ML20078F548

NPDES Noncompliance Rept Notification:On 950111,approx 2,500 Gallons of Suspected Low Concentration Propylene Glycol Solution Discharged to Site Outfall 002

ML20078F548
Person / Time
Site:	Calvert Cliffs
Issue date:	01/30/1995
From:	Cruse C BALTIMORE GAS & ELECTRIC CO.
To:	Reahl M MARYLAND, STATE OF, NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9502020149
Download: ML20078F548 (3)

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0 Curnn.ts H. CnesE Baltimore Gas and Electric Company Plant General Afanager Calvert Citfs Nuclear Power Plant Calvert CI:fs Nuclear Power Plant 165o Calvert Clifs Parkway Lusby, Afaryland20657 4to $86 2200 Ext. 4tos Local 410 260-4101 Baltimore January 30,1995 U. S. Nuclear Regulatory Commission ,

Washington, DC 20555 ATTENTION: Document Control Desk SUHJECT: Calvert Cliffs Nuclear Power Plant Unit Nos.1 & 2; Docket Nos. 50-317 & 50-318 ylqlation of NPDES PermiWo. MD0002399 in accordance with Section 3.2 of Appendix B, " Environmental Protection Plan (Non-Radiological)

Technical Specifications," attached is a copy of a letter reporting a recent violation of the National Pollution Discharge Elimination System (NPDES) permit for Calvert Cliffs Nuclear Power Plant.

Should you have questions regarding this matter, we will be pleased to discuss them with you.

Very truly yours, for C.11. Cruse .

Plant General Manager CilC/DWM/bjd ,

Attachment ec: D. A. Unme, Esquire J. E. Silberg, Esquire I.. B. Marsh, NRC D. G. ?.f cDonald, Jr., NRC T. T. Martin, NRC P. R. Wilson, NRC R.1. McLean, DNR J.11. Walter, PSC 9502020149 950130 l PDR ADOCK 05000317 8 PDR DV ' 2 Wi as73so fb'

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1 Curntts M. Cnest Baltimore Gas and Electric Company Plant General Manager Calvert Chfs Nuclear Power Plant ,

1650 Calvert Chfs Parkway i Calvert Chfs Nuclear Power Plant hsby, Maryland 20657 410 586 2200 Ext. 4 tot local  ;

4to 260-41o1 Baltimore l

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.1 January 20,1995 j

Michael Reahl I

State of MD - Department of the Environment l

Water Management Administration 2400 Broening Highway l Baltimore, Maryland 21224 l 1

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Dear Mr. Reahl:

RE: New Diesel Generator Building Drainage Sump Accidental Release at Calvert Cliffs Nuclear Power Plant NPDES Permit MD0002399A. State Permit 92-DP-0187A On January 11,1995, between the hours of 12:00 and 03:00 A.M., approximately 2500 l

gallons of a suspected low concentration propylene glycol solution was discharged to site outfall 002 from the building drain sump in a new diesel generator building. The l building and associated equipment are still under construction. The solution contained a l dye that was concentrated enough for the discharged solution to have a blue color.

There were visible indications of the discharge in the area of the 002 Outfall piping at 9.00 on the morning of January 12,1995. The Maryland Department of the Environment  ;

(MDE) was then immediately notified of the discharge.

Robert Daniel of MDE inspected the area in the vicinity of Outfall 002, at approximately 11:40 on January 12, 1995, and observed a green color of the discharge. By his direction, samples of the outfall were taken and the effluent of Outfall 002 was pumped l to an adjacent sediment collection basin starting at 3:00 P.M. until the effluent of the pump discharge was clear. As of 6:30 P.M. the 002 Outfall discharge was clear and the flow was returned to the bay. The discharge has remained clear since the event. The result of the 002 pipe discharge chemical analysis was:

Ethylene Glycol Non Detectable Propylene Glycol Non-Detectable Chemical Oxygen Demand 110 mg/l Biochemical Oxygen Demand 4 mg/l Total Kjeldahl Nitrogen <1 mg/l Total Nitrogen <2 mg/l Nitrate Nitrogen 0.8 mg/l

e To prevent a reoccurrence of this event from the diesel generator project, the project management organization has instituted several management practices. These efforts should ensure that no discharges of any system liquids or plant sump systems will be performed until an appropriate evaluation has been completed. During the constructior, phase of this project, all waste liquid generated will be disposed of either to the construction sediment pond or offsite via tank truck, If you have any questions regarding this information, please contact James Szymkowiak at (410) 260-4020 or Bob Kreger at (410) 260-2426.

Sincerely, inc /

'W CHC:JAS cc: J.F. Stine

Nuclear Regulatory Commission

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