[leonidasrup]

The containment building of new nuclear power plant has to withstand impact of large, commercial aircraft used for long distance flights, with aviation fuel loading typically used in such flights.

§ 50.150 Aircraft impact assessment.

https://www.nrc.gov/reading-rm/doc-collections/cfr/part050/p...

Containment buildings for nuclear reactors are the strongest non-military buildings ever build. You need something much stronger than a small airplane, or simple drone, missile to breach it. Even a 155mm artillery granite or a anti-tank missile is not enough. You would probably need specialize bunker buster munition, or nuclear explosion.

https://en.wikipedia.org/wiki/Containment_building

The Russian army will not directly attack nuclear power plants in Ukraine. They could not gain much from release of radioactive material as the radioactive material would also migrate to Russia. The Russian army is attacking the infrastructure connecting power plants to the grid, to deny the electricity production. (And is attacking must power infrastructure in Ukraine).

https://www.reuters.com/world/europe/russia-hits-several-key...

[contubernio]

These safety mechanisms have not been tested.

Error rather than intentional targetting has to be considered.

Imagine a cruise missile (e.g. tomahawk) or a bunker buster bomb rather than an anti-tank missile.

The premise that such plants will not be targetted may apply to Russia (I doubt it) but may not apply to Israel or the USA.