ML12107A067
| ML12107A067 | |
| Person / Time | |
|---|---|
| Site: | Byron, Braidwood  |
| Issue date: | 03/22/2012 |
| From: | Mozafari B Division of Operating Reactor Licensing |
| To: | Holden L, Byam T Exelon Corp |
| References | |
| Download: ML12107A067 (2) | |
Text
1 NRR-PMDAPEm Resource From:
Mozafari, Brenda Sent:
Thursday, March 22, 2012 7:12 PM To:
Leslie.Holden@exeloncorp.com; timothy.byam@exeloncorp.com
Subject:
Followp question for MUR electrical review Attached is a follow-up question we need clarified (we can do this by telecom as soon as you feel ready and follow up by letter)
Braidwood and Byron MUR Follow-up Question (EEEB):
In response to the staffs request for additional information, Question No. 4, dated August 22, 2011, regarding the post-trip voltage being less than the required minimum for one case (N-1), the licensee stated that there are sufficient existing transmission assets (capacitors) available to maintain Byron Station's post contingency voltage above the 339.8 kV minimum value and, if necessary, contingency actions are in place to utilize off-cost generation. Therefore, the licensee concluded that the offsite power source has adequate capacity and capability to meet the requirements of GDC
- 17.
The staff understands that, in accordance with transmission system protocol, the licensee needs to address any voltage violations identified in the Com Ed transmission planning study (an assessment to show the capability of the grid to ensure adequate post-trip and LOCA voltage levels). The staff requests the licensee to explain the actions that have been taken to address this single contingency voltage violation.
Brenda L. Mozafari Senior Project Manager, NRR/DORL U.S. Nuclear Regulatory Commission 301-415-2020 email: brenda.mozafari@nrc.gov
Hearing Identifier:
NRR_PMDA Email Number:
327 Mail Envelope Properties (2FAF69DC4E22D44EB76E273D095272600B7B35F769)
Subject:
Followp question for MUR electrical review Sent Date:
3/22/2012 7:11:30 PM Received Date:
3/22/2012 7:11:00 PM From:
Mozafari, Brenda Created By:
Brenda.Mozafari@nrc.gov Recipients:
"Leslie.Holden@exeloncorp.com" <Leslie.Holden@exeloncorp.com>
Tracking Status: None "timothy.byam@exeloncorp.com" <timothy.byam@exeloncorp.com>
Tracking Status: None Post Office:
HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 1441 3/22/2012 7:11:00 PM Options Priority:
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