TXX-6777, Reponds to NRC Re Violations Noted in Insp Repts 50-445/87-11 & 50-446/87-09.Corrective Actions:Ncrs CE-87-9610 & CE-87-10026 Issued on 870811 & 21,respectively, Documenting Nonconforming Conditions
| ML20235S724 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 10/02/1987 |
| From: | Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| TXX-6777, NUDOCS 8710090114 | |
| Download: ML20235S724 (3) | |
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Log # TXX-6777 q
File # 10130
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IR-87-11'
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IR-87-09 Ref # 10CFR2.201.
N# ELECTRIC October 2, 1987 William G. Counsil Executive %cc President U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555 i
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS. 50-445 AND 50-446 RESPONSE TO NRC INSPECTION REPORT NOS. 50-445/87-11 AND 50-446/87-09 Gentlemen:
We have reviewed your letter dated September 2,1987, concerning the inspection conducted by Mr. I. Barnes and other members of the Comanche Peak Project Division during the period from June 5 through July 7, 1987.
This inspection covered activities authorized by NRC Construction Permits CPPR-126 and CPPR-127 for Comanche Peak Steam Electric Station Units 1 and 2.
Attached l
to your letter was a Notice of Violation.
We hereby respond to the Notice of Violation in the attachment to this letter.
Very truly yours,
/'1N?
i W. G. Counsil l
RDD:tgj Attachment c-Mr. R. D. Martin, Region IV Resident Inspectors, CPSES (3) i j
DR D
0 D
's 1
400 North Olive Street LB 81 Dallas, Texas 75201
Attachment to TXX-6777 October 2 1987 Page 1 of'2 NOTICE OF VIOLATION ITEM A (445/8711-V-02: 446/8709-V-021 Criterion V of Appendix B to 10 CFR Part 50, as implemented by Section 5.0, Revision 3, dated July 31, 1984, of the TV Electric Quality Assurance Plan, requires that activities affecting quality shall be prescribed by and accomplished in accordance with documented instructions, procedures, or drawings of a type appropriate to the circumstances.
Section 3.7.6.1.1.b of TV Electric Specification 2323-MS-808, Revision 0, dated May 17, 1976, states, in part, with respect to safety-related water chillers, "... Splicing of wiring connections or use of common wire nuts is forbidden."
Section 3.7.6.2.a of the above specification states, in part, "...All control and instrumentation wiring shall be brought to terminal blocks moucted within J
NEMA 12 boxes in accordance with NEMA standards..."
Contrary to the above, the NRC inspector identified the following:
1.
Cap type, inline splice connectors were used to splice wires inside junction / outlet boxes and to terminate instruments and limit switches on all four of the safety-related water chiller units, CP1-CHCICE-05 and -06 and CP2-CHCICE-05 and -06.
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A cap type, inline splice was installed on wire #110 between a relay and terminal strip inside the control panel mounted on chiller unit CP1-J CHCICE-06. This splice was located inside a wiring trough.
3.
One of the auxiliary oil pump motor leads was found terminated using a twist-on wire nut on chiller unit CP2-CHCICE-05, (445/8711-V-02; 446/8709-V-02).
I RESPONSE TO NOTICE OF VIOLATION l
ITEM A (445/8711-V-02: 446/8709-V-02)_
j TV Electric agrees with the alleged violation and the requested information follows:
1.
Reason For Violation The violation was caused by a failure on the part of the equipment supplier (York-Borg Warner) to comply with specification requirements involving splices and wire nuts. As noted in the chiller procurement specification 2323-MS-80B, " Centrifugal Water Chillers," splices and the application of wire nuts are prohibited.
2.
Corrective Steos Taken And Results Achieved NCR's CE-87-9610 and CE-87-10026 were issued on August 11, 1987 and August 21, 1987 respectively, documenting the nonconforming conditions. These NCR's have been dispositioned to replace the unauthorized splices and wire nuts with approved connections.
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Attachment to TXX-6777 October 2, 1987 Page 2 of 2 i
3.
Corrective Steps Which Will Be Taken To Avoid Further Violations The Approved Vendor List has been revised to restrict further purchases from York-Borg Warner pending receipt and approval of a revised QA program.
Further purchases will be limited to spare parts. We have confirmed no other safety-related equipment has been procured from York-Borg Warner.
Issue Specific Action Plan (ISAP) VII.a.9 has been ' implemented to address concerns regarding vendor compliance with procurement / design requirements.
A report detailing the results of the ISAP VII.a.9 findings is scheduled 1
for issue by December 15, 1987.
By Jar.uary 30, 1988, we will provide a 1
description of additional corrective actions (if any) planned as a result i
of the ISAP VII.a.9 Results Report.
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Date When Full Comoliance Achieved Removal of unauthorized splices and wire nuts per NCRs CE-87-9610 and CE-87-10026 will be completed by November 30, 1987.
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