AHTR-100
South Africa
Basics
Reactor Type
Gas Cooled Reactor
Gas cooled reactor
Primary heat transport: mostly CO2 or helium gas
Primary heat transport: mostly CO2 or helium gas
Reactor Description
High temperature pebble bed GCR
HTGR fuel element form consisting of movable spherical elements
The fuel elements of tennis-ball size are called pebbles
The fuel elements of tennis-ball size are called pebbles
Electric Output (MWe)
50
Thermal Output (MWt)
100
Size
Small
'Small' size
Electric output of between 10 MWe and 100 MWe
Electric output of between 10 MWe and 100 MWe
Spectrum
Thermal
Kinetic neutron energy of 0.000…0.025 eV
Slow or cold neutron / moderated neutron spectrum
Slow or cold neutron / moderated neutron spectrum
Developer
Eskom Holdings SOC.
Pilot Site Details
N/A
Details
Use (goal of commercial operation)
N/A
Deployment medium
Land-based
Design Lifetime (Years)
40
Fuel
Fuel class
HALEU
High-assay low enriched uranium
Uranium enriched to 5…20 percent U-235
Uranium enriched to 5…20 percent U-235
Fuel Type
TRISO Pebble
Tristructural isotropic (nuclear fuel)
Consists of movable spherical elements of tennis-ball size called pebbles
Consists of movable spherical elements of tennis-ball size called pebbles
Fuel Cycle
N/A
Refuelling Cycle
N/A
Cooling & Temperature
Reactor cooling of primary loop
Helium
Reactor moderator
Graphite
Crystalline allotrope of element carbon
Special quality characteristics as moderator
Special quality characteristics as moderator
Reactor Outlet Temperature (°C)
1200
Status
Design status
Conceptual design
Licensing status
N/A
Deployment timeline
N/A
Agreements and Engagement
N/A