In-core fuel performance and material characterization in the Halden reactor

Reliable in-core instrumentation has been developed for measuring all key parameters for fuel studies such as fission gas release, fuel temperature, fuel swelling, cladding creep, etc. For material corrosion studies, new electrochemical sensors have been developed, allowing performing in-pile electrochemical impedance spectroscopy. A prototype in-core eddy current based probe has been developed for measuring the oxide thickness on fuel cladding.