One of the challenges in the LOCA frequency estimation is trying to predict the probability of an event that has never happened before, but which has enormous consequences if it did. It is important to maintain a sense of balance in this effort and aim for a realistic approach that is based strictly on technical considerations. As in any probabilistic analysis, the success depends on how realistic the inputs are and how the approach reflects actual field experience. Having worked in the BWR industry for almost 30 years, Dr. Ranganath felt that his most important contribution to the elicitation process was to make sure that that frequency estimates reflect BWR field experience. For example, use of probabilistic defect distribution data is acceptable as long as the prediction is consistent with actual field behavior. Dr. Ranganath’s philosophy was to start from actual field data and to predict future behavior based on his understanding of failure mechanisms, mitigation measures and BWR systems design. Since his knowledge is mainly on BWR systems, he focused his attention on BWRs rather than PWRs. He did not want to speculate in areas where he did not necessarily have the expertise. There are other people who are more knowledgeable about PWRs and they can do a better job on the estimates. He felt that the diversity of the elicitation panel and their expertise and the open mindedness of the NRC team helped in coming up with the best estimates.