ML20207A846

Forwards Safety Evaluation Supporting Operation for Full Fuel Cycle W/O mid-cycle Insp for Crack Growth.Assurance That Cracks Not Subj to Unacceptable Growth in Current Fuel Cycle Provided in Util 860715 Submittal

ML20207A846
Person / Time
Site:	Brunswick
Issue date:	10/05/1986
From:	Muller D Office of Nuclear Reactor Regulation
To:	Utley E CAROLINA POWER & LIGHT CO.
Shared Package
ML20207A848	List: ML20207A846 ML20207A853
References
NUDOCS 8611110338
Download: ML20207A846 (2)

Text

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OCT 51986 Docket No. 50-324 DISTRIBUTION Docket File a"l SNorris BGrimes OPA NRC. POR ~ ' ESylvester LFMB .TBarahart(4)

Mr. E. E. Utley Local PDR NThompson 0GC-Beth WJones Senior Executive Vice President -EButcher LJHarmon DVassallo JPartlow

? Power Supply and Engineering & Construction Plant File EJordan ACRS(10)

Carolina Power & Light Company RBernero Post Office Box 1551 Raleigh, North Carolina 27602

SUBJECT:

INTERGRANULAR STRESS CORR 0SION CRACKING (IGSCC) - MID-CYCLE INSPECTION Re: Brunswick Steam Electric Plant, Unit 2 By letter dated July 15, 1986, youprovidedinformationtohustify operation of Brunswick Steam Electric Plant Unit 2 (Brunswick 2) for a full fuel cycle of 12,000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> without a mid-cycle inspection of the unrepaired cracks in two nozzle-to-safe-end welds.. The contents of this letter were discussed with the NRC in a meeting on July 16, 1986. The July 15,1986f submittal was made in response to our letter of June 12, 1986 which provided the results of our review of your Reload 6 IGSCC program. We reconsnended that R a mid-cycle inspection should be performed to provide assurance thatithe unrepaired cracks in the two welds would not experience excessive. growth during the current Fuel Cycle 7; operation.

We have completed our. review of the information provided by your July 15,'1986 submittal; the enclosed Safety Evaluation provides the results of our review.

We have determined that adequate assurance has been provided that the unrepaired cracks in the two nozzi.'-to-safe-end welds will not experience unacceptable crack growth in the current fuel cycle. We therefore conclude that Brunswick 2 can continue to operate for a full fuel cycle of 12,000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> without a mid-cycle inspection for crack growth.

Sincerely, Original signed by Daniel R. Muller Daniel R. Muller, Director BWR Project Directorate #2 Division of BWR Licensing i

Enclosure:

As stated 861111o338 PDR 861005 ADOCK 05000324 cc w/ enclosure: G PDR

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DATE :l0/A7/86 :to /77/86  :/ / #/86 N/J/86  :  :  :

OFFICIAL RECORD COPY

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Mr. E. E. Utley Brunswick Steam Electric Plant Carolina Power & Light Company Units 1 and 2 cc:

Mr. P. W. Howe Mr. C. R. Dietz Vice President Plant General Manager Brunswick Nuclear Project Brunswick Nuclear Project Box 10429 Box 10429 Southport, North Carolina 28461 Southport, North Carolina 28461 Thomas A. Baxter, Esquire Mr. H. A. Cole Shaw, Pittman, Potts & Trowbridge Special Deputy Attorney General 2300 N Street, N. W. State of North Carolina Washington, D. C. 20037 Post Office Box 629 Raleigh, North Carolina 27602 Mr. D. E. Hollar Associate General Counsel Mr. Robert P. Gruber Carolina Power & Light Company Executive Director Post Office Box 1551 Public Staff - NCUC Raleigh, North Carolina 27602 Post Office Box 29520 Raleigh, North Carolina 27626-Ob20 Mr. Christopher Chappell, Chairman Board of Commissioners -

Post Office Box 249 Bolivia, North Carolina 28422 Mrs. Chrys Baggett State Clearinghouse budget and Management 116 West Jones Street Raleigh, North Carolina 27603 Resident Inspector U. S. Nuclear Regulatory Connission Star Route 1 Post Office Box 208 Southport, North Carolina 28461 Regional Administrator, Region II U. S. Nuclear Regulatory Commission 101 Marietta Street, Suite 2900 Atlanta, Georgia 30303

. Mr. Dayne H. Brown, Chief Radiation Protection Branch Division of Facility Services -

N. C. Department of Human Resources 701 Barbour Drive Raleigh, North Carolina 27603-2008

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