Conceptual Design on Secondary System of Integral Effect Test Loop for Pressurized Water Reactor

Standard nuclear power plants under studying in Korea should verify the safety and performance of the systems and components. For this purpose, integral effect tests including all systems in power plant are being conducted, including the separate effect tests, which are a component or a system-based tests. In the case of the IET, the primary system including the reactor, the secondary system including the turbine, the various safety systems, and various auxiliary systems are scaled down for ease of testing. The secondary system for the actual electricity production is based on the thermodynamic basis of the power generation cycle (Rankin cycle), and IET is designed to fulfill the boundary conditions of the primary system without consisting the power generation cycle. This secondary system for IET is largely divided into open-system type and closed-system type. In this paper, the design process for the open-system type, which is the secondary system of commonly used in IET for the pressurized water reactor, is described in detail by dividing into design overview, design requirements, main functions, and technical specifications.