The Korean government has maintained a consistent national policy for stable energy supply by fostering nuclear power industries under the circumstances that energy resources are scare in the country. Korea has one of the most dynamic nuclear power programs in the world. For a couple of decades, Korea has deployed very dynamic nuclear power program. The first nuclear power plant (NPP), Kori #1, started its commercial operation in April 1978. As of September 2002, there are 17 units of nuclear power plants in operation and 3 units under construction_.