Jurisdiction dependant it already is
But while in those areas the nuclear industries radioactive scrap gets tested, filed, and disposed of in a waste handling facility, radioactive scrap from other sources tends to disappear along the way.
Scrap metal scavengers and processors frequently carry meters to check scrap, and avoid being stuck with a very expensive problem. The operators try to trick someone else into hauling it off, who are then stuck with it. Not that that has NEVER happened with the Nuclear plant operators, but they have a lot more (and more competent) eyes on them.