铀浓缩设施核应急实时评价系统开发
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摘要
本文介绍了我国首次集成开发的铀浓缩设施核应急实时评价系统。系统针对铀浓缩设施可以实时评价核临界事故和UF_6泄漏事故的辐射影响。系统可根据事故γ报警仪剂量率读数估算核临界裂变次数,并自动评价核临界事故后果。针对UF_6烟羽的重气特性,将重气模型与高斯烟羽模型相结合,可更准确地模拟UF_6的扩散过程。系统的开发解决了铀浓缩设施应急准备和响应一直缺乏的技术支持能力。
The paper introduces the first integrated real-time assessment system for nuclear emergency at uranium enrichment facility in China. The system can assess the radiation effects of nuclear criticality accidents and UF_6 leakage accidents in a real-time manner. It estimates nuclear criticality fission number according to the readings of γ alarm dose rate instrument, and automatically assess the nuclear criticality consequence. Focusing on the heavy gas characteristic of UF_6 plume, the system combines the heavy gas model with the Gaussian model, thus simulates more accurately the UF_6 diffusion process. The development of the system solves the problem of lacking the technical support capability for uranium enrichment facility in emergency preparedness and response.
The paper introduces the first integrated real-time assessment system for nuclear emergency at uranium enrichment facility in China. The system can assess the radiation effects of nuclear criticality accidents and UF_6 leakage accidents in a real-time manner. It estimates nuclear criticality fission number according to the readings of γ alarm dose rate instrument, and automatically assess the nuclear criticality consequence. Focusing on the heavy gas characteristic of UF_6 plume, the system combines the heavy gas model with the Gaussian model, thus simulates more accurately the UF_6 diffusion process. The development of the system solves the problem of lacking the technical support capability for uranium enrichment facility in emergency preparedness and response.
引文
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[2] 刘华,刘新华,李冰,等.日本JCO公司核临界事故的分析与评价[J].辐射防护,2001,21(6): 330-370.LIU Hua, LIU Xinhua,LI Bing, et al. Analysis and evaluation of the nuclear criticality accident in JCO Co. LTD in Japan [J]. Radiation Protection, 2001, 21(6):330-337.
[3] U.S. NRC. RASCAL 4: Description of models and methods[R].NUREG-1940. Washington: NRC, 2012.
[4] Hopper C M, Broadhead B L. An updated nuclear criticality slide rule [R]. NUREG/CR-6504. Vol.2. Oak Ridge National Laboratory. 1998.
[5] ZHANG Jiangang, YANG Yapeng. Development of emergency assessment abilities in China[C]. ICONE25-66049. 2017-07-03.
[6] 孙树堂,张建岗,贾林胜,等. SAFUIT/UF6环境评价模型验证与应用[J]. 环境科学与管理, 2016,41(7):77-80.SUN Shutang, ZHANG Jiangang, JIA Linsheng, et al. Verification and application of SAFUIT/UF6 model [J]. Environmental Science and Management, 2016, 41(7):77-80.
[2] 刘华,刘新华,李冰,等.日本JCO公司核临界事故的分析与评价[J].辐射防护,2001,21(6): 330-370.LIU Hua, LIU Xinhua,LI Bing, et al. Analysis and evaluation of the nuclear criticality accident in JCO Co. LTD in Japan [J]. Radiation Protection, 2001, 21(6):330-337.
[3] U.S. NRC. RASCAL 4: Description of models and methods[R].NUREG-1940. Washington: NRC, 2012.
[4] Hopper C M, Broadhead B L. An updated nuclear criticality slide rule [R]. NUREG/CR-6504. Vol.2. Oak Ridge National Laboratory. 1998.
[5] ZHANG Jiangang, YANG Yapeng. Development of emergency assessment abilities in China[C]. ICONE25-66049. 2017-07-03.
[6] 孙树堂,张建岗,贾林胜,等. SAFUIT/UF6环境评价模型验证与应用[J]. 环境科学与管理, 2016,41(7):77-80.SUN Shutang, ZHANG Jiangang, JIA Linsheng, et al. Verification and application of SAFUIT/UF6 model [J]. Environmental Science and Management, 2016, 41(7):77-80.