This special issue of the Journal of Nuclear Engineering and Radiation Science features selected papers from the 7th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR7), held from March 15 to 18, 2015, in the Radisson Blu Royal Hotel in Helsinki, Finland, 15 years after the first International Symposium was held on this topic in Tokyo, Japan. Like the 4th Symposium (2009) in Germany, the 5th Symposium (2011) in Canada, and the 6th Symposium (2013) in China, this International Symposium attracted more than 100 participants from nuclear industry, research centers, and universities mainly from Canada, China, Europe, Japan, and Russia. Within three days, about 100 presentations were given on design, safety issues, materials, thermal-hydraulics, and qualification tests of this Generation IV nuclear energy system, providing a worldwide forum for information exchange on innovative nuclear research and technologies.
While dozens of water-cooled reactors are being built today, we should not give up...