Abstract
During recent years, Nuclear Power Plants in U.S.A have achieved high performance both in plant capacity factor and safety operation indices. Such high performance has come from Licensees' strong initiative towards safety operation supported by US NRC. This paper describes regulatory activities by US NRC Region III Office based upon 2^<nd> JSME Delegation Visit to U.S.A., which provides us with some useful information to comprehend the above said high performance.
