Feedback on the file investigation process
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In 2014 Areva declared an anomaly in the composition of steel in two components of the EPR reactor vessel: the lid and bottom of the vessel. Rémy Catteau, Director of the Nuclear Pressure Equipment Division, discusses this anomaly and the risks involved.
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11 October 2017
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.
28 June 2017
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.