ML20009F539

Interim Deficiency Rept 1 Re Transamerica Delaval Diesel Generator Turbocharger Thrust Bearings.Initially Reported on 810130.Util Awaiting Vendor Action.Part 21 Considered Applicable.Final Rept Will Be Submitted by 810714

ML20009F539
Person / Time
Site:	Hartsville, Phipps Bend
Issue date:	03/03/1981
From:	Mills L TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21- 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8107310281
Download: ML20009F539 (2)

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TENNESSEE VALLEY AUTHORITY [ OFFICIAL COPI 3/- C&& - 03 h CH A TTANOCG A. TEN N ESS E E 37-+G1 g,p g,4 /

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March 3, 1981 HTRD 50-518, -519. -520. -521/81-06 g(\

PBRD 50-553/81-07, -554/81-05 '89 /9 Mr. James P. O'Reilly, Director

$ 6i0/[0%,

,h Mt wd(k l.0 ' I k i5S s Office of Inspection and Enforcement U.S. Nuclear Regulatory Coumission Region II - Suite 3100

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101 Marietta Street j Atlanta, Georgia 30303 Id j

Dear Mr. O'Reilly:

HARTSVILLE 1.ND FHIPPS BEND NUCLEAR PLANTS - REPORTABLE DEFICIENCY -

TRANSAMERICA DELAVAL DIESEL GENERATOR TURBOCHARGER THRUST BEARINGS (HTRD-50-518, -519. -520, -521/81-06, PBRD-50-553/81-07,

-554/81-05)

The subject G ficiency was initially reported to NRC-0IE, Region II, '

Inspector h. W. Wright en January 30, 1981, as NCR's HTA MEB 81-02, HTB MEB 81-02, and PBN MEB 81-01. In compliance with paragraph 50.55(e) of 10 CFR Part 50, we are enclosing the first interim report on the subject deficiency. We consider 10 CFR Part 21 applicable to this nonconformance. TVA anticipates transmitting the final report on or before July 14, 1981. If you have any questions, please call Jim Domer at FTS 857-2014 Very truly yours, TENNESSEE VALLEY AUTHORITY

. M.. ills, Ma, nager

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Nuclear Regulation and Safety Enclosure cc: Mr. Victor Stello, Director (Enclosure)

Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission .

Washington, DC 20555 b

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8107310281 810303 PDR ADOCK 05000518 PDR g . . , , w . . g ., , , , ,n

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i ENCLOSURE HARTSVILLE AND PHIPPS BEND NUCLEAR PLANTS TRANSAMERICA DELAVAL DIESEL GENERATOR TURBOCilARGER THRUST BEARINGS

! 10 CFR PART 50.55(e)

HTRD-50-518, -519, -520 -521/81-06 l

PBRD-50-553/81-07, -554/81 --

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REPORT NO. 1 (INTERIM) i i

i Descriotion of Deficiency Transamerica Deleval (TDC) has notified the NRC (letter dated December 16, 1980) of a potential defect in the standby diesel

generators that TDC has supplied to TVA. The potential defect exists in the lubrication oil system that supplies oil to the turbocharger bearings.

The oil seal of the turbor*trger is a labyrinth type seal which is only effective when the turbocharger is in operation. Because of

, the possi'oility of seal leakage when the turbocharger is at rest l (engine standby mode), turbocharger thrust bearings may be-prematurely worn.

4 Interin Progress TVA is awaiting Transamerica Delaval action to address the subject deficiency.

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