ML11273A019
| ML11273A019 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 09/30/2011 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| References | |
| Download: ML11273A019 (4) | |
Text
1 SeabrookNPEm Resource From:
Wentzel, Michael Sent:
Friday, September 30, 2011 9:21 AM To:
thomasp@resilientsocieties.org
Subject:
Follow-up From the Seabrook Station License Renewal Public Meeting Attachments:
Seabrook ER Table F.3.1.1.1-1.pdf Mr. Popik, I am writing to follow-up with the questions that I committed to providing a response to during the Seabrook Station draft supplemental environmental impact statement public meeting.
You had asked if there was any place in the environmental impact statement where initiating event frequency was listed. The environmental impact statement lists the initiating events in Table G-1 of the document, but not their frequencies. Initiating event frequencies can be found in Table F.3.1.1.1-1 of the applicants environmental report, which I have attached for your reference.
At the meeting you had also asked if the impacts of geomagnetic storms or other solar disturbances have been incorporated in any of the initiating event frequencies. Geomagnetic storms and solar disturbances were not explicitly considered for the Seabrook Station SAMA review. However, it should be noted that loss of offsite power due to weather and grid-related events were considered, and the frequencies were updated in 2004 reflecting the latest NRC and EPRI data on actual loss of offsite power events at nuclear power plants (so loss of offsite power events due to any cause, including solar disturbances if any, were included in the model, just not explicitly by cause).
For your awareness, NRCs response to the letter from Drs. Graham and Pry that you mentioned during the meeting, can be found online at the following links:
http://adamswebsearch2.nrc.gov/IDMWS/ViewDocByAccession.asp?AccessionNumber=ML11228A137 http://adamswebsearch2.nrc.gov/IDMWS/ViewDocByAccession.asp?AccessionNumber=ML112301365 The formal resolution of the comments that you provided during the meeting, and any you may choose to provide prior to the end of the comment period, will be documented in the final supplement environmental impact statement. As a reminder, the comment period on the Seabrook Station draft supplemental environmental impact statement is open until October 26, so if you have additional information that you would like to provide, please do so by that date. If you have any questions on how to provide additional comments, please let me know.
- Thanks, Michael Wentzel Michael Wentzel Project Manager U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation, DLR/RPB2 Mailstop O-11F1 Washington, DC 20555 301-415-6459 michael.wentzel@nrc.gov
Hearing Identifier:
Seabrook_License_Renewal_NonPublic Email Number:
1745 Mail Envelope Properties (C0A338EE37A11447B136119705BF9A3FF67261650D)
Subject:
Follow-up From the Seabrook Station License Renewal Public Meeting Sent Date:
9/30/2011 9:20:50 AM Received Date:
9/30/2011 9:20:51 AM From:
Wentzel, Michael Created By:
Michael.Wentzel@nrc.gov Recipients:
"thomasp@resilientsocieties.org" <thomasp@resilientsocieties.org>
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HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 2478 9/30/2011 9:20:51 AM Seabrook ER Table F.3.1.1.1-1.pdf 89869 Options Priority:
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