ISO INTERNATIONAL STANDARD 7076-3 First edition 2016-07-01 Fire protection Foam fire extinguishing systems - Part 3: Medium expansion foam equipment Protection contre I'incendie - Systemes d'extinction d'incendie a mousse- Partie 3: Equipement pour mousse a moyen foisonnement Reference number X IS0 7076-3:2016(E) ISO International Organization for Standardization e=ZHEJIANG INST OF STANDARDIZATION C1 5956617 @IS02016 mitted without license from IHS IS0 7076-3:2016(E) COPYRIGHT PROTECTED DOCUMENT 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 written permission. Permission can be requested from either Iso at the address below or Iso's member body in the country of the requester. ISO copyrightoffice 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 Licensee-ZHEJIANG INST OF STANDARDIZoISQ6 -All rights reserved Not for Resale, 2016/8/16 08:32:31 No reproduction or networking permited without license from IHS IS0 7076-3:2016(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 2 2 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. 2 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. 3 4.5.3 Resistance to exposure to liquids .4 4.6 Strength.. .4 4.7 Leak resistance .4 4.8 Discharge coefficient (K factor) .4 4.9 Foam quality. 4 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. .5 Test methods. .5 5.1 General 5.2 Ageing test for plastics and reinforced resin materials .6 5.3 Liquidexposuretest ..6 5.4 Equipment pressurization test. .6 5.5 Leak resistance test. .6 5.6 Flow coefficient measurement. .6 5.7 Measurement of expansion ratio and drainage time .6 5.8 Water flow test. 5.9 Operation reliability test .7 5.10 Stress corrosion test. 5.11 Salt-spray corrosion test. ..8 5.12 Light and water exposure test ..8 5.13 Heatandfireresistancetest.. ..8 6 Marking ..8 7 Manufacturer's installation and operation instructions .9 Annex A (normative) Tolerances. .10 Bibliography ..11 ii Licensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ted without license from IHS