On the other hand, some other reactor designs could produce a smaller volume of spent fuel, but that isn’t necessarily a smaller problem. Fast reactors, for example, achieve a higher burn-up, consuming more of the fissile material and extracting more energy from their fuel. That means spent fuel from these reactors typically has a higher concentration of fission products and emits more heat. And that heat could be the killer factor for designing waste solutions.
Spent fuel needs to be kept…

![[CITYPNG.COM]White Google Play PlayStore Logo – 1500×1500](https://startupnews.fyi/wp-content/uploads/2025/08/CITYPNG.COMWhite-Google-Play-PlayStore-Logo-1500x1500-1-630x630.png)