In order to avoid restrictive fissile loading limits in some types of US Department of Energy (DOE) spent nuclear fuel, nuclear criticality control measures are needed in standardized waste packages for long-term disposal of high-level radioactive materials in the proposed Yucca Mountain repository. This need has been addressed by development of a corrosion-resistant, neutron-absorbing structural alloy for nuclear criticality control. Applications for the alloy include internals (e.g., baskets) for storage, transportation, and disposal of radioactive material (RAM). This paper outlines results of a metallurgical development program that alloyed gadolinium into a nickel-chromium-molybdenum matrix. Gadolinium was chosen as a neutron-absorption alloying element due to its high thermal neutron absorption cross section and low solubility in the anticipated repository environment. The nickel-chromium-molybdenum alloy family was chosen for its known corrosion performance, mechanical properties, and weldability. An ASTM International Material Specification has been issued for the alloy and a Code Case has been approved by the American Society of Mechanical Engineers for RAM package applications. Mechanical and physical property data for the alloy are provided in this paper.
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ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference
July 23–27, 2006
Vancouver, BC, Canada
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4758-6
PROCEEDINGS PAPER
A New Ni-Cr-Mo-Based Gadolinium Structural Alloy for Neutron Adsorption Application in Radioactive Material Packages
Paul McConnell,
Paul McConnell
Sandia National Laboratories, Albuquerque, NM
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Charles Robino,
Charles Robino
Sandia National Laboratories, Albuquerque, NM
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Ron Mizia,
Ron Mizia
Idaho National Laboratory, Idaho Falls, ID
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Gregg Wachs,
Gregg Wachs
Idaho National Laboratory, Idaho Falls, ID
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William Hurt
William Hurt
Idaho National Laboratory, Idaho Falls, ID
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Paul McConnell
Sandia National Laboratories, Albuquerque, NM
Charles Robino
Sandia National Laboratories, Albuquerque, NM
Ron Mizia
Idaho National Laboratory, Idaho Falls, ID
John DuPont
Lehigh University, Bethlehem, PA
Gregg Wachs
Idaho National Laboratory, Idaho Falls, ID
William Hurt
Idaho National Laboratory, Idaho Falls, ID
Paper No:
PVP2006-ICPVT-11-93042, pp. 453-462; 10 pages
Published Online:
July 23, 2008
Citation
McConnell, P, Robino, C, Mizia, R, DuPont, J, Wachs, G, & Hurt, W. "A New Ni-Cr-Mo-Based Gadolinium Structural Alloy for Neutron Adsorption Application in Radioactive Material Packages." Proceedings of the ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. Volume 7: Operations, Applications, and Components. Vancouver, BC, Canada. July 23–27, 2006. pp. 453-462. ASME. https://doi.org/10.1115/PVP2006-ICPVT-11-93042
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