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Nuclear Science and Engineering
Fusion Science and Technology
A day in the life of the nuclear community
The November issue of Nuclear News is focused on the individuals who make up our nuclear community.
We invited a small group of those individuals to tell us about their day-to-day work in some of the many occupations and applications of nuclear science and technology, and they responded generously. They were ready to tell us about the part they play, together with colleagues and team members, in supplying clean energy, advancing technology, protecting safety and health, and exploring fundamental science.
In these pages, we see a community that can celebrate both those workdays that record progress moving at a steady pace and the exceptional days when a goal is reached, a briefing is delivered, a contract goes through, a discovery is made, or an unforeseen challenge is overcome.
The Nuclear News staff hopes that you enjoy meeting these members of our community—or maybe get reacquainted with friends—through their words and photos.
Yi Xu, Hong Li, Feng Xie, Jianzhu Cao, Jiejuan Tong
Fusion Science and Technology | Volume 71 | Number 4 | May 2017 | Pages 671-678
Technical Note | dx.doi.org/10.1080/15361055.2017.1290949
Articles are hosted by Taylor and Francis Online.
The Very High Temperature Reactor (VHTR) is one of the six proposed Generation IV reactor concepts. The HTR-10, a 10 MW high temperature gas-cooled reactor was a helium cooled, graphite-moderated, and thermal neutron spectrum reactor. Since tritium (H-3) has an effect on the environment and public radiation dose, it has received more and more attention in the environmental impact assessment of nuclear facilities. Recently, several experiments on source terms in HTR-10 have been run, of which preliminary measurements indicated H-3 was an important nuclide in the primary loop of HTR-10. The production mechanism, distribution characteristic, reduction route, and release type of total H-3 in HTR-10 were analyzed and discussed in this technical note. A theoretical model was established to calculate the total activity of H-3 in the reactor core and activity concentration of H-3 in the primary loop of HTR-10. This model indicated that the majority of total H-3 was produced by ternary fission reactions and H-3 in the primary helium was mainly generated from activation reactions of impurities in the reactor core. The research results can provide useful information for the experimental measurement of H-3 in HTR-10, and promote the study of H-3 in high temperature gas-cooled reactors (HTGRs).