That's probably not an option because of how geologically active Japan is - dump a whole lot of water down a deep hole and you might be getting it back as steam. As for "other radioactive waste", America was supposed to have Yucca Mountain for that, but Obama fucked that up.
Bro, it almost doesn't matter where you are on the planet. If you bore a 17 km (10 mile) deep hole and dump water down it, you will be getting that water back as steam. 17 km down is permahot. There are some anomalous zones where the geothermal temperature gradient is wonky, but generally, at 20km depth it ought to be well past 100C.
That's probably not an option because of how geologically active Japan is - dump a whole lot of water down a deep hole and you might be getting it back as steam. As for "other radioactive waste", America was supposed to have Yucca Mountain for that, but Obama fucked that up.
Bro, it almost doesn't matter where you are on the planet. If you bore a 17 km (10 mile) deep hole and dump water down it, you will be getting that water back as steam. 17 km down is permahot. There are some anomalous zones where the geothermal temperature gradient is wonky, but generally, at 20km depth it ought to be well past 100C.
On site dry cask storage is fine.