ML20088A721

Sixth Part 21 Deficiency Rept,Item 61 Re Defective Valve Springs Mfg by Transamerica Delaval,Inc (Tdi) on Diesel Engines.Initially Reported on 810828.TDI Removed Defective Springs.Final Rept by 840908

ML20088A721
Person / Time
Site:	Perry, Harris
Issue date:	04/02/1984
From:	Parson R, Parsons R CAROLINA POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
CON-NRC-203, REF-PT21-84-214-000 61, PT21-84-214, PT21-84-214-000, NUDOCS 8404130014
Download: ML20088A721 (4)

Text

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CP&L y gano===

P. O. Box 101, New Hill, N. C. 27b62 April 2,1984 Mr. James P. O'Reilly NRC-203 United States Nuclear Regulatory Commission Region II 101 Marietta Street, Northwest (Suite 2900)

Atlanta, Georgia 30303 ,

CAROLINA POWER & LIGHT COMPANY SHEARON HARRE NUCLEAR POWER PLANT 1986 - 900,000 KW - UNIT 1 DEFECTIVE VALVE SPRINGS ON DIESEL ENGINES, PURCHASE ORDER NY-435079, ITEM 61

Dear Mr. O'Reilly:

Attached is our sixth interim report on the subject item which was deemed reportable per the provisions of 10CFR50.55(e) and 10CFR, Part 21, on August 28, 1981. CP&L is pursuing this matter, and it is currently projected that corrective action and submission of the final report will be accomplished by September 8,1984.

Thank you for your consideration in this matter.

Yours very truly, fg :_ ^ = = +

R. M. Parsons

, Project General Manager Shearon Harris Nuclear Power Plant i

RMP/bk Attachment oc Messrs. G. Maxwcil/R. Prevatte (NRC-SHNPP)

Mr. R. C. DeYoung (NRC)

OFFICIAL COPf' N87 I O!

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l l CAROLINA' POWER & LICHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT i

UNIT NO. 1 i

r SIXTH INTERIM REPORT I

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DEFECTIVE VALVE SPRINGS ON DIESEL GENERATOR ENGINES ITEM NO. 61 (DDR 656) l HARCH 30, 1984 REPORTABLE UNDER 10CFR50.55(e) AND 10CFR21 l-i

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SUBJECT:

Shearon Harris Nuclear Power Plant, Unit No. I 10CFR50.55(c) and 10CFR21, reportable deficiency. Valve springs for emergency diesel-engine generator units purchased from Transamerica DeLaval, Inc. under Purchase Order NY-435079.

ITEM: Intake and exhaust valve springs installed in engine cylinder head assemblies. Total of 128. springs in two

( diesel engines.

s SUPPLIED BY:' Transamerica Delaval, Inc., Oakland, California. Springs manufactured by Melrose Sprirg and Tool Works, Oakland, x California' as subvendor to Transamerica DeLaval.

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NATURE OF '

g DEFICIENCY Transamerica DeLaval, Inc., shipped two diesel engines to the CP&L site on Purchase Order Ny-435079 in May and June, 1981.

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i In August 1981, Transamerica DeLaval advised CP&L that the engines may contain valve springs which were not shot-peened properly. The shot-peening is necessary to

~ relieve external stresses incurred in cold working the spring wire. -The lack of shot-peening could lead to fatigue failure, which then would affect engine p jg availability.

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Telephone conversations with Transamerica DeLaval and a

', visual inspection confirmed that the defective valve springs had been installed in the two engines shipped to N Y the Shearon Harris plant site.

s j',5 d DATE PROBLEM-T 1

OCCURRED:

Refer to section above.

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4 Y l DATE PROBfFJf N" REPORTEDtg August 28, 1981 - CP&L (L. E. Jones) notified the NRC Region II (R. Butcher) that this item was reportable

'- t <"i under 10CFR50.55(e) and 10CFR, Part 21.

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-b SCOPE OF

_The deficiency involves the.two diesel engines shipped on PROBLEM:

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- sPurchase Order NY-435079. LThese engines have defective s'^ valve springs installed.

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s SAFETY IMPLICATON: The dies'el-engine generator units supply power to the ESF buses in case of a loss of both the normal on-site and off-site power sources.

The improper shot-peening of the valve spring could lead to failure of the spring. If the valve spring fails, engine availability could be affected.

REASON DEFICIENCY IS REPORTED: If left uncorrected, failure of the valve spring could result in loss of the emergency on-site AC power supply.

CORRECTIVE ACTION: Although the diesel engines are installed, the Diesel Generator Building is not ready to be cleaned and sealed.

Due to construction schedule slippage, major work in the '

areas around the engines is still in progress. Upon ce=pletion of cicaning and ccaling of the Generator Building, the valve springs will be changed out.

Transamerica DeLaval has removed all defective springs from stock and has taken extra receiving inspection measures to assure this problem does not reoccur.

FINAL REPORT: Due to construction schedule changes, it is cetimated that the installation of the equipment will be completed

. September 8, 1984. A final report is projected to be issued at that time.

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