ML18009A881

NPDES Noncompliance Notification:On 910310,bldg Sewage Collection Tank Pump Discovered to Be de-energized During Electrical Bus Outage.Caused by Inoperable Pump.Personnel to Refrain from Using Rest Rooms Until Power Restored

ML18009A881
Person / Time
Site:	Harris
Issue date:	04/29/1991
From:	Richey R CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
HO-910055-(O), NUDOCS 9105060044
Download: ML18009A881 (6)

Text

P~CCELERATED DI<

UTION DEMONS'TION SYSTEM I'OTES:Application for permit renewal filed.

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BECKER,D 1

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1 REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS) 4 ACCESSION NBR:9105060044 DOC.DATE: 91/04/29 NOTARIZED: NO FACIL:50-400 Shearon Harris Nuclear Power Plant, Unit 1, Carolina AUTH.NAME AUTHOR AFFILIATION RICHEY,R.B.

Carolina Power 6 Light Co.

RECIP.NAME RECIPIENT AFFILIATION-Document Control Branch (Document Control Desk)

SUBJECT-:

NPDES noncompliance notification:on 910310,bldg sewage collection tank pump discovered to be de-energized during electrical bus outage. Caused by inoperable pump. Personnel refrain from using rest rooms until power restored.

DISTRIBUTION CODE:

IE22D COPIES RECEIVED:LTR

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TITLE: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.

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D NOTE TO ALL"RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE O'ASTE! CONTACTTHE DOCUMENT CONTROL DESK, ROOM P !-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED:

LTTR 33 ENCL 33 D

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Carolina Power & Light Company P,O. Box 165 ~ New Hill;N. C. 27562 R. B. RICHEY Vice President Harris Nuclear Project HARRIS NUCLEAR PROJECT PE 0. Box 165 New Hill, North Carolina 27562'PR 2 9 1991 Letter Number'.

HO-910055 (0)

United States Nuclear Regulatory Commission Document Control Desk Washington, D.C.

20555 SHEARON HARRIS NUCLEAR POWER PLANT Docket No. 50-400, License NPF-63 NONROUTINE REPORT

Enclosed is a

Nonroutine Report pursuant to Append'ix B, Section 5.4.2 of the plant Operating License.

This report is a

copy of the state NPDES Report as required by this Operating License subsection.

Very truly yours, MRH:kjc Enclosure Vice President Harris Nuclear Project cc:

Mr. R. A. Becker Mr. S.

D. Ebneter Mr. J.

E. Tedrow 9105060044 91042x PDR ADOCK 0 000400 PDR MEM/HO-9100550/1/OS1

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ATTACHMENT TO SHEARON HARRIS NUCLEAR POWER PLANT NPDES REPORT FOR MARCH 1991 Sewa e 'Leaka e to Storm Drains At approximately 0845 on March 10, -1991, the K Building Sewage collection tank pump was discovered to be de-energized during an electrical bus outage.

The inoperable pump caused the collection tank to overflow leaking about 50 gallons of raw sewage to the area catch basin.

The catch basin already contained approximately 500 gallons of rain water.

Upon high water level, the catcn basin pump automatically pumped the water to the storm drains.

The spill was not detected in time to i'solate the catch basin since it was estimated that the power to the collection tank pump was off for about 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> 'efore the spill was detected.

Immediate action was taken to secure the K Building potable water supply at 0855.

A plant wide announcement was made to alert K Building personnel to refrain from using the rest rooms until power was restored.

The storm drain runoff collection dike at the plant boundary was checked for dissolved oxygen.

This analysis showed an oxygen concentration of 3.2 ppm.

A sample of a small nearby rain pool showed an oxygen concentration of 3.6

ppm, It was concluded that, the sewage would have only a minimum effect on the oxygen in the lake at the storm drain discharge point.

Visual inspection of the storm drain discharge poi'nts at the plant boundary and Harris Lake showed no evidence of the sewage.

The plane is evaluating this incident and will implement corrective actions as required.

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