Supervision of the EPR reactor

The EPR reactor is a pressurised water reactor (PWR) whose design, which has evolved with respect to that of the PWRs currently in operation in France, is intended to meet more stringent safety objectives.

Anomaly affecting the Flamanville EPR reactor vessel

Published on 11/10/2017 • 04:05 pm

Information notice

Flamanville EPR reactor: ASN issues its opinion

On 10th October 2017, ASN issued its opinion on the anomaly in the steel used for the Flamanville EPR reactor pressure vessel lower head and closure head. ASN considers that this anomaly is not such as to compromise the commissioning of the reactor pressure vessel, provided that specific checks are carried out during operation of the installation. As the feasibility of these checks cannot at present be confirmed for the closure head, ASN considers that the current closure head cannot be used beyond 2024.

Published on 28/06/2017 • 04:00 pm

Press release

ASN presents its position regarding the Flamanville EPR reactor vessel anomaly

On 28th June 2017, ASN presented its position regarding the Flamanville EPR reactor pressure vessel anomaly. ASN relied on the analysis of the files transmitted by Areva NP and EDF, carried out by its nuclear pressure equipment department and its technical support organisation IRSN, and on the opinion of its Advisory Committee for nuclear pressure equipment.

Published on 07/06/2017 • 06:20 pm

Information notice

Flamanville EPR reactor vessel anomaly: ASN specifies the examination calendar

On 26th and 27th June 2017 ASN will convene the Advisory Committee for nuclear pressure equipment (GP ESPN) to examine the anomaly affecting the composition of the steel used in the manufacture of the vessel closure head and bottom head of the Flamanville EPR reactor.

Published on 14/04/2017 • 09:30 am

Information notice

Resumption of manufacturing in AREVA NP’s Creusot Forge plant

Areva NP informed ASN of its intention to resume forging operations in its Creusot Forge plant, on nuclear pressure equipment components for French BNIs. In letters dated 12th April 2017 sent to Areva NP and EDF, ASN defined preconditions for resumption of the forging operations.

Published on 15/03/2017 • 10:00 am

Information notice

Anomaly in the carbon concentration of the steel

ASN has authorised restarting of the twelve reactors concerned by the anomaly in the carbon concentration of the steel of the channel heads of the steam generators manufactured by JCFC.

Published on 27/02/2017 • 12:00 pm

Information notice

Multinational inspection of AREVA NP in its Creusot Forge plant in Le Creusot (France)

With regard to the irregularities detected at Creusot Forge in early 2016, which affect forgings installed in the nuclear reactors of various countries, a multinational inspection of AREVA NP took place from 28th November to 2nd December 2016, in its Creusot Forge plant in Le Creusot (71), in accordance with the inspection protocol of the Multinational Design Evaluation Program (MDEP). This inspection, led by ASN, involved inspectors from the American, British, Canadian, Chinese and Finnish safety regulators, who used the Quality Assurance / Quality Management Criteria for Multinational Vendor Inspection baseline requirements detailed in MDEP technical report TR-VICWG-03 of 30th January 2014.

Published on 13/01/2017 • 03:04 pm

Information notice

After inspection, ASN authorised the restart of nine reactors

ASN approved the restart of nine of the twelve reactors concerned by the carbon concentration anomaly in the steam generator channel heads manufactured by JCFC, following its examination of the results of the inspections carried out and the technical demonstrations provided by EDF for the 900 MWe reactors.