The Defense Nuclear Facilities Safety Board (DNFSB), which conducts oversight of DOE projects , has confirmed that plutonium from SRS was taken to the Pantex site in Texas, for storage. Sounds like it’s being stored in bunkers where plutonium pits (from nuclear weapons) are stored.
It is unclear what the fate of this plutonium will be, which was removed from SRS due to legal requirements to do so. the amount that went to Pantex is likely 500 kilograms (0.5 metric tons). 3 kg is enough for a pit in a nuclear weapon.
Will the Pu be shipped for a nuclear weapons use or will it be processed into oxide (if DOE moves the ARIES plutonium oxide conversion process from Los Alamos National Lab to Pantex)? SRS Watch has a Freedom of Information Act request in to DOE concerning the legally required analysis of moving ARIES to Pantex. As usual, as the secretary of energy isn’t doing her job or paying attention to the public, that request languishes.