ML20092A209

Significant Deficiency Rept Re Damaged Oil Seals & Thrust Bearings in Turbochargers Mfg by Elliott.Initially Reported on 840327.Turbochargers Rebuilt.Corrective Actions Will Be Completed by 840702

ML20092A209
Person / Time
Site:	Catawba
Issue date:	04/26/1984
From:	Tucker H DUKE POWER CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
NUDOCS 8406190090
Download: ML20092A209 (2)

Text

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Duxn POWER GOMPAhT P.O. HOX 33180 CIIARLOTTE, N.C. 28242 II.M.B.]KER TELEPHONE April 26,1984 3

Pl2 : 4 5 Mr. James P. O'Reilly, Regional Administrator U. S. Nuclear Regulatory Commission

- Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30303

~ Re: Catawba Nuclear Station Units 1 and 2 Docket Nos. 50-413 and 50-414

Dear Mr. 0'Reilly:

Pursuant to 10 CFR 50.55e, please find attached Significant Deficiency Report No. SD 413-414/84-05.

Very truly yours, 1/s. wLyg Hal B. Tucker LTP/php Attachment cc: Director INP0 Records Center Office of Inspection & Enforcement Suite 1500 U. S. Nuclear Regulatory Commission 1100 Circle 75 Parkway Washington, D._C. 20555 Atlanta, Georgia 30339 NRC Resident Inspector Mr., Robert Guild, Esq.

Catawba Nuclear Station Attorney-at-Law P.O. Box 12097 Palmetto Alliance Charleston, South Carolina 29412 21351 Devine Street Columbia, South Carolina 29205 4

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e, Catawba Nuclear Station Report Number:

SD 413-414/84-05 Report Date:

April 26,1984 Facility:

Catawba Nuclear Station Units 1 & 2 Identification of Deficiency:

Damaged oil seals and thrust bearings were found in three of the turbochargers used on the Catawba 1A and IB diesels. Deficiency identified February 24, 1984.

Initial Report:

On March 27, 1984, Mr Al Ignatonis of the NRC, Region II, Atlanta, Georgia office, was notified of this deficiency by Mr L M Coggins, Mr J D Heffner, Mr J P Voglewede and Mr R D Carroll of Duke Power Company, Charlotte, NC 28242 SuDplier and/Or Component Transamerica Delaval Inc. of Oakland, California, supplied the turbochargers as part of the diesel generator package. The turbochargers were manufactured by Elliott (United Technologies /Elliott Corporation).

Description of Deficiency:

Three turbochargers on the 1A and 1B Catawba diesels were found to have damaged oil seals and thrust bearings.

The deficiency was discovered during preoper.ational testing of the diesels.

Investigations indicate the cause of failure to be insufficient lubrication to the turbocharger thrust bearings. The insufficient lubrication only occurs during a fast start of the engine after a prolonged period in the standby mode.

Analysis of Safe _ty Implications:

A failed turbocharger would not compromise the operability of a diesel engine in an emergency situation.

Corrective Action:

The turbochargers have been rebuilt and are being returned to the site.

Transamerica Delaval has provided a recommended correction which is presently being reviewed by Duke Power Company.

Resolution and corrective action are expected to be complete by July 2, 1984.

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