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首页> 外文期刊>World Journal of Nuclear Science and Technology >Study of Criticality Safety and Neutronic Performance for a 348-Fuel-Pin Ghana Research Reactor-1 LEU Core Using MCNP Code
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Study of Criticality Safety and Neutronic Performance for a 348-Fuel-Pin Ghana Research Reactor-1 LEU Core Using MCNP Code

机译：使用MCNP代码研究348燃料瓶加纳研究堆1 LEU堆的临界安全性和中子性能

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The National Nuclear Research Institute of the Ghana Atomic Energy Commission is undertaking steps to convert the Ghana Research Reactor-1 from HEU Core to LEU. The proposed LEU core consists of 12.5% enriched UO2 fuel elements clad in Zircaloy-4 alloy. This is done in collaboration with Reduced Enrichment for Research and Test Reactor. The versatile MCNP code was used to analyse the neutronics parameters given in the SAR of HEU core, thereby characterizing the core. Subsequently, the LEU core was indentified with necessary changes to the HEU MCNP model. It was ascertained that the reactivity for the LEU core with the same number of fuel pins as the HEU was inadequate, hence the fuel pins were increased from 344 to 348. The neutron flux at the irradiation sites was found to be below the nominal value at full power for the LEU and hence the nominal power was increased to 34 kW for a nominal flux value of 1 × 1012 n/cm2.s. The parameters investigated for the HEU and LEU are shown in this paper.
机译：加纳原子能委员会国家核研究所正在采取步骤，将加纳研究堆1从HEU堆芯转换为LEU。拟议的LEU堆芯由包覆Zircaloy-4合金的12.5％富集的UO2燃料元素组成。这是与研究和测试反应堆的浓缩减少量合作完成的。通用的MCNP代码用于分析HEU铁心SAR中给出的中子学参数，从而对铁心进行表征。随后，通过对HEU MCNP模型进行必要的更改来确定LEU核心。可以确定的是，使用与HEU相同数量的燃料销的LEU堆芯的反应性不足，因此燃料销从344增加到348。发现辐照位置的中子通量低于标称值。 LEU的全功率，因此对于1×1012 n / cm2.s的额定通量值，额定功率增加到34 kW。本文显示了针对HEU和LEU进行调查的参数。

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