Atmosphere characteristic ranges (typical values).26

– 4 – 61577-4 © IEC:2009
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RADIATION PROTECTION INSTRUMENTATION –
RADON AND RADON DECAY PRODUCT
MEASURING INSTRUMENTS –
Part 4: Equipment for the production of reference atmospheres
containing radon isotopes and their decay products (STAR)

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