Westinghouse commercial nuclear power plants have an excellent safety record. There are more plants safely operating with Westinghouse technology than any other kind. The safety of these operating plants is achieved by substantial amounts of complex, redundant emergency equipment that requires electrical power and occasional operator actions. These are referred to as active safety features. The AP600 achieves safety by relying on the forces of nature, such as gravity, natural circulation, convection, evaporation, and condensation. By relying on these forces, there is no need for complex active systems and operator actions.