A sensitivity study on the PDFs treating uncertainties in severe accidents for pressurized heavy water reactors

被引：0
作者：
Nistor-Vlad, Roxana-Mihaela [1 ]
Dupleac, Daniel [1 ]
Budu-Stanila, Andrei-Razvan [1 ]
机构：
[1] Natl Univ Sci & Technol POLITEHN Bucharest, Fac Power Engn, Dept Power Prod & Usage, Nucl Engn Div, Splaiul Independentei 313, Bucharest 060042, Romania
来源：
NUCLEAR ENGINEERING AND TECHNOLOGY | 2024年 / 56卷 / 10期
关键词：
Pressurized heavy water reactors; CANDU; Uncertainty; Probability; Severe accident;
D O I：
10.1016/j.net.2024.05.033
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
This research article introduces a study regarding the uncertainties treatment during severe accidents for Pressurized Heavy Water Reactors (PHWRs). The present study is focused upon the unmitigated Station BlackOut (SBO) accident analysis for a CANada Deuterium Uranium (CANDU) type reactor emphasizing the impact of the uncertainties treatment on the relevant key timings of the SBO accident progression through different approaches for the uncertainty parameters' Probabilistic Distribution Functions (PDFs). A comparison between the sensitivity analysis results is provided in the present research study. The uncertainty analysis is performed with the RELAP/SCDAPSIM code with the Integrated Uncertainty Analysis (IUA) package from the code. Results from the research would support the advancements on the best-practices for uncertainty analyses with respect to the parameter's uncertainties distribution functions. Data dispersion is a key element for the realistic quantification of uncertainties in nuclear power plant safety analyses, including severe accidents.
引用
收藏
页码：4280 / 4288
页数：9
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