ML19309F089

Second Interim Deficiency Rept Re Faulty GE CR2940-US203E Hand Switch in Plant Svc Water Sys.Switch Returned to GE for Failure Analysis.Final Rept Will Be Forwarded on 800618

ML19309F089
Person / Time
Site:	Grand Gulf
Issue date:	04/15/1980
From:	Dale L MISSISSIPPI POWER & LIGHT CO.
To:
References
DECM-80178, NUDOCS 8004280481
Download: ML19309F089 (1)

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MISSISSIPPI POW $R & LIGHT COMPANY Helping Build Minissippi EdidankmanB P. O. B OX 16 4 0 J A C K.S O N., MIS SIS SIP PI 3 9 2 05

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(. l bJ April 15, 1980' PRODUCTION DEP&RTMENT Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Region II 101 Marietta St., N.W., Suite 3100 Atlanta, Georgia 30303 Attn:

Mr. J. P. O'Reilly, Director

SUBJECT:

Grand Gulf Nuclear Station Units 1 and 2 Docket Nos. 50-416/417 File 0272/15525/15526 PRD-80/01, Status Report #2, CR2940 Handswitch Failure AECM-80/78 On January 25, 1980, Mississippi Power & Light notified Mr. M. J. Gouge of your office of a Potentially Reportable Deficiency (PRD) at the Grand Gulf Nuclear Station construction site. The deficiency concerns the failure of handswitch CR2940-US203E supplied by General Electric.

The faulty handswitch was employed in the Plant Service Water system, a non-safety related application. As used in this application, it is our conclusion that this deficiency would not have adversely affected the safety of plant operations.

Switches of similar design are procured through safety level controls and are employed in several safety-related systems. For this reason, the faulty switch was returned to General Electric for a failure analysis and further evaluation.

This evaluation should aid us in determining the generic safety implications, if any, of this deficiency.

We now expect to provide our final report and determination of report-ability on this matter by June 18, 1980.

Yours truly, f

f fj L. F. Dale Nuclear Project Manager JGC/JDR:ts g

cc:

Mr. N. L. Stampley 56 Mr. R. B. McGehee Mr. Victor Stello, Jr., Director Division of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.

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