ISO 3977-9:2024

Gas turbines — Procurement — Part 9: Reliability, availability and maintainability

This document provides a basis for exchange of information about reliability, availability and maintainability between gas turbine manufacturers, users, consultants, regulatory bodies, insurance companies and others. It defines terms and definitions and also describes component life expectancy, repairs and criteria for determining overhaul intervals. This document is applicable to all elements of the gas turbine and auxiliaries.

Turbines à gaz — Spécifications pour l'acquisition — Partie 9: Fiabilité, disponibilité, maintenance

Le présent document fournit une base d'échange d'informations relatives à la fiabilité, la disponibilité, et la maintenance entre les fabricants de turbines à gaz, les utilisateurs, les consultants, les organismes de réglementation, les compagnies d'assurances et autres. Il définit les termes et définitions et il décrit également la durée de vie escomptée des composants, les réparations et les critères de détermination des intervalles de révision. Le présent document s'applique à tous les éléments de la turbine à gaz et aux équipements auxiliaires.

General Information

• Status: Published
• Publication Date: 21-May-2024
• ICS: 27.040 - Gas and steam turbines. Steam engines
• Technical Committee: ISO/TC 192 - Gas turbines
• Drafting Committee: ISO/TC 192 - Gas turbines
• Current Stage: 6060 - International Standard published
• Start Date: 22-May-2024
• Due Date: 23-Nov-2023
• Completion Date: 22-May-2024

Relations

• Revises: ISO 3977-9:1999 - Gas turbines — Procurement — Part 9: Reliability, availability, maintainability and safety
• Effective Date: 06-Jun-2022

Standards Content (Sample)

International
Standard
ISO 3977-9
Second edition
Gas turbines — Procurement —
2024-05
Part 9:
Reliability, availability and
maintainability
Turbines à gaz — Spécifications pour l'acquisition —
Partie 9: Fiabilité, disponibilité, maintenance
Reference number
ISO 3977-9:2024(en) © ISO 2024

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ISO 3977-9:2024(en)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland

© ISO 2024 – All rights reserved
ii

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ISO 3977-9:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Maintainability . 5
4.1 General .5
4.2 Manufacturer's responsibility .6
4.2.1 Inspection schedules .6
4.2.2 On-line inspection and on-line maintenance .7
4.2.3 Condition monitoring .8
4.2.4 Running maintenance .8
4.2.5 Fouling .8
4.2.6 Degradation .8
4.3 User's responsibility .8
4.4 Spares parts .9
4.5 Operating log sheets .9
5 Reliability and availability .
...

Norme
internationale
ISO 3977-9
Deuxième édition
Turbines à gaz — Spécifications
2024-05
pour l'acquisition —
Partie 9:
Fiabilité, disponibilité, maintenance
Gas turbines — Procurement —
Part 9: Reliability, availability and maintainability
Numéro de référence
ISO 3977-9:2024(fr) © ISO 2024

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ISO 3977-9:2024(fr)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2024
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: [phone]
E-mail: [e-mail]
Web: www.iso.org
Publié en Suisse

© ISO 2024 – Tous droits réservés
ii

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ISO 3977-9:2024(fr)
Sommaire Page
Avant-propos .iv
Introduction .v
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Maintenabilité . 5
4.1 Généralités .5
4.2 Responsabilités du fabricant.6
4.2.1 Programmes d'inspections .6
4.2.2 Inspection et maintenance en continu .8
4.2.3 Surveillance de l'état .8
4.2.4 Maintenance en fonctionnement .8
4.2.5 Encrassement .8
4.2.6 Dégradation .8
4.3 Responsabilités de l'utilisateur .8
4.4 Pièces de rechange .9
4.5 Diagrammes d'enregistrement de fonctionnement .9
5 Fiabilité et disponibilité .12
5.1 Essais de réception de fiabilité.
...

FINAL DRAFT
International
Standard
ISO/FDIS 3977-9
ISO/TC 192
Gas turbines — Procurement —
Secretariat: ANSI
Part 9:
Voting begins on:
2024-02-27
Reliability, availability and
maintainability
Voting terminates on:
2024-04-23
Turbines à gaz — Spécifications pour l'acquisition —
Partie 9: Fiabilité, disponibilité, maintenance
Member bodies are requested to consult relevant national interests in ISO/TC
67,ISO/TC 67/SC 6 before casting their ballot to the e-Balloting application.
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 3977-9:2024(en) © ISO 2024

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FINAL DRAFT
ISO/FDIS 3977-9:2024(en)
International
Standard
ISO/FDIS 3977-9
ISO/TC 192
Gas turbines — Procurement —
Secretariat: ANSI
Part 9:
Voting begins on:
Reliability, availability and
maintainability
Voting terminates on:
Turbines à gaz — Spécifications pour l'acquisition —
Partie 9: Fiabilité, disponibilité, maintenance
Member bodies are requested to consult relevant national interests in ISO/TC
67,ISO/TC 67/SC 6 before casting their ballot to the e-Balloting application.
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
COPYRIGHT PROTECTED DOCUMENT
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/FDIS 3977-9:2024(en) © ISO 2024

© ISO 2024 – All rights reserved
ii

---------------------- Page: 2 ----------------------
ISO/FDIS 3977-9:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Maintainability . 5
4.1 General .5
4.2 Manufacturer's responsibility .6
4.2.1 Inspection schedules .6
4.2.2 On-line inspection and on-line maintenance .
...

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Secretariat: ANSI
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Part 9:
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Reliability, availability and maintainability
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Partie 9: Fiabilité, disponibilité, maintenance
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© ISO 20232024
Formatted: HeaderCentered
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication Formatted: Right: 1.5 cm, Bottom: 1 cm, Gutter: 0 cm,
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, Header distance from edge: 1.27 cm, Footer distance
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO from edge: 0.5 cm
at the address below or ISO’s member body in the country of the requester.
Commented [eXtyles1]: The reference is to a withdrawn
standard which has been replaced
ISO copyright office

CP 401 • Ch. de Blandonnet 8 ISO 20344, Personal protective equipment — Test methods
for footwear
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
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EmailE-mail: [e-mail]
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Website: www.iso.orgwww.iso.org
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Published in Switzerland
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© ISO 2024 – All rights reserved

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ISO/FDIS 3977-9:2023(E2024(en) Formatted: Font: 11 pt
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Contents
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Foreword . iv
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Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Maintainability . 8
4.1 General . 8
4.2 Manufacturer's responsibility . 9
4.2.1 Inspection schedules . 9
4.2.2 On-line i
...