Joint SAS4A/SASSYS-1 Development for Lead Cooled Fast Reactor Safety Analysis

Qualification of System-Level Advanced Reactor Safety Analysis Software for Lead Systems: Final CRADA Report

“…In addition to translating, the intermediate coupling software, Sas2Goth, controls the time step synchronization between SAS4A/SASSYS-1 and GOTHIC and creates a detailed log file of the information exchanged. This capability has been demonstrated in [17], where the transition from evaporation to air cooling within a PHRS was observed during a coupled SAS4A/SASSYS-1/GOTHIC simulation. way to perform MST analysis is to use the predictions of a safety analysis calculation to inform a string of calculations capturing the isotopic transport from a fuel pin to containment.…”

“…However, the detailed RVACS model does not provide users the flexibility to simulate RVACS geometries that vary from the standardized configuration prevalent in most pool-type liquid metal-cooled reactor designs. For example, the PHRS, which relies on the evaporation of water and subsequent natural convection of air, cannot be accurately modeled using the detailed RVACS model [17]. For this reason, a new coupled RVACS model was developed to allow users increased flexibility when modeling the heat transfer contributions of an RVACS.…”