[Dawn Falcon]

Actually, for most of the things you need nuclear power, if you can lug the weight (it's not as efficient) and are worried about explosions, use a pebble bed reactor.

They CAN'T blow up. Sure, a direct hit will spray radioactive pebbles everywhere, but that's not nearly as bad as a meltdown.

Which CAN happen with a fission reactors. Fusion reactors like BT CAN explode..but ONLY if their shielding fails catastrophically. If there's time for the (hydrogen) feed to shut down, no boom.

But if there's a critical failure? boom.