# ISO 23251:2006/Amd 1:2008 — Withdrawn and superseded ISO standards

For ISO 23251:2006/Amd 1:2008, item title is Petroleum, petrochemical and natural gas industries — Pressure-relieving and depressuring systems — Amendment 1; status code is 9599; successor is ISO 23251:2019; withdrawn / published date is 2008-05-15, recorded from its source on 2026-08-05.

- **Identifier:** ISO 23251:2006/Amd 1:2008 _(verified: appears in the quote below)_
- **Item title:** Petroleum, petrochemical and natural gas industries — Pressure-relieving and depressuring systems — Amendment 1 _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 23251:2019
- **Withdrawn / published date:** 2008-05-15 _(verified: appears in the quote below)_

## What the source says

> 50589,IS,Amd,ISO 23251:2006/Amd 1:2008,"Petroleum, petrochemical and natural gas industries — Pressure-relieving and depressuring systems — Amendment 1","Industries du pétrole, de la pétrochimie et du gaz naturel — Systèmes de dépressurisation et de protection contre les surpressions — Amendement 1",2008-05-15,1,['75.180.20'],ISO/TC 67/SC 6,9599,,[75144],"['en','fr']",7,

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).