TXX-6791, Interim Deficiency Rept CP-87-92 Re Instrument Panel Cable Separation.Evaluation of non-Class 1E Crossing Class 1E Cables Continuing.Next Rept Will Be Submitted by 871211
| ML20235R662 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 10/02/1987 |
| From: | Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| CP-87-92, TXX-6791, NUDOCS 8710080142 | |
| Download: ML20235R662 (1) | |
Text
_ _ _ _ _ - _ _ _ _ _ __ _ _ _ - _ _ _ ___ _____ _ _
M==
Log # TXX-6791 b
d Fi1e # 10110
_-=
=
907 Ref # 10CFR50.55(e) illELECTRIC Wmiam G. Counsil emo,;,e wm ernweist October 2, 1987 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C.
20555
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET N05. 50-445 AND 50-446 INSTRUMENT PANEL CABLE SEPARATION SDAR: CP-87-92 (INTERIM REPORT)
Gentlemen:
On September 3, 1987, we verbally notified your Mr. H. S. Phillips of a deficiency involving separation of Class 1E and non-Class 1E cables in some 118 VAC instrument bus distribution panels which may not be adequate.
This is an interim report of a potentially reportable item under the provisions of 10CFR50.55(e).
Specifically, in four instrument distribution aanels non-Class 1E cables cross Class 1E cables to reach assigned circuit brea<ers.
This arrangement does not achieve the maximum practical separation of the cables required per the FSAR Section 8.3.1.2.1.7C.
We are continuing our evaluation of these conditions for the possible adverse affects or degradation of the Class 1E cables. Our next report on this issue will be submitted no later than December 11, 1987.
Very truly yours, 1%
W. G. Counsil VIP /gj c - Mr. R. D. Martin, Region IV Resident inspectors, CPSES (3) 8710000142 Q 80$43 p
PDR ADOCK ppg g
S 1q0 MC Nonk Olise Street LU 81 Da!!as. Tetas 7320I