Popis: |
In general, a power plant (nuclear, thermal, chemical, etc.) consists of operating and emergency safety systems. These systems vary from simple to very complex systems. A system normally consists of active components and passive components. The failure of any operating system will lead to a change in the state of the plant. The availability of the plant depends on the successful operation of the components of the operating systems. In order to ensure the availability of the plant, reliability of the systems/components should be ensured. In recent years most of the advanced nuclear reactors implemented passive systems, aiming at improved safety and availability, in order to reduce human error, in particular, and active component malfunctions. The passive systems play an important role in various innovative reactor safety systems and can result in substantial economic benefits and simplicity in operation over the active systems. |