ML19323D234

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Responds to IE Bulletin 79-28, Possible Malfunction of Namco Model EA180 Limit Switches at Elevated Temps. Some Namco Limit Switches Have Been Specified for Unit 1.Top Gaskets Will Be Replaced in Any Defective Models
ML19323D234
Person / Time
Site: River Bend  Entergy icon.png
Issue date: 03/14/1980
From: Weigand J
GULF STATES UTILITIES CO.
To: Seyfrit K
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
IEB-79-28, NUDOCS 8005210303
Download: ML19323D234 (1)


Text

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e GULF STATES UTILITIES COMPANY p o S T o F FIC E S o x 2 9 51 . BEAUMONT. TEXAS 77704 AREA CoCE 713 838 6631 March 14, 1980 REG - 7359 File G9.5 Mr. Karl V. Seyfrit, Director Nuclear Regulatory Commission, Region IV Office of Inspection and Enforcement 611 Ryan Plaza Drive Suite 1000 Arlington, TX 76011

Dear Mr. Seyfrit:

River Bend Station - Units 1 & 2 Refer to: RTI Docket Nos. 50 458/I&E Bulletin 79-28 50 h59/I&E Bulletin 79-28 In our letter of February 28, 1980 we informed you that the Namco Model EA 180 limit switch addressed in I&E Bulletin 79-28 was not specified for use at the River Bend Station. This response was based on the information available from a preliminary review of equipment specified. Later information provided by our Architect / Engineer indicates that some Namco Model EA 180 stem-mounted limit switches have been specified for Unit 1. However, none of the valves under these specifications have been released for fabrication and, thus, the production date of the Namco EA 180 switches r.snnot be deter =ined. In the event that the questioned Namco switc>es are used at Unit 1, the top gasket of the switches will be replacad in accordance with the recommendations of the ILE Bulletin 79-28. For future specifications, instruction will be given to the vendors to exclude the use of the subject limit switches. As stated in the February letter, our NSSS Vendor indicates that the subject Namco limit switches are not specified in its scope.

Sincerely, i .t f .'-

x, v  :., .9 ) - '

).G.Weigand "

Vice President Operations & Technical Systems JGW/WJR/JEB/mb' l 8005210303 Q

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