Neutronic effect of utilizing TRIZO particles on core characteristics of experimental power reactor

Zuhair,; Dwijayanto, R. Andika Putra; Adrial, HA Hery; Suwoto, Suwoto; Setiadipura, Topan

doi:10.1063/1.5135514

Cited by 1 publication

(1 citation statement)

References 16 publications

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“…Core com po nents and struc tures, such as ax ial and ra dial re flec tors, etc., were mod eled in a sim pler way. A de tailed de scrip tion of this pro ce dure was first in troduced by Lebenhaft [19] and found in sev eral pub li cations [20][21][22][23][24][25][26][27][28]. The whole fa cil ity mod el ing of HTR-Proteus is il lus trated in fig.…”

Section: Cal Cu La Tion Modelmentioning

confidence: 99%

Study on kinetic parameters characteristics of pebble bed reactor using HTR-proteus facility

Zuhair¹,

Luthfi²,

Sriyono³

et al. 2022

NUCL TECH RAD PROT

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The inherent safety feature of a pebble-bed reactor can be observed from its kinetic parameters. Proper modeling for calculating the reactor kinetic is also a concern for safe operation during normal and transient conditions. This study is intended to investigate the kinetic parameters characteristics of a pebble bed reactor using HTR-Proteus. A series of calculations were conducted using MCNP6 code and ENDF/B-VII library. The calculation results show that the negative value on core temperature reactivity is affected dominantly by the Doppler broadening effect. Prompt neutron lifetime l and mean generation time ? are slightly changed due to an increase in fuel temperature, moderator, and reflector that changed the neutron moderation and absorption over this part of the reactor. For (Th, U)O2, UO2, and PuO2 cores, the effective delayed neutron fraction ?eff values are more influenced by 233U, 235U, and 239Pu, respectively. In terms of stability during reactivity insertion, the UO 2 core is more stable and easier to control because its ?eff value is the largest compared to (Th,U)O2 and PuO 2 cores. It can be concluded that temperature must be controlled because it does not only affect the reactivity but also kinetic parameters as part of developing inherent safety features on the pebble-bed reactor.

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