The influence of operational and water chemistry parameters on the deposits of corrosion products on fuel assemblies at nuclear power plants with VVER reactors

被引：1
|
作者：
Kritskii V.G. [1 ]
Berezina I.G. [1 ]
Rodionov Y.A. [1 ]
Gavrilov A.V. [1 ]
机构：
[1] OAO All-Russia Design and Research Institute for Integrated Energy Technologies (VNIPIET), St. Petersburg, 197183
来源：
Thermal Engineering | 2011年 / 58卷 / 07期
关键词：
Corrosion Product; Power Unit; Fuel Assembly; Fuel Cycle; Reactor Core;
D O I：
10.1134/S0040601511070093
中图分类号：
学科分类号：
摘要：
The phenomenon involving a growth of pressure drop in the reactor core and redistribution of deposits in the reactor core and primary coolant circuit of a nuclear power station equipped with VVER-440 reactors is considered. A model is developed, the physicochemical foundation of which is based on the dependence of corrosion product transfer on the temperature and pHt value of coolant and on the correlation between the formation rate of corrosion products (Fe) (after subjecting the steam generators to decontamination) and rate with which they are removed from the circuit. The purpose of the simulation carried on the model is to predict the growth of pressure drop on the basis of field data obtained from nuclear power installations and correct the water chemistry (by adjusting the concentrations of KOH, H2, and NH3) so as to keep the pressure drop in the reactor at a stable level. © Pleiades Publishing, Inc., 2011.
引用
收藏
页码：540 / 546
页数：6
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