ML20132D437

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Interim Deficiency Rept DER 85-20 Re Emergency Diesel Generator Cracked Rocker Arm Supplied by Cooper Energy. Initially Reported on 850528.Investigation Incomplete.Next Rept Will Be Submitted by 850901
ML20132D437
Person / Time
Site: Palo Verde  Arizona Public Service icon.png
Issue date: 06/26/1985
From: Van Brunt E
ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To: Kirsch D
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
ANPP-32907-TDS, DER-85-20, NUDOCS 8508010022
Download: ML20132D437 (3)


Text

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RECE!VED HRC Arizona Nuclear Power Project 1985 fdi. -1 FM 12: 28 P.O. 00X 52034

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1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 Attention:

Mr. D. F. Kirsch, Acting Director Division of Reactor Safety and Projects

Subject:

Interim Report - DER 85-20 A 50.55(e) Potentially Reportable Deficiency Relating To Diesel Generatory Cracked Rocker Arm File:

85-019-026; D.4.33.2

Reference:

Telephone Conversation between R. C. Sorensen and P. J.

Coffin on May 28, 1985

Dear Sir:

The NRC was notified of a potentially reportable deficiency in the referenced telephone conversation. At that time, it was estimated that a determination of reportability would be made within thirty (30) days.

Due to the extensive analysis and evaluation required from Cooper Energy, an Interim Report is attached.

It is now expected that this information will be finalized by September 1, 1985, at which time a complete report will be submitted.

Very truly yours,

(

h E. E. Van Brunt, Jr.

Executive Vice President Project Director i

EEVB/TPS/pik Attachment cc:

See Page Two h

1E-J7 a

ANPP-32907-TDS/TPS Mr. D. F.~ Kirsch DER 85-20 Page Two

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Richard DeYoung, Director Office Of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.

20555 D. B. Karner W. E. Ide D. B. Fasnacht A. C. Rogers L. A. Souza D. E. Fowler T. D. Shriver C. N. Russo B.-S. Kaplan J. R. Bynum J.'M.

Allen D. Canady.

A. C. Gehr-W. J. Stubblefield-W. G. Bingham R. L. Patterson R. W. Welcher H. D. Forster D. R. He.wkinson R. P. Zimmerman M. L. Clyde

.B. T. Parker T. J. Bloom D.^N.

Stover J. D. Houchen J. E. Kirby Records Center Institute of Nuclear Power Operations 1100 circle 75 Parkway, Suite 1500 Atlanta, GA 30339 l'

3 INTERIM REPORT - DER 85-20

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POTENTIAL REPORTABLE DEFICIENCY I

ARIZONA NUCLEAR POWER PROJECT PVNGS UNIT 1, 2, 3 I.

POTENTIAL' PROBLEM Unit 2 emergency Diesel Generator, Train B, Tag No. 2MDGBH01, supplied by Cooper Energy, has a broken rocker arm assembly for intake valves on the right bank number five cylinder.

The condition was identified during investigation to determine the source of a sharp metallic noise. coming from the rocker cover assembly when the diesel receives ~a stop signal and is coasting down. To date no other Diesels have experienced this problem.

II.

APPROACH TO AND STATUS OF PROPOSED RESOLUTION Bechtel Engineering is currently corresponding with Cooper Energy to determine reportability and technical justification for corrective action. Cooper energy is awaiting a purchase order, and the materials laboratory report is forecast for completion six weeks after receiving the purchase order.

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III.

PROJECTED COMPLETION OF CORRECTIVE ACTION AND SUBMITTAL OF THE FINAL REPORT The complete. evaluation and Final Report are forecast to be completed by September 1, 1985.

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