OPTIMASI UKURAN TERAS DAN DAYA TERMAL TERHADAP TINGKAT SIRKULASI ALAMIAH BAHAN PENDINGIN Pb-Bi PADA REAKTOR CEPAT

Authors

  • Sri Oktamuliani Jurusan Fisika Universitas Andalas, Indonesia
  • Dian Fitriyani Jurusan Fisika Universitas Andalas, Indonesia

DOI:

https://doi.org/10.25077/jif.4.2.53-61.2012

Abstract

Telah dilakukan analisis pengaruh ukuran teras geometri kubus terhadap tingkat sirkulasi alamiah bahan pendingin Pb-Bi pada reaktor cepat LMFBR dengan bahan bakar UN-PuN dan laju aliran massa pendingin total 4000 kg/s menggunakan program simulasi komputasi DTRIDI. Simulasi diawali oleh perhitungan neutronik yang memberikan hasil harga multiplikasi neutron dan fluks neutron yang dapat digunakan untuk perhitungan termal-hidrolik sehingga diketahui distribusi temperatur pada elemen bahan bakar dan pendingin. Tingkat sirkulasi alamiah dilakukan dengan pendekatan kuasistatik dari grafik yang ditunjukkan oleh perpotongan antara presure drop dan driving head sebagai fungsi dari laju alir total pendingin. Pada kondisi tersebut, adanya pengurangan daya pompa yang digunakan. Tingkat sirkulasi alamiah berdasarkan optimasi ukuran teras dan daya termal tercapai pada ukuran geometri teras yang lebih kecil dengan daya yang lebih besar. Tingkat sirkulasi alamiah pada daya 150 MWth tercapai pada ukuran geometri teras yang lebih kecil yaitu 50 cm bervolume 125 liter sebesar 12,5%. Sedangkan untuk reaktor dengan ukuran teras 80 cm tidak menunjukkan tingkat sirkulasi alamiah yang berarti reaktor dalam keadaan bahaya jika terjadi kecelakaan ULOF yaitu kecelakaan akibat hilangnya daya pompa.

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Published

2012-09-15

How to Cite

Oktamuliani, S., & Fitriyani, D. (2012). OPTIMASI UKURAN TERAS DAN DAYA TERMAL TERHADAP TINGKAT SIRKULASI ALAMIAH BAHAN PENDINGIN Pb-Bi PADA REAKTOR CEPAT. JURNAL ILMU FISIKA, 4(2), 53–61. https://doi.org/10.25077/jif.4.2.53-61.2012

Issue

Vol. 4 No. 2 (2012): September 2012

Section

Riset Artikel

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