ISO 21013-1:2021

Cryogenic vessels — Pressure-relief accessories for cryogenic service — Part 1: Reclosable pressure-relief valves

This document specifies the requirements for the design, manufacture and testing of pressure relief valves for cryogenic service, i.e. for operation with cryogenic fluids below −10 °C in addition to operation at ambient temperatures from ambient to cryogenic. This document is applicable to valves not exceeding a size of DN 150 designed to relieve single-phase vapours or gases. A valve can be specified, constructed and tested such that it is suitable for use with more than one gas or with mixtures of gases. NOTE This document does not provide methods for determining the capacity of relief valve(s) for a particular cryogenic vessel. Such methods are provided in ISO 21013-3.

Récipients cryogéniques — Dispositifs de sécurité pour le service cryogénique — Partie 1: Soupapes de sûreté pour service cryogénique

General Information

• Status: Published
• Publication Date: 19-Dec-2021
• ICS: 23.020.40 - Cryogenic vessels
• Technical Committee: ISO/TC 220 - Cryogenic vessels
• Drafting Committee: ISO/TC 220/WG 3 - Supporting standards
• Current Stage: 6060 - International Standard published
• Start Date: 20-Dec-2021
• Due Date: 28-Jun-2021
• Completion Date: 20-Dec-2021

Relations

• Revises: ISO 21013-1:2008 - Cryogenic vessels — Pressure-relief accessories for cryogenic service — Part 1: Reclosable pressure-relief valves
• Effective Date: 07-Jul-2018

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 21013-1
Second edition
2021-12
Cryogenic vessels — Pressure-relief
accessories for cryogenic service —
Part 1:
Reclosable pressure-relief valves
Récipients cryogéniques — Dispositifs de sécurité pour le service
cryogénique —
Partie 1: Soupapes de sûreté pour service cryogénique
Reference number
ISO 21013-1:2021(E)
© ISO 2021

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ISO 21013-1:2021(E)
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ii
  © ISO 2021 – All rights reserved

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ISO 21013-1:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Requirements . 3
4.1 General . 3
4.2 Design . 3
4.2.1 Design temperature . 3
4.2.2 Drainage . 3
4.2.3 Stem guiding. 3
4.2.4 Inserts . 3
4.2.5 Sublimating fluids service . 3
4.2.6 Electric continuity . 3
4.2.7 Set pressure . 4
4.2.8 Minimum shell thickness . 4
4.3 Materials . 4
4.3.1 General . 4
4.3.2 Metallic materials . 4
4.3.3 Non-metallic materials .
...