cover image: NWMO-TMP-AD-0007-R003 – Technical Report

20.500.12592/qkfsdg

NWMO-TMP-AD-0007-R003 – Technical Report

18 Nov 2021

The reaction of sulfide with copper is kinetically fast, and the rate of the reaction is dependent on the sulfide concentration and its flux toward the copper-coated container. [...] Previously, the NWMO supported the development of a 3D COMSOL Multiphysics model to predict the rate of sulfide diffusion from the host rock interface to the container and the resulting extent of corrosion (Briggs and Krol 2018). [...] THE GEOCHEMISTRY OF THE CANADIAN DEEP GROUNDWATER SYSTEM INTRODUCTION The geochemistry of deep groundwater is determined mainly by two factors, i.e., the origin of the groundwater and the in-situ water-rock interactions that follow. [...] The residence time of the groundwaters in the Precambrian cratons can vary from hundreds of thousands of years to hundreds of millions of years, e.g., in the Witwatersrand Basin in South Africa (Heard et al. [...] A compilation of δ2H and δ18O values in the porewater from the same level in a number of other boreholes in the Geosynthesis (NWMO 2011) shows that the porewaters in the Cobourg Formation display obvious 18O depletion (-8‰ to -3‰) relative to seawater (~0‰), which also indicates that a second water source has contributed to the groundwater in the Cobourg limestones.

Authors

srussell

Pages
132
Published in
Canada