Abstract
The local environment in an occluded region of a pressurized water reactor (PWR) depends on its geometry,
its access to the bulk and the nature of the electrode kinetics at the metal surfaces. In PWR-relevant,
oxygen-free, boric acid–lithium hydroxide solutions the dominant anodic and cathodic electrode
reactions are found to be hydrogen oxidation and water reduction, respectively. The hydrogen oxidation
reaction kinetics have been quantified using potentiostatic measurements – at 300 C, under various dissolved
hydrogen concentrations, for 1000 ppmB and 2 ppmLi. The reaction kinetics have been verified by
modelling of a crevice experiment performed in an autoclave at 300 C for 1000 ppmB, 2 ppmLi and 25
STP ccH2/kg.
Details
Original language | English |
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Pages (from-to) | 331-339 |
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Journal | Journal of Nuclear Materials |
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Volume | 377 |
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Issue number | 2 |
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DOIs | |
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Publication status | Published - 1 Jul 2008 |
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