ML20101N049

Special Rept 1-96-2:on 960310 & 23,non-valid DG Failures Occurred.Rocker Arm Clearances Adjusted & DGs Restarted & Operated Successfully

ML20101N049
Person / Time
Site:	Vogtle
Issue date:	04/02/1996
From:	Mccoy C GEORGIA POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
1-96-2, LCV-0786, LCV-786, NUDOCS 9604080209
Download: ML20101N049 (2)

Text

a Geor;1a Power Company w - 40 inverress Center Parkway l ,

, P,,3.t O'hce Box 1295 Birmingharn Alabama 35201 Telephone 205 877 7122 m

C. K McCoy Georgia Power vu, Pres &nt Nucio Voutte Pranct .

Uc southun eutnc s ystem LCV-0786 Docket No. 50-424 U. S. Regulatory Commission ATIN: Document Control Desk Washington, D. C. 20555 Gentlemen:

VOGTLE ELECTRIC GENERATING PLANT SPECIAL REPORT 1-96-2 NON-val ID DIESEL GENERATOR FAILURES In accordance with the requirements of Vogtle Electric Generating Plant Technical Specifications (TS) sections 4.8.1.1.3 and 6.8.2, Georgia Power Company submits the enclosed special report concerning non-valid diesel generator failures.

Sincerely, O. . al '

C. K. McCoy CKM/TEW

Enclosure:

Special Report 1-96-2 xc: Georgia Power Conmany Mr. J. B. Beasley, Jr.

! Mr. M. Sheibani NORMS U. S. Nuclear Regulatory Commission Mr. S. D. Ebneter, Regional Administrator Mr. L. L. Wheeler. Licensing Project Manager, NRR Mr. C. R. Ogle, Senior Resident inspector, Vogtle i

I l 080070 l 9604080209 960402 l PDR ADOCK 05000424 i t'DR

! S

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- s VOGTLE ELECTRIC GENERATING PLANT - UNIT 1 TECIINICAL SPECIFICATION SPECIAL REPORT l-96 2 NON-val.ID DIESEL GENERATOR (DG) FAILURES 1 A. REQUIREMENT FOR REPORT This report is required in accordance with the Vogtle Electric Generating Plant Technical Specifications (TS), section 4.8.1.1.3, which requires that all diesel generator (DG) failures, valid or non-valid, be reported to the Commission in a special report pursuant to TS 6.8.2.

H. DESCRIPTION OF FAILURES OF DIESEL GENERATORS 18 AND l A l On March 10,1996, at 1449 EST, DG1B was started for a maintenance run.

1.ouder than normal noises were heard coming from at least one right bank cylinder and the engine was stopped at 1518 EST to investigate. Rocker arm clearances were adjusted and the DG was restarted at 1551 EST and operated successfully.

On March 23,1996, at 1341 EST, DGI A was started for a maintenance run.

Personnel heard a knocking noise coming from a left bank cylinder and the engine was stopped at 1402 EST. Rocker arm clearances were adjusted and the DG was restarted at 1440 EST and operated successfully.

C.

SUMMARY

The DGlB start of March 10,1996, and the DGI A start of March 23,1996, at 1341 EST, have been determined to be non-valid failures because the engines were prematurely shutdown in the course of maintenance activities.

DG1B has had one valid failure in the la.st 20 valid tests and 2 valid failures in the last 100 valid tests. DGI A has had one valid failure in the last 20 valid tests and 3 valid failures in the last 100 valid tests. The test frequency for both DGs remains at once per 31 days in accordance with the requirements of TS table 4.8-1.

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