The following aims will be the main focus of the thesis:
1. To show the need of extend life cycle of the Nuclear power plants for future years I ‘m going to show the growth trend of the energy consumption, through energy report provided by the main world energy institutions and nation by nation the new NPP.
2. Once enhance the safety of the retrofitted circuit breaker through tests, I ‘m going ensure the safety stock of the circuit breakers. The first step is to calculate the reality risk of the plant and correlating to the statistical failure of the circuit breaker. The following step will be to optimize the stock. Reaching a pre-defined level of stock.