Oh yeah, this should work out well. The Soviets used molten salt technology in their submarine reactors decades ago. Massive problems and dead sailors on a regular basis according to intel at the time...
that would be the first time I heard that the russians successfully produced molten salt reactors. the way I heard it was that in the 60’s & 70’s the russians and indians both tried to do molten salt reactors but when the USA gave up both the russians and the indians gave up on molten salt reactors.
Sodium cooled-mix with water “Boom”! Lead/ Bismuth also used as coolant.