کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8067907 | 1521109 | 2016 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Analysis of control rod drop accident in PWRs with multipoint kinetics method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
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چکیده انگلیسی
A major group of accidents in PWRs is related to improper operation of control rods. Malfunction in control and protection system (CPS) of control rods or operator's error can be a cause of such events. This paper presents a study of the drop of one control rod accident with multipoint kinetic approach. The main aim of this work is the introduction of multipoint kinetics method as an accurate model for accident analysis. In this way, a coupled dynamic model based on point and multipoint kinetics formulation is developed for transient analysis. Also for reactivity feedback calculation, a simple thermal hydraulic simulation of the core is employed. To illustrate the capability of the proposed scheme, Bushehr Nuclear Power Plant, BNPP, which is a WWER-1000 reactor, is chosen and multiples of the 1/6 symmetry slices of the core is considered as nodes. Thus, the reactor core is divided into two, three, and six nodes in each case study, and the drop of one control rod accident, CRDA, is simulated. These results demonstrate that the multi point kinetics model can reflect not only the average information but also the distribution information of the core such as the spatial power, fuel temperature and coolant temperature distribution in the core. In addition, the accuracy, simplicity, and fast computation speed of the multipoint kinetics model make it a reliable method for simulation and design of the control system for WWER-1000 reactors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Nuclear Energy - Volume 88, February 2016, Pages 194-203
Journal: Annals of Nuclear Energy - Volume 88, February 2016, Pages 194-203
نویسندگان
H. Parhizkari, M. Aghaie, A. Zolfaghari, A. Minuchehr,