EDF announces a radioactive vapour leak in Flamanville and postpones the start of nuclear reactor 1

French electricity operator Edf has reported a leak of radioactive water vapor in the number one reactor of the Flamanville plant, which has led to the postponement by a month of its restart, initially scheduled for April 5. The Authority for Nuclear Safety and Radiation Protection (ANSR) has classified the incident as a level 1 “anomaly” on the INES scale, which ranges from 0 to 8. The leak, detected on March 22, comes from a small-diameter pip…

The leak was detected on 22 March at a flow rate above the current threshold. EDF indicates that it is without impact on the environment or the safety of the EDF nuclear power plant reported on Tuesday a "

A leak of radioactive vapour of the order of 1,000 litres per hour was detected on one of the reactors at the Flamanville nuclear power plant. "There has been no impact on the environment," and "on safety," says EDF.

Nuclear: the restart of a reactor carried over for a month due to a radioactive water leak Admin FCE 28 Mar 2025 - 22:15 EDF reported on Tuesday a "significant safety event" on its No.1 reactor in Flamanville, which is not the EPR, due to a leak of radioactive water vapour detected last weekend in the reactor building, which will require a month's delay in restarting, was learned Friday from the safety authority and EDF.This incident, considered…