Published on 28/06/2016 at 12:00

EDF reactor steam generators in service could contain an anomaly

The analyses carried out by EDF since 2015 conclude that certain steam generator channel heads could contain a zone comprising a high carbon concentration which could lead to lower than expected mechanical properties. These steam generators equip 18 reactors of the 900 and 1450 MWe plant series.

Published on 24/06/2016 at 13:45

ASN rules on the reversibility of deep geological disposal of radioactive waste

In its opinion of 31st May 2016, the ASN Commission clarified its position on the technical implications of the notion of reversibility of the deep geological disposal of radioactive waste.

Published on 20/06/2016 at 18:00

Irregularities detected in Areva’s Creusot Forge plant

Since 18th May, when EDF transmitted its analyses of the irregularities brought to light in the Creusot Forge plant, ASN has been conducting its own technical review on the basis of the data transmitted and the additional evidence it requested. As a priority, ASN is dealing with the cases liable to have the most significant implications for reactor safety. In any case, prior to each reactor restart, it ensures that the irregularities detected do not compromise safety.

Published on 16/06/2016 at 14:30

Decommissioning of first-generation nuclear power plants

On 29th March 2016, the ASN commission called EDF to a hearing for the second time concerning its gas-cooled reactors (GCR) decommissioning strategy. These first generation reactors, which have been shut down for more than thirty years now, are located on the Saint-Laurent-des Eaux, Chinon and Bugey sites.

Published on 14/06/2016 at 11:00

EPR Reactor: Information Letter n°18

In the second half of 2015 and early 2016, ASN continued its oversight actions on the Flamanville 3 EPR reactor construction site and the various manufacturing operations for this reactor. The notable points observed over the last few months are detailed below.

Published on 27/05/2016 at 09:20

ASN Report 2015

On 25th May, ASN presented its report on the state of nuclear safety and radiation protection in France in 2015 to Parliament.

Published on 04/05/2016 at 11:00

Irregularities concerning components manufactured in its Creusot Forge plant

Following the detection of an anomaly on the Flamanville EPR reactor vessel, and at the instigation of ASN, AREVA initiated in April 2015 a quality review on the manufacturing work carried out in its Creusot Forge plant. Its conclusions were sent to ASN in October 2015.

Published on 23/04/2016 at 13:11

Generic guidelines for the periodic safety review

In a letter dated 20 April 2016, ASN stated its position regarding the EDF guidelines file concerning the 4th periodic safety review of the 900 MWe nuclear reactors.

Published on 22/04/2016 at 15:00

Jean-Christophe Niel is appointed Director-General of IRSN

On 20th April 2016, by decree of the President of the French Republic, Jean-Christophe Niel was appointed Director-General of IRSN, the French Institute for Radiation Protection and Nuclear Safety. Jean-Christophe Niel had been the Director-General of ASN since January 2007.

Published on 21/04/2016 at 16:00

ASN position statement concerning generic guidelines for the periodic safety review

In a letter to EDF dated 20th April 2016, ASN stated its position regarding the EDF guidelines concerning the 4th periodic safety review of the 900 MWe nuclear reactors.

Published on 20/04/2016 at 15:00

Falsification of materials analysis reports: ASN is collaborating with the ongoing judicial inquiry

On 21st January 2016, a metallurgical analysis laboratory informed ASN that it had found out that the inspection reports it had produced for a French mechanical company situated in the Loire département (42), had been falsified.

Published on 04/04/2016 at 13:30

Fall of a steam generator in the Paluel reactor 2 building

On 31st March 2016, EDF informed ASN of a fall by a steam generator during handling in the Paluel reactor 2 building.

Published on 18/03/2016 at 12:00

Maintenance of emergency electricity generators: ASN clarification

Following publication of EDF internal documents concerning maintenance of the emergency electricity generators for its nuclear reactors, ASN makes the following clarifications.

Published on 11/03/2016 at 16:45

Incident of 9 April 2014 on reactor 1 of the Fessenheim NPP

On 9th April 2014, ASN was informed by EDF that internal flooding in the non-nuclear part of reactor 1 in the Fessenheim nuclear power plant had damaged the safety electrical systems, leading to shutdown of reactor 1.

Published on 01/03/2016 at 15:00

Corrosion of fission products concentrating evaporators at La Hague

On Thursday 11 February 2016, the ASN Commission called Philippe Knoche, Managing Director, to a hearing concerning the corrosion of the evaporators used to concentrate fission products on the La Hague site in presence of Philippe Varin, Chairman of the Areva group. This equipment, which was designed for an operational life of thirty years, entered into service between 1989 and 1994.

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