The US Department of Energy said performance data will be shared with US nuclear companies to improve sensor instrumentation for advanced light-water small modular reactors.
The data could also be used to support other advanced reactor types cooled by gas, liquid metal or molten salt. ORNL tested the nuclear-grade resistance temperature detectors using a thermosyphon test loop and a specialised steam loop constructed specifically for the project.
Validation of the instruments’ ability to perform is subject to strict regulatory scrutiny because the signals involved are used to initiate a safe shutdown of the reactor during an incident.