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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Analysis of Reactivity Induced Accident for Control Rods Ejection with Loss of Cooling
Author(s)
Hend Mohammed El Sayed Saad1, Hesham Mohammed Mohammed Mansour2 and Moustafa Aziz Abd El Wahab1
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DOI:10.17265/2161-6221/2013.02.008
Affiliation(s)
1. Nuclear and Radiological Regulatory Authority, Nasr City, Cairo 11762, Egypt 2. Physics Department, Faculty of Science, Cairo University, Giza 12613, Egypt
ABSTRACT
Understanding of the time-dependent behavior of the neutron population in nuclear reactor in response to either a planned or unplanned change in the reactor conditions, is a great importance to the safe and reliable operation of the reactor. In the present work, the point kinetics equations are solved numerically using stiffness confinement method (SCM). The solution is applied to the kinetics equations in the presence of different types of reactivities and is compared with different analytical solutions. This method is also used to analyze reactivity induced accidents in two reactors. The first reactor is fueled by uranium and the second is fueled by plutonium. This analysis presents the effect of negative temperature feedback with the addition positive reactivity of control rods to overcome the occurrence of control rod ejection accident and damaging of the reactor. Both power and temperature pulse following the reactivity- initiated accidents are calculated. The results are compared with previous works and satisfactory agreement is found.
KEYWORDS
Reactivity induced accident, stiffness confinement method, point kinetic equations, control rods ejection, reactivity coefficient, safety analysis.
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