| MCNP5在固态燃料熔盐堆功率分布计算的应用 |
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| 引用本文： | 彭红花,严睿,朱贵凤,邹杨,马洪军.MCNP5在固态燃料熔盐堆功率分布计算的应用[J].强激光与粒子束,2018,30(1):016003-1-016003-6. |
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| 作者姓名： | 彭红花 严睿 朱贵凤 邹杨 马洪军 |
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| 作者单位： | 中国科学院 上海应用物理研究所, 上海 201800 |
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| 基金项目： | 中国科学院战略性先导研究项目资助XDA02010200 |
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| 摘 要： | 采用蒙特卡罗输运程序MCNP5对固态燃料熔盐实验堆(TMSR-SF1)能量沉积比例及功率分布进行了计算分析。针对MCNP5不能处理缓发β及缓发γ的能量沉积问题进行了类比等效处理。对固态燃料熔盐实验堆在寿期初、寿期中、寿期末相应的能量沉积比例及功率分布进行了研究。通过计算发现，固态燃料熔盐实验堆内燃料球相比于压水堆棒状燃料元件(95%~97%左右)而言，能量沉积比例有所偏小，约为93%。同时，由于堆芯功率分布均匀，功率峰因子较小(约1.5)，堆芯安全性较好。
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| 关 键 词： | 固态燃料熔盐实验堆 燃料球 能量沉积 功率峰因子 |
| 收稿时间： | 2017-06-20 |
Application of MCNP5 in power distribution calculations of solid fuel molten salt reactor |
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| Affiliation: | Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China |
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| Abstract: | A Monte Carlo Code MCNP5 is used to analyse the energy deposition ratio and power distribution in thorium-based molten salt experiment reactor with solid fuel (TMSR-SF1). Since MCNP5 could not deal with the deposition energy from delayed beta and gamma ray photons, an analog equivalent method is used to take them into account. Then, the energy deposition rate and power distribution in TMSR-SF1 are calculated during the beginning, the middle and the end of the reactor life cycle. The results indicate that, compared with the PWR fuel rod (which is about 95%-97%), the energy deposition ratio in the pebble of TMSR-SF1 is smaller (about 93%). At the same time, TMSR-SF1 behaves good safety feature due to its low power peak factor (about 1.5). |
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