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Edition 1.0 2024-05
INTERNATIONAL
STANDARD
Explosive atmospheres –
Part 49: Flame arresters – Performance requirements, test methods and limits
for use
ISO/IEC 80079-49:2024-05(en)
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ISO/IEC 80079-49
Edition 1.0 2024-05
INTERNATIONAL
STANDARD
Explosive atmospheres –
Part 49: Flame arresters – Performance requirements, test methods and limits
for use
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.220.10 ISBN 978-2-8322-8716-3
Warning! Make sure that you obtained this publication from an authorized distributor.
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– 2 – ISO/IEC 80079-49:2024 © ISO/IEC 2024
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
4 Abbreviated terms and symbols . 13
5 Hazards and flame arrester classifications . 14
5.1 Flame transmission classification: deflagration, stable and unstable
detonation . 14
5.2 Flame transmission classification: stabilized burning . 15
5.3 Index of tests . 15
6 General requirements . 16
6.1 Measuring instruments . 16
6.2 Flow measurement (air) .
...