| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Irradiation Testing: Facilities, Capabilities, and Experimental Designs
|
| Presentation Title |
Advancing Thermo-physical Property Characterization Techniques and Methods for Irradiated Nuclear Fuels |
| Author(s) |
Tsvetoslav R. Pavlov |
| On-Site Speaker (Planned) |
Tsvetoslav R. Pavlov |
| Abstract Scope |
The thermo-physical properties of nuclear fuels govern the operational and off-normal behavior of nuclear reactors. At Idaho National Laboratory equipment has been developed and deployed for the measurement of thermo-physical properties of in-reactor irradiated nuclear materials. The equipment comprises of a laser flash analysis (LFA) set-up, a thermal conductivity microscope (TCM) and a simultaneous thermal analyzer coupled with a mass spectrometer (STA-MS). A custom laser flash data analysis method has been developed to accurately measure the thermal diffusivity of asymmetrical geometries such as cladding specimen as well as composite materials and encapsulated samples such as molten salts. The TCM is an in-house built setup which is based on the thermo-reflectance technique and facilitates local thermal conductivity measurements with a resolution of the order 50 µm. For the first time local, meso-scale thermal diffusivity and thermal conductivity measurements have been performed on neutron irradiated U3Si2, UO2, MOX and TRISO fuels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Nuclear Materials, Other |