ML20206E823

Special Rept:On 881013,during Troubleshooting of Diesel Generator Train A,Mvar Meter Was Reading Offscale High. Investigation Showed That Rewiring Led to Meter Malfunction. Wiring Corrected

ML20206E823
Person / Time
Site:	Vogtle
Issue date:	11/14/1988
From:	Hairston W GEORGIA POWER CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
VL-00144, VL-144, NUDOCS 8811180212
Download: ML20206E823 (2)

Text

. _ _ _ _ _ _ _ _ _ _ . _____ __

cery ru.s en ,

. .o m r . m 4.c n u ce n : , ,

• > 'j L 9 , : 9 4,4 ?. ; k * * ,

in an l '. } ( " < a l! s 4 ' V

/* r"4 Ge , ; a ? ^ ,

W G. Haastom, ill ,,, ,

t. , s a. r m ..

r, . r cu .

YL-00144 NON-00427 07540 -

X7CJ17-Y310 November 14, 1988 U. 3. Nuclear Regulatory Commission ATTN: Document Control Oesk Washington, D. C. 20555 PLANT V0GTLE - UNIT 1 NRC DWKET 50-424 OPERATING LICENSE NPF-68 SPECIAL REPORT INVALID DIESEL GENERATOR FAILURE Gentlemen:

In accordance wi'.h tM equirerents of the Plant Yogtle - Unit ' Technical Specification sectiont 4.8.1.1.3 and 6.8.2, Georgia Power Company is submitting the enclosed Special Report concerning an invalid diesel generator failure.

Sincerely, ,

J.//4 * "

W. G. Hairston, !!!

Enclosure:

Special Report 88-006  ;

l 1

c: Georgia Power Company Mr. P. D. Rice Mr. G. Bockhold, Jr.

I Hr. M. Sheibe.ni Hr. J. P. Kane GO-NORMS Yogtit-NORMS U. S. Nuclear Regulatory Comission Mr. M. L. Ernst, Regional Ad:ntnf strator Mr. J. B. Hopkins, Licensing Project Manager, NRR (2 copies)

Mr. J. F. Rogge, Senior Resident Inspector-Operations, Vogtle

/

8911180210 831114 e i

PDR f4 DOCK 05000424 I I S FDC i

. ~s Georgi iRnver d ENCLOSURE PLANT YOGTLc . UNIT 1 WRC DOCKET 50-424 '

OPERATING LICENSE NPF-69 TECHNICAL SPECIFlf.ATION SPECIAL REPORT 88-006  ;

i A Requirement for Report [

Yhis report is reqvtred in accordance with Plant Vogtle Unit 1 Technical Specifications Section 4.8.1.1.3. This section of the Technical Specifications requires that all diesel generator failures, valid or non-valid, be reported to the Coresission in a Special Report pursuant to Technical Specification 6.8.2.

B. Description of Invalid Failure for Train A Diesel Generator On October 13, 1988, a troubleshonting run (Start Number 1-88-0008) of Diesel Generator Train A was in p ogress to set the lubc oil regulating valves, make final inspectiens, and perform functional testing following maintenance. The operator noticed that the R/AR meter was reading offscale high. The engine was unloaded and stopped. The cause of the high meter reading was not immediately known. However, since all other engine operating parameters were within tolerance Start Number 1-88-0089 was conducted successfully and proved o>erability. An investigation later showed that rewiring conducted during tte mairtenance led to the meter mal function. The improper wiring was corrected.

C. Summary This non-valid failure p(r Reg. Guide 1.108, Section C.2.E.7, did not affect the diesels emergency response capability.

l Since there are no valid failures in the past 20 valid tests, the Train A l Diesel Generator is still on a once per 31 day test frequency as defined by Techrical Specification Table 4.8.1. '

l

>:- - '---,-m- - . _ _ . - . . .._ _ --. _ -.-_. . % _

_.,_~g, _ . , - , , _