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Nano Nuclear Energy obtained formal NRC acceptance for a microreactor construction permit. Its KRONOS and ZEUS microreactors use TRISO fuel and helium cooling, requiring no water and enabling safe shutdown without external power. The company's solid-core, factory-fabricated designs offer portable, carbon-free power for remote sites and data centers. IAEA projects global nuclear capacity to more than double by 2050 with SMRs playing a key role.

Antares achieved criticality in a test reactor at Idaho National Laboratory. The milestone marks the first time a small modular nuclear reactor design has reached self-sustaining nuclear reactions. The reactor uses TRISO fuel with uranium oxide pellets encased in carbon and ceramic layers. The design contains fuel pellets within a graphite sheath to limit neutron escape and isotope formation.
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