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 NRC ORG: TILL INGHAST J IN Cc MI PWR DOCDATE: 01/26/78 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>\FOR ACTION: BRANCH CHIEF'AVIS++LTR ONLY(7)INTERNAL: EXTERNAL: REG F++LTR ONLY(i)++LTR ONLY<2)HANAUER++LTR ONLY(l>E I SENHUT4+I TR ONLY<1)BAER++LTR ONLY(1)GRIMES++LTR ONLY<1)J.MCGOUGH>+LTR ONLY(l>LPDR'S ST.JOSEPHr MI++LTR ONLY<1)TIC4+LTR ONLY(l>NSIC++LTR ONLY<1)ACRS CAT B+4~LTR ONLY(16>NRC PDR%%LTR ONLY(i>OELD44LTR ONLY<1)CHECK4+LTR ONLY(i)SHAO+4LTR ONLY<i)BUTLER++LTR ONLY(i>J.COLLINS++LTR ONLY<1)DISTRIBUTION:

LTR 40 ENCI 0 SI ZE: 2P%%%%%%0f 4%%%w%%%%4 SHE'D%%%%%%%%%%%%%%%

THE END CONTROL NBR: 780320011 0~~

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 fly'rttrrrj>SSr0~+KO~

Donald C.Cook Nuclear Plant Unit, No.1 Docket No.50-315 DPR No.58 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 CC: Notary Public KATHY.FEN D~Yt.(see next page)" No.41-1606792 Qualitied in Queens Cou'nty Corti(iecto Iiied in New York Corrnty,'ommittron hrrprrcs rhrrrch 30, 19'OOg g~~o

~'~~~I t a P~Sh>V~~=g d'~lr l 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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