[en] A major generic topic that has recently required sizeable expenditures of time and manpower by the nuclear industry is Anticipated Transients Without Trip (ATWT). Analysis of ANS Condition II transients, assuming failure of the Reactor Protection System (and later other systems) was required by the NRC to determine the severity of such events. Although the nuclear industry has opposed the need to consider and design for the consequences of ATWT, one apparent conclusion of the analysis effort is the inherent stability of a Westinghouse Pressurized Water Reactor