ML17272A857

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Responds to IE Bulletin 79-28, Possible Malfunction of Namco Model EA180 Limit Switches at Elevated Temps. Util Has No Namco Model EA180 Stem Mounted Limit Switches in Use in safety-related Sys Sustained Temps Above 175 F
ML17272A857
Person / Time
Site: Columbia Energy Northwest icon.png
Issue date: 01/28/1980
From: Renberger D
WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To: Engelken R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
IEB-79-28, NUDOCS 8003170151
Download: ML17272A857 (2)


Text

Washington Public Power Supply System A JOINT OPERATING AGENCY P. O. BOX 950 3000 GrO. WASRiNOTON WAY RICH[.ANO, WASH>NOrON 99352 PHONE (509) 375 5000 January 28, 1980 Docket No. 50-397 Mr. R. H. Engelken, Director U. S. Nuclear Regulatory Commission 1990 North California Boulevard Suite 202, Walnut Creek Plaza Walnut Creek, California 94956

Subject:

WPPSS NUCLEAR PROJECT NO. 2 IE BULLETIN NO. 79-28 "POSSIBLE MALFUNCTION OF NAMCO MODEL EA180 LIMIT SWITCHES AT ELEVATED TEMPERATURES"

Dear Mr. Engelken:

The Washington Public Power Supply System has reviewed the subject IE Bulletin and offers the following in response:

According to our records, we have no NAMCO Model EA180 stem mounted limit switches in use or planned fog use in safety-related applications at sustained temperatures above 175 F.

The WNP-2 safety-related limit switches used in high temperature locations are NAMCO Model EA700.

Yery truly yours, D, L. RENBERGER Assistant Director, Technology DLR:FJ:cd

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