ML071350651

Slides, Category 2 Public Meeting with NEI on the Implications of the Wolf Creek Dissimilar Metal Weld Inspections.

ML071350651
Person / Time
Site:	Wolf Creek
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 Implications of the Wolf Creek Dissimilar Metal Weld Inspections Ted Sullivan, NRR May 8, 2007

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 S. Nuclear Regulatory Commission 2

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 S. Nuclear Regulatory Commission 3

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 S. Nuclear Regulatory Commission 4

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)

S. Nuclear Regulatory Commission 5