Application of RFSP-IST Determined Trip Delay Time to Wolsong-1 Loss of Regulation Simulations

Abstract

The trip delay time that is determined by using RFSP-IST is applied to the Loss of Regulation (LOR) simulations of Wolsong-1, which is scheduled to undergo a major refurbishment project. The safety analyses required for licensing after refurbishment are currently being carried out using the update-to-date Canadian Industry Standard Toolset code suite. Since the POINTSIM program used in the past to calculate trip delay time is not included in IST, the RFSP-IST code is being mandatorily used in place of the POINTSIM functions. The CATHENA LOR simulation results obtained based upon the RFSP-IST determined trip delay times clearly justify the use of procedures that are developed to run *CERBERUS, *INTREP and *TRIP_TIME modules in the context of determining trip delay time.