Grid

Technology

TRISO IN DEPTH

TRISO (TRi-structural ISOtropic) fuel is the world’s most advanced nuclear fuel. Each particle is a miniature powerhouse, with multiple protective layers that contain the fuel and fission products, delivering unmatched safety, reliability, and performance. TRISO is the foundation for advanced reactors on Earth and in space.

A
Kernel
The kernel is the heart of the fuel, where the uranium resides. It is a precisely engineered spherical core made of uranium compounds—typically a mixture of uranium oxide and uranium carbide—designed to efficiently generate energy through fission.
B
Buffer
Surrounding the kernel is a porous carbon buffer layer that absorbs mechanical and chemical stresses from fission. Like shock absorbers in a car, it protects the outer layers by smoothing out the intense conditions created during operation.
C
IPyC
The inner pyrolytic carbon layer is the first dense, impermeable ceramic barrier. It retains gaseous and solid fission products, preventing them from migrating outward.
D
SiC
The silicon carbide layer is the fuel's primary pressure vessel. This exceptionally strong ceramic forms an impenetrable barrier, stopping remaining fission products even under extreme temperatures and irradiation.
E
OPyC
The outer pyrolytic carbon layer protects the silicon carbide and maintains it under compressive stress—an ideal condition for ceramic materials—ensuring long-term structural integrity.
TRISO layer 1TRISO layer 2TRISO layer 3TRISO layer 4TRISO layer 5

Manufacturing

Flexible manufacturing
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Flexible manufacturing detail
Flexible manufacturing

Flexible manufacturing

Our customers require fuel to a wide range of specifications. Standard Nuclear’s modular manufacturing architecture is built for flexibility, allowing us to produce diverse fuel designs on a single production line with minimal switching time and cost.

applications

terrestrial Energy

From remote communities and industrial heat to data centers, shipping, and baseload electricity, the demand for reliable nuclear power is growing rapidly. Advanced nuclear systems deliver exceptional safety and efficiency—enabled by advanced fuel. Standard Nuclear is scaling production to supply high-volume, cost-effective fuel for the world’s power generators.

terrestrial Energy
defense

Power is synonymous with operational capability in defense environments. Whether supporting nuclear systems at domestic and forward operating bases or providing radioisotope power for the most remote missions, Standard Nuclear ensures our military is never deprived of the energy it depends on.

defense
Space power

Power options diminish rapidly beyond Earth. Reaching and operating in space demands an exceptionally concentrated energy source. Where nuclear power is required, nuclear fuel is essential. Standard Nuclear is ready to deliver.

Space power