Where does nuclear waste go from a nuclear submarine?

Answer 1

In the United States, when a nuclear submarine has "run out of" nuclear fuel for its reactor (this takes many years), the reactor may be opened, and the spent fuel sent for reprocessing at the Naval Reactors facility at the Idaho National Laboratory. The reactor's core may then be refueled. This process can take some time, and handling the spent fuel is dangerous and requires complex procedures to prevent contamination. If the submarine is to be overhauled, or retired, the fuel is removed for reprocessing, and the reactor compartment is cut out of the submarine, sealed, and moved for disposal to the Department of Energy's Hanford Nuclear Reservation in Washington state, where they are kept in dry storage. The submarine may be welded back together, or the sections floated, until a new compartment and reactor are installed, or the vessel is cut up for scrap. Low level radioactive waste may be handled in other ways.