Published on 27/07/2020 • 10:37 am

Information notice

ASN continued its monitoring of construction of the Flamanville EPR reactor. ASN was particularly vigilant regarding the processing of the anomalies detected on the main secondary system welds and the continuation of the reactor start-up tests. Review of the notable events.

Published on 21/05/2019 • 11:30 am

Information notice

ASN continued its monitoring of the Flamanville 3 EPR reactor construction site and the various manufactured items intended for it. The significant points in 2018 and early 2019 are detailed below; ASN was particularly vigilant with regard to the processing of the deviations detected on the main secondary system welds and the continuation of the reactor start-up tests.

Published on 03/05/2018 • 04:30 pm

Information notice

ASN continued its monitoring of the Flamanville 3 EPR reactor construction site and the various manufactured items intended for it. The significant points for 2017 and early 2018 are detailed below; ASN was particularly vigilant with regard to start-up testing activities, which were ramped up during the course of the past year.

Published on 09/06/2017 • 07:30 pm

Information notice

In the second half of 2016, ASN continued its monitoring of the Flamanville 3 EPR reactor and its various manufacturing operations. The notable points observed over these last few months are detailed below.

Published on 14/06/2016 • 11:00 am

Information notice

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 23/06/2015 • 05:30 pm

Information notice

In the second half of 2014 and early 2015, ASN continued its monitoring of the Flamanville 3 EPR reactor and the various manufacturing operations for this reactor. The notable points observed over these last few months are detailed below

Published on 17/11/2014 • 03:20 pm

Information notice

In the second half of 2013 and early 2014, ASN carried out a number of inspections to continue its monitoring of the Flamanville 3 EPR reactor construction site and the various items being manufactured for it. The significant points over these recent months are detailed below.

Published on 20/12/2013 • 04:17 pm

Information notice

On 13th December 2013, further to the ASN inspectors’ findings concerning lifting and handling equipment for large components in NPPs, ASN asked EDF to ensure the conformity of this equipment prior to any use

Published on 25/11/2013 • 11:00 am

Information notice

In the first half of 2013, ASN continued its monitoring of construction of the Flamanville 3 EPR reactor and various other manufacturing operations for this reactor; ASN carried out several inspections. The notable points observed over these last few months are detailed below.

Published on 08/03/2013 • 01:44 pm

Information notice

In the second half of 2012, ASN conducted several inspections for continued monitoring of the construction of the Flamanville 3 EPR reactor and various other manufacturing operations for this reactor. The notable points observed over these last few months are detailed below.

Published on 08/10/2012 • 05:26 pm

Information notice

Since the end of 2011, ASN has conducted several inspections [link to inspection follow-up letters posted on line on asn.fr] that continue its monitoring of the construction of the Flamanville 3 EPR reactor and various other manufacturing operations for this reactor. The notable points observed over these last few months are detailed below.

Published on 16/04/2012 • 09:30 am

Information notice

ASN considers that the changes EDF has made to the instrumentation and control (I&C) architecture of the Flamanville 3 EPR are satisfactory and enable it to lift the reservations it expressed in October 2009. This position is based on the analysis by its technical support organisation, IRSN, and the opinion of the Advisory Committee for nuclear reactors.

Published on 21/03/2012 • 02:00 pm

Information notice

ASN oversight of the Flamanville 3 EPR construction site continued during the second half of 2011. Details of recent findings are provided below: - Inspection of prestressing tendon duct installation work - Manufacture of polar crane support brackets - Oversight of complex concreting operations - Quality control of tank, pool and liner welding operations - ASN report on the complementary safety assessments conducted by EDF after the Fukushima accident - Repair of reactor vessel head - Non-conformances detected during the pipe manufacturing process

Published on 12/09/2011 • 05:21 pm

Information notice

Since 2008, several inspections by ASN have examined the prestressing system[1] of the Reactor Building containment. During construction of the first concreting lifts of the inner containment wall, EDF notified ASN of noncompliance issues relating to the prestressing system (see Information Notice No. 8). In May 2011, new noncompliance issues regarding positioning of portions of the prestressing sheaths were identified. In addition to occasional deviations, ASN found that recurring anomalies in the system indicated a lack of preparation, skills and training in safety culture on the part of workers and shortcomings in EDF’s monitoring of its subcontractors. As a result, ASN requested EDF to suspend concreting of the inner containment wall on 23 June 2011 and to present an action plan to avoid any further deviations in constructing the prestressing sheaths.

Published on 26/04/2011 • 10:49 am

Information notice

In November 2010, AREVA NP detected defects in several nozzle penetration* welds during its regulatory manufacturing inspections of the Flamanville 3 EPR reactor vessel head.