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Modelling long term corrosion behaviour of copper canisters in KBS-3 repository

机译：在KBS-3储存库中对铜罐的长期腐蚀行为进行建模

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摘要

The well known KBS-3 repository design involves the disposal of spent fuel in copper canisters in a deep geological repository sealed with clay based buffer and backfill materials. A one-dimensional reactive transport model has been developed to predict the evolution of the general corrosion behaviour of the copper canisters by the initially trapped O_2 and by sulphide ions. Various sources of sulphide are considered, including the microbial reduction of sulphate, the dissolution of pyrite impurities and the ground water itself. The model has been used to simulate the evolution of the canister corrosion behaviour for various scenarios, including both the Olkiluoto and Forsmark proposed repository locations, the vertical and horizontal KBS-3 design variants, increased ground water sulphide or chloride concentrations, different microbial scenarios, different rates of repository saturation, and with and without the dissolution of pyrite. Following a brief description of the model, the results of these and other simulations are described.
机译：众所周知的KBS-3储存库设计涉及在深层地质储存库中用铜基碳罐处理乏燃料，并用粘土基缓冲剂和回填材料密封。已开发出一维反应性传输模型，以预测最初捕获的O_2和硫化物离子对铜罐总体腐蚀行为的影响。考虑了多种硫化物来源，包括硫酸盐的微生物还原，黄铁矿杂质的溶解和地下水本身。该模型已被用于模拟各种情况下罐腐蚀行为的演变，包括Olkiluoto和Forsmark建议的存储库位置，垂直和水平KBS-3设计变体，地下水中硫化物或氯化物浓度增加，不同微生物场景，储层饱和度的不同速率，有无黄铁矿溶解。在简要描述模型之后，将描述这些模拟和其他模拟的结果。

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