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http://dx.doi.org/10.1016/j.net.2016.03.008

Simulation of Containment Pressurization in a Large Break-Loss of Coolant Accident Using Single-Cell and Multicell Models and CONTAIN Code  

Noori-Kalkhoran, Omid (Reactor Research School, Nuclear Science and Technology Research Institute)
Shirani, Amir Saied (Faculty of Engineering, Shahid Beheshti University)
Ahangari, Rohollah (Reactor Research School, Nuclear Science and Technology Research Institute)
Publication Information
Nuclear Engineering and Technology / v.48, no.5, 2016 , pp. 1140-1153 More about this Journal
Abstract
Since the inception of nuclear power as a commercial energy source, safety has been recognized as a prime consideration in the design, construction, operation, maintenance, and decommissioning of nuclear power plants. The release of radioactivity to the environment requires the failure of multiple safety systems and the breach of three physical barriers: fuel cladding, the reactor cooling system, and containment. In this study, nuclear reactor containment pressurization has been modeled in a large break-loss of coolant accident (LB-LOCA) by programming single-cell and multicell models in MATLAB. First, containment has been considered as a control volume (single-cell model). In addition, spray operation has been added to this model. In the second step, the single-cell model has been developed into a multicell model to consider the effects of the nodalization and spatial location of cells in the containment pressurization in comparison with the single-cell model. In the third step, the accident has been simulated using the CONTAIN 2.0 code. Finally, Bushehr nuclear power plant (BNPP) containment has been considered as a case study. The results of BNPP containment pressurization due to LB-LOCA have been compared between models, final safety analysis report, and CONTAIN code's results.
Keywords
CONTAIN Code; Containment Pressurization; Multicell Model; Single-Cell Model; Spray Operation;
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