Spent Fuel Storage

Used Fuel Pool Safety

NuScale always puts safety first. We have taken the time to examine how we store Used fuel and put in place the necessary efficiencies.


The NuScale Used fuel pool provides storage for up to 10 years of Used fuel storage, plus temporary storage for new fuel assemblies. The pool water volume provides approximately 150 days of passive cooling of the Used fuel assemblies following a loss of all electrical power without the need for additional water.

The NuScale Used fuel pool is a below-grade, stainless steel lined concrete pool adjacent to the reactor pool. Its below-grade position greatly reduces potential for loss of cooling water. A clean-up system reduces the build-up of contaminants.

After removal from the reactor core, Used fuel assemblies are placed in dedicated Used fuel storage racks in the below ground Used fuel pool, which contains four times more water volume for cooling per fuel assembly than current designs. Use of standard LWR fuel allows leveraging extensive experience and infrastructure for the storage, handling, and shipment of Used reactor fuel. Our facility is designed for ease of Used fuel transfer to a dry cask storage system. Within approximately 5 years, the thermal load of the Used fuel assemblies is reduced significantly, and can be moved to a secure dry storage area. The plant site layout includes space allocation adequate for the dry storage of all the Used fuel for the 60-year life of the plant.

Through our efforts, we are not only creating a new nuclear power for the future but ensuring that we protect and preserve it as well.

Spent Fuel Pool