ML20009H401

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First Interim Deficiency Rept Re Potential Defect in Component of Standby Diesel Generator Engine,Originally Reported on 810630.Delaval Will Perform Required Insp & Repair at Site.Also Reportable Per Part 21
ML20009H401
Person / Time
Site: Phipps Bend Tennessee Valley Authority icon.png
Issue date: 07/31/1981
From: Mills L
TENNESSEE VALLEY AUTHORITY
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21-81 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8108100067
Download: ML20009H401 (2)


Text

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TENNESSEE VALLEY SUTH.O.RITY CH ATTANOOGA. TENNESSEE 374of; '

400 Chestnut Street. Tower II 5 ,,

July 3i, 1981 5y 5

PBRD-50-554 /81-10 -

g Mr. James P. O'Reilly, Director I Office of Inspection and Enforcement ) '. G 0 7198N .

.gU U.S. Nuclear Regulatory Commission g Region II - Suite 3100 101 Marietta Street '\"kA(h

/

Atlanta, Georgia 30303 s

Dear Mr. O'Reilly:

PHIPPS BEND NUCLEAR PLANT UNIT 2 - REPORTABLE DEFICIENCY - DIESEL ENGINE OIL PLUGS - PBRD-50-554/81-10 The subject deficiency was initially reported to NRC-CIE, Region II, Inspector Pete Taylor on June 30, 1981 as NCR PBN MEB 81-02. In compliance with paragraph 50.55(e) of 10 CFR Part 50, we are enclosing the first interim report on the subject deficiency. TVA anticipates transmitting the next report on or before October 15, 1981. We consider 10 CFR Part 21 applicable to this nonconformance.

If you have any questions, please call Jim Domer at FTS 857-2014.

Very truly yours, TENNESSEE VALLEY AUTHORITY O L. M. Mi Is, Manager Nuclear R ulation a Safety Enclosure cc: Mr. Victor Stello, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 rn9Y s ,t, 8108100067 810731 PDR ADOCK 05000554 S PDR An Equal Opportunity Employer l

- I ENCLOSURE PHIPPS BEND NUCLEAR PLANT DIESEL ENGINE OIL PLUGS PBRD-50-554/81-10

___ 10CFR50.55(e)

REPORT NO. 1 (INTERIM)

On June 30, 1981 TVA informed NRC-OIE, Region II, Inspector Pete Taylor of a potentially reportable condition under 10CFR50.55(e) regarding diesel engine oil plugs. The vendor, Transamerica Delaval, notified NRC of this condition in a letter dated June 3, 1981 pursuant to the requirements of 10 CFR 21. This is the first interim report on this deficiency. We expect to supply you with our next' report by October 15, 1981.

neseription of Deficiency Transamerica Delaval, Incorporated, Oakland, California, informed TVA of a potential defect in a component of a standby diesel generator engine which was supplied to Phipps Bend Nuclear Plant unit 2. This deficiency applies only to one engine (serial number 77034-2932). This engine was shipped in May 1981.

There exists a potential problem with oil plugs which seal oil passages drilled in the crank shaft. The potential defect was caused by improper installation. This plug'is rolled into the crankshaft using an expansion tool. The plug is a slight drive fit in the crankshaft. It was driven into the shaft using a steel tool. - The tool used on this engine was-undersized. The mechanic used excessive force during installation, causing an upset on the bottom of the plug. This. upset could lead to_

~- -~

~~~ failure of the plug. ~ _

Corrective Action The existence of the upset can be determined by visual inspection.

l Transamerica Delaval will perform the required inspection and repair at the site. To prevent recurrence of this problem, a new hardwood driver is now used by Transamerica Delaval.

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