Optimasi Ukuran Teras Reaktor Cepat Berpendingin Gas dengan Uranium Alam sebagai Bahan Bakar

Authors

  • Dora Andris Jurusan Fisika Universitas Andalas
  • Dian Fitriyani Jurusan Fisika Universitas Andalas
  • Feriska Handayani Irka Jurusan Fisika Universitas Andalas

DOI:

https://doi.org/10.25077/jfu.5.1.21-27.2016

Abstract

Optimasi ukuran teras reaktor cepat berpendingin gas dengan uranium alam sebagai bahan bakar telah dilakukan. Optimasi ukuran teras dilakukan untuk model teras silinder dua dimensi R-Z pada volume 8 m3, 14 m3 dan 20 m3. Setiap volume dibuat lima model ukuran teras dengan menvariasikan tinggi dan diameter teras. Diameter teras untuk setiap model ukuran teras dibagi menjadi 10 region. Perhitungan dilakukan dengan simulasi komputasi dengan program SRAC. Reaktor ini menggunakan strategi shuffling arah radial agar reaktor dapat beroperasi dengan bahan bakar uranium alam. Setelah 10 tahun periode burn up, bahan bakar di-shuffling secara radial dari region 1 ke region 2, region 2 ke region 3, begitu seterusnya sampai bahan bakar di region 9 di-shuffling ke region 10 sehingga bahan bakar region 10 dikeluarkan dari teras reaktor dan bahan bakar baru ditempatkan di region 1. Hasil perhitungan menunjukkan bahwa untuk teras dengan volume 8 m3 dan 14 m3 diperoleh nilai keff  antara 0,95 sampai 1,05 (reaktor berada dalam keadaan kritis) dan untuk volume 20 m3 keff ˃ 1,05 (keadaan superkritis) dengan ayunan reaktivitas ±0,05. Teras dengan model paling pipih pada volume 8 m3 merupakan model yang direkomendasikan untuk desain reaktor karena menghasilkan kinerja neutronik reaktor yang optimal dibandingkan model lain.

Kata kunci: ukuran teras reaktor, uranium alam, SRAC, strategi shuffling

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Published

2016-01-01

Issue

Vol. 5 No. 1 (2016)

Section

Articles

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Copyright (c) 2016 Dora Andris, Dian Fitriyani, Feriska Handayani Irka

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