Eutronic Parameter Analysis of Plate-Type Fueled TRIGA 2000 Reactor by MCNPX

Nuryana A, Nuryana A and Mahmudah R.S.N., Mahmudah R.S.N. and Khakim A, Khakim A (2023) Eutronic Parameter Analysis of Plate-Type Fueled TRIGA 2000 Reactor by MCNPX. Atom Indonesia, 49 (2). pp. 77-88. ISSN 23565322

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Abstract

A novel simulation to calculate the neutronic parameters of the TRIGA 2000 reactor using plate-type fuel has been performed. The plate fuel used was produced by the Indonesian Nuclear Industry (PT INUKI) with U3Si2-Al material. Neutronic parameters based on INUKI’s plate-type fuel dimension and the current TRIGA’s configuration were simulated using MCNPX. The simulation was performed by modeling the complete reactor’s configuration on a fresh fuel core state. We obtained the kinetic parameter values from the simulation, i.e., delayed neutron fraction of 8.11×10-3, a prompt neutron lifetime of 2.0551×10-4 s, and an average neutron generation time of 1.87×10-4 s. The excess reactivity of the reactor was 9.02 %Δk/k, while reactivity in the one-stuck-rod state was below -0.5 $ with an average value of -3.40 %Δk/k (-4.19 $). The average thermal neutron flux peak occurred at the central irradiation position with the value of 3.0×1013 to 3.1×1013 n/(cm2 s). The reactor has a power peaking factor of 1.379 in the control rod position of 0 % on D3 fuel. The reactor had a negative feedback reactivity coefficient, except for the moderator coefficient. These results suggest that the current configuration of plate-type fuel met the nuclear reactor neutronic safety standards.

Item Type: Article
Uncontrolled Keywords: Kinetic parameter; MCNPX; Neutronic parameter; Plate-type fuel; TRIGA 2000
Subjects: Q Science > QC Physics
Divisions: Faculty of Mathematics and Natural Sciences > Physics Department
Depositing User: Ismu WIDARTO
Date Deposited: 23 Sep 2024 02:49
Last Modified: 23 Sep 2024 02:49
URI: https://ir.lib.ugm.ac.id/id/eprint/7402

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