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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.
Kevin W. Brinckman, Mark A. Chaiko
Nuclear Technology | Volume 133 | Number 1 | January 2001 | Pages 133-139
Technical Note | Thermal Hydraulics | doi.org/10.13182/NT01-A3164
Articles are hosted by Taylor and Francis Online.
The TRAC-BF1 computer code is used to analyze the fluid pressure response for a waterhammer event in a water-filled pipe with entrapped air. TRAC's capabilities are assessed by comparison against a method-of-characteristics (MOC) solution of pressure-wave propagation in a gas/liquid interface system. A vertically oriented pipe with air initially occupying up to 10% of the pipe volume is considered. A step increase in pressure is imposed at the inlet, and the fluid pressure response in the pipe is calculated. TRAC correctly predicts that the peak pressure with entrapped air is substantially higher than it would be in a purely liquid system. For an initial air volume equal to 10% of the pipe volume, the peak pressure calculated by TRAC compares within 1% of the MOC result. For smaller initial air volumes, TRAC underpredicts the peak pressure disturbance by up to 14% compared to the MOC. The TRAC solution exhibits a degree of long-term artificial damping, but in all cases it captures the basic features of the pressure response for a waterhammer event in a system with entrapped air.
