ML20027D681

Third Interim Deficiency Rept Re Defective Valve Springs on Diesel Engines Mfg by Transamerica Delaval.Initially Reported on 820828.Valve Springs Will Be Replaced.Also Reportable Per Part 21

ML20027D681
Person / Time
Site:	Harris
Issue date:	10/29/1982
From:	Parsons R CAROLINA POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21-82 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8211080238
Download: ML20027D681 (4)

Text

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. s-CD&L Carolina Power & Light Company P. O. Box 101, New Hill, N. C. 27562 October 29, 1982 Mr. James P. O'Reilly NRC-19 United States Nuclear Regulatory Commission Region II 101 Marietta Street,. Northwest (Suite 3100) o '

Atlanta, Georgia 30303 1 '

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CAROLINA POWER & LIGHT COMPANY < $3 SHEARON HARRIS NUCLEAR POWER PLANT N dO 1985 900,000 KW - UNITS 1 & 2 l' m DEFECTIVE VALVE SPRINGS ON DIESEL ENGINES 11 n l' PURCHASE ORDER NY-435079, ITEM 61 ,f ~i Deat Mr. O'Reilly:

Attached is our third 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. As stated in the attached report, it is currently projected that corrective action and submission of the final report will be submitted by July 15, 1983.

Yours very truly, M ;f. ; L R. M. Parsons Project General Manager Shearon Harris Nuclear Power Plant i

RMP/sh Attachment cc: Mr. G. Maxwell (NRC-SHNPP)

Mr. V. Stello (NRC)

~~ OFnCIAL COPY 8211080238 821029

~ PDR ADOCK 05000400 S PDR Zg

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CAROLINA PO'fER & LIGHT COMPANY SHEARON HARRIS NUCLEAR PO!iER PLANT I

UNIT NO.-1.

. INTERIM REPORT October 27,'1982 i~

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)- Reportable Under 10CFR50.55(e)

, Reportable Under 10CFR21 l

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SUBJECT:

Shearon Harris Nuclear Power Plant / Unit No. 1 10CFR50.55(e) and 10CFR21, reportable deficiency. Valve springs for emergency diesel engine-generator sets purchased under Purchase Order NY-435079 from Transamerica DeLaval, Inc.

e ITDI: Intake and exhaust valve springs installed in engine ~

cylinder head. assemblies. Total of 128 springs in two diesel engines. -

SUPPLIED '

N BY: Transamerica DeLaval, Inc., Oakland, California. Springh5 manufactured by Melrose Spring and Tool Works, Oakland, California, as subvendor to Transamerica DeLaval.

NATURE OF -

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

June 1981. '~,

In August 1981, Transamerica DeLaval advised CP&L that '

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the engines may contain valve springs which were not shot-peened pr perly. The shot-peening is necessary ty" ,

relieve external stresses incurred in cold-working the spring wire. The lack of shot-peening could lead to j _ js fatigue failure, which then vould affect engine availability. z-

,s Telephone conversations with TransamerAca DeLaval and a "

visual inspection confirmed that the defectivo valve

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springs had been installed in the two engines shipped to ,

the Shearon Harris plant site. by DATE PROBLDI N ,

OCCURRED: Refer to section above. u DATE RPOBLDI

• REPORTED: August 28, 1981 - CP&L (L. E. Jones) notified the NRC, Region II, (R. Butcher) that this item was reportable under 10CFR50.55(e) and 10CFR, Part 21.

SCOPE OF PROBLEM: The deficiency involves the two diesel engines shipped on s Purchase Order NY-435079. These engines have defective 4 valve springs installed.

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. i SAFETY IMPLICATION: The diesel engine-generator sets' supply power to the ESF buses in cass'of a loss of both the normal on-site and offsite power sources.

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's The improper sh.ctpeening of the valve spring could lead to failure of the spring. If the valve spring fails, engine availability could be affected.

.. REASON *

[~ DEFIQIENCY IS '

• .y REPORTABLE: ,If leftsuqporrected, failure of the valve spring could

.sesult, in loss ,of the emergency on-site AC power supply.

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10FRECTIVE ^'

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CTION: .-' The diesel enginbl~have been p1 iced on " hold" at the

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Sheafon Hattis siEE. The valve springs will be replaced

.s when the engines are installed on their foundations.

- Valve spring changeout requires the ability to bar the

' engine over, 1thich cannot be accompliuhed unit the engine

~, is sitting on l' ' "ndation with the flywheel installed.

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The, engines ar nely in storage and are expected to be set on thet sandations in November,1982.

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 delays, a final report cannot be issued at this

, time because the engines have not yet been installed on their foundations as was previously expected.

r A final report will be issued once thy corrective action U" de scribed above has been completed. It is currently projected that the submittal date will be July 15, 1983.

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