User blog comment:Owlfeathers0117/Caelmare/@comment-12161342-20150214004826/@comment-27797576-20150217030517

AP, nukes, unless exploded, have like, 0 neutron emmisions. And by the time it explodes, it would already be too late(and probably already spotted).

Normal materials for a nuke:

Plutoium(0 fast neutron emmisions even when detonated)

Uranium(same thing as plutoium)

Hydrogen(0 fast neutron emmisions unless exploded.)

And all other riadation would likely be shielded(they are nukes after all, you don't want to kill the crew from rads)