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

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

31 news

Published on 28/08/2023 at 14:31

EPR Reactor: Information Letter n°24

In 2022 and in the first half of 2023, ASN continued with its monitoring of the construction of the Flamanville EPR reactor. It was particularly vigilant with regard to the treatment of the deviations detected on the main primary and secondary system welds and to the correct operation of the filtration function of the safety injection system (SIS). It continued to examine the installation start-up tests and the correct operation of the primary system protection valves.

Published on 26/11/2021 at 10:29

EPR Reactor: Information Letter n°23

ASN continued its monitoring of the construction of the Flamanville EPR reactor. In 2020 and 2021, it was particularly vigilant regarding the processing of the anomalies detected on the main primary and secondary system welds and the continuation of the reactor start-up tests. ASN also authorised partial commissioning of the installation to allow nuclear fuel to enter the site, starting on 26 October 2020 and ending on 24 June 2021. A look back at these notable events.

Published on 27/07/2020 at 10:37

EPR Reactor: Information Letter n°22

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 at 11:30

EPR Reactor: Information Letter n°21

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 at 16:30

EPR Reactor: Information Letter n°20

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 at 19:30

EPR Reactor: Information Letter n°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.

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 23/06/2015 at 17:30

EPR Reactor: Information Letter n°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

Published on 17/11/2014 at 15:20

EPR Reactor: Information Letter 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.

Published on 25/11/2013 at 11:00

EPR Reactor: Information Letter n°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 at 13:44

EPR Reactor: Information Letter n°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.

Published on 08/10/2012 at 17:26

EPR Reactor: Information Letter n°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.

Published on 16/04/2012 at 09:30

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.

Published on 21/03/2012 at 14:00

EPR Reactor: Information Letter n°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