U3O8$...0.00%|CCJ$...0.00%|OKLO$...0.00%|CEG$...0.00%|URA$...0.00%|URNM$...0.00%|NXE$...0.00%|U3O8$...0.00%|CCJ$...0.00%|OKLO$...0.00%|CEG$...0.00%|URA$...0.00%|URNM$...0.00%|NXE$...0.00%|
SECOND ATOMIC AGE

Spent Fuel Cooling

Spent fuel cooling removes decay heat from irradiated assemblies in pools or dry casks to prevent cladding breach.

Wet pools maintain <150°F with 23 ft water cover; boil-off rate ~20°F/hr post-shutdown. Post-Fukushima adds passive cooling and spray. Dry storage after 5-10 years cooling when heat <100 kW/assembly.

Why it matters now

Robust spent fuel cooling supports 2025-2026 high-burnup fuel cycles for SMRs, easing storage for data center expansions.

Sources

Last reviewed: about 2 months ago·Status: published