ML20096F473
| ML20096F473 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 08/16/1984 |
| From: | Parsons R CAROLINA POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| CON-NRC-255, REF-PT21-84-493-000 111, DDR-1255, ODID, PT21-84-493, PT21-84-493-000, NUDOCS 8409100044 | |
| Download: ML20096F473 (4) | |
Text
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- c CD&L Carolina Power & Light Company U
P. O.
C. 27562 August 16,-1984' Mr. James P. O'Reilly NRC-255 United States Nuclear Regulatory Commission Region II 101-Marietta Street, Northwest (Suite 2900)
Atlanta, Georgia 30323.
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 final report on the subject item which was deemed reportable per the provisions of 10CFR50.55(e) and 10CFR, Part 21, on December 23, 1982. ' With this report, Carolina Power & Light Company considers this matter closed.
If you have any questions regarding this matter, please do not hesitate to contact me.
Very truly yours, fp>yf W: &
R. M. Parsons Project General Manager Shearon Harris Nuclear Power Plant RMP/ jam Attachment cc: Messrs. G. Maxwell /R. Prevatte (NRC-SHNPP)
Mr. R. C. DeYoung (NRC) l B409100044 840816 I
PDR ADOCK 05000400 i
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CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT UNIT NO. 1 FINAL REPORT AUGUST 17, 1984 SEISMIC QUALIFICATION TEST FAILURE OF THE STARTING AIR CHECK VALVES FOR THE EMERGENCY DIESEL ENGINE GENERATOR SETS ITEM 111 i'
(DDR-1255).
REPORTABLE UNDER 10CFR50.55(e) AND 10CFR21 l
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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 the 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.
f2 NATURE OF
. DEFICIENCY:
In' December, 1982, Transamerica DeLaval, Inc., notified b~
-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 PROBLEM:
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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- e CORRECTIVE
- ACTION:
In February 1984, Transamerica DeLaval, Inc. sent to'-
William Powell Company the three affected valves for
. modifications. Modified valves'were returned to CP&L June 12, 1984. The modified check valves have been
. installed.
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