ENS 46114
ENS Event | |
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21:30 Jul 21, 2010 | |
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 (McGuire Nuclear Station) were experiencing some Striper mortalities in and around the Cowan's Ford Dam.
Since Monday (7/19/2010) of this week we have collected approximately 100 dead stripers. Some appear to have died from fishing related activities (catch and release) but some were also noted to be stressed from oxygen deprivation. [The Duke Energy Scientific Services group representative] also notified the NC Wildlife Resources Commission the McGuire Nuclear Station was operating their Low Level Intake [LLI] Pumps to support maintenance of their NPDES Permit 99 degree Fahrenheit average monthly temperature limit. July has been unusually hot and plant management has felt the need to run the LLI approximately 6 days to achieve compliance with our temperature limit. During the operation of the LLI pumps, Duke Energy's Scientific Services group is monitoring water quality and fish in the lake via the following activities: 1) Daily hydroacoustic surveys of the Cowans Ford Dam forebay both immediate to the dam and also an approximately 2 mile run up the Catawba River channel. 2) Around-the-clock monitoring of fish behavior in the immediate vicinity of the LLI. A DIDSON camera sits atop the LLI (25 meter deep) and is automated to record hourly video of areas both above the LLI and in front of the LLI using motorized rotators. These videos are monitored by [personnel] throughout the day and night. 3) Every other day water quality monitoring including dissolved oxygen and temperature profiles at every meter to the bottom of the lake. These profiles occur in the forebay and at multiple locations up the channel. 4) Daily surveys for dead striped bass by boat up the major tributaries of the lake. We will record lengths and condition of both dead and dying stripers before disposing of them. 5) Hourly MNS discharge temperature monitoring. These activates will continue to be exercised until the pumps are turned off. The licensee notified the NRC Resident Inspector. |
Where | |
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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:+-1.7 h-0.0708 days <br />-0.0101 weeks <br />-0.00233 months <br />) | |
Opened: | Richard Elliot 19:48 Jul 21, 2010 |
NRC Officer: | Pete Snyder |
Last Updated: | Jul 21, 2010 |
46114 - NRC Website
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Unit 1 | |
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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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