ML031110304

to Steve from Mark

ML031110304
Person / Time
Site:	Davis Besse
Issue date:	05/28/2002
From:	- No Known Affiliation
To:	Office of Nuclear Reactor Regulation
References
FOIA/PA-2003-0018
Download: ML031110304 (1)

Text

Sent on 5-28-02 Steve -

Thanks for stopping by today to discuss fragility curves Our discussion helped to clarify what you are looking for. I will speak with both Gery and Richard to see what the best path forward is Please don't forget that to proceed along any path we will need from you a description of the as-found geometry of the cavity. Since the cavity geometry has a first-order effect on the failure pressure it is critically Important to get this Input right". To be candid. If we do not at this time have much better / less equivocal measurements of the cavity from the licensee than we used in our previous calculations then there islittle point to performing the probabilistic calcs you have requested becasue the uncertainty in knowledge of the geometry (which in principal Isnot uncertain at all) will swamp all other factors Anyway, please let me know the schedule for getting the geometry definition, and I will keep you apprised re.

what we come up with with Richard and Gery. Also (finally) your boss needs to talk to my boss (Nilesh ... but Debbie Jackson Isacting for the next 2 days) about funding Thanks much, Mark

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