ML20091A655
| ML20091A655 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 03/26/1992 |
| From: | William Cahill TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| TXX-92156, NUDOCS 9203300099 | |
| Download: ML20091A655 (3) | |
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- TXX-92156 File # 10130 1R 92-04
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Ref.
- 10CFR2.201 TUELECTR.'C March 26, 1992 William J. Cahill, Jr.
Gnup %cr Presialent U. S. Nuclear Regulatory Commission Attn: vocument Control Desk Washington, DC ?0555
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES) - UNIT 1 DOCKET NO. 50-445 NRC I V ECTION REPORT NOS. 50-445/92-04; 50-446/92-04 RESPONSt TO NOTICE Of VIOLATION Gentlemei TU Electric has reviewed the NRC's letter dated February 25, 1992, concerning the inspection conducted by the NRC staff during the period January 21-24 and February 10-11, 1992.
This inspection covered activities authorized by NRC Operating License NPF-87 ara Construction Permit CPPR-127.
Attached to the February 25, 1992, letter was a Notice of Violdtion.
TU Electric hereby responds to the h; tice of Violation (445/9204-01) in the attachment to this letter Sincerely,
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4, William J. Cahill, Jr/
JET /.*
Attatnments c - Mr. R. D. Martin, Region IV Mr. L. A. Yandell, Region IV Mr. T. A. Bergman, NRR Resident Inspectors, CPSES (2) fo\\
iJ v20tacco99 920326 I
gDR ADOCK 0500o445 d
P.O. Box 1002 Glen Rose, Te.as 7604Ll002 PDR
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Attachment I to TXX-92156 Page'l of 2 Notice of Violation (445/9204-01)
Criterion V of Appendix B to 10 CFR Part 50 and the licensee's approved quality assurance program description require that activities affecting quality be accomplished in accordance wi'" procedures.
ASME Code Section XI, Appendix 111-4430 and the Procedure TX-ISI-207, " Ultrasonic Examination of Similar and Dissimilar Metal Welds in Austenitic Stainless Steel Piping Systems for Comanche Peak Units No. 1 & 2," Revision 0 w1th Field Change Notice Nos. 1 through 3, paragraph 6.2.1 require that ultrasonic examination be conducted in both circumferential directions for reflectors transverse to the weld seam.
Contrary to the above, the inservice ultrasonic examination performed on October 22, 1991. of Weld No. 1 on Sketch TBX-1-4103 of the safety injection system was not conducted in both circumferential directions for transverse reflectors.
Respcnse to Hotice of Violation (445/9204-01) l TU Electric accepts the violation and the requested information follows; i
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Reassn for Violation The reason for the violation is personnel error, As noted above, the procedures in use properly defined the require:..ents for the performance of this examination as specified in ASME Scction XI.
Contributing to this situation was the failure of the individuals responsible for reviewing the documentation for the examination to identify that the documentation was incomplete.
2)
Corrective Steus Taken and Results Achieved An Operations Notification and Evaluation (ONE) Form FX-92-155 was issued to document the examination of weld TDX-1-4103-1 as incomplete with a re-examination to be performed during the second refueling
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outage.
A review of the preservice inspection data for the ultrasonic examination revealed no indication of defects, which provides confidence l
of weld integrity for continued operation.
Additionally, there has been l
no abnormal system operation that would have degraded or challenged this l
weld beyond the considerations in the design basis.
The required l
intpection interval for this weld is once every ten years.
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Attachment to TXX-92156 f
.Page'2 of 2 i
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Data sheets for examinations performed during the first refueling j
outage were reviewed by a TU Electric Level 111 inspector to assure all incomplete examinations were-documented on-limitation sheets.
j This review revealed no additional, improperly documented, j
incomplete examinations; therefore we nave concluded the deficiency-noted in the violation is an isolated occurrence.
Administrative 4
deficiencies noted while performing this review'have.been documented by issuance of a ONE form.
Additionally, independent of the review performed by the TU Electric Level 111 inspector, a-surface defect, identified j
during the outage, was observed which was improperly accepted.
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Specifically, the defect vas incorrectly determined to be acceptable through the application of an inappropriate ASME-Section j
j XI table by the reviewer.
The misapplication of the table was identified during the preparation of the ASME Section XI summary.
l report.
The issue has been documented on a'ONE form and the defect has been evaluated as acceptable as allowed by ASME Section XI, 3)
Corrective A-tions Taken to Preclude Recurrence l
The responsible organizations shall.be nc+ified of-the circumstances leading to this violation and directed to discuss this situation with the appropriate personnel, j
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Dale When Full ComD iance Will Be Achieved l
i Full compliance with all corrective actions shall be achieved prior to the end of the second refueling outage.
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