Hopefully the research tree requires
combinators to be completed before
the nuclear plant ... "My plant keeps melting down, how do i control it?" The thing that the plant requires to be researched to be built!
Concrete and steel should also be omnipresent for all the nuclear buildings.
The naming convention of resources forces "Stone" to be the only choice, unless a new resource is going to be put in entirely for nuclear. Honestly, it's fine by me if stone becomes the generic ore from which any fancy intermediate "ores" like uranium are found in. The real problem i see is how deep you want to go with the resource processing steps to nuclear power. It might be interesting and fun if the ore had to journey through the power plant itself in the process at least once in order to be finished, before returning to the same or another power plant to actually work for generating power. The end result might be:
Stone -> (1) Factory for uranium ore -> Smelter for uranium metal -> Power plant for enriching uranium -> Factory for enriched uranium rods -> (2) Factory for nuclear fuel assembly -> Insert to a nuclear power plant -> Spent fuel assembly removed for disposal in a factory using several landfill items, or for a recovery process that uses a fraction of normal or enriched uranium to repower the spent rods.
(1) Using Sulphuric Acid, representing a chemical extraction process?
(2) Steel, E. Uranium rods, Solid Fuel (Pure carbon)
As for the explosion, how large are we talking? People might get the wrong idea about what the nuclear power plant is for, if you make too large
an explosion from it's "failure" state.
It might also be nice to see the poison capsule effect be employed to represent radiation clouds
... As well as potentially starting fires.