Core to exchanger
Hot fuel salt exits the core and transfers heat through engineered intermediate loops.
Storage fitFuel salt loop
The liquid-fuel circuit is the plant's economic center.
In an MSBR, fuel salt carries actinides, heat, and operating chemistry through the core and into heat exchange systems. The loop must be engineered like a reactor and a chemical process system at the same time.
Loop functions
Fuel, coolant, and process stream
The loop has to move heat reliably, protect salt chemistry, tolerate radiation fields, and support draining or isolation strategies for maintenance and abnormal events.
LowPressure operation
OnlineFuel management
Design priorities
The salt loop is where MSBR value either compounds or disappears. Component layout should minimize inventory, simplify inspection, support freeze protection, and make heat delivery a first-class product.
Primary circulationPumps, vessel internals, and piping maintain predictable salt flow through the power region.
Heat exchangeIntermediate loops isolate the fuel salt while moving high-temperature heat to customers or turbines.
Drain strategyFreeze valves, drain tanks, and decay heat pathways shape the plant's passive response concept.
Salt inventoryEconomic design keeps valuable actinides working while limiting unnecessary loop volume.
Next: online chemistry
The same loop that moves heat also gives the operator access to chemistry control and fission product management.