Updating the Reactor and Repository

Our ALWRs will flexibly switch between UOX and MOX when avaialble.

Reactor Modifications

Add additional entries for:

• Fresh Fuel Commodity: Fresh-MOX-Fuel
• Fresh Fuel Recipe: Fresh-UOX-Fuel
• Spent Fuel Commidity: Used-MOX-Fuel
• Used Fuel Recipe: Used-MOX-Fuel-4

Note that we are using the UOX recipe for the MOX recipe in order to have our fuel fabrication facility do its best to match that recipe by blending streams of Pu with natural U.

Under user level 1, we’ll add 2 entries for the “Fresh Fuel Preference List, one for each requested commodity. Since we want to prefer MOX fuel, the preference for MOX should be 2 times higher than that or UOX. Perhaps:

• MOX = 2
• UOX = 1

Repository Modifications

The repository only needs to change its commodity to accept only Separated-Waste.