ML20081K234
| ML20081K234 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 10/28/1983 |
| From: | Tucker H DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, SD-413-414-83-1, NUDOCS 8311090311 | |
| Download: ML20081K234 (2) | |
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DUKE POWER GOMPANY P.O. BOX 33180 CHARLOTTE, N.C. 28242 HAL B. TUCKER TEs.EPHONE W3CE ParstDENT (704) 373-4331
" " " " ~ " * " " "
Octobe 1983 Mr. James P. O'Reilly, Regional Administrator U. S. Nuclear Regulatory Commission Region ll 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30303 Re:
Catawba Nuclear Station Units I and 2 Docket Nos. 50-413 and 50-414
Dear Mr. O'Reilly:
Pursuant to 10 CFR 50.55e, please find attached Significant Deficiency Report SD 413-414/83-13 Very truly yours, P&
Hal B. Tucker LTP/php Attachment cc:
Director INP0 Records Center Office of Inspection and Enforcement Suite 1500 U. S. Nuclear Regulatory Commission 1100 Circle 75 Parkway Washington, D. C. 20555 Atlanta, Georgia 30339 NRC Resident inspector Mr. Robert Guild, Esq.
Catawba Nuclear Station Attorney-at-Law P.O. Box 12097 l
Palmetto Alliance Charleston, South Carolina 29412 2135t Devine Street Columbia, South Carolina 29205 I
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GFFICI AL N$fi'c 9 27 8311090311 831028 PDR ADOCK 05000414 S
JP0/HBT/LTP October 28, 1983 Catawba Nuclear Station Report Number: SD 413-414/83-13 Report Date: October 28, 1983 Facility:
Catawba Nuclear Station, Units 1 and 2 Identification of Deficiency:
Wiring revisions were signed off as complete, when later checks revealed that some problems existed with those panels. This was discovered during routine inspections of later revisions.
Several panels were found to be not in accordance with the revision that was signed of f.
Both Construction and Quality Control inspection had signed off revisions as complete, per CP-147 A complete evaluation revealed that only one of the seventeen items identified by Non-Conforming item 17063 is reportable.
Initial Report:
On September 28, 1983, V. Brownlee and G. Nejfelt, NRC Region 11, Atlanta, Georgia were notified of the deficiency by L. Coggins, S. H. Van Halssen, J. Rowell of Duke Power Company, Charlotte, North Carolina.
Component and/or Supplier:
Fabricated by Duke Power Company, Catawba Nuclear Station.
No component deficiency exists.
Description of Deficiency:
A jumper was installed in 2EATC15 from relay JC (40DX) contact la to relay JA (51VX2) contact la.
A revision to the wire tabulation sheet deleted this jumper. When this revision was completed, the Jumper was inadvertently lef t in the panel. The quality Control inspection of the panel failed to notice that the jumper had not been removed. This connection reduces the two (2) out of three (3) logic of the 51V protective relay scheme to one (1) out of three (3) (less conservative di rection).
Analysis of Safety implications:
The tripping function of these relays is in effect during safety actuation.
Therefore, if the connection between JC (40DX) contact la and JA(51VX2) contact la is left as is, this would result in system operation that is different from that described in FSAR commitments.
Corrective Action:
Specific items addressed in NC1 17063 will be corrected prior to fuel loading.
Training of personnel involved will be conducted to prevent problems of this type from happening again. A complete reinspection of all panels will be conducted prior to final turnover of the system.