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Flamanville fiasco: EDF blamed by the Nuclear Safety Authority

The French Nuclear Safety and Radiation Protection Authority (ASNR) has severely
criticised the crisis management at the EPR in Flamanville (Manche), which
has been shut down since 19 June due to a valve problem.

On 20 August, the inspectors subjected EDF teams to an unannounced exercise of “deployment of a local crisis means” (MLC), i.e. the replacement of one element of the
electrical panel with another to resupply batteries in the event of a total
loss of power supplies. As a result, the operator was unable to carry out
this operation, which was essential to avoid an accident.

In its follow-up
letter, the ASNR points to a “range of interventions that are not precise
enough”, agents “forced to question themselves on numerous occasions” and a
training follow-up deemed “perfectible”. Even more serious, some crisis
equipment requested by the inspectors could not be presented. “The
organisation of the Flamanville EPR in terms of crisis management and means
appears insufficient”, concludes the nuclear watchdog, an extremely rare
assessment in its usually measured vocabulary.

” I don’t remember such an
observation,” Guy Vastel, of the Association for the Control of
Radioactivity in the West (Acro), told Ouest-France. Yannick Rousselet,
from Greenpeace, believes that “nothing is right” in this report. EDF, for
its part, announced an “action plan” and assured that the findings “do not
call into question the availability of crisis resources or the site’s
ability to manage an emergency”.

Reporterre 10th Sept 2025,
https://reporterre.net/Fiasco-de-Flamanville-EDF-blamee-par-l-Autorite-de-surete-nucleaire

September 29, 2025 - Posted by Christina Macpherson | France, safety