ISO/TS TECHNICAL SPECIFICATION 19700 Second edition 2016-09-15 Controlled equivalence ratio method for the determination of hazardous components of fire effluents Steady- state tube furnace Méthode du rapport d'équivalence controlee pour la détermination des substances dangereuses des effluents du feu - Four tubulaire a conditionsstables Reference number ISO/TS 19700:2016(E) OSI International Organization for Standardization @IS02016 ted without license from IHS IS0/TS 19700:2016(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 copyright office 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 No reproduction or networking permited withoutlicense from IHS IS0/TS 19700:2016(E) Contents Page Foreword ..V Introduction. ..vi 1 Scope. 2 Normative references 3 Terms and definitions 4 Principle ...3 5 Apparatus. ..4 5.1 General apparatus. .4 5.2 Tubular furnace. 5.3 Calibrated thermocouples ..6 5.4 Quartz furnace tube. 5.5 Combustion boat. .6 5.6 Combustion boat drive. .1 5.6.1 Mechanism. 7 5.6.2 Rate of specimen introduction. 5.7 Mixing and measurement chamber ..8 5.8 Analysis of gases .8 5.9 Determination of smoke aerosols .10 5.10 Exhaust system .10 6 Air supplies .10 6.1 Primary and secondary air supplies .10 6.2 Primary airflow calibration.. ..10 6.3 Secondary airflow calibration. ..1 6.4 Overall confirmation. ..11 7 Establishment of furnace temperature and setting of furnace temperature ..11 7.1 General 7.2 Establishing furnace temperature profile to determine furnace suitability ..12 7.3 Setting the temperature for an individual test run condition .12 8 Test specimen preparation ..13 8.1 Test specimen form ..13 8.2 Combustible loading ..13 8.3 Specimen conditioning. ..13 9 Selection of test decomposition conditions. .13 9.1 Selection of decomposition conditions for fire hazard analysis or fire safety engineering13 9.2 Stage 1b): oxidative pyrolysis from externally applied radiation. ..14 9.3 Stage 2: well-ventilated flaming ..14 9.4 Stage 3a): small vitiated fires in closed or poorly ventilated compartments. ..15 9.5 Stage 3b): post-flashover fires in open compartments. ..16 10 Procedure .16 10.1 Safety considerations ..16 10.2 Decomposition of the test specimen .16 10.3 Steady-state period ..18 10.4 Sampling and analysis of fire effluent ..18 10.4.1 General ..18 10.4.2 Sampling of fire effluent .18 10.4.3 Determination of the mass of the specimen residue 20 10.4.4 Ambient conditions. ..20 10.5 Validity of test run. .21 11 Calculations. ..21 11.1 General, ..21 ntemaional ganzation@6All rights reserved iii without license from IHS