Holtec President says HI-STORM dry storage casks can last 300 years

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Holtec HI-STORM 100

Holtec International President Kris Singh told the Vermont Nuclear Decommissioning Citizens Advisory Panel on Friday that the HI-STORM (Holtec International Storage Module) spent nuclear fuel storage casks constructed by his company can withstand cold weather and even being flooded.

Singh asserted that the HI-STORM casks were the best and safest in the world and claimed that each cask would last 300 years — even though the longest a HI-STORM cask has been used in the field is only 15 years.

Each cask is constructed out of stainless steel and high-density concrete.  One of the features of the casks is that they don’t have welds, which are prone to leaking.  They are designed to withstand high-impact crashes, high temperatures and bullets.

A dry storage cask prepared for loading
A dry storage cask prepared for loading
The cask is placed in the spent fuel pool to load spent fuel assemblies.
The cask is placed in the spent fuel pool to load spent fuel assemblies.
After the spent fuel assemblies are loaded the top of the cask is welded shut
After the spent fuel assemblies are loaded the top of the cask is welded shut
After they are sealed the canisters are placed inside of the overpack.
After they are sealed the canisters are placed inside of the overpack.
The loaded cask is transported to the above-ground storage pad.
The loaded cask is transported to the above-ground storage pad.
A view of loaded casks
A view of loaded casks
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