ISO 20421-1:2019
Cryogenic vessels — Large transportable vacuum-insulated vessels — Part 1: Design, fabrication, inspection and testing

Standard No.

ISO 20421-1:2019

Release Date

2019

Published By

International Organization for Standardization (ISO)

Status

Be replaced

Replace By

ISO 20421-1:2019/Amd 1:2022

Latest

ISO 20421-1:2019/Amd 1:2022

Scope

This document specifies requirements for the design, fabrication, inspection and testing of large transportable vacuum-insulated cryogenic vessels of more than 450 l volume, which are permanently (fixed tanks) or not permanently (demountable tanks and portable tanks) attached to a means of transport, for one or more modes of transport. This document applies to large transportable vacuum-insulated cryogenic vessels for fluids specified in 3.1 and does not apply to vessels designed for toxic fluids. This document does not include the general vehicle requirements, e.g. running gear, brakes, lighting, etc. NOTE 1 This document does not cover specific requirements for refillable liquid-hydrogen tanks that are primarily dedicated as fuel tanks in vehicles. For fuel tanks used in land vehicles, see ISO 13985. NOTE 2 This document does not cover specific requirements for refillable liquid hydrogen and LNG tanks that are primarily dedicated as fuel tanks in vehicles. For fuel tanks used in vehicles, see ISO 13985.

ISO 20421-1:2019 Referenced Document

• EN 13445-3 Unfired pressure vessels - Part 3: Design
• ISO 10042 Welding - Arc-welded joints in aluminium and its alloys - Quality levels for imperfections
• ISO 10474:2013 Steel and steel products - Inspection documents
• ISO 10675-1 Non-destructive testing of welds — Acceptance levels for radiographic testing — Part 1: Steel, nickel, titanium and their alloys*， 2021-12-08 Update
• ISO 14732 Welding personnel.Qualification testing of welding operators and weld setters for mechanized and automatic welding of metallic materials
• ISO 15613 Specification and qualification of welding procedures for metallic materials - Qualification based on pre-production welding test
• ISO 15614-1 Specification and qualification of welding procedures for metallic materials — Welding procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys
• ISO 15614-2 Specification and qualification of welding procedures for metallic materials — Welding procedure test — Part 2: Arc welding of aluminium and its alloys TECHNICAL CORRIGENDUM 1
• ISO 17635 Non-destructive testing of welds - General rules for metallic materials
• ISO 17637 Non-destructive testing of welds - Visual testing of fusion-welded joints
• ISO 20421-2 Cryogenic vessels - Large transportable vacuum-insulated vessels - Part 2: Operational requirements
• ISO 21010 Cryogenic vessels - Gas/material compatibility
• ISO 21011 Cryogenic vessels - Valves for cryogenic service
• ISO 21013-3 Cryogenic vessels - Pressure-relief accessories for cryogenic service - Part 3: Sizing and capacity determination
• ISO 21028-1 Cryogenic vessels - Toughness requirements for materials at cryogenic temperature - Part 1: Temperatures below -80 degrees C
• ISO 21028-2 Cryogenic vessels - Toughness requirements for materials at cryogenic temperature - Part 2: Temperatures between -80 degrees C and -20 degrees C
• ISO 23208 Cryogenic vessels — Cleanliness for cryogenic service — Amendment 1: Cryogenic vessels — Cleanliness for cryogenic service — Amendment 1*， 2020-07-15 Update
• ISO 3834-2 Quality requirements for fusion welding of metallic materials - Part 2: Comprehensive quality requirements*， 2021-03-31 Update
• ISO 4126-2 Safety devices for protection against excessive pressure — Part 2: Bursting disc safety devices
• ISO 5817 Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) — Quality levels for imperfections*， 2023-02-24 Update
• ISO 9606-1 Qualification testing of welders — Fusion welding — Part 1: Steels TECHNICAL CORRIGENDUM 1
• ISO 9606-2 Qualification test of welders - Fusion welding - Part 2: Aluminium and aluminium alloys
• ISO 9712 Non-destructive testing — Qualification and certification of NDT personnel*， 2021-12-21 Update

ISO 20421-1:2019 history

• 2022 ISO 20421-1:2019/Amd 1:2022 Cryogenic vessels — Large transportable vacuum-insulated vessels — Part 1: Design, fabrication, inspection and testing — Amendment 1
• 2019 ISO 20421-1:2019 Cryogenic vessels — Large transportable vacuum-insulated vessels — Part 1: Design, fabrication, inspection and testing
• 2007 ISO 20421-1:2006/cor 1:2007 Cryogenic vessels - Large transportable vacuum-insulated vessels - Part 1: Design, fabrication, inspection and testing; Technical Corrigendum 1
• 2006 ISO 20421-1:2006 Cryogenic vessels - Large transportable vacuum-insulated vessels - Part 1: Design, fabrication, inspection and testing