News releases

All the news about nuclear safety and radiation protection

462 news

Published on 28/08/2023 at 14:31

EPR Reactor: Information Letter n°24

In 2022 and in the first half of 2023, ASN continued with its monitoring of the construction of the Flamanville EPR reactor. It was particularly vigilant with regard to the treatment of the deviations detected on the main primary and secondary system welds and to the correct operation of the filtration function of the safety injection system (SIS). It continued to examine the installation start-up tests and the correct operation of the primary system protection valves.

Published on 12/06/2023 at 11:50

Jean-Luc Lachaume is elected Chair of HERCA

At their plenary meeting on 7-9 June 2023 held in Stockholm, HERCA’s members elected Jean-Luc Lachaume, ASN Commissioner, as Chair of the association.

Published on 31/05/2023 at 14:44

ASN authorises use of the Flamanville EPR reactor vessel closure head

The commissioning and operation of the Flamanville EPR reactor pressure vessel were authorised by an ASN resolution in 2018. This resolution took into account a manufacturing anomaly in the lower dome and the vessel closure head and limited the use of the vessel closure head to 31 December 2024.

Published on 25/05/2023 at 15:35

ASN Report on the State of Nuclear Safety and Radiation Protection in France in 2022

On May 25, ASN presented its Report on the State of Nuclear Safety and Radiation Protection in France in 2022 to the parliamentarians of the Parliamentary Office for the Evaluation of Scientific and Technical Choices (OPECST). ASN used this opportunity to ask that the reflections conducted in preparation for the next multi-year energy Plan should adopt a systemic approach to the nuclear sector.

Published on 30/03/2023 at 19:55

External contamination of a worker

On 3 February 2023, ASN was notified by the Cattenom nuclear power plant licensee of a significant radiation protection event concerning the exceeding of an annual individual dose limit by an employee of an EDF contractor.

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 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.