Where does excess uranium 238 goes?

Question

Natural uranium is 0.7% U-235 and the rest is U-238. For nuclear reactor you need enriched uranium with higher percentage of U-235. But what to do with U-238 if it’s useless as reactor fuel, as a nuclear weapon, and still radioactive to use it as regular material.

In: Physics

Answer 1

Most of the answers are covered but sometimes it actually IS used in nuclear reactors, just not as fuel (yet).
Breeder reactors are sometimes used to turn u238 into plutonium 239, which is then used in weapons etc