ISO INTERNATIONAL STANDARD 3977-9 First edition 1999-12-15 Gas turbines Procurement - Part 9: Reliability, availability, maintainability and safety Turbines a gaz- Spécifications pour I'acquisition - Partie 9: Fiabilite, disponibilite, maintenabilite et sécurité Reference number ISO 3977-9:1999(E) ISO @ ISO 1999 ISO 3977-9:1999(E) PDF disclaimer 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. Adobeis atrademarkof AdobeSystems 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 ?ISO1999 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 + 41 22 734 10 79 E-mail [email protected] Web www.iso.ch Printed in Switzerland ii @ Iso 1999 - All rights reserved ISO 3977-9:1999(E) Contents Page Foreword. .iv 1 Scope .1 2 Normative reference 3 Termsanddefinitions.. 4 Maintainability.... 4.1 Manufacturer's responsibility.. 15 4.2 User's responsibility... 20 4.3 Spares holding... 4.4 Operating log sheets. .22 5 Reliability and availability .. .24 5.1 Reliability acceptance tests... 24 5.2 Reliability and availability, calculating and reporting....... .24 6 Safety . 25 6.1 General.... 25 6.2 Safety elements.. ..25 Iso1999-All rightsreserved ii