ML20044G486

Advises That Thermo-Lag Lab Test Results Repts for 6-inch Cable Protected by Thermo-Lag & for MOVs Hand Delivered to Be Holian,Per NUREG-0797 (Sser 26 & 27)

ML20044G486
Person / Time
Site:	Comanche Peak
Issue date:	05/26/1993
From:	William Cahill TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
RTR-NUREG-0797, RTR-NUREG-797 TAC-M85998, TAC-M85999, TAC-M86000, TXX-93214, NUDOCS 9306030190
Download: ML20044G486 (2)

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1- Log # TXX-93214 File # 10010 1UELECTRIC May 26, 1993 Wimam n Cahi!!, Jr.

1 Gmp Vice Presidre U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)

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DOCKET NOS. 50-445 AND 50-446 NRC TAC NOS. M85998, M85999, THERMO-LAG LABORATORY

TEST RESULT REPORTS FOR 6" CABLE TRAY AND AMPACITY DERATING OF CABLE PROTECTED BY THERMO-LAG, AND TAC

NO. M86000 FOR MOTOR OPERATED VALVES REF: NUREG-0797, Supplement Nos. 26 and 27, Safety Evaluation Report Gentlemen:

TU Electric is hereby docketing copies of the laboratory test reports which document the results of fire endurance and ampacity derating testing. The  ;

test reports being docketed were hand delivered to Mr. B. E. Holian of the NRC Staff, and are as follows:

a) Scheme 15-1; " Fire Endurance Test of a Thermo-Lag 330-1 Fire Protective i Envelope

36 Inch Tray."

2 b) Ampacity derating of fire protected cables; " Electrical Test to Determine the Ampacity Derating of a Protective Envelope for Class 1E Electrical Circuits."

NUREG-0797, Supplement No. 26 discusses TU Electric's commitment to complete

, design modifications to address the potential spurious operation of certain motor operated valves. This action is being tracked by NRC TAC No. M86000.

TU Electric has approved and scheduled these design modifications to be completed prior to startup from the first refueling outage for Unit 2 and prior to startup from the third refueling outage for Unit 1.

Additionally, NUREG-0797, Supplement No. 27 states that issues regarding testing associated with 36" cable trays and ampacity derating are being tracked by NRC Staff utilizing NRC TAC Nos. M85998 and M85999. The

submittal of these test reports should resolve these items.

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- TXX-93214.

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t Should you have any questions or need additional-information please contact? r Obaid Bhatty at (817) 897-5839.

. Sincerely,

.1

-i, William-J. CEhil.1, Jr.

OB:tg l cc: Mr. .J. L. Milhoan, Region IV I Mr. L. A. Yandell, Region IV J Mr. B. E. Holian, NRR i Mr. T._A. Bergman, NRR- .1 Resident Inspectors, CPSES'(2) ,

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