ML19312E542

Potentially Reportable Deficiency 80/12 Re Design Nomograph Used in Sizing & Selection of Hydramotor Electrohydraulic Actuators.Revises 800328 Rept to Correctly Identify Itt General Controls as Vendor.Final Rept by 800721

ML19312E542
Person / Time
Site:	Grand Gulf
Issue date:	04/25/1980
From:	Dale L MISSISSIPPI POWER & LIGHT CO.
To:
References
NUDOCS 8006050266
Download: ML19312E542 (2)

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M.SSISSIPP! POWER & LIGHT COMPANY Helpirra Build Mississippi F. O. B O X 184 0, u ;K S O N, MIS SIS SIP PI 3 9 205

?: l PRODUCTION DEPARTMENT April 25, 1980 p _

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Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N.W., Suite 3100 .

Atlanta, Georgia 30303 Attention: 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-80/12, Status Report, Design Nomographs Related to ITT General Controls Hydramotor Electrohydraulic Actuators AECM-80/87 On March 28, 1980, Mississippi Power & Light Company notified Mr. M. J.

Gouge of your office of a Potentially Reportable Deficiency (PRD) at the Grand Gulf Nuclear Station (GGNS) construction site. The deficiency con-cerns design nomographs used in the sizing and selection of hydramotor electrohydraulic actuators. The nomographs and actuators are supplied by ITT Ceneral Controls. This matter was previously reported to the NRC by the supplier under 10 CFR 21. The concern is that the nomographs may be interpreted incorrectly and may result in the incorrect sizing and selection of actuators. The nomographs in question pertain to Model NH90 series and j AH90 series electrohydraulic actuators.

In the above referenced initial notification of March 28, 1980, the vendor was incorrectly identified as ITT Grinnell General Controls. The l correct vendor name is ITT General Controls.

Our preliminary investigation revealed that four (4) actuators (Model-NH91) have been procured for use in the Standby Gas Treatment System at GGNS.

O/7 6

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Member Middle South Utilities System $FFICLiL COPY.

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. o MISSISSIPPI POWER & LIGHT COMPANY Mr. J. P. O'Reilly AECM-80/87 Page Two ,

Our analysis of this matter is continuing. We expect to provide a final report by July 21, 1980.

Yours truly, f W' L. F. Dale Nuclear Project Manager JCC/JDR:1j cc: Mr. N. L. Stampley Mr. R. B. McGehee Mr. T. B. Conner Mr. Victor Stello, Jr., Director Division of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 l

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