ML20091M390
| ML20091M390 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 05/24/1984 |
| From: | Parsons R CAROLINA POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| CON-NRC-220, REF-PT21-84-285-000 (DDR-1255), 111, PT21-84-285, PT21-84-285-000, NUDOCS 8406110279 | |
| Download: ML20091M390 (4) | |
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P. O. Box 101, New Hill, N. C. 27562 May 24,1984 Mr. James P. O'Reilly NRC-220 United States Nuclear Regulatory Commission Region II 101 Marietta Street, Northwest (Suite 2900)
Atlanta, Georgia 30303 CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT 1986 - 900,000 KW - UNIT 1 SEISMIC QUALIFICATION TEST FAILURE OF STARTING AIR CHECK VALVES FOR EMERGENCY DIESEL-ENGINE GENERATOR SETS, ITEM 111
Dear Mr. O'Reilly:
Attached is our fourth interim report on the subject item 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 June 20,1984.
Thank you for your consideration in this matter.
Very truly yours,
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R. M. Parsons Project General Manager Shearon Harris Nuclear Power Plant RMP/sh Attachment ec:
Messrs. G. Maxwell /R. Prevatte (NRC-SHNPP)
- Mr. R. C. DeYoung (NRC)
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CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT UNIT NO. 1 FOURTH INTERIM REPORT MAY 22, 1984 SEISMIC QUALIFICATION TEST FAILURE OF THE STARTING AIR CHECK VALVES FOR THE EMERGENCY DIESEL ENGINE GENERATOR SETS ITEM 111 (DDR-1255).
REPORTABLE UNDER 10CFR50.55(e). AND 10CFR21 s
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SUBJECT:
Shearon Harris 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.
SUPPLIED BY:
Transamerica DeLaval Inc., Oakland, California under CP&L Purchase Order NY-435079.
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 OCCURRED:
Refer to section above.
DATE PROBLEM REPORTED:
December 23, 1982, CP&L (L. E. Jones) notified the NRC (A. Hardin) that this item is reportable under the provisions of 10CFR50.55(e) and 10CFR21.
SCOPE OF PROBLEMI This problem involves three starting air check valves.
REASONS DEFICIENCY IS REPORTABLE:
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 diesel engine generators.
Improper operation could affect the availability of emergency on-site power.
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CORRECTIVE ACTION In February 1984, Transamerica DeLaval, Inc. sent to William Powell Company the three affected valves for modifications. Modified valves are to be returned to CP&L by.May 30, 1984.
. FINAL REPORT It is currently projected a final report will be submitted by June 20, 1984.
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