ML20092A577
| ML20092A577 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 04/26/1984 |
| From: | Parsons R CAROLINA POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| CON-NRC-214 103, NUDOCS 8406190273 | |
| Download: ML20092A577 (4) | |
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P' Carolina Power & Light Company 3
Pl2 t} tl P. O. Box 101, New Hill, N. C. 27562 April 26,1934 Mr. James P. O'Reilly NRC-214 United States Nuclear Regulatory Commission Region II -
- 101 Marietta Street, Northwest (Suite 2900)
Atlanta, Georgia 30303
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. CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT
= 1986 - 900,000 KW - UNIT 1 MAIN CONTROL BOARD WELD DEFICIENCIES, i
~ PURCHASE ORDER NY-435002, ITEM 103
Dear Mr. O'Reilly:
Attached is the final report on the subject item which was deemed reportable per the provisions of 10CFR50.55(e), on March 10,1983. With this report, Carolina Power & Light Company considers this matter closed. -
L If you heve any questions regarding this matter, please do not hesitate to contact me.-
Yours very truly, f/f W i
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R. M. Parsons Project General Manager Shearon Harris Nuclear Power Plant RMP/sh
- Attachment I-ec: ' Messrs. G. Maxwell /R. Prevatte (NRC-SHNPP)
Mr. R. C. DeYoung (NRC) 0 O
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CAROLINA PO ER &. LIGHT COMPANY W
SUFARON HARRIS NUCLEAR POWER PLANT z
UNIT 1 m
FINAL REPORT
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. MAIN CONTROL BOARD WELD DEFICIENCIES ITFM 103
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-APRIL 17, 1984
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REPORTABLE' UNDER 10CFR50.55(e) -
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SUBJECT:
Shearon Harris Nuclear Power Plant, Unit 1, 10C FR50. 55 (e)
Reportable Deficiency in the Main Control Board (MCB) supplied under Purchase Order NY-435002, Westinghouse Shop Order 395 ITEM:
Structural Weiding
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SUPPLIED BY:
Westinghouse Electric Corporation, Orville, Ohio s
NATURE OF DEFICIENCY:
The subject Unit 1 equipment has been received at the
- site, r
During a CP&L site QA inspection of the equipment, weld deficiencies were noted when compared to the vendor's welding criteria.
DATE PROBLEM OCCUR RED :
The problem was noted by CP&L site OA inspection on S ep tembe r 30, 1982.
DATE PPOBLEM R EPORTED:
October 14, 1982, CP&L (N. J. Chiangi) notified the NRC (Mr. C. Hehl) that this item was potentially reportable under 10CFR50.55(e).
March 10, 1983 - CP&L (N. J. Chiangi) notified the NRC (Mr. C. Hehl) that this item was reportable under 10CFR50.55(e).
1 SCOPE OF h
PROBLEM:
The deficiency involves all sections (A, P, C, D) of the MCB.
The board is fabricated in sections only due to f
physical limitations of handling and shipping. When installed, it becomes a single unit.
$1 SAFETY IMPLICATIONS:
Seismic qualification of the MCB is required to assure structural integrity during a seismic event.
Safety-
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reinted components are located in the board; thus, a
structural failure of the board would jeopardize operation p
of the safety-rela ted equipment.
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, R EASONS DEFICIENCY IS REPORTABLE:
During initial site inspection, several welds were
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identified,as missing or possibly needing repair.
Further inepection insing vendor weld criteria determined that six (6) welds should be added -or repaired.
CORRECTIVE
' ~ ACTION:
.The identified deficient welding has been repaired and inspected.by the vendor on site.
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' The ~ vendor has ' performed a seismic qualification analysis using design criteria to which the MCB was built.
' FINAL REPORT: ' A final report of. the vendor's seismic analysis has just been completed and issued for review. CP&L has reviewed the analysis and found it to be satisfactory.
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