ML19318C131

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Updates 800331 Response to IE Bulletin 79-28, Possible Malfunction of Namco Model EA180 Limit Switches at Elevated Temps. No Addl Info Has Been Received from Vendors
ML19318C131
Person / Time
Site: South Texas  
Issue date: 04/30/1980
From: Eric Turner
HOUSTON LIGHTING & POWER CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
IEB-79-28, ST-HL-AE-454, NUDOCS 8007010072
Download: ML19318C131 (2)


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April 30,1980 ST-HL-AE-454 SFN: V-0540 Director, Region IV Nuclear Regulatory Comission 611 Ryan Plaza Drive Suite 1000 Arlington, Texas 76102

Dear Sir:

South Texas Project 1

Units 1 & 2 Docket Nos. STN 50-498, STN 50-499 Updated Response #4 to IE Bulletin No. 79-28 Bulletin No. 79-28, received December 11, 1979, requested each construction permit holder to submit information regarding the use of NAMCO Model EA 180 stem mounted limit switches at their respective 4

plants.

In the response of February 1,1980, Houston Lighting & Power Company informed you that the accumulated data for the South Texas Project would be sent to the NRC at approximately thirty-day intervals until the concern is fully resolved.

No additional information has been received since our transmittal of March 31, 1980.

HL&P will continue to send updates of vendor responses as stated above.

If there are any questions, please contact Mr. S. S.

Rodgers at (713) 676-7953.

Very truly yours, ja%'

!an E. A. Turner Vice President Power Plant Construction and Technical Services PLW/mmf 80070104g

o Houmon ugning & Pour company ST-nL-AE-434 Page 2 cc:

Director, NRC Office of Inspection and Enforcement Division of Reactor Operations Inspection M. D. Schwarz-(Baker & Botts)

R. Gordon Gooch (Baker & Botts)

J. R. Newnan (Lowenstein, Newman, Reis, Axelrad & Toll)

D. G. Barker C. L. McNeese H. R. Dean G. B. Painter R. L. Waldrop A.J. Granger R. A. Frazar I

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