Advanced (non-LWR) Fission Reactors

SmAHTR is a fluoride salt-cooled, graphite moderated molten salt reactor that utilizes solid, static, LEU-based TRISO fuel with a capacity of 125 MWt/50MWe. All primary components are integrated into a single vessel. A design variant for hydrogen production applications, the SmAHTR-CTC (carbonate thermochemical cycle), is also under development.

The FHR is a fluoride-based salts-cooled, high-temperature thermal spectrum reactor with solid, pebble-type TRISO uranium fuel. Its "Nuclear Air Combined Cycle" system enables highly responsive electricity generation through co-firing with natural gas or hydrogen.

GTHTR300 is a helium-cooled, graphite-moderated thermal spectrum, prismatic high-temperature gas-cooled reactor with 14% enriched uranium-based TRISO fuel with flexible industrial/electricity generation applications. It provides a maximum of 600 MWt power and 100-300 MWe, depending on its application.

ASTRID is a sodium-cooled, pool-type fast spectrum reactor fueled by mixed oxide (MOX) fuel with a capacity of 1500 MWt/600 MWe. As an industrial demonstration reactor, ASTRID will be used to optimize the design of future commercial reactors under the umbrella of the Generation IV forum (GIF).

As part of the Heavy Liquid Metal Coolant (HLMC) research initiative, Argonne National Laboratory (ANL) has developed multiple multiple advanced reactor technologies, including the Secure Transportable Autonomous Reactor with Liquid Metal (STAR-LM) and the Small Secure Transportable Autonomous Reactor (SSTAR). SUPERSTAR, a lead-cooled, pool-type fast spectrum reactor is the most recent HLMC research initiative design. It has a capacity of 300 MWt/120 MWe is designed for electricity generation on the export market.

Fueled by plutonium and thorium, this pressure tube-type SCWR operates in the thermal neutron spectrum at a high pressure of 25 MPa. It is moderated by heavy water and cooled by supercritical light water, utilizes a direct steam cycle power conversion system, and has a capacity of 2540 MWt/1200 MWe. AECL is also developing a small, modular version of its SCWR called the Supersafe Reactor (SSR).

The SSR is a zirconium and sodium fluoride salts-cooled, graphite-moderated thermal spectrum molten salt reactor. 8 37.5 MWe modules form a standard 750 MWt/300MWe unit. The static form of the liquid fuel salt eliminates many of the technical hurdles associated with mobile, liquid fuels typical to molten salt reactors; fuel assemblies are designed for compatibility with existing IAEA Safeguard procedures

Oklo's reactor is a liquid metal-cooled, fast spectrum reactor utilizing a metallic fuel. It is designed to be small, portable, and suitable for remote deployment.

The MMR is a 5 or 10 MWe gas-cooled, graphite-moderated thermal spectrum advanced reactor. It is fueled by Ultra Safe Nuclear Corp.'s own Fully Ceramic Microencapsulated (FCM), TRISO-based fuel and is designed for 20+ years without refueling. In this design, power production, power conversion and electricity generation are integrated into a single factory-fabricated vessel. A service agreement is under development as part of the Canadian Nuclear Safety Commission's Pre-Licensing Vendor Design Review process.

The Canadian SCWR is a pressure tube-type supercritical water-cooled, heavy water-moderated thermal spectrum reactor with an output of 2540 MWt/1200 MWe.