Loading pattern optimization of a PWR reactor fuel assemblies using PESA-II algorithm by considering neutronic and thermal-hydraulic parameters

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Gharari R.; Salmasian B.; Safarzadeh O.

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Journal Paper

Paper Information

Journal: JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY Year:2021 | Volume:41 | Issue:4 (94) Page(s): 138-145

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Information Journal Paper

Title

Loading pattern optimization of a PWR reactor fuel assemblies using PESA-II algorithm by considering neutronic and thermal-hydraulic parameters

Author(s)

Gharari R. | Salmasian B. | Safarzadeh O. | Issue Writer Certificate

Keywords

PESA-II algorithmQ1

Arrangement of fuel assembliesQ1

Loss of coolant flowQ1

Nodal expansion and COBRA-EN codesQ1

Abstract

The multi-objective optimization methods are widely used in various areas of science and engineering. In this paper, a multi-objective optimization algorithm has been used to design the optimal placement of fuel assemblies in the KWU reactor with the purposes of power flattening and increasing the multiplication factor. Also, thermal-hydraulic analysis has been performed to investigate the new arrangement during a hypothetical loss of coolant accident. For this purpose, the PESA-II algorithm is coupled with Nodal expansion code (for neutronic calculations) and COBRA-EN code (for thermalhydraulic calculations). The results showed that the neutronic parameters including power flattening and the multiplication factor (increases from 1. 0047 to 1. 0058) improved by optimizing the fuel assemblies’ placement. It was also investigated that during a hypothetical loss of coolant accident up to 15%, the reactor could continue to operate in the safe mode. In addition, the results have emphasized the better performance of the PESA-II algorithm than the SPEA algorithm.

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APA: Copy

Gharari, R., Salmasian, B., & Safarzadeh, O.. (2021). Loading pattern optimization of a PWR reactor fuel assemblies using PESA-II algorithm by considering neutronic and thermal-hydraulic parameters. JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, 41(4 (94) ), 138-145. SID. https://sid.ir/paper/409503/en

Vancouver: Copy

Gharari R., Salmasian B., Safarzadeh O.. Loading pattern optimization of a PWR reactor fuel assemblies using PESA-II algorithm by considering neutronic and thermal-hydraulic parameters. JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY[Internet]. 2021;41(4 (94) ):138-145. Available from: https://sid.ir/paper/409503/en

IEEE: Copy

R. Gharari, B. Salmasian, and O. Safarzadeh, “Loading pattern optimization of a PWR reactor fuel assemblies using PESA-II algorithm by considering neutronic and thermal-hydraulic parameters,” JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, vol. 41, no. 4 (94) , pp. 138–145, 2021, [Online]. Available: https://sid.ir/paper/409503/en

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