ISO INTERNATIONAL STANDARD 7076-4 First edition 2016-07-01 Fire protection Foam fire extinguishing systems - Part 4: High expansion foam equipment Protection contre I'incendie - Systemes d'extinction d'incendie a mousse Partie 4: Equipement pour mousse a haut foisonnement Reference number IS0 7076-4:2016(E) ISO International Organization for Standardization @ IS0 2016 HEJIANG INSTOFSTANDARDIZATION C15956617 vided by IHS underI ed without license from IHS IS0 7076-4:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, Published in Switzerland All rights reserved. Unless otherwise specified, 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. IsOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org PrganizationforStandardization ensee-ZHEJIANG INSTOF STANDARDIzARoISQ16- All rights reserved etworking permitted without license from IHS IS0 7076-4:2016(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references 3 Terms and definitions 4 Requirements 2 4.1 Connections 2 4.1.1 Permanent connections and joints .2 4.1.2 Bolting of pressure-retaining parts 22 4.2 Parts for removal during routine field maintenance 4.2.1 Removal 2 4.2.2 Re-assembly 2 4.3 Corrosion resistance of metal parts 3 4.4 Elastomeric joint rings 3 4.4.1 General. 3 4.4.2 Resistance to aging. 3 4.4.3 Resistance to exposure to liquids .3 4.5 Plastics and reinforced resin materials 3 4.5.1 General. .3 4.5.2 Resistance to ageing. 4 4.5.3 Resistance to exposure to liquids 4.6 Strength. 4 4.7 Leak resistance 4.8 Discharge coefficient (K factor) 4 4.9 Foam quality and foam capacity 5 4.10 Waterflow... .5 4.11 Operation reliability .5 4.12 Stress corrosion 4.13 Salt-spray corrosion. .5 4.14 Light and water exposure .5 4.15 Heat and fire resistance. . 6 5 Test methods. .6 5.1 General ..6 5.2 Ageing test for plastics and reinforced resin materials .6 5.3 Liquid exposure test. .6 5.4 Equipment pressurization test. .6 5.5 Leak resistance test. .6 5.6 Flow coefficient measurement. . 6 5.7 Measurement of foam capacity and foam quality .7 5.8 Water flow test. .7 5.9 Operation reliability test 7 5.10 Stress corrosion test. 7 5.11 Salt-spray corrosion test. .8 5.12 Light and water exposure test .9 5.13 Heat and fire resistance .9 Marking .9 6 7 Manufacturer's installation and operation instructions ..9 Annex A (normative) Tolerances ..10 Bibliography .11 iii ISee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ed without license from IHS Not for Resale, 2016/9/22 06:39:30