ML20028F359

Interim Deficiency & Part 21 Repts Re Seismic Qualification Test Failure of Starting Air Check Valves for Emergency Diesel Engine Generator Sets.Initially Reported on 821223. Valves Returned to Manufacturer.Final Rept by 831219

ML20028F359
Person / Time
Site:	Harris
Issue date:	01/21/1983
From:	Parsons R CAROLINA POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
CON-NRC-37, REF-PT21-83 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8302010272
Download: ML20028F359 (3)

Text

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a y Carolina Power & Light Company (;" ,ga g

P. O. Box 101, New Hill, N. C. 27562 o' a 1

January 21, 1983 3 ,a

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Mr. James P. O'Reilly NRC-37 cc United States Nuclear Regulatory Commission * '

Region II 101 Marietta Street, Northwest (Suite 3100)

Atlanta, Georgia 30303 CAROLINA POWER & LIGHT COMPANY gg,, g ,,g

! SHEARON HARRIS NUCLEAR POWER PLANT I 1985 900,000 KW - UNITS 1 & 2 SEISMIC QUALIFICATION TEST FAILURE OF STARTING AIR CHECK VALVES FOR EMERGENCY DIESEL-ENGINE GENERATOR SETS, ITEM 111

Dear Mr. O'Reilly:

Attached is an interim report on the subject which was deemed reportable per the provisions of 10CFR50.55(e).and 10CFR, Part 21, on December 23, 1982.

CP&L is pursuing this matter, and it is currently projected that corrective action and submission of the final report will be accomplished by December 19, 1983.

Thank you for your consideration in this matter.

Very truly yours, y c ;A -

R. M. Parsons Project General Manager RMP/bs Attachment cc: Mr. G. Maxwell (NRC-SHNPP)

Mr. V. Stello (NRC) 8302010272 830121 NCl,1I- Co ..,

PDR ADOCK 05000400 18 A O PM

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i CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLAhT Unit No. 1 1

Interim Report January 20, 1983 4

SEISMIC QUALIFICATION TEST FAILURE OF THE STARTING AIR CHECK VALVES FOR THE EMERGENCY DIESEL-ENGINE GENERATOR SETS l ITEM 111 REFORTABLE UNDER 10CFR50.55(e) MID 10CFR21 1

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SUBJECT:

Shearon llarris Nuclear Power Plant Unit No.1 10CFR50.55(e) and 10CFR21 reportable deficiency. Seismic qualification test failure of these starting air check valves for the emergency diesel-engine generator sets.

ITEM: Starting air check valves (vendor Part No. 74046-146, Item 5252) of the starting air system for the emergency diesel-engine generator sets.

SUPPLIFD BY: Transamerica DeLaval Inc., Oakland, California under CP&L Purchase Order NY-435079.

i NATURE OF DEFICIENCY: In December, 1982 Transamerica DeLaval Inc. notified CP&L of a potential problem with a starting air check valve. This valve is to be installed in the line between the starting air compressor and the starting air storage tanks. This valve functions to allow the air compressor to charge the storage tank and prevent backflow once the tanks are charged.

During Seismic Qualification Testing, one of the starting.

air check valves was found to leak. A valve containing a modified disc assembly has since been seismically tested and accepted.

DATE PROBLEM REPORTED: December 23, 1982, CP&L (L. E. Jones) notified the NRC c

(A. Hardin) that this item is reportable under the provisions of 10CFR50.55(e) and 10CFR21.

SCOPE OF PROBLEM: This problem involves three valves currently stored in the site warehouse.

SAFETY IMPLICATIONS: The emergency diesel-engine generator sets supply on-- _

site power to safety and essential loads in the event of_the loss of both normal on-site and off-site power. Proper-operation of the starting air system is necessary to start the diesels-engine generators. Improper operation could affect the availability of emergency on-site power.

CORRECTIVE ACTION: The three affected valves will be returned to Transamerica~

DeLaval Inc. for modifications. It is currently projected a final report will be submitted by December 19, 1983.