Development of the best-estimate system transient analysis code, SSC-K, for pool-type liquid metal reactors

The SSC-K code is a best-estimate system analysis code for the analyses of steady-state conditions and transients in pool type liquid metal reactors. It is developed on the basis of the SSC-L originally developed at BNL to analyze loop-type liquid metal reactor transients. Because of operational characteristic difference between the pool and loop designs, the major modifications of SSC-L have been made for the safety analysis of KALIMER. The code uses a one-dimensional representation of single-phase flow that solves conservation equations for mass, energy, and momentum for liquid phase. The paper will focus on the modeling descriptions and logical verification results to illustrate the simulation capabilities for pool-type liquid metal reactor transients. The paper also describes some of capabilities on a post-processor developed to effectively analyze SSC-K simulation results