TECHNICAL ISO/TR REPORT 14749 First edition 2016-05-15 Natural gas Online gas chromatograph for upstream area Gaz naturels - Chromatographe en phase gazeuse en ligne pour zoneamont Reference number IS0/TR 14749:2016(E) ISO International Organization for Standardization =ZHEJIANG INST OF STANDARDIZATION C1 5956617 @IS02016 ted without license from IHS IS0/TR 14749:2016(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. ISO copyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +4122 749 09 47 [email protected] www.iso.org prganizationfor Standardization ensee-ZHEJIANG INST OF STANDARDIzARoISQ16- All rights reserved Not for Resale, 2016/7/20 08:07:30 etworking permitted without license from IHS IS0/TR 14749:2016(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Principle of measurement 2.1 General .1 2.2 Gas composition 1 3 Sampling and conditioning 4 Online gas chromatograph selection guideline ..6 5 Calibration guidelines. ..7 5.1 Calibration procedure .7 5.1.1 General. 5.1.2 Calibration .7 5.1.3 Calibration frequency 7 5.2 Calibration gases 8 5.3 Chromatogram verification .8 5.3.1 Response Factor (RF) .8 5.3.2 Retention Time (RT) .8 6 Verification procedure .8 6.1 General. .8 6.2 Visual inspection of Sample system .9 6.3 Visual inspection of analyser .9 6.4 Carrier Gas... .9 6.5 Calibration Gas. 6.6 GC verification .9 7 Maintenance and Corrective maintenance .10 7.1 Preventive maintenance. .10 7.2 Corrective maintenance ..10 8 Alarm and diagnostic ..10 9 Repeatability and Reproducibility. .12 9.1 Repeatability ..12 9.2 Reproducibility ..12 10 Data handling during GC failure ..12 11 Quality Control of analysis data .13 Annex A (informative) Example, comparison between duty and backup GC ..14 Annex B (informative) Example, Typical chromatogram ..16 Annex C (informative) Example: Analysis result ..18 Bibliography .19 iii ee=ZHEJIANG INSTOFSTANDARDIZATION C15956617 withoutlicense from IHS