ISO INTERNATIONAL STANDARD 25457 Second edition 2023-10 Oil and gas industries including lower carbon energy Flare details for general refinery and petrochemical service Industries du pétrole et du gaz,y compris les énergies a faible teneur en carbone - Détails sur les torches d'usage genéral dans les raffineries etdanslesusines pétrochimiques Reference number IS0 25457:2023(E) ISO @IS02023 IS0 25457:2023(E) COPYRIGHT PROTECTED DOCUMENT @IS02023 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, withoutpriorwrittenpermission.Permission can berequestedfrom eitherIso at theaddress below orIso'smemberbodyinthecountryoftherequester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+4122 749 0111 Email: [email protected] Website: www.iso.org Published in Switzerland ii @IS0 2023 - All rights reserved