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Russia's Rosatom says two reactor vessels and eight steam generators are being shipped to Kudankulam unit 5 in India and Tianwan unit 7 in China, calling it the first time two sets of such equipment h...
Radiation from early universe found key to answer major questions in physics
Radiation early universe found key answer major questions physics
2014/6/12
Astrophysicists at UC San Diego have measured the minute gravitational distortions in polarized radiation from the early universe and discovered that these ancient microwaves can provide an important ...
调研了国外核电厂长寿命化研究、开发工作的现状，提出了核电厂长寿命化的若干关键问题。对压水堆（PWR）、沸水堆（BWR）运行过程中发生的设备老化、降级问题及其原因的调查分析表明，不可更换部件及更换极困难部件的寿命，制约或极大程度地影响了电厂的寿命，这些设备是：反应堆压力容器、堆内构件、安全壳及部分构筑物；在设备老化机理中，关键问题是中子辐照脆化、腐蚀损伤、疲劳及磨损。