Oversight of the fourth periodic safety reviews of EDF’s 900 MWe reactors The fourth periodic safety review of the 900 Megawatts electric (MWe) reactors results in significant safety improvements, the deployment of which is mobilising the entire nuclear sector. ASN considers that so far, the fourth ten-yearly outages have been conducted relatively satisfactorily. In France, the authorisation to create a nuclear facility is issued by the Government, after consulting ASN. This authorisation is issued without time limit. An in-depth examination, called the “periodic safety review”, is performed every 10 years to evaluate the conditions for the continued operation of the installation for the next 10 years. EDF’s 900MWe reactors are the oldest reactors in operation in France. Their fourth periodic safety review is of particular significance, because their design postulated an operating lifetime of 40 years. Their continued operation beyond this period requires the updating of design studies and equipment replacements. Aerial view of the Bugey Nuclear Power Plant NUCLEAR POWER PLANTS BEYOND 40 YEARS 26 ASN Report on the state of nuclear safety and radiation protection in France in 2021 NOTABLE EVENTS 2021
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