Wylfa reactor type has suffered major problems in other countries.

Posted: 5th June 2018

It is worth reading this article in conjunction with the previous news item.  
It is notable that a similar design concept has just been abandoned in the USA due to lack of investment interest.

https://unearthed.greenpeace.org/2018/06/05/wylfa-hitachi-nuclear-reactor-type-awbr/