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Colin Judge: Testing structural materials in Idaho’s newest hot cell facility
Idaho National Laboratory’s newest facility—the Sample Preparation Laboratory (SPL)—sits across the road from the Hot Fuel Examination Facility (HFEF), which started operating in 1975. SPL will host the first new hot cells at INL’s Materials and Fuels Complex (MFC) in 50 years, giving INL researchers and partners new flexibility to test the structural properties of irradiated materials fresh from the Advanced Test Reactor (ATR) or from a partner’s facility.
Materials meant to withstand extreme conditions in fission or fusion power plants must be tested under similar conditions and pushed past their breaking points so performance and limitations can be understood and improved. Once irradiated, materials samples can be cut down to size in SPL and packaged for testing in other facilities at INL or other national laboratories, commercial labs, or universities. But they can also be subjected to extreme thermal or corrosive conditions and mechanical testing right in SPL, explains Colin Judge, who, as INL’s division director for nuclear materials performance, oversees SPL and other facilities at the MFC.
SPL won’t go “hot” until January 2026, but Judge spoke with NN staff writer Susan Gallier about its capabilities as his team was moving instruments into the new facility.
Donald R. Olander, Grant T. Fukuda, C. F. Baes, Jr.
Fusion Science and Technology | Volume 41 | Number 2 | March 2002 | Pages 141-150
Technical Paper | doi.org/10.13182/FST02-A208
Articles are hosted by Taylor and Francis Online.
The pressures of the vapor species in equilibrium with Flibe at ~600°C are determined from work by Buchler and Stauffer and by Baes and coworkers. The former authors show that the principal vapor species are BeF2(g) and LiBeF3(g). The measurements and the theoretical model of Baes provide accurate values of the activity coefficient of BeF2 in Flibe. When combined with the vapor pressure of pure BeF2, the equilibrium pressure of BeF2 is determined as a function of melt composition and temperature. The activity coefficient of LiF is not measured, but it is obtained by application of the Gibbs-Duhem equation to the measured activity coefficient of BeF2. Thus, the partial pressure of LiF(g) is also known. The pressure of the mixed dimer LiBeF3 is calculated from the gas phase equilibrium for the formation of the dimer from the two monomers, with the equilibrium constant given by Buchler and Stauffer. The vapor pressure at 600°C extrapolated from high-temperature Oak Ridge National Laboratory data is ~60% higher than the predicted values.
