# ISO 20421-1:2006 — Withdrawn and superseded ISO standards

For ISO 20421-1:2006, item title is Cryogenic vessels — Large transportable vacuum-insulated vessels — Part 1: Design, fabrication, inspection and testing; status code is 9599; successor is ISO 20421-1:2019; withdrawn / published date is 2006-04-19, recorded from its source on 2026-08-05.

- **Identifier:** ISO 20421-1:2006 _(verified: appears in the quote below)_
- **Item title:** Cryogenic vessels — Large transportable vacuum-insulated vessels — Part 1: Design, fabrication, inspection and testing _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 20421-1:2019
- **Withdrawn / published date:** 2006-04-19 _(verified: appears in the quote below)_

## What the source says

> 34176,IS,,ISO 20421-1:2006,"Cryogenic vessels — Large transportable vacuum-insulated vessels — Part 1: Design, fabrication, inspection and testing","Récipients cryogéniques — Récipients transportables isolés sous vide de grande contenance — Partie 1: Conception, fabrication, inspection et essais",2006-04-19,1,['23.020.40'],ISO/TC 220,9599,,[68589],['en'],122,"<p>ISO 20421-1:2006 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 tran

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).