ML031050102

E-mail from J Grobe to B Sheron, B Gorger, C Casto, G Holahan, J Zwolinski and M Mayfield, Industry Conference Presentation on Davis-Besse

ML031050102
Person / Time
Site:	Davis Besse
Issue date:	08/01/2002
From:	Grobe J NRC/RGN-III
To:	Boger B, Casto C, Holahan G, Mayfield M, Sheron B, Zwolinski J Office of Nuclear Reactor Regulation
References
FOIA/PA-2003-0018
Download: ML031050102 (2)

Text

'ZSt6_v__e'_n'_L:Cong'__- -Re'-Fl7wid: lndu§ti Conference Pfd-66tgti6ii

.1_____.______._.____.__. ---------

---

bfi Dgli-866i6 - -;-:.

z'_

---I'-- _-- P:gi,-

DJ=_ ij I From: John Grobe To: Brian Sheron; Bruce Boger, Charles Casto; Gary Holahan; John Zwolinski; Michael Mayfield Date: 8/1/02 8:18AM

Subject:

Re: Fwd: Industry Conference Presentation on Davis-Besse

>>> Brian Sheron 07/31/02 07:28PM >>>

Two comments:

1.) The RES slides have no context. You need lead-in slides to explain that NRR asked RES to perform these analyseps in order to help with the SDP part of the ROP. I -- I 2.) I would delete the last slide. This would imply that these are NRC lessons learned. They are not. We are still in the process of assessing what the lesons learned are.

,>>> John Grobe 07/31/02 09:15AM >>> 12-1.

Bruce/Chuck/Gary/John/Mike, Enclosed is a power point presentation that Mark Kirk and I intend to give during the industry conference at Amelia Island on August 13th. The focus of the 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> panel discussion is engineering analyses related to NSSS aging and degredation. In addition to Mark and me, the Panel will include Bruce Bevilacqua (Westinghouse), Alex Marion (NEI), amd Pat McCloskey (FENOC). Be patient when you II t

open the slides enclosure, it takes about 15 seconds to download the file. I II I will be discussing Slides I - 10 focusing on the degredation at Davis-Besse, Mark will discuss Slides 11 -

14 regarding the probabilistic fracture mechanics analyses that we are working on, and then I will finish with Slides 15 and 16 regarding where we are headed and some lessons learned Mark has done an exceptional job working with Mel Holmberg of my staff putting this presentation together. All of the materials except the last two slides have been used publically in the past in various meetings or are non-controversial, e.g., photographs.

Please focus particularly on the second last slide to ensure that you are comfortable with what I am saying there. I tried to ensure that the slide presents no conclusions regarding the risk assessment since we are not yet complete, while providing a clear focus on the types of analyses we have been working on and the additional analyses we may think are needed. The last slide is simply an opportunity for me to share some of my insights into the Davis-Besse situation.

I want to get this package to Donna Skay this week to ensure that she can get it into the conference d organizers. Please review it if you have the time and call/e-mail with any comments or questions.

Thanks.

Jack CC: Cynthia Carpenter; DB0350; Donna Skay; Doug Coe; James Caldwell; Jim Dyer; in m '3).'.A itii thy1frcedom of Information V

I -

\ ioniOe flto1*

)

A

I, Frf6djr

- -Ldhn'-

- ----9 R6:

M- 7I .1 -Fi--'hdl-i-onge-ePfseifonTn1-7~-5He e*-b--z  !, Pag Ili6~1 2g Mark Kirk; Michael Johnson; Nilesh Chokshi, Richard Barrett; Richard Borchardt; Stacey Rosenberg; Steven Long; Suzanne Black; Tad Marsh; William Kane