ML19210B374

Responds to AEC 730918 Request for Notification Re Action to Be Taken Re Thermal Overload Heater.Engineered Safeguard Motor Operated Valve Overload Heaters Revised to Activate at 300% of Full Load Current for Operating Time of Valve

ML19210B374
Person / Time
Site:	Three Mile Island
Issue date:	10/16/1973
From:	John Miller METROPOLITAN EDISON CO.
To:	Deyoung R US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 7911070697
Download: ML19210B374 (2)

Text

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CONTROL NO: 7653 FILE:

FRCM: DATE OF DOC DATE REC'D LTR MEMO RPT OTIEA' Metropolitan Edison Co: pany Re ding, Pennsylvania 19603 J. . Miller 10-16-73 10-18-73 X TO: ORIG CC OTIER SENT AEC PDR X Mr. DeYoung i signed CLASS UNCLASS 2 ROP I:,TO INPUT 1;0 CYS REC'D DOCK 1:T :;0:

XXX 1 50-289 DESCRIPTION: ENCLCSURES:

Ltr re AEC/DRL ltr dtd 9-18-73.. . . advising AEC of their intent to resize the engineered safeguard motor operated valve overload heaters to activate at 300 7. of full load current. . . . . . . '

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'/;X,') ro. ora na r x ru METF OPOLITAN EDISON COMPANY POST OFFICE BOX 542 READING, PENNSYLVANIA 19603 TELEPHONE 215 - 929-3601 w*

October te, 1973

- \W(Il9 8 iD Mr. R. C. DeYoung, Assistant Director ' N <

for Pressurized Water Reaccors <,

Directorate of Licensing IhUL .Qg Office of Regulation U.S. Atoctic Energy Commission

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SUBJECT:

THREE MILE ISLAND NUCLEAR STATION D g/

DOCKET NO. 50-289 Q9 4y (g '-

480 VOLT MOTOR CONTROL CENTER THERMAL OVERLOAD HEATERS REF: AEC/DRL Letter Dated 9/18/73

Dear Mr. DeYoung:

The referenced AEC/DRL letter directed Metropolitan Edison Company to use the criteria for selecting thermal overload heaters as 300% of the full load current for safety related motor operated valves.

As requested in the referenced letter, we are notifying you of our intended course of action. We are proceeding to resize the engineered safeguard motor operated valve overload heaters to activate at 300% of full load current for the operating time of the valve.

It is our intent to have completed this change by initial fuel load.

Very truly yours,

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%. r 4 J. G. Miller Vice President asb 4

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