# ISO 18077:2018 — Withdrawn and superseded ISO standards

For ISO 18077:2018, item title is Reload startup physics tests for pressurized water reactors; status code is 9599; successor is ISO 18077:2022; withdrawn / published date is 2018-03-27, recorded from its source on 2026-08-05.

- **Identifier:** ISO 18077:2018 _(verified: appears in the quote below)_
- **Item title:** Reload startup physics tests for pressurized water reactors _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 18077:2022
- **Withdrawn / published date:** 2018-03-27 _(verified: appears in the quote below)_

## What the source says

> 61295,IS,,ISO 18077:2018,Reload startup physics tests for pressurized water reactors,Essais physiques au redémarrage pour les réacteurs à eau préssurisée,2018-03-27,1,['27.120.10'],ISO/TC 85/SC 6,9599,,[76878],['en'],28,"<p>ISO 18077:2018 applies to the reactor physics tests that are performed following a refuelling or other core alteration of a PWR for which nuclear design calculations are required. This document does not address the physics test program for the initial core of a commercial PWR[1].</p><p>ISO 18077:2018 specifies the minimum acceptable startup reactor physics test program to determine if the operating characteristics of the core are consistent with the design predictions, wh

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).