Of course a 1960's design isn't adapted to current weather conditions. That doesn't mean the whole technology is useless, like so many commenters imply.
Any new build can and will include cooling adapted to hotter conditions.
The one that shut down in Romania is a CANDU, built in the 80s.
It's not matter of "can", it's a matter of "how much does it cost?" and "who pays for that?".
There's a nuclear reaction in the sky beaming free energy to us, let's just use that