Using TRACE and FRAPTRAN Codes to Simulate and Analyze the Severe Accident and Ultimate Response Guideline of Maanshan Nuclear Power Plant

摘要

In this research, we use TRACE and FRAPTRAN tosimulate and analyze that whether the Maanshan nuclearpower plant can be restored to a safety state whenoccurred the SBO (Station Black Out) and LOCA(Loss OfCoolant Accident) accident at the same time by carryingout the URG(Ultimate Response Guideline) with theassistant of FLEX. Besides, FRAPTRAN is the primarycode to analyze the integrity of fuel rod and cladding atdifferent mass flow and timing of water injection. Inaddition, the results of TRACE are as the input ofFRAPTRAN. The analysis show that even if the Maanshannuclear power plant occurred the extreme accident likethe occurrence of SBO and LOCA simultaneously, thewater level and peak cladding temperature could recoverto a normal state by taking the URG at right moment andsufficient mass flow of water injection to primary side.Therefore, the nuclear power plant and human life are ina safety situation.