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ANALISIS NILAI KOEFISIEN REAKTIVITAS SUHU BAHAN BAKAR PADA HTR-10

Radina Qisma Jabar Sasmita1, Suharyana1, Azizul Khakim2

1Prodi Fisika FMIPA, Universitas Sebelas Maret, Surakarta

2Bidang PRND, PPSTPIBN, Badan Pengawas Tenaga Nuklir, Jakarta

e-mail: radinaqisma@gmail.com

ABSTRAK

Telah dilakukan simulasi reaktor jenis HTR-10 menggunakan software MVP. Bahan bakar HTR-10 berupa UO2 yang kemudian dilapisi dengan lapisan triso. Pada penelitian ini dilakukan pengkayaan sebesar 17%. Moderator serta reflektor bermaterial grafit. Acuan dalam pembuatan geometri menggunakan hasil penelitian Terry 2006. Simulasi pada penelitian ini dilakukan variasi suhu pada bahan bakar. Hasil variasi tersebut berupa perubahan nilai keff yang nantinya dapat diperhitungkan perubahan reaktivitas serta nilai koefisien reaktivitas suhu. Penelitian ini menghitung koefisien reaktivitas suhu bahan bakar. Hasil penelitian menunjukkan nilai koefisien reaktivitas suhu bahan bakar bernilai negatif, yaitu sebesar   

Kata kunci : HTR-10, koefisien reaktivitas, bahan bakar

ABSTRACT

simulation of HTR-10 have been performed using code MVP. The purpose of this simulation is to determine the coefficient reactivity of fuel  HTR-10. HTR-10 fuel is UO2 which is layered by TRISO. Enrichment of HTR-10’s fuel is 17 %. Material of moderator and reflector are graphite. Geometry and parameters refer to Terry’s et al (2006) experiment. Variation of this simulation is about temperature variation of fuel. The result of that variation is decrease of keff value. From keff value, and then can be calculated the changes of reactivity value and the the coefficient reactivity of fuel. coefficient reactivity of fuel and moderator HTR-10 shown negative value, is about .

Keyword : HTR-10, coefficient reactivity, fuel

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