Development and assessment of the appendix K version of RELAP5-3D for LOCA licensing analysis

摘要

In light water reactors, particularly the pressurized water reactor (PWR), the severity of a loss-of-coolant accident (LOCA) would limit how high the reactor power can operate. Although the best-estimate LOCA licensing methodology can provide the greatest margin on the peak cladding temperature (PCT) evaluation during a LOCA, it generally takes much more resources to develop. In- stead, implementation of evaluation models required by Appendix K of 10CFR50 on an advanced thermal- Hydraulic platform such as RELAP5, TRAC, etc., also Can gain significant margin for the PCT calculation.