[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.14248/JKOSSE.2019.15.1.051

A Systems Engineering Approach for Uncertainty Analysis of a Station Blackout Scenario

de Sousa, J. Ricardo Tavares (Department of NPP Engineering, KEPCO International Nuclear Graduate School)
Diab, Aya (Department of NPP Engineering, KEPCO International Nuclear Graduate School)

Publication Information

Journal of the Korean Society of Systems Engineering / v.15, no.1, 2019 , pp. 51-59 More about this Journal

Abstract

After Fukushima Dai-ichi NPP accident, the need for implementation of diverse and flexible coping strategies (FLEX) became evident. However, to ensure the effectiveness of the safety strategy, it is essential to quantify the uncertainties associated with the station blackout (SBO) scenario as well as the operator actions. In this paper, a systems engineering approach for uncertainty analysis (UA) of a SBO scenario in advanced pressurized water reactor is performed. MARS-KS is used as a best estimate thermal-hydraulic code and is loosely-coupled with Dakota software which is employed to develop the uncertainty quantification framework. Furthermore, the systems engineering approach is adopted to identify the requirements, functions and physical architecture, and to develop the verification and validation plan. For the preliminary analysis, 13 uncertainty parameters are propagated through the model to evaluate the stability and convergence of the framework. The developed framework will ultimately be used to quantify the aleatory and epistemic uncertainties associated with an extended SBO accident scenario and assess the coping capability of APR1400 and the effectiveness of the implemented FLEX strategies.

Keywords

Systems Engineering; APR1400; Uncertainty Analysis; Safety Analysis;

Citations & Related Records

Times Cited By KSCI : 2 (Citation Analysis)

Reference
Cited By KSCI

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