ISO INTERNATIONAL STANDARD 3977-4 First edition 2002-06-01 Gas turbinesProcurement- Part 4: Fuelsandenvironment Turbinesagaz-Spécificationspour Iacquisition- Partie 4:Carburants et environnement Reference number ISO 3977-4:2002(E) ISO @ISO 2002 ISO3977-4:2002(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this area. Adobe is atrademarkof Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by isO member bodies. In the unlikely event ISO 2002 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 4122749 09 47 E-mail copyright@iso.ch Web www.iso.ch Printed in Switzerland @IsO2002-Allrightsreserved ISO 3977-4:2002(E) Contents Page Foreword. V Introduction Scope. 2 Normative references.. 3 Termsanddefinitions 4 Symbols (and abbreviated terms)... 3 5 Purchasers' and packagers' requirements for fuels .... 5.1 General...... 5.2 Purchaser's obligations 5.3 Packager's obligations.. 5.4 Gaseous fuels 5.5 Liquid fuels. 6 Environmental requirements 10 6.1 10 6.2 Noise emissions. 10 6.3 Exhaust emissions .. Annex A (informative) Calculation of Wobbe index.. Bibliography 17 Iso2002-All rightsreserved ii