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ASN’s supervision of the Flamanville-3 reactor construction (EPR) : News

Read the newsletters about the supervision of the Flamanville-3 reactor construction (EPR) ...

Information Letter No.19: ASN actions for monitoring the Flamanville EPR reactor construction site: notable points.

Published on 09/06/2017 • 07:30 pm

Information notice

Information Letter No.19

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.

Information Letter No.18: ASN oversight of the Flamanville EPR reactor construction site: notable points

Published on 14/06/2016 • 11:00 am

Information notice

Information Letter No.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.

Pose de la cuve du réacteur EPR de Flamanville 3

Published on 23/06/2015 • 05:30 pm

Information notice

EPR Information Letter No.17

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

Newsletter n°16 - ASN monitoring of the Flamanville EPR reactor construction site: significant points.

Published on 17/11/2014 • 03:20 pm

Information notice

EPR Newsletter n°16

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.

Schema of the polar crane and lifting and handling equipment. In red additional trolleys

Published on 20/12/2013 • 04:17 pm

Information notice

EPR reactor : conformity of its heavy lifting gear in EDF nuclear power plants

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

Installation of Flamanville 3 reactor dome

Published on 25/11/2013 • 11:00 am

Information notice

Supervision of the EPR reactor: Information notice No. 15

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

Supervision of the EPR reactor: Information notice No. 14

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.

Supervision of the EPR reactor: Information notice No. 13

Published on 08/10/2012 • 05:26 pm

Information notice

Supervision of the EPR reactor: Information notice No. 13

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.

Shéma du contrôle-commande EPR

Published on 16/04/2012 • 09:30 am

Information notice

I&C architecture of the Flamanville 3 EPR

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.

Information notice No. 12 - ASN’s supervision of the Flamanville-3 reactor construction (EPR)

Published on 21/03/2012 • 02:00 pm

Information notice

Supervision of the EPR reactor: information notice No. 12

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

Supervision of the EPR reactor: Information notice No. 11

Published on 12/09/2011 • 05:21 pm

Information notice

Supervision of the EPR reactor: Information notice No. 11

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.

Diagram of vessel head nozzles and welds

Published on 26/04/2011 • 10:49 am

Information notice

Reactor vessel head for the Flamanville EPR

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.

Published on 19/04/2011 • 10:41 am

Information notice

Health and safety inspection at EPR reactor

ASN oversees occupational health and safety inspection at French nuclear power plants [1]. It provides coordinated oversight of the health, safety, working conditions and quality of employment of EDF employees, as well as those of EDF service providers and subcontractors, just as it does for nuclear safety at facilities. This activity covers the construction, operation and decommissioning of nuclear power plants [2].

Supervision of the EPR reactor: Information notice No. 10

Published on 10/02/2011 • 05:21 pm

Information notice

Supervision of the EPR reactor: Information notice No. 10

During the second half of 2010, ASN continued its inspection activities at the Flamanville 3 EPR construction site.

EPR reactor

Published on 27/08/2010 • 05:58 pm

Information notice

Supervision ot the EPR reactor : information notice No 9

During the second quarter of 2010, ASN continued its inspection activities at the Flamanville 3 EPR construction site.