ML091890815

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ME0969 & ME0970, Follow-up RAI from PRA to Licensee Responses (PLA-6526, Dtd 07-01-2009)
ML091890815
Person / Time
Site: Susquehanna  Talen Energy icon.png
Issue date: 07/06/2009
From: Bhalchandra Vaidya
Plant Licensing Branch 1
To: Coddington C, Filchner D, Hoffman C, O'Rourke B
Susquehanna
vaidya B, NRR/Dorl/lpl1-1, 415-3308
References
TAC ME0969, TAC ME0970
Download: ML091890815 (2)


Text

From:

Vaidya, Bhalchandra Sent:

Monday, July 06, 2009 10:29 AM To:

'dlfilchner@pplweb.com'; 'O'Rourke, Brenda W'; 'ckhoffman@pplweb.com';

'Coddington, Cornelius T' Cc:

Salgado, Nancy

Subject:

FW: ADDITIONAL CLARIFICATION

Subject:

FW: PRA Comments and Follow-up RAIs on PPL Response to PRA RAIs for T-20 TS submittal, ME0969 & Me0970 Additional comments for discussion in tomorrow's tele-conference.

Bhalchandra K. Vaidya Licensing Project Manager NRC/NRR/DORL/LPL1-1 (301)-415-3308 (O) bhalchandra.vaidya@nrc.gov From: Howe, Andrew Sent: Monday, July 06, 2009 10:25 AM To: Vaidya, Bhalchandra

Subject:

ADDITIONAL CLARIFICATION Upon further review of the licensee response to RAI 2e, I will need additional clarification on this. I cannot understand if they are saying that the base CDF/LERF increases, or the configuration-specific risk increases (which is what I am interested in). What I wanted was a sensitivity case (s) to understand how dependent the risk results of this application are on the assumed availability of these backup power sources. I expected to see ICCDP/ICLERP for these different cases. The licensee needs to explain exactly what this response is telling me regarding a 30% CDF/ 18% LERF increase.

Andrew J Howe NRR - Division of Risk Assessment O10H20 301-415-3078 andrew.howe@nrc.gov E-mail Properties Mail Envelope Properties ()

Subject:

FW: ADDITIONAL CLARIFICATION Sent Date: 07/06/2009 10:26:09 AM Received Date: 07/06/2009 10:28:00 AM From: Vaidya, Bhalchandra

Created By: Bhalchandra.Vaidya@nrc.gov Recipients:

dlfilchner@pplweb.com ('dlfilchner@pplweb.com')

Tracking Status: None BWORourke@pplweb.com ('O'Rourke, Brenda W')

Tracking Status: None ckhoffman@pplweb.com ('ckhoffman@pplweb.com')

Tracking Status: None ctcoddington@pplweb.com ('Coddington, Cornelius T')

Tracking Status: None Nancy.Salgado@nrc.gov (Salgado, Nancy)

Tracking Status: None Post Office:

Files Size Date & Time MESSAGE 13498 07/06/2009 Options Expiration Date:

Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received: