Day 1 — February 10, 2004

Rob Tregoning from the USNRC welcomed everyone and explained logistics for the meeting. Rob had everyone introduce themselves. Next, Rob reviewed the agenda for the three-day meeting. Day 1 would focus mainly on piping; Day 2 on non-piping, and Day 3 on emergency and faulted loads plus soliciting feedback on the process. There are no results to present on the topic of emergency and faulted loads.

Only the basic approach will be shown.

Presentation #1 — Elicitation Project Plan, Schedule, and Milestones By Rob Tregoning

The NRC has initiated some ongoing work looking at active mechanisms, e. g., stuck open valves. Bill Galyean is doing this.

There is a SECY paper due to Commissioners on March 31, 2004 with LOCA frequencies for normal operating loads.

Rob will distribute a draft NUREG documenting expert elicitation results so the panel can provide feedback on the NUREG. Rob expects that the panelists will only a have short time (~2 weeks) to provide feedback.

For the April-June public meetings, Bruce Bishop from Westinghouse suggested meeting with the WOG risk-based group.

Most critical future milestone is finalizing individual expert responses for normal operating loading frequencies by February 25th.

Presentation #2 — Elicitation Results (Box and Whisker Plots By Rob Tregoning

Rob made a presentation on the details of the box and whisker plots that will be shown over the next 3 days. Many different methods of calculating percentiles; we used Standard method; fundamental message is that doesn’t make much difference in final analysis.