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首页> 外文会议>Safety Related Issues of Spent Nuclear Fuel Storage; NATO Security Through Science Series C: Environmental Security >CORROSION OF RESEARCH REACTOR ALUMINUM CLAD SPENT FUEL IN WET STORAGE
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CORROSION OF RESEARCH REACTOR ALUMINUM CLAD SPENT FUEL IN WET STORAGE

机译：湿法储存中研究反应堆铝包油的腐蚀

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This paper gives an overview of activities carried out at IPEN, Brazil, in the IAEA-sponsored Coordinated Research Project (CRP) "Corrosion of Research Reactor Al-clad Spent Fuel in Water" and in the Latin American regional project on "Management of Spent Research Reactor Fuel". In both projects Al alloy coupons in various configurations were exposed to the spent fuel storage pool of the IEA-R1 reactor for various times and then examined. Pitting was the main form of corrosion and pit distribution on coupons revealed the marked influence of settled solids. The AA6061 and AA1050 alloy coupons withdrawn after 2 years were stained with a layer of Bayerite caused by an increase in the average pool water temperature. This observation—part of a normal sequence of activities within the project—enabled reactor operations to explain the perplexing change in color of most in-reactor Al alloy components. It exemplified advantages of conducting a corrosion surveillance program. Analysis of sediments obtained from the pool revealed that the main constituents were oxides of aluminum, iron, silicon, and calcium. Coupons of the Russian alloy SZAV, pitted more inside crevices compared to the alloy AA6061. The former pitted more when coupled with stainless steel. Alloy grain orientation also influenced pitting. Coupons of rolled AA6061 alloy pitted more than coupons made from extruded AA6061 alloy. Details about the spent fuel storage facilities in IPEN and the water purification systems of the IEA-R1 research reactor (RR) are also presented.
机译：本文概述了在巴西IPEN，由国际原子能机构赞助的协调研究项目（CRP）“研究堆堆装的乏燃料在水中的腐蚀”以及在拉丁美洲的“乏燃料管理”区域项目中开展的活动的概况。研究堆燃料”。在这两个项目中，将各种配置的铝合金样板暴露于IEA-R1反应堆的乏燃料储存池中不同的时间，然后进行检查。点蚀是腐蚀的主要形式，试样上的点蚀分布表明沉降固体的显着影响。 2年后撤回的AA6061和AA1050合金试样被平均池水温度升高引起的一层拜耳石染色。该观察结果是该项目正常活动顺序的一部分，使反应堆操作能够解释大多数反应堆内铝合金部件颜色的令人困惑的变化。它体现了进行腐蚀监控程序的优势。对从水池中获得的沉积物的分析表明，主要成分是铝，铁，硅和钙的氧化物。与AA6061合金相比，俄罗斯SZAV合金的优惠券在内部缝隙上的凹陷更多。当与不锈钢结合使用时，前者会产生更多的蚀痕。合金晶粒取向也影响点蚀。轧制AA6061合金的优惠券比挤制AA6061合金制成的优惠券进蚀更多。还提供了有关IPEN中乏燃料存储设施和IEA-R1研究堆（RR）的水净化系统的详细信息。

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