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SUMMARY:Corrosion Studies on Copper-Coated Carbon Steel Containers for Use
 d Nuclear Fuel - Prof. James J. Noël (The University of Western Ontario\,
  London\, Canada)
DTSTART:20191126T150000Z
DTEND:20191126T160000Z
UID:TALK135403@talks.cam.ac.uk
CONTACT:Lingtao Kong
DESCRIPTION:Canada’s plan for the permanent disposal of used nuclear fue
 l involves sealing the used fuel bundles in Cu-coated carbon steel contain
 ers and placing them in a deep geological repository (DGR)\, surrounded by
  a compacted swelling bentonite clay which will buffer the containers and 
 seal the DGR\, forming an effective multi-barrier containment system. In t
 he current container design specified by the Nuclear Waste Management Orga
 nization (NWMO)\, the Cu coating (~3 mm–thick) will provide corrosion pr
 otection\, while the carbon steel inner vessel will provide the necessary 
 mechanical strength. A comprehensive program of experimental studies in ma
 terials degradation is being conducted to evaluate the longevity of the co
 ntainer in the DGR environment as it evolves from hot and oxidizing to coo
 l and anoxic over time\, including localized corrosion\, corrosion at a co
 ating defect\, corrosion in trace sulphides under anoxic conditions\, and 
 the effects of hydrogen absorption. We are also investigating the degradat
 ion of the nuclear fuel itself\, which could take place according to proce
 sses very similar to the corrosion reactions of metals. This talk will pro
 vide an overview of the approaches and findings of the corrosion programs 
 in my laboratory.
LOCATION:Department of Chemistry\, Cambridge\, Unilever lecture theatre
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