ML20127J481

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Responds to IE Bulletin 74-14.On 741120,criteria & Instructions Added to Applicable Procedures to Assure That Suppression Pool Cooling Will Be Initiated to Prevent or Limit High Local Suppression Pool Temps
ML20127J481
Person / Time
Site: Monticello Xcel Energy icon.png
Issue date: 11/21/1974
From: Wachter L
NORTHERN STATES POWER CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
IEB-74-14, NUDOCS 9211190350
Download: ML20127J481 (2)


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}s NORTHERN STATES POWER COMPANY Minneapolis, Minnesota 55401 November 21, 1974 s

Mr. J. G. Keppler, Regional Director Directorate of Regulatory Operations Region III 799 Roosevelt Road Glen Ellyn, Illinois 60173

Dear Mr. Keppler:

hD.VfICELlh NUCLEAR GENERATItE Pl#ff Docket No. 50-263 License No. DPR-22 1

in accordance with item 2. of R0 Bulletin 74-14, the following information is submitted.

A review of procedures as requested in item 1, of the bulletin has been completed. A similar review had been initiated prior to receipt of the bulletin as a result of infomation received from General Electric Company.

On November 20, 1974, criteria and instmetions were added to applicable procedures to assure tlut:

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1) Suppression pool cooling will be initiated to prevent or limit high local suppression pool temperatures.
2) The reactor will be tripped if bulk suppression pool temperature becomes excessive.
3) Reactor depressurization will be performed as necessary to limit relief valve flow rates under high suppression pool temperature conditions.
4) Visual inspections of the suppression pool structures will be conducted following extended relief valve discharges.

With these additions, the operating procedures are believed to be adequate with respect to all of the areas described in the bulletin.

Yours very tmly, Y

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. Wachter Vice President-Power Production and System Ooeration.

9211190350 741121

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~n cc: Mr. J. P. O' Leary, Directorate of Licensing Mr. G. Charnoff Minnesota Pollution Control Agency W

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