![]() Therefore it can be concluded, that proposed IJS conversion procedure was successfully demonstrated on the BETHSY integral test facility input model. The overall calculated results obtained with TRACE using the converted RELAP 5 model were close to experimental data and comparable to RELAP 5/MOD3.3 calculations. The application of the IJS procedure for conversion of BETHSY input model showed that it is important to perform the steps in proper sequence. The selected BETHSY 6.2TC test was 15.24 cm equivalent diameter horizontal cold leg break in the reference pressurized water reactor without high pressure and low pressure safety injection. For calculations of the selected BETHSY 6.2TC test the RELAP 5/MOD3.3 Patch 4 and TRACE V 5.0more » Patch 1 were used. The IJS conversion procedure consists of eleven steps and is based on the use of SNAP. The purpose of this study is to demonstrate the Institut 'Josef Stefan' (IJS) conversion procedure from RELAP 5 to TRACE input model of BETHSY facility. Much of efforts have been done in the past to develop the RELAP 5 input decks. Nuclear Regulatory Commission comes with a graphical user interface called Symbolic Nuclear Analysis Package (SNAP). The TRAC/ RELAP Advanced Computational Engine (TRACE) advanced, best-estimate reactor systems code developed by the U.S. ![]() IJS procedure for RELAP 5 to TRACE input model conversion using SNAP
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