SVBR design has been around since 1995 or so. Other than geopolitical issues, main problem is that any mass production would eat considerable percentage of worl

SVBR design has been around since 1995 or so. Other than geopolitical issues, main problem is that any mass production would eat considerable percentage of world's bismuth production. However the design is safe and based on battle-tested submarine reactors from Alfa class attack subs.