ML20198F590
| ML20198F590 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 10/09/1985 |
| From: | Watson R CAROLINA POWER & LIGHT CO. |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| CON-NRC-394, REF-PT21-85, REF-PT21-85-447-000 217, HO-850466-(O), PT21-85-447, PT21-85-447-000, NUDOCS 8511140387 | |
| Download: ML20198F590 (4) | |
Text
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Cp&L Carolina Power & Light Company
'ih O C i I6 AU dI i
HARRIS NUCLEAR PROJECT P. O. Box 165 NT 0 91985 New Hill, North Carolina 27562 File Number:
SHF/10-13510E NRC-394 O
Letter Number:
HO-850466 (0)
JO 54 Dr. J. Nelson Grace United States Nuclear Regulatory Commission Region II 101 Marietta Street, Northwest (Suite 2900)
Atlanta, Georgia 30323 CAROLINA POWER & LICliT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT 1986 - 900,000 KW - UNIT 1 INSTRUMENT RACKS -
INCORRECT BOLTING MATERIAL, ITEM 217
Dear Dr. Grace:
On September 9, 1985, CP&L notified the NRC of a potentially reportable item per the provisions of 10CFR50.55 (e) and 10CFR, Part 21.
Attached is an interim report on the subject item.
CP&L is pursuing this matter and it is currently projected that we will require until December 16, 1985 to complete testing and report on the reportability of this item.
Thank you for your consideration in this matter.
i Yours very truly, h
8511140387 851009 f
.IA. h _ son ___
l PDR ADOCK 05000400 m
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PDR Vice President l
Shearon Harris Nuclear Power Plant j
(
RAW:jsb Attachment cc: Messrs. C. Maxwell (NRC-SHNPP)
J. M. Taylor (NRC)
NBI-OSI s\\
1897
CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT UNIT 1 FIRST INTERIM REPORT BOLTING MATERIALS USED IN MERCURY INSTRUMENT RACKS ITEM 217 OCTOBER 2, 1985 POTENTIALLY REPORTABLE UNDER 10CFR50.55(e)
AND 10CFR21 IBMD-WKJC01-OS4
SUBJECT:
10CFR50.55(e) and 10CFR21 Potentially Reportable Item Shearon Harris Nuclear Power Plant Unit 1 bolting materials used in Mercury instrument racks.
ITEM:
Safety instrument racks for SHNPP Unit 1.
SUPPLIED BY:
Mercury Company of Norwood, Inc., Erockton, Massachusetts.
NATURE OF DEFICIENCY:
Bolting material used by mercury for seismic instruments do not conform with bolting material recommended by instrument suppliers.
DATE PROBLEM IDENTIFIED:
Shearon Harris personnel identified this problem via NCR 85-1841 on August 23, 1985.
DATE PROBLEM REPORTED:
On September 9,1985, CP&L (Mr. N. J. Chiangi) notified the NRC (Mr. P. Fredrickson) that this item was potentially reportable per the provisions of 10CFR50.55 (e) and 10CFR, Part 21.
SCOPE OF PROBLEM:
Site inspection of instrument racks supplied by Mercury under Purchase Order NY-435134 revealed that bolting materials used to secure instruments to the racks did not conform to material recommended for seismic duty by the instrument suppliers.
In a subsequent letter from Mercury dated September 11, 1985, Mercury stated that counting hardware for the Harris Project was not specified, therefore it was drawn from stock. Mercury has stated that all bolts, studs, u-bolts, and nuts used for mounting this instrumentation are Carbon Steel 306 Grade 2.
Bolting hardware has not been addressed by Mercury in their seismic report submitted for this purchase order.
SAFETY IMPLICATIONS:
Use of inadequate bolting material to secure instruments to the racks could result in these instruments failing during a seismic event.
REASON DEFICIENCY IS POTENTIALLY j
REPORTABLE:
As of this date, CP&L has not confirmed the seismic adequacy of the bolting materials used by Mercury for these racks.
IBMD-WKJC01-OS4
CORRECTIVE ACTION:
Hardware used by Mercury to secure seismic instrumentation to instrument racks is being tested to verify adequacy to support instrumentation based on the seismic profile developed for the Harris site. Should any mounting hardware.' prove inadequate, then this item will be reportable and subject nonconforming hardware will be replaced with appropriate, seismically tested hardware.
1 FINAL REPORT: A final report will be issued once the corrective action 3
described above is completed. This completion is currently anticipated by December 16, 1985.
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