Monolithic plate-type fuel is a fuel form being developed for high performance research and test reactors to minimize the use of enriched material. These plate-type fuels consist of a high uranium density LEU foil contained within diffusion barriers and encapsulated within a cladding material. To benchmark this new design, effects of various geometrical and operational variables on irradiation performance have been evaluated. For this work, the effects of fuel foil centering on the thermo-mechanical performance of the mini-plates were studied. To evaluate these effects, a selected plate from RERTR-12 experiments, the Plate L1P756, was considered. The fuel foil was moved within the fuel plate to study the effects of the fuel centering on stress, strain and overall shape of the fuel elements. The thickness of the fuel foil, thickness of the Zr-liners and total thickness of the plate were held constant, except the centerline alignment of the fuel foil. For this, the position of the fuel foil was varied from the center position to a maximum offset corresponding to the minimum allowable aluminum cladding thickness of 0.1524 mm. Results for various offset cases were then compared to each other and to the ideal case of a centered fuel foil. Fabrication simulations indicated that the thermal expansion mismatch results in warping of the fuel plate during fabrication as the fuel plate is cooled from the HIP temperature when the fuel is not centered. Even if the model is constrained during cooling to simulate the rigid HIP can surrounding the fuel plate during cooling, warping is observed when the constraint is removed. Similarly, irradiation simulations revealed that the fuel offset causes virtually all irradiation-induced swelling to occur on the thin-cladding side of the plate. This is observed even for the smallest offset that was considered. The total magnitude of the swelling is approximately same for all offsets values.
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ASME 2015 Nuclear Forum collocated with the ASME 2015 Power Conference, the ASME 2015 9th International Conference on Energy Sustainability, and the ASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology
June 28–July 2, 2015
San Diego, California, USA
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-5686-4
PROCEEDINGS PAPER
Effects of the Foil Centering on the Irradiation Performance of U10Mo Alloy Based Monolithic Mini-Plates
Jill Wright,
Jill Wright
Idaho National Laboratory, Idaho Falls, ID
Search for other works by this author on:
Hakan Ozaltun
Hakan Ozaltun
Idaho National Laboratory, Idaho Falls, ID
Search for other works by this author on:
Jill Wright
Idaho National Laboratory, Idaho Falls, ID
Hakan Ozaltun
Idaho National Laboratory, Idaho Falls, ID
Paper No:
NUCLRF2015-49462, V001T03A003; 10 pages
Published Online:
October 27, 2015
Citation
Wright, J, & Ozaltun, H. "Effects of the Foil Centering on the Irradiation Performance of U10Mo Alloy Based Monolithic Mini-Plates." Proceedings of the ASME 2015 Nuclear Forum collocated with the ASME 2015 Power Conference, the ASME 2015 9th International Conference on Energy Sustainability, and the ASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology. ASME 2015 Nuclear Forum. San Diego, California, USA. June 28–July 2, 2015. V001T03A003. ASME. https://doi.org/10.1115/NUCLRF2015-49462
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