ML11293A408
| ML11293A408 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 09/09/2011 |
| From: | Office of Nuclear Reactor Regulation |
| To: | Division of License Renewal |
| References | |
| Download: ML11293A408 (2) | |
Text
1 Davis-BesseNPEm Resource From:
CuadradoDeJesus, Samuel Sent:
Friday, September 09, 2011 1:20 PM To:
'custerc@firstenergycorp.com'; dorts@firstenergycorp.com Cc:
Davis-BesseHearingFile Resource
Subject:
DB request for Teleconference Cliff:
Getting back to you on the topic we couldnt discuss last week. Allen Hiser (DLR technical expert) will be available for the call next Friday September 16, 2011 around 10:30am-12pm. Can we have the teleconference on this issue at that time next Friday?
RAI 4.1-2 regarding Code Case N-481 (8/17/2011 response letter)
In its response dated Aug 17, 2011, the applicant stated that the fracture toughness of the cast austenitic stainless steel is not time dependent as the analysis used a lower bound fracture toughness of 139 ksiin that bounds the saturated fracture toughness of the Davis-Besse material. The staff concern is that the applicants basis may be predicated on charpy or thermal aging data that are not up to date or conservative when compared to the most recent data for the state of the industry.
It is not clear to the staff whether the assumption that the lower bound fracture toughness of 139 and bounds the saturated fracture toughness of the applicants materials remains valid.
- Regards, Samuel Cuadrado de Jesús Project Manager Projects Branch1 Division of License Renewal U.S. Nuclear Regulatory Commission Phone: 301-415-2946 Samuel.CuadradoDeJesus@nrc.gov
Hearing Identifier:
Davis_BesseLicenseRenewal_Saf_NonPublic Email Number:
1446 Mail Envelope Properties (377CB97DD54F0F4FAAC7E9FD88BCA6D0804FC133FE)
Subject:
DB request for Teleconference Sent Date:
9/9/2011 1:20:22 PM Received Date:
9/9/2011 1:20:24 PM From:
CuadradoDeJesus, Samuel Created By:
Samuel.CuadradoDeJesus@nrc.gov Recipients:
"Davis-BesseHearingFile Resource" <Davis-BesseHearingFile.Resource@nrc.gov>
Tracking Status: None
"'custerc@firstenergycorp.com'" <custerc@firstenergycorp.com>
Tracking Status: None "dorts@firstenergycorp.com" <dorts@firstenergycorp.com>
Tracking Status: None Post Office:
HQCLSTR01.nrc.gov Files Size Date & Time MESSAGE 1320 9/9/2011 1:20:24 PM Options Priority:
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