ASTEC simulation of fission product source term ruthenium in coolant in severe accident

被引：2

作者：

Hu, Wenchao ^{[1
]}

Zhao, Chuanqi ^{[1
]}

Bi, Jinsheng ^{[1
]}

Zhang, Pan ^{[1
]}

Shi, Xingwei ^{[1
]}

Pan, Xinyi ^{[1
]}

Song, Wei ^{[1
]}

Yi, Yan ^{[1
]}

机构：

[1] Nucl & Radiat Safety Ctr MEE, Beijing 100082, Peoples R China

来源：

ANNALS OF NUCLEAR ENERGY | 2019年 / 133卷

关键词：

SCALE code; ASTEC code; Severe accident; Source term; Ruthenium; Aerosol; SOPHAEROS; FUEL;

D O I：

10.1016/j.anucene.2019.06.063

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

We calculate the accumulation of ruthenium-106 with SCALE code and analyze the distribution of ruthenium-106 under different injection temperatures with ASTEC code. In deposited aerosol phase, the RuO and RuO2 increase with temperature, however the RuO3 increases rapidly and reaches equilibrium at a certain temperature of injection source. In suspended aerosol phase, the accumulation of RuO and RuO2 decreases continuously with rising of temperature, while RuO3 reaches the maximum at 750 degrees C. In gaseous phase, the masses of RuO and RuO2 increase and reach equilibrium rapidly. Similar to gaseous aerosol phase, the accumulation of RuO3 reaches to the maximum value at 750 degrees C. RuO4 appears when the temperature above 750 degrees C and the RuO4 mass at 900 degrees C are three times more than that of at 750 degrees C. Our results denote that a reasonable control of thermal-hydraulics parameters and redox conditions can effectively constrain the radionuclide ruthenium migration. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：658 / 664

页数：7

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