Abstract: The accident at the Fukushima Dai-Ichi nuclear plants that resulted from the severe earthquake and ensuing Tsunami that occurred on March 11, 2011 pointed out several potential weaknesses in the design of those plants relative to their ability to withstand the effects of beyond design-basis events. Both the previously estimated likelihood of occurrence of such an event as well as the plants' coping ability were called into question. As a result of these concerns, and in order to increase confidence in the ability of US nuclear plants to withstand extreme low probability events, the industry along with the US Nuclear Regulatory Commission have undertaken a series of significant actions designed to enhance plant safety. This seminar will provide a brief history of the industry/regulatory response to the accident and focus on the ongoing and upcoming industry initiatives that are designed to lessen the likelihood of a Fukushima-type incident in the US. Specifically we will cover such topics as: Revised external event hazard assessments (seismic and flooding) based on improved data and models, as well as changes to the plants and the surrounding locale since they were licensed; Proposed plant modifications to better accommodate external event threats; Plant modifications to extend the ability to cope with the impact of an extended station blackout event (loss of offsite power); Initiatives to improve plant and spent fuel pool instrumentation to improve real-time accident management capability; Emergency Response Planning improvements. As will be seen, these initiatives span the range of actions including improved analysis of events, physical plant modifications, and operational changes