Follow
So with 3rd gen reactors like EPR - that are currently built in UK, France, China, Finland etc - which have been built specifically with safety in mind, you can expect 1 on 10-100'000 reactor years failures.
And this is more than necessary, because we don't want fission-based nuclear energy forever - we need it perhaps for the next 30-50 years to kick-off renewables, fusion and other low-carbon energy sources.