TXX-6699, Interim Deficiency Rept CP-86-52 Re Splice/Connections Used for Cable Trays in Units 1 & 2.Initially Reported on 860429. Ncrs Generated to Identify & Initiate Corrective Action for Z Type Splices.Next Rept Will Be Submitted by 871023

Interim Deficiency Rept CP-86-52 Re Splice/Connections Used for Cable Trays in Units 1 & 2.Initially Reported on 860429. Ncrs Generated to Identify & Initiate Corrective Action for Z Type Splices.Next Rept Will Be Submitted by 871023

ML20237G056
Person / Time
Site:	Comanche Peak
Issue date:	08/28/1987
From:	Counsil W, Woodlan D TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
CP-86-52, TXX-6699, NUDOCS 8709020078
Download: ML20237G056 (3)

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6-== == ;i Log # TXX-6699 )

F9 File # 10110  ;

__,_ .-- 903.11 )

Ref: 10CFR50.55(e) 1UELECTRIC ,

l William G. Counsil Eucutne Vnv President U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)  !

DOCKET NOS, 50-445 AND 50-446 CABLE TRAY SPLICES / CONNECTIONS SDAR: CP-86-52 (INTERIM REPORT) l l

Gentlemen:

On April 29, 1986, we notified you by our letter, logged TXX-6415, that the deficiency involving splice / connections used for cable trays in Units 1 and 2 was reportable under the provisions of 10CFR50.55(e). This is an interim report to status the corrective actions to date.

ENGINEERING EVALUATION Walkdowns have been performed to gather data concerning Unit 1 and 2 splice connections. Engineering evaluation of walkdown data resulted in the identification of one unacceptable splice type (Z-type) and several splice types which required testing.

Trays in Unit 1 are manufactured by T. J. Cope; Unit 2 trays are a mixture of Burndy-Husky and T. J. Cope. Testing of T. J. Cope splice connections has l been completed, and the test results have been evaluated. No notable I difference in the T. J. Cope tray has been identified between Units 1 and 2.

1 Results of testing and evaluation are therefore applicable to both Units 1 and

2. ,

Test results and evaluation indicate that some splice configurations under worst case loading conditions have not exhibited expected capacities. Field installations for these splice types will be evaluated based on actual load conditions. Any installations which cannot be qualified through evaluation will be modified as required in accordance with approved site procedures.

Further tests are currently being scheduled to provide for evaluation of Burndy-Husky splice connections.

8709020078 970828 5 PDR ADOCK 0500 S

400 North Obve Street LB 81 DaHas, Teus M01 f${D l

TXX-6699 August 28, 1987 i Page 2 i l

l CORRECTIVE ACTION {

{

The following measures have been implen,9nted to prevent the misuse of splice {

plates in Units 1 and 2. I

1) Design Change Authorizations (DCAs) have been issued to provide criteria per specifications ES-100, " Electrical Erection," via DCA 31431 and ES-19, " Cable Tray Specifications," via DCA 34029.

Previously generated splice plate DCAs have been voided to prevent use.

2) Revisions to electrical construction procedure ECP-10, " Cable Tray Hanger Installation, Unit 1," and ECP-10A, " Cable Tray and Hanger Installation, Unit 2," have been prepared. These revisions, however, are on hold pending revision to Specifications ES-100 and ES-19/

ES-19A.

NCRs have been generated to identify and initiate corrective action for installed "Z type splices.

l l Upon completion of testing, we will perform evaluation of test results and l inform you of any additional corrective action required. We will submit the i next report on this issue no later than October 23, 1987.

l l Very truly yours, l

b. (o h l W. G. Counsil By:

D. R. Woodlan Supervisor, Docket Licensing RSB/mlh c - Mr. R. D. Martin, Region IV Resident Inspectors, CPSES (3) 85'] -

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