Les cahiers de l'ASN #01 - Nuclear power plants: going beyond 40 years

The schedule of theperiodic safetyreviews T he 900 MWe reactors were commissioned between 1977 and 1987. EDF has drawn up a schedule which includes the transmission to ASN of the conclusions of the fourth periodic safety reviews of the reactors concerned. This schedule (opposite) was drawn up on the basis of the date of the previous periodic safety review. Reactor 1 of Tricastin NPP was the first to undergo its third periodic safety review and will therefore be the first to undergo its fourth periodic safety review. Periodic safety reviews between 2020 and 2031 • Tricastin 1 2020 2021 • Bugey 2 • Bugey 4 • Tricastin 2 2022 • Bugey 5 • Blayais 1 • Dampierre 1 • Gravelines 1 • Dampierre 2 2023 • Gravelines 3 • Tricastin 3 2024 • Bugey 3  • Blayais 2  • Dampierre 3  • Gravelines 2 • Chinon B1  • Gravelines 4 • St-Laurent B2 2025 • Tricastin 4  • Dampierre 4 • St-Laurent B1 • Cruas 3 2026 • Blayais 3 • Blayais 4 • Cruas 1 2027 • Gravelines 5 • Chinon B2 • Cruas 4 2030 • Chinon B3  • Gravelines 6 • Cruas 2 The fourth periodic safety reviews for the 900 MWe reactors are scheduled by EDF between 2020 and 2031. 2031 • Chinon B4 Pierre-Franck Chevet, ASN Chairman, 2014 After the Tricastin NPP in 2019, the fourth ten- yearly outage inspections will follow at the rate of five to seven reactors per year, starting in 2020, and 2020 is tomorrow! WHAT THE LAW SAYS The 10-year frequency for periodic safety reviews of nuclear facilities was introduced by the Act on transparency and security in the nuclear field (”TSN” Act) of 2006. All basic nuclear installations (BNI) on French territory are subject to this regulatory requirement. 6 • Les cahiers de l’ASN • September 2018