This is why we need to move away from pressurized water based reactors. Most of this material is in the shielding needed because the system is designed around k

This is why we need to move away from pressurized water based reactors. Most of this material is in the shielding needed because the system is designed around keeping water at several hundred atmospheres pressure. Operating at atmospheric should dramatically reduce materials costs going forward (but still needs substantial research investment to get going and regulators that aren't so stuck in their ways)