ISO 21013-1:2021 PDF

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

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ISO 21013-1:2021

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

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 11
Дата публикации:: 20 декабря 2021 г.
Издание:: ISO IS 21013 edition 2 version 1
ICS:: 23.020.40

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Описание (английский):

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.

Технические детали

Технический комитет: ISO/TC 220 - Cryogenic vessels
SKU: ISO 21013-1:2021

Abstract

Overview

ISO 21013-1:2021 - "Cryogenic vessels - Pressure‑relief accessories for cryogenic service - Part 1: Reclosable pressure‑relief valves" specifies requirements for the design, manufacture and testing of reclosable pressure‑relief valves used with cryogenic fluids (below −10 °C) and at ambient temperatures up to their rated minimum temperature through +65 °C. It applies to valves up to DN 150 intended to relieve single‑phase vapours or gases. Note: methods to determine relief valve capacity for a vessel are given separately in ISO 21013‑3.

Key topics and technical requirements

Scope and applicability: Valves for cryogenic service, multiple gases and gas mixtures, size limit DN 150.
Design requirements:
- Operation across the full cryogenic-to-ambient temperature range (rated minimum temperature to +65 °C).
- Drainage and stem guiding to prevent water accumulation and freezing‑related malfunctions.
- Special provisions for sublimating fluids (e.g., CO2) to avoid solid deposition inside the valve.
- Use of soft inserts designed to resist cold‑flow and maintain seat tightness.
- Electrical continuity requirement for oxidising/flammable services: maximum resistance 1 000 Ω with ≤28 V between ports to avoid static build‑up.
- Set pressure must not exceed the valve’s PS (maximum allowable pressure).
- Minimum shell thickness referenced to ISO 15761 or ASME B16.34 (or equivalent calculation methods).
Materials and compatibility: Metallic and non‑metallic material selection per recognized standards and gas/material compatibility (see ISO 21010); consider corrosion, galling, oxygen compatibility.
Qualification and testing:
- Type approval, ambient and cryogenic tests, alternate cryogenic tests and production testing.
- Tests include seat‑tightness and re‑seating pressure verification; determination of the certified discharge coefficient.
Manufacturing controls: Cleanliness, marking, sealing and production inspection requirements are specified.

Applications and users

This standard is essential for:

Valve manufacturers designing and certifying reclosable pressure‑relief valves for cryogenic service
Cryogenic vessel designers and integrators selecting safety accessories
Test laboratories performing ambient and cryogenic qualification tests
Plant engineers, safety officers and procurement professionals in LNG, industrial gas, medical gas, and cryogenic storage/transport sectors
Regulatory bodies and inspectors assessing compliance for pressure‑relief systems

Related standards

ISO 21013‑3 (relief capacity methods)
ISO 4126‑1 (safety valves)
ISO 21009‑1, ISO 20421‑1, ISO 21010 (cryogenic vessel design & compatibility)
ISO 15761, ASME B16.34 (valve body thickness/design references)
ISO 23208 (cleanliness for cryogenic service)

ISO 21013-1:2021 provides the practical framework to ensure safe, reliable, and compliant reclosable pressure‑relief valves for cryogenic applications.

Overview

Key topics and technical requirements

Scope and applicability: Valves for cryogenic service, multiple gases and gas mixtures, size limit DN 150.
Design requirements:
- Operation across the full cryogenic-to-ambient temperature range (rated minimum temperature to +65 °C).
- Drainage and stem guiding to prevent water accumulation and freezing‑related malfunctions.
- Special provisions for sublimating fluids (e.g., CO2) to avoid solid deposition inside the valve.
- Use of soft inserts designed to resist cold‑flow and maintain seat tightness.
- Electrical continuity requirement for oxidising/flammable services: maximum resistance 1 000 Ω with ≤28 V between ports to avoid static build‑up.
- Set pressure must not exceed the valve’s PS (maximum allowable pressure).
- Minimum shell thickness referenced to ISO 15761 or ASME B16.34 (or equivalent calculation methods).
Materials and compatibility: Metallic and non‑metallic material selection per recognized standards and gas/material compatibility (see ISO 21010); consider corrosion, galling, oxygen compatibility.
Qualification and testing:
- Type approval, ambient and cryogenic tests, alternate cryogenic tests and production testing.
- Tests include seat‑tightness and re‑seating pressure verification; determination of the certified discharge coefficient.
Manufacturing controls: Cleanliness, marking, sealing and production inspection requirements are specified.

Applications and users

This standard is essential for:

Valve manufacturers designing and certifying reclosable pressure‑relief valves for cryogenic service
Cryogenic vessel designers and integrators selecting safety accessories
Test laboratories performing ambient and cryogenic qualification tests
Plant engineers, safety officers and procurement professionals in LNG, industrial gas, medical gas, and cryogenic storage/transport sectors
Regulatory bodies and inspectors assessing compliance for pressure‑relief systems

Related standards

ISO 21013‑3 (relief capacity methods)
ISO 4126‑1 (safety valves)
ISO 21009‑1, ISO 20421‑1, ISO 21010 (cryogenic vessel design & compatibility)
ISO 15761, ASME B16.34 (valve body thickness/design references)
ISO 23208 (cleanliness for cryogenic service)

ISO 21013-1:2021 provides the practical framework to ensure safe, reliable, and compliant reclosable pressure‑relief valves for cryogenic applications.

ISO 21013-1:2021 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Похожие стандарты

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Похожие стандарты

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