摘要
本文介绍江苏田湾核电厂核事故场外后果评价系统(TW-NAOCAS)的概况。该系统软件包括操作管理子系统,数据传输、气象数据预处理与风场诊断模块,风场预测模块,大气弥散模块和剂量估算与干预措施模块。TW-NAOCAS系统能在30 min内给出评价区(近区为20×20 km2、空间分辨率500 m,远区为80×80 km2、、空间分辨率4 km)的风场以及设计基准事故(DBA)和超设计基准事故(BDBA)释放的69种核素在各网格的浓度、预期剂量、隐蔽与撤离的可避免剂量及其区域等信息。文中简述了主要物理模块的计算模式,最后介绍了风场预测、大气扩散与剂量估算三个模块及例题的测试结果。
The development of accident off-site consequence assessment system TW-NAOCAS for Tianwan nuclear power plant in Jiangsu is introduced. This software system includes： operation subsystem; datatransport, meteorological data pre-processing and wind field diagnosis module; wind field prediction module, atmospheric dispersion module, dose estimation and intervention measure module. TW-NAOCAS could give the following information within 30 minutes： wind field in assessed area （near area： 20×20km^2, space resolution 500 m; far area： 80×80km^2, space resolution 4 km） ; concentration, prediction dose, evitable dose of sheltering and evacuation, etc. for various released nuclides in each reseau. The calculating mode of main physical modules is outlined. Finally, three modules estimation, measuring results of examples of wind field, atmospheric dispersion and dose are presented.
出处
《辐射防护》
CAS
CSCD
北大核心
2006年第5期286-298,共13页
Radiation Protection
关键词
田湾核电厂
事故场外后果
评价系统
Tianwan Nuclear Power Plant, Accident Off-site Consequence, Assessment System
