%A (1217041009) ARIZKA ANTARTIKA PUTRI 
%T PERHITUNGAN BURN UP MODEL ASSEMBLY X-Y 2 DIMENSI
PADA SCWR MENGGUNAKAN BAHAN BAKAR THORIUM
%X ABSTRAK

Penelitian tentang perhitungan burn up model assembly x-y 2 dimensi pada
SCWR menggunakan bahan bakar thorium. Perhitungan dilakukan dengan
simulasi komputasi menggunakan kode ASMBURN pada program System
Reactor Atomic Code (SRAC). Parameter yang dianalisis pada penelitian ini
meliputi pengayaan bahan bakar, radius pin bahan bakar, densitas daya, produksi
bahan bakar yaitu uranium-233, uranium-235 dan plutonium-239, penambahan
burn up, dan perubahan daya linear. Hasil perhitungan menunjukkan pengayaan
yang ktitis terdapat pada pengayaan 3%, radius pin bahan bakar sebesar 0,434 cm,
selongsong 0,489 cm, dan moderator 0,640 cm. Nilai densitas daya menurun
sebesar 0,00798% seiring pertambahan burn up. Nilai densitas atom pada
produksi bahan bakar uranium-233 mengalami penurunan sebesar 40,77%,
sementara itu densitas atom uranium-235 dan plutonium-239 mengalami
kenaikan.
Kata Kunci : burn up, SCWR, thorium, uranium, keff.

ABSTRACT

Research about study of burn up calculation of x-y 2 dimensional assembly model in
SCWR using thorium as fuel materials has been done. The calculation was performed
by using simulation computation ASMBURN code in System Reactor Atomic Code
(SRAC) program. The analyzed parameters were fuel enrichment, fuel pin radius,
power density, fuel production of uranium-233, uranium-235, and plutonium-239,
increasing burn up level, and linear heat changed. The calculation results showed
that critical condition of reactor at 3% of enrichment, 0.434 cm of fuel pin radius,
0.489 cm of cladding, and 0,640 cm of moderator. Due to power density decreased
about 0.00798% by increasing burn up. Atomic density of uranium-233 decreased
about 40.77%, uranium-235 and plutonium-239 were increased.
Keywords: burn up, SCWR, thorium, uranium, keff.




%C UNIVERSITAS LAMPUNG
%D 2017
%I FAKULTAS MATEMATIKA DAN ILMU PENGETAHUAN ALAM
%L eprints26426