ML20091M290
| ML20091M290 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 05/22/1984 |
| From: | Tucker H DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| SD-413-84-11, NUDOCS 8406110214 | |
| Download: ML20091M290 (3) | |
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-e DUKE POWER GOMPANY P.O. BOX 33180 CHAltLOTTE, N.C. 28242 HALB. TUCKER TztzPHOME vios raremm (704) 373-453 9g sur Laan enomoovios.
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- y May 22, 1984 Mr. James P. O'Reilly, Regional Administrator U. S. Nuclear Regulatory Ccmuission Region II 101 Marietta Street, NN, Suite 2900 Atlanta, Georgia 30303 Re: Catawba N.1 clear Station Unit 1 Docket No. 50-413
Dear Mr. O'Reilly:
Pursuant to 10 CFR 50.55e, please find attached Significant Deficiency Report No. SD 413/84-11.
Very truly yours,
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kkwC$M soc Hal B. Tucker LTP/php At+ h t cc: Director INPO Records Center Office of Inspection & Enforcenent Suite 1500 U. S. Nuclear Regulatory Caumission 1100 Circle 75 Parkway Washington, D. C. 20555 Atlanta, Georgia 30339 NRC Re;ident Inspector
}tc. Robert Guild, Esq.
Catawba Nuclear Station Attorney-at-law P. O. Box 12097 Palmetto Alliance Charleston,. South Carolina 29412
'l 2135 Devine Street.
Coluubia, South Carolina 29205 Mr. Jesse L. Riley Carolina Environnental Study Group 854 Henley Place Charlotte, North Carolina 28207 B406110214 840522 viCig,COPT PDR ADOCK 05000413
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Page 1 of 2 REPORP NO:
SD 413/84-11 REPORP DATE:
May 22, 1984 FACILITY:
Catawba Nuclear Station Unit 1 IDENTIFICATION OF DEFICIENCY:
Welding inspection revealed discrepancies between fabrication drawings and equipment. Deficiency was identified by Ibnconforrrdng Its 18132.
INITIAL REPORT:
On April 24, 1984, A. Ignatonis, NRC Region II, Atlanta, Georgia was notified of the deficiency by W. O. Henry and T. L. Utterback of Duke Power Ocrupany, Charlotte, North Carolina.
COMPONENT AND SUPPLIER:
Air Handling Units (2) fabricated by Bahnson Service Ompany (BSCo.), Winston-Salem, North Carolina.
DESCRIPTION OF DEFICIENCY:
As reported by ICIR 18132, a site inspection of air handling units fabricated by BSOo. revealed welding discrepancies documented in Bahnson Report BSC-W-289 dated March 2, 1984. Discrepancies included deviation fr m fabri-cation drawings and poor workmanship. Rejecticn was based on APE Dl.1 code requirements and BSCo. Inspection Procedures.
Welding probles were not discovered du-ing shop inspection in violation of BSCo.'s QA program. 'Ihese deficiencies were not identified by Duke Power prior to installation of the equipment.
Similar Bahnson equipuent at another Duke location was also inspected. Minor welding discrepancies were identified. Discrepancies inclel overlap, con-vexity, weld spatter, considered cosractic in nature, and one weld is being evaluated for lack of fusion.
ANALYSIS OF SAEETY IMPLICK" IONS:
If the welding deficiencies had remained un3etected, the equipnent could have failed to perform its intended control cottplex cooling function during/after a seismic event.
CCRRECTIVE ACTIW:
BSCo. equipnent was analyzed to determine if such failure modes existed.
None was found. Engineering has accepted the equipment "as-is".
Pepair work was not required and rune was rammended. All doc uentation is on file with the acepleted NCIP..
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Page 2 of 2 o
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Generic irdustry concerns have been addressed in NBC IE Information Notice No. 84-30 dated April 18, 1984.
.Evaluatim of similar equiptent is in progress. Evaluation will be ampleted
-by June 29, 1984.
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