TXX-6658, Interim Deficiency Rept CP-87-48 Re Deviation from Governing Installation Drawings Concerning Mixing of Cable Tray Clamp Types.Initially Reported on 870722.Validation of Installed Clamp Combinations Will Be Performed.Next Rept by 870923

Interim Deficiency Rept CP-87-48 Re Deviation from Governing Installation Drawings Concerning Mixing of Cable Tray Clamp Types.Initially Reported on 870722.Validation of Installed Clamp Combinations Will Be Performed.Next Rept by 870923

ML20237H493
Person / Time
Site:	Comanche Peak
Issue date:	08/21/1987
From:	Beck J, Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
CP-87-48, TXX-6658, NUDOCS 8708250038
Download: ML20237H493 (2)

Text

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Log # TXX-6658 Fi1e # 10110 E

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_"~ 903.9 Ref # 10CFR50.55(e)

TUELECTRIC I wmiam c. counsu auore, vice eresi*"'

August 21, 1987 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)

DOCKET NOS. 50-445 CABLE TRAY TRANSVERSE CLAMPS SDAR: CP-87-48 (INTERIM REPORT)

Gentlemen: i On July 22, 1987, we verbally notified your Mr. H. S. Phillips of a deficiency involving the mixing of inside transverse clamps (Type "C") on one side of a cable tray and outside transverse clamps (Types "A" and "G") on the other side. We are reporting this issue under the provisions of 10CFR50.55(e) and the required information follows.

DESCRIPTION During engineering validation activities performed in accordance with the corrective actions for a reportable deficiency (logged SDAR: CP-85-52), a mixing of cable tray clamp types have been observed which deviates from the governing installation drawings.

The scope of this issue is limited to cable tray clamps in Unit 1.

Engineering evaluation of the cable tray clamp combinations for all accessible installations has resulted in the identification of six unacceptable combinations.

SAFETY IMPLICATIONS In the event these deficiencies had remained undetected, a transverse movement of the cable trays could occur during a seismic event which in turn could result in an inability of the associated safety related systems to perform as required for system operation and safe shutdown.

CORRECTIVE ACTION A 100t validation of installed clamp combinations will be performed by engineering in accordance with procedure CPE-EB-FVM-CS-100 to identify unacceptable clamp combinations which require correction. Nonconformance Reports will be issued to document these conditions. Thermolag material will be removed as required to allow validation of clamp types.

8708250038 PDR 070821 ('

S ADOCK 05000445 PDR 400 Nonh Olive Street :.B RI Dallas. Texas 75201 [h 9

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i TXX-6658 August 17, 1987 Page 2 of 2 1

Unacceptable clamps will either be replaced by an acceptable clamp or an j additional clamp will be provided. In accordance with the area completion schedule the applicable CTH drawings will be revised to incorporate all j modifications.

(. l l Our next report on this 1ssue providing a status of our corrective actions will be submitted no later than September 23, 1987.

4' i Very truly yours, L) . G .

W. G. Counsil 1

By: MM.

J.27. Beck j Vice President, l Nuclear Engineering ]

1 l DAR/gj c - Mr. R. D. Martin, Region IV l

Resident inspectors, CPSES (3) l l

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