ML20087P311

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Responds to IE Bulletin 83-08 Re Electrical Circuit Breakers W/Undervoltage Trip Feature in Use in safety-related Applications Other than Reactor Trip Sys.Subj Circuit Breakers Not Used at Facilities
ML20087P311
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 04/02/1984
From: Clements B
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To: Jay Collins
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
IEB-83-08, IEB-83-8, TXX-#4136, NUDOCS 8404060271
Download: ML20087P311 (3)


Text

se TEXAS UTILITIES GENERATING COMPANY NKY WAY TOWER

  • 400 NORTIE OLIVE MTHEET, L.II. N B
m. "'.UI "O"MI*r. . April 2, 1984 ,

TXX #4136 l File No. 10130 1

Mr. Jo'hn T. Collins Regional Administrator l USNRC Division of Inspection l and Enforcement, Region IV 611 Rym Plaza Drive, Suite 1000 l Arlington, TX 76012 l I

Subject:

COMANCHE PEAK STEAM ELECTRIC STATION DOCKET NOS. 50-445 and 50-446 RESPONSE TO IE BULLETIN 83-08

Dear Mr. Collins:

The followSg information is provided as requested by IE Bulletin 83-08 l concerning " Electrical Circuit Breakers with an Undervoltage Trip Feature in Use in Safety-Related Applications other Than the Reactor Trip System."

Action 1 .

Identify applications of g type DB, E type DS, or G.E. type AK-2 circuit breakers with the UV trip feature as discussed in IEB 83-01 or 83-04 in safety-related applications at your facility, other than as RTBs. CP holders and licensees should also identify similar applications of other types of breakers by other manufacturers that use a UV trip feature. If such circuit breakers are used or planned for use, identify the system (s) involved.

Additional Action Licensees not using circuit breakers with a UVTA in safety-related applications (other than the reactor trip system) shall submit a negative declaration within 90 days of the receipt of this bulletin.

Response

A revie.w of Comanche Peak Steam Electric Station electrical systems determined that no circuit breakers (except those used for reactor trip 8404060271 840402 PDR ADOCK 05000445 / //

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A DEVENDON OF TEXA8 UTILITIER ELECTRIC COMPANY

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Mr. John TJ Collins Page 2 purposes) are provided with the "undervoltage trip" feature. Additionally, there are no plans to purchase or install new breakers which use an "undervoltage trip" unit.

The following manhours were expended in response to this bulletin:

1. Staff time to perform review - 42 hours4.861111e-4 days <br />0.0117 hours <br />6.944444e-5 weeks <br />1.5981e-5 months <br />
2. Staff time to prepare documentation -

6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> Should you have additional questians concerning this matter, please contact this office.

To the best of my knowledge, information, and belief, the matters set forth herein are true and correct.

Sincerely, B. R. Clements Vice President, Nuclear Operations BRC:msc Attachment Original to: U.S. Nuclear Regulatory. Commission 4

Document Control Desk Washington, D.C. 20555 4

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1 The foregoing response has een subscribed and sworn to befo e me, a Notary Public in and for ,

County, on this 4 day of M , 1984.

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