Scaling Studies for High Temperature Test Facility and Modular High Temperature Gas-Cooled Reactor.

摘要

The Oregon State University (OSU) High Temperature Test Facility (HTTF) is an integral experimental facility that will be constructed on the OSU campus in Corvallis, Oregon. The HTTF project was initiated, by the U.S. Nuclear Regulatory Commission (NRC), on September 5, 2008 as Task 4 of the 5-year High Temperature Gas Reactor Cooperative Agreement via NRC Contract 04-08-138. Until August, 2010, when a DOE contract was initiated to fund additional capabilities for the HTTF project, all of the funding support for the HTTF was provided by the NRC via their cooperative agreement. The U.S. Department of Energy (DOE) began their involvement with the HTTF project in late 2009 via the Next Generation Nuclear Plant (NGNP) project. Because the NRCs interests in HTTF experiments were only centered on the depressurized conduction cooldown (DCC) scenario, NGNP involvement focused on expanding the experimental envelope of the HTTF to include steady-state operations and also the pressurized conduction cooldown (PCC) scenario. Since DOE has included the HTTF as an ingredient in the NGNP thermal-fluids validation program, several important outcomes should be noted: (a) The reference prismatic reactor design that serves as the basis for scaling the HTTF, became the modular high temperature gas-cooled reactor (MHTGR) (b) To enable the HTTF to operate at more representative steady-state conditions, i.e. with turbulent flow conditions in the core, DOE contributed the resources necessary to allow operation at a steady-state power of 2.2 MW. Consequently the HTTF may operate at steady-state conditions that are more representative of the MHTGR than it could with its initial design components.