ML19309A730
| ML19309A730 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 02/27/1980 |
| From: | Eric Turner HOUSTON LIGHTING & POWER CO. |
| To: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| IEB-79-28, NUDOCS 8004010126 | |
| Download: ML19309A730 (3) | |
Text
7~fe Tine Light Company n<,t si,,, usini,y u<,m m m,x imo n,1,si.,is.mxamooumem m i February 27, 1980 ST-HL-AE-422 SFN: V-0540 Karl V. Seyfrit Director, Region IV Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76102
Dear Mr. Seyfrit:
South Texas Project Units 1 & 2 Docket Nos. STN 50-498, STN 50-499 IE Bulletin No. 79-28 Bulletin No. 79-28, received December ll,1979, requested each construction permit holder to submit information regarding the use of NAMC0 Model EA 780 stem mounted limit switches at their respective 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 in-tervals until the concern is fully resolved.
A progress report has been attached.
Note that all potentially affected vendors have been informed of the concern.
Two responses have been received:
one vendor has initiated corrective action, while equipment for STP from another vendor was not affected by this concern.
Updates will continue to be transmitted to you as indicated.
If there are any questions, please contact us.
Very truly yours,
.d.
e v>+
E. A. Turner Vice President Power Plant Construction and Technical Services PLW/meb Attachment 800,1010126
I&E Bulletin 79-28 NAMC0 Limit Switches Advisory Letter
Response
Vendor Sent Received Remarks Fisher Controls 12-20-79 l-15-80 Corrective action implemented as recomended by NAMC0 WKM 12-20-79 Kerotest 01-08-80 Anchor Darling 01-08-80 Dresser Industries 01-08-80 Anderson Greenwood 01-08-80 Cooper Energy Systems 01-07-80 Bingham-Willamette 01-07-80 Hills McCanna 01-07-80 Pacific Valves 02-13-80 Xomox 02-13-80 Westinghouse (Ametek) 01-15-80 1-30-80 NAMCO limit switches supplied to STP are not affected.
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Houston kighung & lbwer Company February 27, 1980 ST-HL-AE-422 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. Neman (Lowenstein, Neman, Reis, Axelrad & Toll)
D. G. Barker A. J. Granger R. A. Frazar G. B. Painter H. R. Dean R. L. Waldrop C. L. McNeese 4
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