Overview
ISO 21013-1:2021/Amd 1:2024 is an important amendment to the international standard governing cryogenic vessels, specifically addressing pressure-relief accessories used in cryogenic service. This amendment focuses on Part 1, which deals with reclosable pressure-relief valves - critical components designed to protect cryogenic storage and transport vessels from overpressure conditions. Published by the International Organization for Standardization (ISO), this update refines material requirements and introduces a new annex listing internationally recognized materials for valve construction, ensuring enhanced safety, reliability, and compatibility with cryogenic fluids.
Key Features
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Scope Update: While the original Part 1 of ISO 21013-1 covers reclosable pressure-relief valves used in cryogenic vessels, Amendment 1 updates material specifications and standard references for improved compliance.
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Material Standards: The amendment requires materials used in pressure-relief valves to conform either to internationally recognized standards or to specifications controlled by manufacturers to ensure equivalent chemical and physical quality. It emphasizes avoiding material incompatibilities such as galling, frictional heating, and galvanic corrosion.
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Annex A Inclusion: Amendment 1 introduces Annex A, a normative annex detailing European and non-European material standards accepted for cryogenic valve construction. This annex includes:
- Stainless steel grades compliant with EN, ISO/TR, ASME, and ASTM standards.
- Material groups ensuring suitability for low-temperature cryogenic environments.
- Casting materials in compliance with ASTM A 990 (Level 2 Shrinkage).
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Compatibility with Process Fluids: The standard highlights the necessity for materials to be compatible with various cryogenic fluids to prevent operational failures and maintain safety.
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Updated Bibliography: The amendment expands the bibliography to include multiple referenced international standards related to welding, steel tubing, stainless steel bars, pipe fittings, forgings, and piping for low-temperature and high-temperature service, providing comprehensive guidance on material selection and valve manufacturing.
Practical Applications
The ISO 21013-1:2021/Amd 1:2024 amendment is essential for industries utilizing cryogenic vessels with overpressure protection needs, including:
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Liquefied Natural Gas (LNG) Storage and Transport: Ensures valves maintain integrity under extreme low temperatures and prevent hazardous pressure build-up.
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Industrial Gas Supply: Used in oxygen, nitrogen, argon, and other industrial gas applications requiring safe pressure relief mechanisms.
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Chemical Processing: Supports the safe handling of cryogenic fluids in chemical plants, protecting vessels and personnel.
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Pharmaceutical and Food Industry: Applied where cryogenic preservation involves pressure vessels needing dependable relief safety devices.
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Research and Laboratory Settings: Compliance with this standard ensures the safety and longevity of cryogenic storage vessels used in experimental environments.
Related Standards
ISO 21013-1:2021/Amd 1:2024 complements and references several critical international standards and specifications:
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ISO/TR 15608:2017 – Welding guidelines and metallic materials grouping.
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EN 10216-5:2021, EN 10217-7:2021 – Seamless and welded stainless steel tubes for pressure purposes.
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ASME and ASTM Standards including:
- ASME SA-312 / ASTM A-312: Austenitic stainless steel pipes.
- ASME SA-213 / ASTM A-213: Boiler, superheater, and heat-exchanger tubes.
- ASME SA-182 / ASTM A-182: Forged fittings and valves for high-temperature service.
- ASTM A-990: Requirements for casting materials shrinkage.
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Other standards covering forgings, pipe flanges, tube fittings, and mechanical tubing ensure comprehensive adherence to recognized global material quality norms.
Summary
The ISO 21013-1:2021/Amd 1:2024 amendment is a crucial update for manufacturers, designers, and users of reclosable pressure-relief valves in cryogenic vessels. By refining material requirements and standardizing international references, this amendment enhances safety, durability, and compatibility of pressure-relief accessories in cryogenic service. Industry professionals tasked with compliance, procurement, and quality assurance will benefit from this latest version to ensure cryogenic system integrity under demanding operational conditions.
Keywords: ISO 21013-1 amendment, cryogenic vessels, pressure-relief valves, reclosable pressure-relief accessories, cryogenic safety valves, material standards cryogenic valves, ISO cryogenic standards, pressure relief valve materials, ASTM stainless steel valves, ASME valve specifications.
Open preview (PDF)Cryogenic vessels — Pressure-relief accessories for cryogenic service — Part 1: Reclosable pressure-relief valves — Amendment 1
