ML12044A302
| ML12044A302 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 09/02/2011 |
| From: | Mark King Office of Nuclear Reactor Regulation |
| To: | Robert Bernardo Office of Nuclear Reactor Regulation |
| References | |
| FOIA/PA-2011-0357 | |
| Download: ML12044A302 (1) | |
Text
King, Mark From:
King, Mark {
f-Sent:
Friday, September 02, 2011 7:15 AM To:
Bernardo, Robert
Subject:
RE: North Anna AIT - THANKS Thanks - got it.
From: Bernardo, Robert \\
Sent: Friday, September 02, 2011 7:14 AM To: King, Mark
Subject:
North Anna A!T Nothing much new out of the North Anna AIT phone call. Looking more and more like the EDG issue is related to maintenance. Team doesn't have any immediate safety concerns related to the plant or ISFSI. New issue that is coming up is related to the seismic instrument power supplies as well as where they are mounted, this is developing, and may be a generic issue. The licensee also noted that the 1J EDG frequency may have been oscillating beyond the +/- 11/2 hertz TS limits. This may be instrumentation, may have been actual oscillation.
Lastly, licensee indicated that they will have the report from the 3 rd party vendor concerning the actual acceleration levels by Sept 9, not today as they originally thought Bob Bernardo Reactor Systems Engineer US Nuclear Regulatory Commission NRRJDIRS/IOEB Mail Stop: O-7C02A 301-415-2621 Robert.Bernardo@nrc.gov I