MHI delivers three replacement steam generators to EDF's Cruas 2
EDF placed the order in 2019; six further replacement steam generators are under manufacture at MHI's Kobe works for delivery from 2028.
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Key facts
- Each unit about 21 meters tall and 330 tonnes, with more than 4,500 TT690 heat transfer tubes
- Manufacturing completed at Kobe in January 2024; French regulatory standards certificate issued at end of February
- 15 replacement steam generators delivered to EDF since 2005, before the current delivery
- EDF operates 57 PWRs in France and is replacing steam generators at units that began operating in the 1980s
- More than 30 replacement steam generators delivered overseas, to France, Belgium and the USA
Mitsubishi Heavy Industries has delivered three replacement steam generators to EDF for installation at unit 2 of the Cruas nuclear power plant in southeastern France. Each vessel is about 21 meters tall and weighs some 330 tonnes, and contains more than 4,500 heat transfer tubes made of TT690, a nickel-chromium-iron alloy heat-treated for corrosion resistance. Steam generators transfer heat from a PWR's primary cooling system to the secondary system, producing the steam that drives the turbine.
EDF ordered the components from MHI in 2019 after an international bidding process. MHI received the order jointly with Onet Technologies, its alliance partner in the French nuclear market since 2002. Manufacturing was completed at MHI's Kobe facility in January 2024, and the units obtained a certificate complying with the standards required by the French nuclear regulatory authority at the end of February 2026 before being transported to France.
MHI holds orders for nine replacement steam generators from EDF in total. The remaining six are being manufactured at Kobe, with delivery scheduled from 2028. MHI said it has delivered a cumulative 15 replacement steam generators to EDF since 2005, excluding this delivery. EDF operates 57 PWR plants in France and, under government policy to extend operating life beyond 40 years, has been progressively replacing steam generators at plants that started operation in the 1980s.