ISO INTERNATIONAL STANDARD 16733-1 First edition 2015-09-01 Fire safety engineering Selection of design fire scenarios and design fires - Part 1: Selection of design fire scenarios Ingénierie de la sécurité incendie - Sélection de scénarios d'incendie etdefeuxdedimensionnement- Partie 1: Sélection de scénarios d'incendie de dimensionnement Reference number IS0 16733-1:2015(E) SO International Organization for Standardization @ IS0 2015 dardization5956617 ed without license from IHS IS0 16733-1:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS02015,PublishedinSwitzerland 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. 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 [email protected] www.iso.org PrganizationforStandardization etworking permitted without license from IHS IS0 16733-1:2015(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions 4 Symbols and abbreviated terms ..2 5 Fire safety engineering applications .3 5.1 Fire safety engineering process. .3 5.1.1 Establish project scope ..3 5.1.2 Identify fire safety objectives. .4 5.1.3 Determine functional requirements ..4 5.1.4 Identify performance criteria. 4 5.1.5 Hazard identification. .4 5.1.6 Fire safety design plan 4 5.2 The role of design fire scenarios in fire safety design 5.3 The role of design fires in fire safety design. .5 6 Design fire scenarios .6 6.1 Characteristics of fire scenarios . 6 6.2 Identification of fire scenarios. .6 6.2.1 General .6 6.2.2 Step 1 - Identify the specific safety challenges .8 6.2.3 Step 2 - Location of fire .9 6.2.4 Step3 Type of fire.. .10 6.2.5 Step 4— Potential complicating hazards leading to other fire scenarios ..11 6.2.6 Step 5- Systems and features impacting on fire. 11 6.2.7 Step 6 - Occupant actions impacting on fire. .12 6.3 Step 7 Selection of design fire scenarios. ..12 6.3.1 General ..12 6.3.2 Combining scenarios into scenario clusters ..12 6.3.3 Caution on exclusion of scenarios believed to have negligible risk .12 6.3.4 Demonstrating that the scenario structure is complete .13 6.3.5 Scenario selection procedure based on level of analysis .13 6.3.6 Selection of design fire scenarios fordeterministic analysis. .13 6.4 Step 8 - Modify scenario selection based on system availability and reliability ..14 6.5 Step 9 Final selection and documentation. .15 Annex A (informative) Data for development of design fire scenarios. ..16 Annex B (informative) Example of a set of explicit fire scenarios. ..18 Annex C (informative) Design fires ..21 Bibliography .30 iii Institute of Standardization 5956617 vithoutlicense from IHS