CORROSION OF COPPER COATED NUCLEAR WASTE CONTAINERS BY NITRIC ACID DROPLETS


41th Annual CNS-CNA Student Conference - 2017 June 05

Presented at:
41th Annual CNS-CNA Student Conference
2017 June 05
Location:
Niagara Falls, ON Canada
Session Title:
Student Posters, Wine-&-Cheese Reception

Authors:
J. Turnbull (Western University)
R. Szukalo (Western University)
M. Behazin (Western University)
D. Zagidulin (Western University)
S. Ramamurthy (Western University)
D. Shoesmith (Western University)
J. Wren (Western University)
  

Abstract

The Canadian plan for the disposal of high level nuclear waste is to seal it in Cu-coated steel containers and bury it in a deep geologic repository. Gamma radiation from the spent nuclear fuel can produce HNO3 by radiolysis of aerated H2O vapour which could condense on the canister surface potentially resulting in localized corrosion. The goal of this project is to investigate the mechanism and kinetics of this corrosion process. Nitrate and O2 could both act as oxidants. Experiments are currently underway to investigate the evolution of the corrosion process and to separate the contributions of the individual oxidants.

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