Performance analysis of automatic depressurization system in advanced PWR during a typical SBLOCA transient using MIDAC

Hongping Sun; Yapei Zhang; Wenxi Tian; Suizheng Qiu; Guanghui Su

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자료유형: 학술저널

저자정보: Hongping Sun Yapei Zhang Wenxi Tian Suizheng Qiu Guanghui Su

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제52권 제5호

발행연도: 2020.1

수록면: 937 - 946 (10page)

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The aim in the present work is to simulate accident scenarios of AP1000 during the small-break loss-ofcoolantaccident (SBLOCA) and investigate the performance and behavior of automatic depressurizationsystem (ADS) during accidents by using MIDAC (The Module In-vessel Degradation severe accidentAnalysis Code). Four types of accidents with different hypothetical conditions were analyzed in thisstudy. The impact on the thermal-hydraulic of the reactor coolant system (RCS), the passive core coolingsystem and core degradation was researched by comparing these types. The results show that the RCSdepressurization becomes faster, the core makeup tanks (CMT) and accumulators (ACC) are activatedearlier and the effect of gravity water injection is more obvious along with more ADS valves open. Theopen of the only ADS1-3 can't stop the core degradation on the basis of the first type of the accident. Theopen of ADS1-3 has a great impact on the injection time of ACC and CMT. The core can remain intact for along time and the core degradation can be prevent by the open of ADS-4. The all results are significantand meaningful to understand the performance and behavior of the ADS during the typical SBLOCA.

참고문헌 (18)

참고문헌 신청

Longze Li / 2014 / MAAP5 simulation of the PWR severe accident induced by pressurizer safety valve stuck-open accident / Prog. Nucl. Energy 77:141~151

T. L. Schulz / 2006 / Westinghouse AP1000 advanced passive plant / Nucl. Eng. Des 236:1547~1557

W. W. Wang / 2013 / Analyses of liquid entrainment through ADS-4 in AP1000 during a typical small break LOCA transient / Ann. Nucl. Energy 60:195~201

Zhaoming Meng / 2014 / Experimental research of liquid entrainment through ADS-4 in AP1000 / Ann. Nucl. Energy 72:428~437

A. K. Trivedi / 2016 / AP1000 station blackout study with and without depressurization using RELAP5/SCDAPSIM / Nucl. Eng. Des 307:299~308

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