ISO 23555-3:2024

Gas pressure safety and control devices for use in gas transmission, distribution and installations for inlet pressures up to and including 10 MPa — Part 3: Safety shut-off devices

ISO 23555-3:2024

Name:ISO 23555-3:2024   Standard name:Gas pressure safety and control devices for use in gas transmission, distribution and installations for inlet pressures up to and including 10 MPa — Part 3: Safety shut-off devices
Standard number:ISO 23555-3:2024   language:English language
Release Date:13-Jun-2024   technical committee:ISO/TC 161 - Controls and protective devices for gas and/or oil
Drafting committee:ISO/TC 161 - Controls and protective devices for gas and/or oil   ICS number:23.060.40 - Pressure regulators
International
Standard
ISO 23555-3
First edition
Gas pressure safety and control
2024-06
devices for use in gas transmission,
distribution and installations for
inlet pressures up to and including
10 MPa —
Part 3:
Safety shut-off devices
Dispositifs de commande et de sécurité de la pression de gaz
destinés à être utilisés dans les installations de transport, de
distribution et de stockage de gaz pour des pressions en entrée
jusqu'à 10 MPa inclus —
Partie 3: Dispositifs d'arrêt de sécurité
Reference number
ISO 23555-3:2024(en) © ISO 2024

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ISO 23555-3:2024(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
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Published in Switzerland

© ISO 2024 – All rights reserved
ii

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ISO 23555-3:2024(en)
Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 2
3 Terms, definitions and symbols . 2
3.1 Terms and definitions .2
3.1.1 Terms related to safety shut-off devices in general .2
3.1.2 Terms related to components of safety shut-off devices .3
3.1.3 Terms related to variables in the controlling process .7
3.1.4 Terms related to the controlled process and to the set value of the trip pressure .8
3.1.5 Terms related to functional performances .8
3.1.6 Terms related to the design and tests .10
3.2 Symbols, abbreviated terms and units .10
4 Classification . 10
4.1 General .10
4.2 Temperature classes .11
4.3 Strength types .11
4.4 Fail conditions .11
5 Materials .
...

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