Why in News?
- The US Department of Energy has selected Standard Nuclear as the first company to develop next‑generation TRISO nuclear fuel, aiming to reduce reliance on Russian uranium and support advanced reactors.
What Is TRISO Fuel?
- TRISO stands for “tri‑structural isotropic” fuel. Each tiny particle contains a kernel of uranium, carbon and oxygen.
- The kernel is encased in three layers of carbon‑ceramic materials that act as a miniature containment system, preventing the release of radiation.
- These particles can be shaped into pellets or pebbles for use in advanced reactors.
Key Features
- Extreme durability: Resistant to high temperatures, neutron irradiation, corrosion and oxidation.
- Built‑in safety: Each particle acts as its own containment vessel, reducing the risk of radioactive leakage even under accident conditions.
- Versatility: Suitable for use in molten‑salt reactors, high‑temperature gas‑cooled reactors and small modular reactors.
Significance
- Supports the development of Generation IV reactors and small modular reactors, which promise higher efficiency and enhanced safety.
- Reduces dependence on imported uranium, strengthening domestic energy security.
- Advances nuclear innovation as part of broader clean‑energy strategies.
Conclusion
TRISO fuel represents a significant step forward in nuclear technology. By offering safer and more efficient performance, it could help drive a new wave of nuclear energy while reducing reliance on volatile supply chains.