Saltfoss seaMSR-100 Molten Salt Reactor

The Saltfoss seaMSR-100 is a molten salt reactor delivering 100 MW electric or 250 MW of high-temperature thermal power, designed for floating deployment on the Saltfoss Power Platform. The fuel is dissolved directly in a fluoride-based FUNaK salt that also carries the heat and retains fission products.

Key features

• Fuel dissolved in FUNaK salt: no fuel rods, so a conventional meltdown cannot occur
• Near-atmospheric operating pressure: no stored pressure energy to drive an explosive release
• Passive safety: in an abnormal event the salt drains automatically into dedicated tanks where it cools and solidifies, without human or mechanical intervention
• Most fission products retained in the salt as fluoride compounds; noble gases captured continuously by an off-gas system
• Low-enriched uranium (LEU) fuel in the thermal neutron spectrum, using the existing global fuel supply chain
• Chemistry control to minimize corrosion over the reactor lifetime

Technical data

• Output per reactor: 100 MW electric or 250 MW thermal
• Operating temperature: approx. 650 °C (salt boiling point approx. 1,600 °C)
• Operating pressure: near-atmospheric
• Refueling interval: 24 years
• Platform configurations: 100-600 MW electric or 250-1,500 MW thermal, or cogeneration

Applications

• Electricity generation from floating power platforms
• High-temperature process heat for industrial sectors that are hard to electrify