ML20024G832

Responds to Re Noncompliance Noted in Insp Rept 50-263/78-07 Re Tech Spec 3.1.A

ML20024G832
Person / Time
Site:	Monticello
Issue date:	07/25/1978
From:	Wachter L NORTHERN STATES POWER CO.
To:	Fiorelli G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20024G831	List: IR 05000263/1978007 ML20024G832
References
NUDOCS 9104300463
Download: ML20024G832 (2)

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.s NOMTNERN 5TATEE POWER COMPANY MIN N E A POU S. MIN N E S OTA 55401 July 25, 1978 Mr. Gaston Fiore111 Chief Reactor Operations and Nuclear Sapport Branch Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn Illinois 60137

Dear Mr. Fiore111:

MONTICELLO NUCLEAR GENERATING F M 7 Eocket No. 50-263 License No. E?R-22 Your letter of July 6,1978, identified an item which appeans to be in noncompliance with NRC requirements and requested a reply within 20 days of receipt of your letter. The noncompliance, as stated, was --

Centrary to Section 3.1.A of the Technical Specifications bable 3.1.1), the required minimum number of operable APRM channels per trip system was not available in the reactor protective system during the startup on June 6,1978.

During a normal power ascension, four of six APRMs were discovered to be reading three to four percent low due to power shape changes. The gain settings were immediately corrected. This event was designated as Reportable Occurrence M-RO-78-11, and a Licensee Event Report wac submitted.

Operating procedures have been changed to require APRM gain checks every 10 percent of rated power change as opposed to the previous rule of every two hours during load changes.

(Rates as high as 30 percent of rated power per hour are permissible.)

Procedures have been revised to require that an operator enter all gain adjustuents in the control room log. In addition, the Shif t Supervisor must be; notified before adjusting APRM gains.

The infraction has been discussed with the personnel involved. The importance of good communications between the nuclear engineers and operations personnel was stressed.

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Hr. Caston Fiore111

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July 25, 1978 Page 2 It*is believe6 that the above actions are responsive to the concerns

, or expressed in IE Report 50-263/78 07 and will prevent similar occurrences in the future.

j should you have any questions concerning this response, please connunicate directly with the plant management.

l Yours very truly, h:NS L. J. 'achter Vice President - Power Production and System Operation cct Mr. C. Charnoff 8

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