Comparative Analysis of Hexagonal and Square Fuel Pin Geometry Designs of GFR using Uranium Carbide Fuel

Muhammad Rizqi  Maulana; Ratna Dewi Syarifah; Fajri Prasetya; Ahmad Muzaki Mabruri; Artoto  Arkundato; Lutfi Rohman

doi:10.23960/jemit.v5i3.252

Authors

Muhammad Rizqi Maulana Department of Physics, University of Jember
Ratna Dewi Syarifah Department of Physics, University of Jember https://orcid.org/0000-0001-9110-2093
Fajri Prasetya Department of Nuclear Science and Engineering, Bandung Institute of Technology https://orcid.org/0009-0000-1760-4474
Ahmad Muzaki Mabruri Department of Nuclear Science and Engineering, Bandung Institute of Technology https://orcid.org/0000-0001-9383-8424
Artoto Arkundato Department of Physics, University of Jember https://orcid.org/0000-0002-4731-6999
Lutfi Rohman Department of Physics, University of Jember https://orcid.org/0000-0002-2357-3333

DOI:

https://doi.org/10.23960/jemit.v5i3.252

Keywords:

GFR, k-eff, pin geometry, power density

Abstract

Comparative Analysis of Hexagonal and Square GFR Fuel Pin Geometry Designs with Uranium Carbide Fuel has been carried out. Nuclear reactors from Generation I to IV have developed significantly, with Gas-cooled Fast Reactors (GFR) being a potential candidate for operation by 2030. This study focuses on a GFR reactor utilizing uranium carbide (UC) fuel with a low input power of 300 MWth. The reactor core adopts a cylindrical pancake geometry with 100 cm height and 240 cm diameter dimensions. The objective is to compare the optimal design between hexagonal and square pin cell geometries for GFR-type fast reactors. The study employs the SRAC 2006 software with the JENDL 4.0 database. The research involves homogenous core configuration calculations, heterogeneous core configuration calculations, and variations in fuel fraction to determine optimal data for hexagonal and square pin cell configurations. Results indicate that heterogeneous fuel configurations require fuel fractions of 51% for hexagonal pins and 59% for square pins, with comparable maximum power performance at End of Life (EOL) and Beginning of Life (BOL). It suggests that hexagonal pins are more efficient, requiring less fuel material to maintain reactor criticality over a 20-period burn-up.

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