nuclear-news

Flamanville EPR shut down, no restart date announced

Having just exceeded the 60% power threshold, the Flamanville EPR was shut down as part of its tests but must remain so following a problem.

By Chrismaël Marchand, June 25, 2025, https://actu.fr/normandie/flamanville_50184/lepr-de-flamanville-est-a-larret-pas-de-date-de-redemarrage-annoncee_62823385.html

The Flamanville EPR (Manche) entered the operating phase in May 2024, with the loading of its fuel . Since then, it has validated its first divergence in September 2024 and the coupling to the electricity grid in December 2024. In 2025, it continues this intense start-up phase with a target of full power during the summer of 2025 .

It is even on schedule, it seems, since it reached 60% of its power , at the beginning of June 2025. It is now aiming for the 80% level where it will have to benefit from the approval of the Nuclear Safety and Radiation Protection Authority (ASNR).

However, he will have to wait a little longer because unit number 3 of the Flamanville Nuclear Power Production Centre (CNPE) is no longer operating.

Investigation and repair on the agenda

On June 19, 2025, at 7:05 p.m., it was shut down as part of the reactor commissioning tests, which require the reactor to undergo numerous and significant power variations.

Reactor No. 2 is also delayed

On Monday, June 16, reactor No. 2 was disconnected from the power grid, “following the activation of the turbine’s automatic protections,” located in the non-nuclear part of the facility. “We detected an oil leak on a component,” EDF confirmed. “The reactor therefore went into automatic protection mode.” Initially, unit No. 2 was scheduled to restart on the evening of Sunday, June 22. However, repairs are taking longer than expected. A new date has therefore been set for Saturday, June 28. However, there is no guarantee.

“This shutdown allowed adjustment operations to be carried out in the engine room, a non-nuclear part of the facilities,” EDF explained . However, the production unit has still not restarted.

It is kept at a standstill to carry out investigations and adjustments on a protection valve of the main primary circuit.EDF, communications department

No official date has been announced yet. ” We are investigating and making repairs to continue the test session,” EDF concluded

July 1, 2025 - Posted by Christina Macpherson | technology