
Tbf, steam explosions, turbine and transformator fires aren’t exclusive to NPPs. Just nobody cares if these events happen in any other thermal power plant.
The incidents exclusive to NPPs are those where (potentially) radioactive substances are emitted into the environment.
Probably verification by the associated domain. At least this works on Mastodon and Friendica.
https://stefanbohacek.com/blog/verification-in-the-fediverse/