ML19289C401

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Forwards LER 78-035/01T-0
ML19289C401
Person / Time
Site: Oyster Creek
Issue date: 01/05/1979
From: Finfrock I
JERSEY CENTRAL POWER & LIGHT CO.
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19289C402 List:
References
NUDOCS 7901120137
Download: ML19289C401 (1)


Text

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- 7 3 5.; Jersey Central Power & Ught Company g7 p

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f4" ( ) Mad. son Avenue at Punch Boni Road Morristown New Jersey 07960

, , (201)455-8200 January 5, 1979 Mr. Boyce H. Grier, Director Office of Inspection and Enforcement Region i United States Nuclear Regulatory . Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 .

Dear Mr. Grier:

Subject:

Oyster Creek Nuclear Generating Station Docket No. 50-219 Licensee Event Report Reportable Occurrence No. 50-219/78-35/IT-0 This letter forwards three copies of a Licensee Event Report to report Reportable Occurrence No. 50-219/78-35/IT-0 in compliance with paragraph 6.6.1.a of the Technical Specifications.

Very truly yours,

' !aH/ I A' l Ivan R. Firyf rock, Jr.

Vice President cs Enclosures cc: Mr. John G. Davis, Acting Director (40 copies)

Office of Inspection and Enforcement United States Nuclear Regulatory Commission Washington, DC 20555

/ Mr. William G. Mcdonald, Director (3 copies)

Office of Management information and Program Control United States Nuclear Regulatory Commission Washington, DC 20555 790112013/ s I

Jersey Cen:ra! Power & L?ght Corrrany e a f.iember of me Geva: Pub : Ut M.cs System 5 -

F Jersey Central Power & Light Company

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Madison Avenue at Punch Bowl Road Mornstown, New Jersey 07960 (201)455-8200 0YSTER CREEK NUCLEAR GENERATING STATION Forked River, New Jersey 08731 Licensee Event Report Reportable Occurrence No. 50-219/78-35/IT-0 '

Report Date January 5, 1979 Occurrence Date December 22, 1978 w identification of Occurrence Violation of the Technical Specifications, paragraph 3.5. A.1.c.1, when the suppression pool water temperature exceeded 95'F. during power operation.

This event is considered to be a reportable occurrence as defined in the Technical Specifications, paragraph 6.9.2.a.2.

Conditions Prior to Occurrence The major plant parameters at the time of the occurrence were:

Power: Generator, 665 MWe Reactor, 1918 MWt Flow: Recirculation, 15.5 x 104 gpm Feedwater, 7.169 x 10 6 lb/hr Reactor Pressure: 1020 psig Stack Gas: 2.95 x 104 pC1/sec Description of Occurrence At approximately 12:45 p.m. on Friday, December 22, 1978, the suppression poc1 water temperature was found to be in excess of the Technical Specification for the limiting condition for power operation. The average value for the four suppression pool thermocouples at the time of the incident was 95.35*F.

Containment Spray System I was initiated at 1:20 p.m. in the suppression pool coolina mode and the suppression pool water temperature was subsequently brought bei. 95'F.

Apparent Cause of Occurrence The apparent cause of the occurrence was the failure of station personnel to recognize that the suppression pool water temperature was approaching the Technical Specification limit for that parameter.

Jersey Centra! Power & L+ght Company is a Member of the Geaera! Pubhc Utnt.es System ,