用蒙特卡罗粒子(MCNP)程序预测加纳研究堆1(GHARR-1)运行19年后的电子和动力学参数

B. M. Mweetwa, E. Ampomah-Amoako, E. Akaho, C. Odoi
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引用次数: 1

摘要

加纳研究堆1号(Ghana Research Reactor-1, GHARR-1)的堆芯经过改进,在顶部垫片托盘上增加了一层9.0毫米厚的铍,以补偿运行19年后燃料耗尽造成的反应性损失。使用蒙特卡罗n粒子代码版本5 (MCNP5)预测了中子和动力学参数,以确定它们是否在可接受的经营范围内。过量反应性、控制棒值、慢化剂反应性系数、延迟中子分数和中子生成时间分别为3.86、6.98、- 0.1218 mk/°C、8.17507 × 10−3 Δk/k和8.147 × 10−5 s。这些参数与最初的安全分析报告中提供的参数相比是有利的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Prediction of Neutronic and Kinetic Parameters of Ghana Research Reactor 1 (GHARR-1) after 19 Years of Operation Using Monte Carlo-N Particle (MCNP) Code
The Ghana Research Reactor-1 (GHARR-1) core was modified with an addition of a 9.0 mm layer of beryllium to the top shim tray to compensate for reactivity loss due to fuel depletion after 19 years of operation. Neutronic and kinetic parameters have been predicted using Monte Carlo N-Particle Code version 5 (MCNP5) to determine whether they were within acceptable operating margins. Excess reactivity, control rod worth, moderator reactivity coefficient, delayed neutron fraction and neutron generation time have been predicted as 3.86, 6.98, −0.1218 mk/°C, 8.17507 × 10−3 Δk/k, and 8.147 × 10−5 s respectively. These parameters compared favorably with those provided in the initial Safety Analysis Report.
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