ELV-02165, Special Rept 2-90-03:on 900914,invalid Diesel Generator Failure Occurred Due to Crack in Fuel Line Tubing.New Tubing Installed & Bent Appropriately

Special Rept 2-90-03:on 900914,invalid Diesel Generator Failure Occurred Due to Crack in Fuel Line Tubing.New Tubing Installed & Bent Appropriately

ML20065G769
Person / Time
Site:	Vogtle
Issue date:	10/15/1990
From:	Hairston W GEORGIA POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
2-90-03, 2-90-3, ELV-02165, ELV-2165, NUDOCS 9010230167
Download: ML20065G769 (2)

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. Georgia Poor Cornpany.

"... 333 Piodmort Avenue

. Attanta GeorD'a 30308

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. Telephone 404 526 3195 ~]

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. Mgng Address 40 inverness Contor Parkway Post Office Box 1295 B,rmingharn, Alabama 35201 Telephone 205 868 5581  ;^

!' the soutten Actnc sprem '

W. G, Hairston, lli Servor Vice Prevdent nuciear operatons 's October 15, 1990 ELV-02165- ,

0647 Docket No. 50-425 U. S. Nuclear Regulatory Commission '

ATTN: Document Control Desk.

Washington, D. C. 20555  ;

Gentlemen:

V0GTLE ELECTRIC. GENERATING PLANT'

.SPECIAL REPORT -i '

INVALID DIESEL GENERATOR FAILURE In accordance with the requirements of the Vogtle Electric Generating Plan't Technical Specifications, Sections 4.8.1.1.3; and .6.8.2, Georgia Power Company.

hereby submits the enclosed SpecialiReport concerning ant invalid. diesel ';

generator failure.

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Sincerely,.

k) #

W. G. Hairston, III WGH,III/NJS/gm j

Enclosure:

Special Report 2-90-03 xc:- Georaia Power Comoany Mr. C. K. McCoy Mr. G. Bockhold, Jr.

Mr. P. D. Rushton 3 l l Mr. R. M. Odom

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NORMS ,

.'1 L U. S. Nuclear Reaulatory Commission

(. Mr. S. D. Ebneter,4 Regional Administrator .

J Mr. D. S. Hood, Licensing Project Manager, NRR- R L Mr. B. R. Bonser, Senior Resident Inspector, Vogtle-g >

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ENCLOSURE-l V0GTLE ELECTRIC GENERATING PLANT - UNIT 1 1 TECHNICAL SPECIFICATION SPECIAL REPORT 2-90-03 i INVALID DIESEL GENERATOR FAILURE- )

1 A. REQUIREMENT FOR REPORT This report is required in accordance with.the~ Vogtle Electric Generating l

Plant Technical Specifications, Section 4.8.1.1.3. This section of the l Technical Specifications requires.that all diesel: generator failures, valid or non-valid, be reported to the Commission in- a Special Report -

pursuant to Technical Specification 6.8.2. j B. DESCRIPTION OF INVALID FAILURE OF DIESEL GENERATOR:(DG) 2B' L

On 9-14-90 at 2330 CDT, DG 2B was started to perform .a Hot Web Deflection Test-in order to obtain thermodynamic performance' data prior to its scheduled overhaul. At 0410 CDT on 9-15-90, a fuel-line was.found ta be leaking and a conservative decision was made to stop,the-test and i investigate the leak. At 0412 CDT, the DG was stopped and a. Limiting Contiition for Operation.was entered. -Personnel found that the fuel line i tubing was mounted at an angle through one ofEits, supports and had cracked where it made contact with an edge of the' support.. A temporary-repair was made and the testing was completed. 2Dur,ing the-ensuing-overhaul, new tubing was installed which was' bentfappropriately as it: ,

passed through its support mounting to preventaa' recurrence of the '

cracked line. A check of the other DG ' fuel lines found no other. similar- .;

conditions. Following the overhaul, the DG1was_ returned to service on. .i 9-25-90 at 1000 CDT.

C. SUPfiARY This event is classified as an invalid failure per Regulatory Guide 1.108, Section C.2.e. There'have been a total of 37' valid tests of DG 28 and no valid failures. The test frequency for DG 2B remains at once per 31 days in accordance with Table 4.8-1 of the Technical; Specifications.

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