ML20211G990

Forwards Addl Response to NRC Re Violations Noted in Insp Repts 50-445/85-07 & 50-446/85-05.Corrective Actions:Output Voltage Spec Changed & Documented in Halmar Test Procedure TP-001

ML20211G990
Person / Time
Site:	Comanche Peak
Issue date:	02/20/1987
From:	Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
TXX-6284, NUDOCS 8702260033
Download: ML20211G990 (3)

Text

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== Log # TXX-6284 P """ File # 10130

--.- C IR 85-07 C IR 85-05 7t# ELECTRIC Ref # 10CFR2.201

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t February 20, 1987 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)

DOCKET NOS. 50-445 AND 50-446 INSPECTION REPORT NOS.: 50-445/85-07 and 50-446/85-05 SUPPLEMENTAL REQUEST FOR INFORMATION TO NRC NOTICE OF VIOLATION (NOV) ITEMS 1, 2.a and 2.b REF: 1) TV Electric Letter TXX-4727 from W. G. Counsil to E. H. Johnson dated April 2, 1986

2) NRC letter from E. H. Johnson to W. G. Counsil dated December 30, 1986

3) TU Electric Letter TXX-6211 from W. G. Counsil to NRC dated January 28, 1987 Gentlemen:

We reviewed your letter (Reference 2) requesting additional information on the subject inspection report, and responded to the NOVs in our letter TXX-6211 (Reference 3). In our response to NOV 445/8507-03 (Item 2.b), we stated that TV Electric Quality Assurance was in the process of obtaining related information from the vendor and reviewing site documentation, and we anticipated submitting our response no later than February 16, 1987. We requested and received an extension in providing our response to NOV 445/8507-03 (Item 2.b) until February 20, 1987, during a telephone conversation with Mr. I. Barnes on February 17, 1987. We hereby respond to Item 2.b in the attachment to this letter.

Very truly yours, W. G. Counsil ,

RSB:lw Attachment c - Mr. E. H. Johnson, Region IV Mr. D. L. Kelley, RI - Region IV /

Mr. H. S. Phillips, RI - Region IV B702260033 870220 PDR ADOCK 05000445 G PDR 410 North Olhe Street I ..H. N I Dallas. Inas 75201

.. Attachment to TXX-6284 February 20, 1987 Page 1 of 2 NOTICE OF VIOLATION ITEM 2.b (445/8507-03)

SUPPLEMENTAL REQUEST FOR INFORMATION With respect to the corrective steps taken, please describe what formal actions were taken (e.g., specification revision) to justify the change in output voltage from 10 +/- 2v to 12 +/- 2v on the revised Westinghouse Quality Release. Your response also fails to provide any actions taken to assure that other equipment received from this vendor, irrespective of time frame, did not exhibit similar documentation deficiencies.

SUPPLEMENTAL RESPONSE TO ITEM 2.b Further evaluation of the apparent violation revealed a need to revise our original response. Accordingly, the following revised response is submitted.

1. Reason for the Violation The root cause of the out-of-tolerance condition was a relocation of the Westinghouse subtier supplier's test facility in 1978. A change in the local power level from 240v nominal at the old test facility to 277v nominal at the new location was not initially detected. This change affected the test result output. The supplier representative failed to detect the apparent out-of-tolerance condition noted on the test report prior to release of the equipment from the subtier suppliers shop (Halmar Electronic Corporation) and subsequent shipment to CPSES.

The out-of-tolerance conditions noted on the test report was not detected by CPSES QC receiving inspection personnel because Westinghouse supplied non-ASME equipment is receipt accepted based on the Westinghouse Quality Release (QR) being complete and general conformance verification to purchase order requirements.

2. Corrective Steos Taken and Results Achieved Westinghouse Engineering performed a review of test data for all Electric Hydrogen Recombiner (EHR) Silicon Controlled Rectifier (SCR) panels tested during the period May 13, 1975 to March 8, 1981, bracketing the period during which the 240 to 277 volt plant power transition effect on test results may not have been recognized. The result of the documentation review for the 209 SCRs revealed an additional out-of-tolerance condition of the same nature, which has been documented on a Westinghouse Deviation Notice (DN). The Westinghouse Engineering review has established that there was no adverse effect on the performance or function of the equipment as a result of the deviation.

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5 Attachment to TXX-6284 February 20, 1987 Page 2 of 2 NOTICE OF VIOLATION ITEM 2.b (445/8507-03)

SUPPLEMENTAL RESPONSE TO ITEM 2.b - CONT'D

2. Corrective Steps Taken and Results Achieved - Cont'd The output voltage specification was changed and documented in Halmar test procedure TP-001 and approved by Westinghouse Engineering per Westinghouse DN No. 26961 to compensate for the change in the test power supply.

3. Corrective Steos Which Will Be Taken to Avoid Further Violations Westinghouse's revaluation revealed only two panels out of 209 manufactured in the given time period to exhibit this out-of-tolerance condition. Therefore, this is considered a limited incident of personnel error by Westinghouse's subvendor (Halmar) specific to these panels.

These errors were not identified in the Westinghouse surveillance review of the test data due to the sampling nature of this review. Since the time period of this issue, but not as a result of this apparent violation, Westinghouse subtier supplier generated documentation has been subjected to increased frequency and depth of review by Westinghouse prior to authorization for shipment.

4. Date When Full Compliance Will Be Achieved CPSES is presently in compliance.

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