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《PADIATION PROTECTION》 1994-01
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DESIGN,MODEL,PARAMETERS AND CODE OF A REAL-TIME DOSE ASSESSMENT SYSTEM FOR QINSHAN NUCLEAR POWER PLANT

Hu Erbang;Wang Han;Jiang Yaoqiang(China Institute for Radiation Protection,Taiyuan,030006)Wang Wenhai;Chen Jiayi(Qinshan Nuclear Power Plant,Zhejiang Haiyan,314300)(Beijing University, 100871)  
This paper describes mainly the design,model, parameters and code of a real-timedose assessment system of accidental releases,which is used in Qinshan Nuclear PowerPlant.It consists of three parts:real-time data acquisition system, assessment computersystem and code system. The main computer is a set of Micro VAX Ⅱ computer with memory capacity of 9 Mb.The wind field at each hour is detcrmined bv a mass-consistent three-di-mensional diagnosis model in which the coordinate is changed with topography A lagranginpuff model under changing meteorological condition is adopted in calculation of atmosphericdiffusion,in which the domain is divided into three square grid areas of small,intermediateand large scale. A set of puff releases with different time interval at different stage is developed to simulate the release of various type of accident. Both the immersion cloud model andthe finite passing puff model are adopted to calculate the external exposure dose. The systemis able to give results in figures or tables about 10 minutes after data input:real-time andhistorical values of 22 operational safety parameters,environmental monitoring data, nuclideconcentrations and dose distribution.
【CateGory Index】: TL733
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