ENS 47109
ENS Event | |
|---|---|
20:15 Jul 29, 2011 | |
| Title | Notification of North Carolina Wildlife Resources Due to Striped Bass Mortality |
| Event Description | Duke Energy Scientific Services group notified the NC [North Carolina] Wildlife Resources Commission that we (Duke Energy) had identified some striper fish mortalities in and around Cowan's Ford Dam on Lake Norman. We also notified North Carolina Department of Environmental and Natural Resources in Mooresville, N.C. about the Striper mortalities.
[Duke Energy personnel] collected 49 stripers in various stages of decay today (Friday, 7-29-2011). The fish collected were around the Cowan's Ford Dam and up to 1 mile North of Darn on Lake Norman. The Duke Energy Scientific Services group representative also notified the NC Wildlife Resources Commission that the McGuire Nuclear Station had been operating their Low Level Intake [LLI] Pumps to support compliance with our NPDES Permit average monthly temperature limit of 99 degrees Fahrenheit. July has been unusually hot and plant management has felt the need to run the LLI approximately 5 days to achieve compliance with our temperature limit. The LLI Pumps were secured July 25th at 2015. During the operation of the LLI pumps, Duke Energy's Scientific Services group was monitoring water quality and fish in the lake via the following activities. 1) Around-the-clock monitoring of fish behavior in the immediate vicinity of the LLI via a Didson Camera. The Didson Camera sits atop the LLI (25 meters deep) and records hourly video of areas both above the LLI and in front of the LLI. These videos are monitored remotely by [personnel] throughout the day and night. 2) Periodic water quality monitoring including dissolved oxygen and temperature profiles at every meter to the bottom of the lake. These profiles occur in the fore bay and at multiple locations up the lake channel. 3) Surveys for dead striped bass by boat up the major tributaries of the lake. Lengths, weights and condition of both dead and dying stripers are recorded before disposing of them. 4) Hourly MNS discharge temperature monitoring. The licensee notified the NRC Resident Inspector. |
| Where | |
|---|---|
Mcguire  North Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | |
| Time - Person (Reporting Time:+-2.67 h-0.111 days <br />-0.0159 weeks <br />-0.00366 months <br />) | |
| Opened: | Darryl Blackwelder 17:35 Jul 29, 2011 |
| NRC Officer: | Pete Snyder |
| Last Updated: | Jul 29, 2011 |
| 47109 - NRC Website | |
Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 563662023-02-16T14:15:00016 February 2023 14:15:00
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