ML071350651

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Slides, Category 2 Public Meeting with NEI on the Implications of the Wolf Creek Dissimilar Metal Weld Inspections
ML071350651
Person / Time
Site: Wolf Creek Wolf Creek Nuclear Operating Corporation icon.png
Issue date: 05/08/2007
From: Ted Sullivan
Office of Nuclear Reactor Regulation
To:
Mensah T
References
Download: ML071350651 (5)


Text

Category 2 Public Meeting with NEI on the Category 2 Public Meeting with NEI on the Implications of the Wolf Creek Implications of the Wolf Creek Dissimilar Metal Weld Inspections Dissimilar Metal Weld Inspections Ted Sullivan, NRR May 8, 2007

2 U.S. Nuclear Regulatory Commission Purpose Purpose

  • Industry will present a matrix of potential modeling cases for the Phase II sensitivity, benchmarking, and validation calculations in their Advanced Finite Element Fracture Mechanics Analyses
  • NRC staff will provide comments or concerns regarding their modeling plans

3 U.S. Nuclear Regulatory Commission Public Participation Public Participation

  • This is a Category 2 meeting
  • The public is invited to participate in this meeting by discussing regulatory issues with the NRC at designated times during the meeting

4 U.S. Nuclear Regulatory Commission Agenda Agenda Introductions (Industry & NRC)

Status of industry work & Response to April 4, 2007 NRC letter (Industry)

Status of NRC Confirmatory Research (NRC)

Proposed Case Matrix (Industry)

Plant Specific Loads and Geometries Proposed Weld Residual Stresses Summary of May 1 Meeting Fabrication steps affecting WRS Repairs Crack Growth Rates Single Crack Growth Calculations Axisymmetric WRS field Axisymmetric + Repair WRS field Multiple Crack Growth Calculations

5 U.S. Nuclear Regulatory Commission Agenda Agenda

  • Additional topics:

- Critical Crack Size Calculations (Industry)

- Validation studies and WRS mockups (Industry)

- Benchmarking K Solutions for the Advanced FEA Calculations (Industry)

- Leak-rate Calculations (Industry)

  • Plans for next meeting(s) (Industry & NRC)

- Alloy 600 Conference

  • Meeting Summary & Conclusions (Industry & NRC)