主要介绍了 Ti 合金在核燃料后处理设备中的应用研究进展。开发 Ti 合金替代超低碳不锈钢作核燃料后处理设备用材料已成为后处理设备用材料的发展方向。目前 Ti-5Ta 钛合金已在日本东海村后处理厂进行了中试运行,它的综合性能评价较好,...主要介绍了 Ti 合金在核燃料后处理设备中的应用研究进展。开发 Ti 合金替代超低碳不锈钢作核燃料后处理设备用材料已成为后处理设备用材料的发展方向。目前 Ti-5Ta 钛合金已在日本东海村后处理厂进行了中试运行,它的综合性能评价较好,在后处理环境中应用也最具前景。印度对其开发的 Ti-5%Ta-1.8%Nb 钛合金进行了腐蚀性能研究,结果表明它比普通低碳不锈钢和硝酸级不锈钢具有更好的耐蚀性。展开更多
This work investigates an accident during the pyrochemical extraction of Uranium and Plutonium from PWR spent fuel in an argon atmosphere hot cell. In the accident, the heavy metals (U and Pu) being extracted are acci...This work investigates an accident during the pyrochemical extraction of Uranium and Plutonium from PWR spent fuel in an argon atmosphere hot cell. In the accident, the heavy metals (U and Pu) being extracted are accidently exposed to air from a leaky instrument penetration which goes through the cell walls. The extracted pin size pieces of U and Pu metal readily burn when exposed to air. Technicians perform the electrochemical extraction using manipulators through a 4 foot thick hot cell concrete wall which protects them from the radioactivity of the spent fuel. Four foot thick windows placed in the wall allow the technicians to visually control the manipulators. These windows would be exposed to the heat of the metal fire. This analysis determines if the thermal stress caused by the fire would crack the windows and if the heat would degrade the window seals allowing radioactivity to escape from the cell.展开更多
文摘主要介绍了 Ti 合金在核燃料后处理设备中的应用研究进展。开发 Ti 合金替代超低碳不锈钢作核燃料后处理设备用材料已成为后处理设备用材料的发展方向。目前 Ti-5Ta 钛合金已在日本东海村后处理厂进行了中试运行,它的综合性能评价较好,在后处理环境中应用也最具前景。印度对其开发的 Ti-5%Ta-1.8%Nb 钛合金进行了腐蚀性能研究,结果表明它比普通低碳不锈钢和硝酸级不锈钢具有更好的耐蚀性。
文摘This work investigates an accident during the pyrochemical extraction of Uranium and Plutonium from PWR spent fuel in an argon atmosphere hot cell. In the accident, the heavy metals (U and Pu) being extracted are accidently exposed to air from a leaky instrument penetration which goes through the cell walls. The extracted pin size pieces of U and Pu metal readily burn when exposed to air. Technicians perform the electrochemical extraction using manipulators through a 4 foot thick hot cell concrete wall which protects them from the radioactivity of the spent fuel. Four foot thick windows placed in the wall allow the technicians to visually control the manipulators. These windows would be exposed to the heat of the metal fire. This analysis determines if the thermal stress caused by the fire would crack the windows and if the heat would degrade the window seals allowing radioactivity to escape from the cell.
