High Temperature Gas-Cooled Reactors, Prismatic

High-temperature, gas-cooled reactors with an closed-loop turbojet combustion system integrated into the core unit, eliminating balance of plant (BoP) components. Dry cooling supports the combined Brayton-organic Rankine power conversion cycle, and Holos Generators are capable of high-resolution, automatic load following. The core is formed through the neutronic coupling of independently subcritical, integral power modules, actively positioned on-site by an Automatic Module Positioning System (AMPS). Entire Holos Quad generators, capable of producing up to 13 MWe without fit inside a single ISO container; the larger Holos Titan generators, housed in 12 ISO containers would be capable of producing up to 81 MWe. A smaller Holos generator for rapid deployment applications (like emergency response) would be configured for air transport and for use as stand-alone electric islands without need for substation switchyard equipment.

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.

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.

This hybrid system produces a peaking power of 850 MWe via a prismatic high-temperature gas reactor coupled to a natural gas-fired facility, enabling rapid load-following. The nuclear system is moderated by graphite and utilizes low-enriched TRISO fuel with a 2-year refueling cycle. An open-system Brayton cycle combustion turbine with a bottoming Rankine steam cycle enables very high thermal efficiencies.

The SC-HTGR is a modular graphite-moderated, helium-cooled high temperature gas-cooled reactor with a prismatic block-type core configuration. This 625 MWt TRISO-fueled reactor is most suitable for industrial applications and may also be used for electricity generation.