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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Fusion Science and Technology
Latest News
PR: American Nuclear Society welcomes Senate confirmation of Ted Garrish as the DOE’s nuclear energy secretary
Washington, D.C. — The American Nuclear Society (ANS) applauds the U.S. Senate's confirmation of Theodore “Ted” Garrish as Assistant Secretary for Nuclear Energy at the U.S. Department of Energy (DOE).
“On behalf of over 11,000 professionals in the fields of nuclear science and technology, the American Nuclear Society congratulates Mr. Garrish on being confirmed by the Senate to once again lead the DOE Office of Nuclear Energy,” said ANS President H.M. "Hash" Hashemian.
Kim Burns, Ed Love, Monte Elmore
Fusion Science and Technology | Volume 71 | Number 4 | May 2017 | Pages 544-548
Technical Paper | doi.org/10.1080/15361055.2017.1291038
Articles are hosted by Taylor and Francis Online.
Currently there are large uncertainties associated with the source of tritium in a Pressurized Water Reactor (PWR) Reactor Coolant System (RCS). The measured amount of tritium in the coolant cannot be separated out empirically into its individual sources. Therefore, all sources of tritium in the RCS of a PWR must be understood theoretically. One potential source of tritium in the RCS is due to tritium production in secondary sources. Neutron sources provide a flux of neutrons that are used to support reactor startup. Primary startup neutron source rods made of 252Cf are inserted into the reactor during the first cycle of a new nuclear reactor. The primary neutron sources are used to produce enough neutrons through spontaneous fission to create a sufficient neutron flux to be seen by the ex-core neutron detectors and facilitate reactor startup. Antimony-Beryllium secondary startup neutron sources are also inserted in the first reactor cycle to provide a neutron source for startups in future cycles. The Beryllium in the secondary sources is a source of tritium when irradiated in a neutron flux. This paper will discuss tritium produced within the secondary sources.