Sharif Digital Repository

In this study the modeling of Bushehr power plant containment is considered. In Bushehr atomic power plant, which has a unique design, the containment is similar to PWR power plants with a metal sphere, but the installed reactor is a VVER-1000. After a full study on the containment and its systems, the required date for modeling is gathered and afterwards, the engineering handbook is prepared for MELCOR input code and then the modeling and size classification of the containment is done in 4 different ways, including the control volumes of 1, 9, 23 and 30 and then the temperature, pressure and density of hydrogen is examined. The result of studying control volume sensitivity reveals that 23... 

Nowadays, using smart buildings to improve performance and welfare of residents is of interest. Usually, these systems consist of safety systems that provide safety and security for residents. For example, fire detection system, sound the alarm and activating sprinkler in the building. For different types of critical events that can occur, variety of safety systems has been designed. Response time of these systems should be less than the deadline and the correct operation must be compeleted. As a result, analyzing and checking out the real-time and logical features of safety systems are the issues that we treat and investigate in this thesis.
In general, these systems are either... 

Various safety systems have been designed and developed in recent decades, but one of the most important issues is the improvement of safety of such systems and that is the goal of this research. In this thesis, while introducing different methods of designing an electronic system, we designed one of these safety systems: the Airbag system in accordance with ISO 26262 by considering standard requirements, prediction of potential hazards of the system, and its safe design at the system level. The designed system is capable of detecting the car crash in a precise and timely maner. The airbag will deploy within 45 milliseconds protecting the health and safety of occupants of the car and in... 

In this thesis we study non-parametric estimation of constrained bivariate probability density functions and discuss its applications in model construction of dynamical systems and their safety verification. In many industrial applications, it is essential to obtain an estimator for density functions that satisfy particular constraints. If additional information about distribution of a random variable is known in form of moment constraints, the kernel density estimator can be obtained by replacing uniform weights with the generalized empirical likelihood estimators.Our results indicate that the constructed kernel density estimator provides an improved approximation. Moreover, due to the... 

In this study, the determination of the distribution and the differences concentration of hydrogen in containment of Bushehr power plant by modeling of containment and Hydrogen removal system of Bushehr power plant during LB-LOCA accident is accomplished. In Bushehr nuclear power plant, which has a unique design, the containment is similar to PWR power plants with a metal sphere, but the installed reactor is a VVER-1000. After a full study on the containment and its systems, the required data for modeling is gathered and afterwards, the engineering handbook is prepared for MELCOR input code and then the modeling and size classification of the containment is done in 4 different ways,...