all cost modeling for nuclear takes this into account into the $/mwh of power. Fuel is cheap, but you have to pay back the enormous construction capex over time through power sales. Plus, staffing, security, insurance and maintaince are massive ongoing costs. Nukes remain the most expensive way to generate power.
The only cheap nuclear watts come from facilities built a long time ago in a completely different cost environment, and had construction and insurance subsidized by the state.