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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
Meeting Spotlight
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Can hydrogen be the transportation fuel in an otherwise nuclear economy?
Let’s face it: The global economy should be powered primarily by nuclear power. And it probably will by the end of this century, with a still-significant assist from renewables and hydro. Once nuclear systems are dominant, the costs come down to where gas is now; and when carbon emissions are reduced to a small portion of their present state, it will become obvious that most other sources are only good in niche settings. I mean, why use small modular reactors to load-follow when they can just produce that power instead of buffering it?
Sang Ji Kim, Yonghee Kim, Sergi Hong, Chung Ho Cho, Jae-Hyuk Eoh, Jong Bum Kim, Myung Hwan Wi, Kwi Seok Ha, Eui Kwang Kim
Nuclear Technology | Volume 170 | Number 1 | April 2010 | Pages 148-158
Technical Paper | Special Issue on the 2008 International Congress on Advances in Nuclear Power Plants / Fission Reactors | doi.org/10.13182/NT10-A9453
Articles are hosted by Taylor and Francis Online.
The conceptual design of a 900-MW(thermal) lead-cooled fast reactor (LFR) system for transuranic element (TRU) burning is developed and analyzed using TRU-U-Zr metallic alloy fuel. The design and analysis areas covered are neutronics design, thermal-hydraulic analysis, thermal system design, system mechanical design and analysis, system arrangement, passive decay heat removal system evaluation, and safety analysis for anticipated transient without scram (ATWS) events. Design challenges, solutions, and further research and development items during the conceptual design are described in this paper. Large burnup reactivity swing inherent in the transmutation reactor and irradiation damage to the cladding by high fast neutron fluence are overcome by filling in boron carbide within the tie rods with axial cutbacks. The lead coolant in the reactor pool was estimated to lead to a maximum stress of 125 MPa in the containment vessel. For the long-term cooling behavior upon the concurrent occurrences of a loss of heat sink and a loss of flow, the hot pool temperature is maintained below the design limit of 650°C, which is achieved by an improved decay heat removal design with heat transfer enhancement mechanisms. Analyses of the ATWSs in the investigated core do not reveal any problem from the viewpoints of fuel temperature, cladding temperature, and hot pool temperature. In conclusion, the 900-MW(thermal) LFR system in this study does not pose any significant design-related concerns except for a marginal seismic loading due to the large coolant mass and a verification of the newly introduced design resolutions for long-term decay heat removal.