ML17338A709

Forwards Steam Generator Insp Program. Insp Showed No New Phenomena.Verified General Pattern of Denting Is within Predictable Limits.Requests Permission to Return Facility to Power Operation

ML17338A709
Person / Time
Site:	Turkey Point
Issue date:	05/18/1979
From:	Robert E. Uhrig FLORIDA POWER & LIGHT CO.
To:	Stello V Office of Nuclear Reactor Regulation
Shared Package
ML17338A710	List: ML17338A709 ML17338A711
References
L-79-122, NUDOCS 7905240486
Download: ML17338A709 (6)

Text

RE TORY INFORNATION DISTR1B QN SYSTEN (RIDS) b ACCESSION NBR: 790524048b DQC. DATE: 7'7/05/i8 NOTARIZED: NQ DOCKET FAC IL: 50-25f TURKEY POlNT PLANTi UNIT 4i FLORlDA POMER AND LlGHT C 0500025f AUTH. MANE AUTHOR AFFlLIATIQN UHRIGi R. E. FLORIDA POMER 5 LIGHT CO.

REC lP. NANE REC IPlENT AFFILI*TlON STELLOi V. DIVISlQN QF OPERATING REACTORS

SUBJECT:

FQRMARDS STEAN GENERATOR 1NSP PRQGRAN. INSP SHQMED NO NEM PHENONENA. VERIFIED GENERAL PATTERN QF DENTING IS MITHIN PREDICTABLE LINITS. REGUESTS PERNISSIQN TO RETURN FACILITY TQ PQMER OPERATION.

DISTRIBUTION CODE: A00iS ~ fW SIZE:

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COPIES RECEIVED: LTR ENCL TITLE: GENERAL DISTRlBUTION FQR AFTER ISSUANCE QF OPERATING LIC c 5 Z~C b c

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TOTAL NUNBER QF COPIES REQUIRED: LTTR 38 ENCL 38

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P. 0. Box 529100 Miami, Florida 33152 O'6 FLORIDA POWER 8 LIGHT COMPANY May 18, 1979 L-79-122 Office of Nuclear Reactor Regulation Attention: Mr. Victor Stello, Director Division of Operating Reactors U. S. Nuclear Regulatory Commission Washington, D. C. 20555

Dear Mr. Stello:

Re: Turkey Point Unit 4 Docket No. 50-251 Steam Generator Ins ections The results of the Turkey Point Unit 4 steam generator inspections conducted during the current outage are attached. The inspections which were performed in accordance with Turkey Point Unit 4 operating license DPR-41 showed no new phenomena and verified that the general pattern of denting in Unit 4 is within predictable limits and consis-tent with previous inspections of the Turkey Point Units.

The general criteria applied for steam generator inspections and pre-ventive plugging are the same as previously applied to Turkey Point Units 3 and 4, with an additional plugging criterion included to provide more conservatism. Additional tubes to provide in excess of 10 months of operation have been plugged. This approach provides reasonable assurance of steam generator tube integrity such that safe operation of the unit during normal full power operation and during hypothetical accident conditions is assured for an operating period in excess of 10 effective full power months. Therefore, the implementa-tion of this program with the resulting preventive plugging, enables continued safe full power operation of Turkey Point Unit 4 for a period in excess of 10 months.

Total steam generator tube plugging at the conclusion of the current outage will be approximately 20.6%. This is conservatively bounded by the 25% tube plugging ECCS analysis which has been previously submitted and the 22% tube plugging ECCS analysis which we plan to submit shortly.

The results of this inspection and the preventative tube plugging program have been reviewed by the Turkey Point Plant Nuclear Safety Committee and the Florida Power 8 Light Company Nuclear Review Hoard. They have concluded that based on the inspection results, the implemented plugging pattern, and previously submitted analysis, that the return of Turkey Point Unit 4 to full power operation for at least 10 effective months does not involve an unreviewed safety question.

PEOPLE... SERVING PEOPLE

N Mr. Victor Stello, Director Division of Operating Reactors U. S. Nuclear Regulatory Commission Page 2 In accordance with condition Dl of operating license DPR-41, Florida Power 8 Light Company requests permission to return Unit 4 to power operation. Based on our current schedule, we could be ready to resume power operation by June 1, 1979. We will keep you advised of any significant schedule changes.

Very truly yours, Robert ED Uhrig Vice President REU:GDW:cf Attachment cc: Mr. James P. O'Reilly, Region II Robert Lowenstein, Esquire