ML20237B504

NPDES Noncompliance Notification:On 980720,lightning Caused Relay Failure on Conventional Waste Sys Lift Station IW-6 Which Caused Pumps to Shut Off.Caused by OOS Alarm Sys.Pumps Were Manually Cycled Until Power Could Be Restored

ML20237B504
Person / Time
Site:	Mcguire, McGuire
Issue date:	08/10/1998
From:	Barron H DUKE POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9808180346
Download: ML20237B504 (3)

Text

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gg Duk) Energy C:rporation EU@" McGuire Nudcar Station '

12700 Hagers Ferry Road Hunt.ersville, NC 28078-9340

11. D.,Barron ,

(704) 87S 4800 omCE

• Vice 1%ident (704) 875-4809 FAX August; 10, 1998 4

U. S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555

Subject:

McGuire Nuclear Station Docket Nos. 50-369, 50-370 Pursuant to Duke's_ Corporate Environmental Manual, (formally McGuire j Technical Specifications, Appendix B, Section 3.2) please find attached a copy of a minor NPDES Permit infraction which occurred at our facility on the morning of July 21, 1998.

Questions should be directed to Kay Crane, McGuire Regulatory Compliance at (704) 875-4306.

/

H. B. Barron, Vic President

• d McGuire Nuclear Station ec: Mr. Frank Rinaldi, Project Manager Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. Luis Reyes, Regional Administrator U.S. Nuclear Regulatory Commission ]

Region II

• Atlanta Federal Center j 61 Forsyth St., SW, Suite 23T85  ;

Atlanta, Georgia 30303 Mr. Scott Shaeffer Senior Resident Inspector McGuire Nuclear Station

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i, 9808100346 900810 a

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t PDR ADOCK 05000369 -

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$3h hfie Duk3 PowIr CompIny A vuke Envy compny C POWeE McGuire Nudear Station d % w,,c.v., 12700 Hagers Ferry Road Huntersydle, NC 28078-9.340

, (704) 875 Ill00 July 24,1998 i

( Mr. Rex Gleason, P.E.

Regional Manager, Water Quality Section North Carolina Department of Enviromnent and Natural Resources 919 North Main Street Mcoresville, North Carolina 28115 Re: Lifl Station Overflow McGuire Nuclear Station NPDES Permit # NC0024392 Mecklenburg County l i

Deir Mr. Gleason- I l

Th s is a follow-up report to the lift station overflow that occurred at our facility on the morning of July 21,1998. Telephone notification was made to Mr. Richard Bridgeman of the Mooresville Regional Office on July 21,1998 by Bob Caccia of Duke Power's Environment, Health and Safety Division. Additional information was e-mailed to Mr. Bridgeman on July 2!,1998. I During the night of July 20, lightning caused a relay failure on conventional waste system lift

. station IW-6, which caused the pumps to shut off. The alarm system was out of service for repair j so the lin station overflowed until noticed by a guard on rounds. Given the rate of flow into the lift i station and time of the storm, we estimate approximately 1500 gallons of wastewater overflowed  !

and discharged into the nuclear service water pond. The nuclear servi c water pond discharges  !

into the waste water collection basin which is the ultimate destination of the conventional waste lin station end is pennitted as outfall #002. The lin station receives discharges from oil water ,

scpratcirs, equipment cooling water and other miscellaneous discharges. However, there was no evidence of oil on any of the ponds.

Upon discovery of the overflow, the pumps were manually cycled until the power could be restored to le lin station. Should you have any comments or need additional information, please contact me at 704-875-5969.

f- l N Dayna 1Wrrick, A.

Environmental Manager McGuire Nuclear Station c: David Goodrich, NCDENR - Raleigh Angela Grooms, MG03AS Kay Cranc, MG0lRC .

Doug Tricce, MG01CH

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l McGuira Nucl:ar St ti:n NPDES P;rmit No. NC0024392 Meckl;nburg Co. f Submitted to: Richard Bridgeman 5-daynotification E-Mail address: Richard _Bridgeman @ mro.en r. state.nc.us l Discovered Ratification Date: 7/21/98 Date: 7/21/98 -

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Time: 12:45 a.m.

l Time: 10:23 am l

Event

Description:

During the night of July 20, lightning caused a relay failure on conventional waste system lift station IW-6 which caused the pumps : 2 shut off. The alarm system was out of service for repair so the lift l station overflowed until noticed by a guard on rounds. Given the rate of flow into the lift station and time

of the storm, we estimate approximately 1500 gallons of wastewater overflowed and discharged into the l nuclear service water pond, over about five hours. The nuclear service water pond discharges into the waste water collection basin which is the ultimate destination of the conventional waste lift station and is permitted as outfall #002. The lift station receives discharges from oil water separators, equipment cooling water and other miscellaneous discharges. However, there was no evidence of oil on any of the pond.s.

Immediate Corrective Action:

Upon discovery of the overflow, the pumps were manually cycled until the power could be restored to the lift station.

Detailed Investigation / Prevention:

This incident was the result of a lightning strike that caused a relay failure that supports a lift station. An estimated 1,500 gallons was lost to the MNS nuclear service water pond. This pond flows to the waste water collection basin and out NPDES outfall #002.

No adverse environmental consequences were observed as a result of this incident.

i Mditional Cornments: j Telephone notification was made to Mr. Richard Bridgeman of the Mooresville Regional Office on July 21,1998 by Bob Caccia of Duke Power's Environment, Health and Safety Division. Additional information was e-mailed to Mr. Bridgeman on July 21,1998.

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For additional inquiregaltRat_GQDiaG1; Person alvingAotice, j Ellen Gaddy Name: Robert Caccia j Name: l Phone: 875-4316 Phone #: 875-5268 l Reaccia@ Duke-Energy.com E-Mail: E Mall: l l I l

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