ML18219D842

Response to Letter of 11/28/1977 Concerning Limiting Heatup Rate of Pressurizer, Advising, Operating Record Review Indicates Maximum Rate, with All Heaters in Service, Was 67.5oF/hour

ML18219D842
Person / Time
Site:	Cook
Issue date:	01/26/1978
From:	Tillinghast J Indiana Michigan Power Co, (Formerly Indiana & Michigan Power Co)
To:	Case E Office of Nuclear Reactor Regulation
References
Download: ML18219D842 (6)

Text

REGULATORY INFORMATION DISTRIBUT'ION SYSTEM (RIDS>

DISTRIBUTION FOR INCOMING MATERIAL 50-315 REC: CASE E G ORG: TILLINGHAST J DOCDATE: 01/26/78 NRC IN Cc MI PWR DATE RCVD: Oi/31/78 DQCTYPE: LETTER NOTARIZED: YES COPIES RECEIVED

SUBJECT:

LTR 1 ENCL 0 RESPONSE TO NRC"S LTR DTD 11/28/77 CONCERNING THE LIMITING HEATUP RATE OF THE PRESSURIZFR ... ADVISING REQUIRED PRESSURIZER HEATUP RATE OF 100 DEGREES F/HOUR HAS NEVER BEEN EXCEEDED DURING THE COURSE OF ANY PLANT STARTUP... NOTORIZED 01/26/78.

PLANT NAME: CQOK UNIT 1 REVIEWER INITIAL: X JM DISTRIBUTOR INITIAL:

DISTRIBUTION OF THIS MATERIAL IS AS FOLLOWS GENERAL DISTRIBUTION FOR AFTER ISSUANCE OF OPERATING LICENSE.

(DISTRIBUTION CODE A001>

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INDIANA II MICHIGAN POWER COMPANY P. 0. BOX 18 BOWI.ING GREEN STA'rION NEW 'll'OR K, N. Y, 10004 January 26, 1978 g

Donald C. Cook Nuclear Plant Unit, No. 1 fly' Docket No. 50 315 DPR No. 58 rttrrrj >SSr0~+KO~

Mr. Edson G. Case, Acting Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Dear Mr. Case:

This letter is in response to Mr. Don K. Davis'etter. of November 28, 1977 concerning the limiting heatup rate of the pressurizer. We have conducted a review of our operating records at the Donald C. Cook Nuclear Plant Unit No. 1 subsequent, to the receipt, of Mr. Davis'etter. This review indicates that, the re-quired pressurizer heatup rate of 100 F/hour has never been ex-ceeded during the course of any plant startup. The maximum heat-up rate, with all heaters in service, was 67.5 F/hour.

Plant operating procedures were revised to require a limit-ing pressurizer heatup rate of 100 F/hour, subsequent to noti-fication from Westinghouse. Amendment No. 23 to the Unit, No. 1 Technical Specifications includes a revision to require the limit-ing pressurizer heatup rate of 100 F/hour.

Ver truly yours, JT em

'ce President Sworn and subscribed to before this ~<'~day of January, 1978 in New York County, New York Notary Public ~~o 19'OOg g

KATHY.FEN D~Yt .

CC: (see next page) " No. 41-1606792 Qualitied in Queens Cou'nty Corti(iecto Iiied in New York hrrprrcs rhrrrch 30, Corrnty,'ommittron

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Mr. Edson C. Case January 26, 1978 cc: R. C. Callen R. J. Vollen G. Charnoff P. W. Steketee R. Walsh R. W. Jurgensen D. V. Shaller Bridgman

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