TRACB04 simulation of BWR/4 design-basis accident with LPCI to lower plenum

This paper presents a TRACB04 simulation of a BWR/4 design-basis accident (DBA). The DBA considered is a postulated guillotine break in one suction line, with low-pressure coolant injection (LPCI) into the recirculation drive lines and through the jet pumps into the lower plenum. The TRACB04 code is a best-estimate computer code for the analysis of boiling water reactor (BWR) transients, and is an enhanced version of TRAC. It was developed under the Full Integral Simulation Test (FIST) Program, sponsored by the US Nuclear Regulatory Commission, the Electric Power Research Institute, and the General Electric Company. This simulation was performed to provide best-estimate BWR/4 DBA calculational results, and to assess the TRACB04 overall performance in a system calculation