Disadvantages
- Little development compared to most Gen IV designs - much is unknown.
- Need to operate an on-site chemical plant to manage core mixture and remove fission products.
- Lithium containing salts will cause significant tritium production (comparable with heavy water reactors), even if pure 7Li is used.
- Likely need for regulatory changes to deal with radically different design features.
- Corrosion may occur over many decades of reactor operation and could be problematic.
- Nickel and iron based alloys are prone to embrittelment under high neutron flux.
Read more about this topic: Beryllium Moderated Reactors