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EFFECT OF F / M RATIO AGAINST NEUTRON FLUX DISTRIBUTION ON THE HTGR-10 MWth PEBBLE BED CORE

Hery Adrial, HA and Zuhair, ZR and Suwoto, ST and Syaiful Bakhri, SB and Geni Rina Sunaryo, GRS (2017) EFFECT OF F / M RATIO AGAINST NEUTRON FLUX DISTRIBUTION ON THE HTGR-10 MWth PEBBLE BED CORE. EFFECT OF F / M RATIO AGAINST NEUTRON FLUX DISTRIBUTION ON THE HTGR-10 MWth PEBBLE BED CORE. pp. 17-28. ISSN ISSN: 2355-7524

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Abstract

ABSTRACT EFFECT OF F/M RATIO AGAINST OF NEUTRON FLUX DISTRIBUTION ON THE HTGR- 10 MWTH PEBBLE BED CORE. The research on the effect of F/M ratio on neutron flux distribution in the HTGR-10 MWth pebble bed core has been done. The goal of this research is to know the effect caused by variations of pebble fuel ratio with pebble moderator (F/M) on neutron flux distribution at HTGR-10 MWth core and to obtain optimal F/M ratio to be applied in the HTGR- 10 MWth core. In this research, the first step is completed modeling of HTGR- 10 MWt then calculation of the neutron energy spectrum and neutron flux calculation, with variations F/M = 100: 0, 80:20, 60:40, 57; 43, 52; 48, 50 : 50, 40.60, and 20:80. Modeling and calculation are performed using the program package EGS99304 with 36 group vitamin C, MCNP6.1 and VisEd. The calculation results have shown that the resulting neutron spectrum is identical to the neutron spectrum that occurs on the core of the nuclear reactor. The highest neutron flux distribution of 1.32E + 14 n/cm2 sec occurred at F: M = 40:60 with the position at the center of the reactor core. The fuel ratio is also in the range of 40% to 60% to apply to the HTGR10 MWth core with multiplication factor value is in the range of 1.08 to 1.16. From the results of calculation, it can be concluded that highest flux the HTGR- 10 MWth is 1.32 E+14 n/cm2 sec with F/M ratio is 40:60, while the variation F/M ratio which can be used on HTGR-10 MWth is from the ratio of 40:60 to 60:40. Keywords: neutron flux, neutron spectrum, HTGR-10 MWth, pebble bed core, F/M ratio ABSTRAK PENGARUH RASIO F/M TERHADAP DISTRIBUSI FLUKS NEUTRON PADA TERAS HTGR-10 MWTH PEBBLE BED. Telah dilakukan penelitian mengenai Pengaruh rasio F/M terhadap distribusi fluks neutron pada teras HTGR-10 MWth pebble bed. Penelitian ini dilakukan bertujuan untuk mengetahui pengaruh yang ditimbulkan akibat variasi rasio bahan bakar pebble dengan moderator pebble (F/M) terhadap distribusi fluks neutron pada teras HTGR-10 MWth dan untuk mendapatkan rasio F/M yang optimal untuk diaplikasikan di dalam teras HTGR-10 MWth. Dalam penelitian ini terlebih dahulu dilakukan pemodelanHTGR-10 MWth secara lengkap kemudian dilakukan perhitungan spektrum energi neutron dan fluks neutron dengan variasi F/M = 100:0, 80:20, 60:40, 57;43, 52;48, 50:50, 40,60, dan 20:80. Pemodelan dan Perhitungan dilakukan dengan menggunakan paket program EGS99304 dengan menggunakan 36 group vitamin C , MCNP6.1 dan VisEd. Hasil perhitungan menunjukkan spektrum neutron yang dihasilkan identik dengan spektrum neutron yang terjadi pada teras reaktor nuklir. Distribusi fluks neutron tertinggi sebesar 1.32E+14 n/cm2 det terjadi pada F:M = 40:60 dengan posisi berada di tengah-tengah teras reaktor. Didapat pula rasio bahan bakar dalam kisaran 40 % sampai 60 % untuk dapat aplikasikan ke dalam teras HTGR10 MWth dengan nilai faktor multiplikasi berada pada kisaran 1,08 sampai 1,16. Dari hasil perhitungan yang dilakukan dapat disimpulkan bahwa pada HTGR-10 MWth fluks tertinggi dapat mencapai nilai 1.32E+14 n/cm2 det dengan F/M rasio = 40:60 sedangkan variasi F/M rasio yang dapat digunakan pada HTGR-10 MWth adalah dari rasio 40:60 sampai 60:40. Kata kunci: fluks neutron, spectrum neutron, HTGR-10 MWth, pebble bed, F/M rasio

Item Type: Article
Subjects: Keselamatan dan Keamanan Nuklir
Divisions: Pusat Teknologi dan Keselamatan Reaktor Nuklir
Depositing User: USER PTKRN BATAN
Date Deposited: 08 May 2018 01:51
Last Modified: 08 May 2018 01:51
URI: http://repo-nkm.batan.go.id/id/eprint/1110

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