How thick will the walls of the dry casks be at Indian Point?

The Holtec’s HI-STORM 100 systems consist of three main components, which includes the overpack, the Multi-Purpose Canister (MPC) and the lids.

  1. Overpack – 27 ¾”
    1. Concrete – 27”
    2. Exterior Steel Surround – ¾”
  2. Multi-Purpose Canister (MPC) – ½” Stainless Steel
    1. This holds the spent fuel inside a basket of stainless steel and a Metamic Neutron absorber.
  3. MPC Lid – 9.5” Stainless Steel
  4. Overpack Lid – 19” Steel and Concrete