[3B09-13] Light Water Reactor Safety Assessment

[3B09] Development of Reduced Order Model of Severe Accident Analysis Code for Probabilistic Safety Margin Analysis

*Masaki Matsushita¹, Tomohiro Endo¹, Akio Yamamoto¹, Takumi Kitao² (1. Nagoya University, 2. Nuclear Engineering Ltd.)

Keywords:reduced order model, singular value decomposition, severe accident analysis, Modular Accident Analysis program

For probabilistic safety margin analysis, we developed a reduced order model (ROM) that reconstruct calculation results of typical severe accident progressions obtained by the severe accident analysis code, MAAP. The ROM is applied to severe accident scenarios, e.g., the station black out (SBO) with loss of all feed water capabilities.