Patent ID: 11881323
Assignee: HOLTEC INTERNATIONAL
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A passively ventilated nuclear waste storage system comprising:
a lower cavity enclosure container configured for mounting at least partially below grade, the cavity enclosure container comprising at least one first air inlet and a first internal cavity configured for holding a first canister which contains radioactive nuclear waste; and
an upper cask comprising a second internal cavity configured for holding a second canister which contains radioactive nuclear waste, the cask being located above grade;
at least one air outlet configured to allow heated air in a top portion of the second internal cavity to exit the second internal cavity of the cask;
the cask stacked atop the lower cavity enclosure container in a vertically stacked arrangement so that an interface is formed between the cavity enclosure container and the cask;
wherein the first and second internal cavities are fluidly interconnected so that heated air in a top portion of the first internal cavity can flow into a bottom portion of the second internal cavity;
wherein the upper cask is mounted on an above grade concrete top pad surrounding an upper portion of the cavity enclosure container.