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A Virtual Reality Framework to Optimize Design, Operation and Refueling of GEN-IV Reactors.

Description: many GEN-IV candidate designs are currently under investigation. Technical issues related to material, safety and economics are being addressed at research laboratories, industry and in academia. After safety, economic feasibility is likely to be the most important crterion in the success of GEN-IV design(s). Lessons learned from the designers and operators of GEN-II (and GEN-III) reactors must play a vital role in achieving both safety and economic feasibility goals.
Date: April 23, 2008
Creator: Rizwan-uddin; Karancevic, Nick; Markidis, Stefano; Dixon, Joel; Luo, Cheng & Reynolds, Jared
Partner: UNT Libraries Government Documents Department


Description: In the early production of reactor cores, a final nondestructive method to insure proper loading of fuel-poison subassemblies was desired. Subsequent analytical studies are presented which indicate that two-region reactivity measurements, as obtained from a suitable critical facility, should determine subassembly loading to within 2g U and 0.03g B. Increased confidence in fuel component assembly methods resulted in a decision to abandon use of this method and, as a result, it has never been put into practice at the Bettis Laboratory. (auth)
Date: November 1, 1959
Creator: Case, J.C.
Partner: UNT Libraries Government Documents Department

Recent high-speed ballistics experiments at ORNL

Description: Oak Ridge National Laboratory (ORNL) has been developing pellet injectors for plasma fueling experiments on magnetic confinement devices for almost 20 years. With these devices, pellets (1 to 8 mm in diameter) composed of hydrogen isotopes are formed (at temperatures <20 K) and typically accelerated to speeds of {approximately} 1.0 to 2.0 km/s for injection into plasmas of experimental fusion devices. A variety of pellet injector designs have been developed at ORNL, including repeating pneumatic injectors (single- and multiple-barrel light gas guns) that can inject up to hundreds of pellets for long-pulse plasma operation. The repeating pneumatic injectors are of particular importance because long-pulse fueling is required for present large experimental fusion devices, with steady-state operation the objective for future fusion reactors. In this paper, recent advancements in the development of repeating pneumatic injectors are described, including (1) a small-bore (1.8-mm), high-firing-rate (10-Hz) version of a single-stage light gas gun; (2) a repeating single-stage light gas gun for 8-mm-diam tritium pellets; (3) a repeating two-stage light gas gun for operation at higher pellet velocities; and (4) a steady-state hydrogen extruder feed system.
Date: December 31, 1994
Creator: Combs, S.K.; Gouge, M.J.; Baylor, L.R.; Fisher, P.W.; Foster, C.A.; Foust, C.R. et al.
Partner: UNT Libraries Government Documents Department

Development of innovative fuelling systems for fusion energy science

Description: The development of innovative fueling systems in support of magnetic fusion energy, particularly the International Thermonuclear Experimental Reactor (ITER), is described. The ITER fuelling system will use a combination of deuterium-tritium (D-T) gas puffing and pellet injection to achieve and maintain ignited plasmas. This combination will provide a flexible fuelling source with D-T pellets penetrating beyond the separatrix to sustain the ignited fusion plasma and with deuterium-rich gas fuelling the edge region to meet divertor requirements in a process called isotopic fuelling. More advanced systems with potential for deeper penetration, such as multistage pellet guns and compact toroid injection, are also described.
Date: September 1996
Creator: Gouge, M. J.; Baylor, L. R.; Combs, S. K. & Fisher, P. W.
Partner: UNT Libraries Government Documents Department