ISO/IEC FDIS 80079-49

Explosive atmospheres — Part 49: Flame arresters — Performance requirements, test methods and limits for use

Atmosphères explosives — Partie 49: Arrête flammes — Exigences de performance, méthodes d’essai et limites d’utilisation

General Information

• Status: Not Published
• ICS: 13.220.20 - Fire protection
• Technical Committee: ISO/TMBG - Technical Management Board - groups
• Drafting Committee: ISO/TMBG - Technical Management Board - groups
• Current Stage: 5060 - Close of voting Proof returned by Secretariat
• Start Date: 01-Jan-2024
• Completion Date: 02-Jan-2024

Relations

• Revises: ISO 16852:2016 - Flame arresters — Performance requirements, test methods and limits for use
• Effective Date: 06-Jun-2022

Standards Content (Sample)

FINAL
INTERNATIONAL ISO/IEC
DRAFT
STANDARD FDIS
80079-49
ISO/TMBG
Explosive atmospheres —
Secretariat: ISO
Voting begins on:
Part 49:
2023-11-06
Flame arresters — Performance
Voting terminates on:
requirements, test methods and limits
2024-01-01
for use
Atmosphères explosives —
Partie 49: Arrête flammes — Exigences de performance, méthodes
d’essai et limites d’utilisation
Member bodies are requested to consult relevant national interests in IEC/SC
31M before casting their ballot to the e-Balloting application.
ISO/CEN PARALLEL PROCESSING
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/IEC FDIS 80079-49:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO/IEC 2023

---------------------- Page: 1 ----------------------
ISO/IEC FDIS 80079-49:2023(E)
FINAL
INTERNATIONAL ISO/IEC
DRAFT
STANDARD FDIS
80079-49
ISO/TMBG
Explosive atmospheres —
Secretariat: ISO
Voting begins on:
Part 49:
2023-11-06
Flame arresters — Performance
Voting terminates on:
requirements, test methods and limits
2024-01-01
for use
Atmosphères explosives —
Partie 49: Arrête flammes — Exigences de performance, méthodes
d’essai et limites d’utilisation
Member bodies are requested to consult relevant national interests in IEC/SC
31M before casting their ballot to the e-Balloting application.
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2023
ISO/CEN PARALLEL PROCESSING
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/IEC FDIS 80079-49:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO/IEC 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO/IEC 2023

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– 2 – ISO/IEC FDIS 80079-49 © IEC 2023
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 Abbreviated terms and symbols . 12
5 Hazards and flame arrester classifications . 13
5.1 Flame transmission classification: deflagration, stable and unstable
detonation . 13
5.2 Flame transmission classification: stabilized burning . 14
5.3 Index of tests . 14
6 General requirements . 15
6.1 Measuring instruments . 15
6.2 Flow measurement (air) . 16
6.3 Flame transmission test . 16
6.3.1 General .
...