Thermal-hydraulic analysis of plant dynamics test (II) SSC-L input manual for PLANDTL

Hayakawa, Hiroki*; Haraguchi, Tetsuharu*; Tanigawa, Shingo*

In the studies using PLANDTL, it would be planned to conduct the LOPI simulation experiment, the plant-wide natural circulation experiment, the DHX operational transient experiment, and so on. The goal of these R&D is to establish an assessment method for plant dynamics and to propose some design considerations on core conditions for the achievement of inherent safety features, passive decay heat removal capability. SSC-L (Super System Code - Loop Version) is to be as the main code in these studies and is used for the PLANDTL design analysis through test analysis. SSC-L is the most advantageous computational tool because the code is designed to analyze various kinds of transients and has been widely used for the safety analysis of LMFBR. In the first step of the plant dynamics tests, model development and modification of SSC-L has been achieved, and new models for PLANDTL are installed because the PLANDTL has the unique system and components to simulate LOPI conditions. After the modification and the experience of SSC-L application, we have made the input manual to conduct timely the pre- or post-analysis for the plant dynamics tests. The present document consists of the items corresponding to the various test conditions in order to quickly generate the input data.