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The Advanced Thermal Hydraulic Research Laboratory (ATHRL) is dedicated to investigating fundamental properties in multi-phase fluid flow and heat transfer. It currently houses the Multi-Application Small Light Water Reactor (MASLWR).
ATHRL Test Capabilities
• Meets NQA-1 and NQA-2 quality assurance for certification testing
• Meets 10 CFR 50 Appendix B quality assurance for instrumentation calibration
• Advanced analytical capability for 3-D fluid flow and heat transfer computer code
• Multi-phase fluid flow and heat transfer measurements for process diagnostics
• Integral system two-phase flow experiments
The Multi-Application Light Water Reactor (MASLWR) is a nuclear power plant test facility that is instrumental in the development of next generation commercial nuclear reactors currently seeking NRC certification. The Test Facility is constructed of all stainless steel components and is capable of operation at full system pressure (1500 psia), and full system temperature (600°F).
All components are 1/3 scale height and 1/254.7 volume scale. The current testing program is examining methods for natural circulation startup, helical steam generator heat transfer
performance, and a wide range of design basis, and beyond design basis, accident conditions. In addition, the MASLWR Test Facility is currently the focus of an international collaborative
standard problem exploring the operation and safety of advanced natural circulations reactor concepts. Over 7 international organizations are involved in this standard problem at OSU.