Published on 14/03/2023 at 11:05

Stress corrosion, Penly nuclear power plant

On 6 March 2023, EDF sent ASN an update of its significant safety event notification concerning the presence of stress corrosion cracks on several of its reactors. This update concerns reactor 3 of the Cattenom NPP and the reactors of the Civaux, Chooz B and Penly NPPs.

Published on 26/01/2023 at 16:48

Irregularities in equipment manufacturing at Japan Steel Works

In May 2022, Japan Steel Works (JSW) published reports of irregularities in its Muroran plant in Japan, which mainly concerned turbines for thermal power stations. The irregularities consisted more specifically in the modification of chemical analysis results, residual stress measurements and hardness measurements.

Published on 11/01/2023 at 18:07

ASN-NRC Meeting

The ASN and NRC Commissions met at NRC Headquarters in Rockville (MD, USA) on 9 January 2023 to discuss regulatory priorities and topics of interest...

Published on 12/12/2022 at 14:41

Exposure of a worker in excess of the statutory dose limit

On 31 October 2022, ASN was informed by Aperam Stainless France of a significant radiation protection event which had occurred on 28 October 2022 on its Gueugnon site , concerning the accidental exposure of a worker to ionising radiation.

Published on 05/12/2022 at 10:39

Olivier Gupta, ASN Director General, reappointed Chairman of WENRA

At their plenary meeting on 9 and 10 November 2022, WENRA’s members reappointed Olivier Gupta, ASN Director General, as Chairman of the association.

Published on 15/11/2022 at 17:00

WENRA statement on the importance of nuclear safety in the context of the current energy crisis

On 9 November, during its 2022 Fall Plenary Meeting in Liverpool, WENRA (Western European Nuclear Regulators' Association) discussed the context of the current energy crisis.

Published on 07/11/2022 at 11:19

Cattenom NPP reactor 1: Two welds need to be repaired before it can be restarted

During its treatment of the stress corrosion (SC) phenomenon affecting several of its reactors, and in accordance with the strategy it had proposed, EDF carried out inspections on the piping of the Cattenom NPP reactor 1 safety injection system. These inspections, which were carried out close to the welds liable to be the most severely affected, revealed indications that could be attributed to SC cracking. Two of them were of significant dimensions, with maximum depths of 4.7 and 6.1 mm.

Published on 17/10/2022 at 10:37

Management of the long-term consequences of a nuclear accident

In order to consolidate national strategy regarding the management of the long-term consequences of a nuclear accident, in 2005 the Prime Minister tasked a pluralistic committee, the Codirpa (Post-accident phase steering committee) with submitting proposals to the Government.

Published on 07/10/2022 at 15:51

Laue-Langevin Institute (ILL): periodic safety review report

ASN analysed the periodic safety review concluding report (RCR) for basic nuclear installation (BNI) 67, called the High-Flux Reactor (RHF), operated by Laue-Langevin Institute (ILL) on the Grenoble site (Isère départment).

Published on 07/10/2022 at 15:34

Aube Repository: periodic safety review report

ASN analysed the periodic safety review concluding report (RCR) for basic nuclear installation (BNI) 149 called the Aube Repository (CSA), operated by the French National Radioactive Waste Management Agency (Andra) on the Soulaines‑Dhuys site (Aube département)

Published on 07/10/2022 at 10:12

ENSREG’s statement #4 on the safety of nuclear installations in Ukraine

In the context of the war led by Russia in Ukraine, the European Nuclear Safety REgulators Group (ENSREG) of the European Union met again on Tuesday 4 October 2022. A new statement of ENSREG was prepared during the meeting.

Published on 18/08/2022 at 15:48

4th periodic safety review of the 900 MWe reactors: first report

On 30 June 2022, EDF sent ASN the first report on the implementation of the ASN resolution of 23 February 2021 on the generic phase of the 4th periodic safety review of the 900 MWe reactors.

Published on 11/08/2022 at 10:49

WENRA position on the safety situation of Zaporizhzhya NPP after reported shelling activities

Given the worrying situation, WENRA (Western European Nuclear Regulators Association) has led a technical group to assess once again the safety level of ZNPP based on information reported to date to IAEA.

Published on 29/07/2022 at 09:30

Stress corrosion phenomenon : ASN considers that EDF’s inspection strategy is appropriate

On 26 July 2022, ASN issued a position statement on the inspection strategy proposed by EDF with regard to the stress corrosion (SC) phenomenon affecting its reactors. ASN considers that EDF’s strategy is appropriate in the light of the knowledge acquired concerning the phenomenon and the corresponding safety issues.

Published on 06/07/2022 at 09:39

Development of small modular reactors

On 10 June 2022, the French (ASN), Finnish (STUK) and Czech (SUJB) regulators, along with their respective technical support organisations, began the preliminary examination of the main safety options of the NUWARD™ small modular reactor project sponsored by EDF.

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