工业用纯水核反应堆中所使用的压力容器钢在发电站的整个使用期间要承受到强大的辐射。由于辐照的结果,压力容器钢的机械性能会发生很大的变化,随着辐照量的增加,这种变化也就越剧烈。因此,必须调整发电站的压力温度操作曲线。使用夏氏V形缺口的冲击试样的目的是为了监测其机械性能的变化。定期从每一核反应堆中取出装有V形缺口和其它形式试样的监视盒,并将其送到高温实验室,再在此实验室里将监视盒打开,取出试样。由于监视盒和试样都具有放射性,因此这种操作及其随后的试验都必须在高温箱里进行远距离的操作。在巴特勒-哥伦布高温试验室里安 Pressure vessel steel used in industrial pure water nuclear reactors is exposed to strong radiation throughout the life of the power station. As a result of irradiation, the mechanical properties of pressure vessel steels change dramatically, and as the amount of radiation increases, the change becomes more intense. Therefore, it is necessary to adjust the pressure and temperature operating curve of the power station. The purpose of using Charpy V-notch impact specimens is to monitor changes in their mechanical properties. Periodically, a surveillance cassette containing V-shaped notches and other types of specimens was taken from each nuclear reactor and sent to a high temperature laboratory where the surveillance cassette was opened to remove the specimen. Due to the radioactive nature of both the monitor box and the sample, this operation and its subsequent tests must be performed remotely in a high-temperature oven. Ann Butler - Columbus high temperature laboratory Ann