System transient analysis code for advanced liquid metal reactor

The SSC-K code has beem used as the principal tool for analyzing a variety of off-normal conditions or accidents in the preliminary KALIMER design. The SSC-K code feasures a multiple-channel core representation coupled with a point kinetics model with reactivity feedback. It privides a detailed, one-dimensional thermal-hydrualic simulation of the primary and secondary sodium circuits, as well as a balance-of-plant steam/water circuit. The SSC-K contains detailed medels for a passive decay heat removal system and a generalized plant control system. Particularly, a two-dimensional hot pool model is incorporated into SSC-K for analysis of thermal stratification phenomena in the hot pool. A long-term cooling method is developed as a stand-alone model and it will be included in the SSC-K. This paper presents an overview of recent activities concerned with the SSC-K code model development, and focuses on descriptions of the newly adopted thermal hydraulic and neutronic models