The US Department of Energy has approved the safety design strategy for Los Angeles-based Radiant Industries’ Kaleidos microreactor, a portable nuclear plant which can be deployed almost anywhere and which will be tested at the Idaho National Laboratory (INL).

The safety design strategy, which describes the safety analysis approach for the Kaleidos plant, marks the initial stage in a comprehensive safety review process each microreactor developer will undertake before a fuelled test at the Idaho facility.

Radiant said the Kaleidos will be the first new commercial reactor design to achieve a fuelled test in over 50 years.