ML021130556

Request for Additional Information, Proposed License Amendment Request No.23, Rev. 0 (TAC Mb 2499)

ML021130556
Person / Time
Site:	Crystal River
Issue date:	04/23/2002
From:	Goshen J NRC/NRR/DLPM/LPD2
To:	Young D Florida Power Corp
Goshen, JM, NRR/DLPM, 415-1437
References
TAC MB2499
Download: ML021130556 (4)

Text

April 23, 2002 Mr. Dale E. Young, Vice President Crystal River Nuclear Plant (NA1B)

ATTN: Supervisor, Licensing and Regulatory Programs 15760 W. Power Line Street Crystal River, Florida 34428-6708

SUBJECT:

CRYSTAL RIVER UNIT 3 REQUEST FOR ADDITIONAL INFORMATION RE: PROPOSED LICENSE AMENDMENT REQUEST NO. 263, REVISION 0, RELOCATION OF REACTOR COOLANT SYSTEM PARAMETERS TO THE CORE OPERATING LIMITS REPORT AND 20 PERCENT STEAM GENERATOR TUBE PLUGGING (TAC NO. MB2499)

Dear Mr. Young:

By letter dated July 24, 2001 (3F0701-11), you submitted an amendment application to revise the Crystal River Unit 3 (CR-3) Improved Technical Specifications Tables 3.3.1-1, 3.4.1, and 5.6.2.18 to relocate the reactor coolant system parameters to the Core Operating Limits Report and to increase the steam generator tube plugging limit to 20 percent. The staff is currently reviewing your request, and the reviewers have determined that additional information is needed. The question, listed below, was previously discussed with the staff in a March 28, 2002, telephone call.

In Attachment F, Section D.4, Secondary System Performance and Integrity, of your July 24, 2001, letter, Florida Power Corporation (FPC) concluded that the Flow Induced Vibration (FIV) of the tubes will not be significantly affected by a symmetric tube plugging distribution because the tube plugging would result in insignificant increase in dynamic pressure. For an asymmetric plugging distribution situation, FPC stated that the refinement of FIV analyses could allow for increased feedwater flow under limited power operations. However, the staff noted that it is not clear what effect would increased FIV have, under the asymmetric plugging distribution and full power, on steam generator tube integrity. The staff noted also that potential FIV of once-through steam generator tubes could be subjected to 2-phase flow, vortex shedding, fluid-elastic instability, and turbulence-induced vibration. Therefore, staff requests that FPC provide the results of FIV reassessment calculations or analyses to demonstrate the functional integrity of the steam generator tubes due to increase in steam generator tube plugging up to 20 percent under full power operations for symmetric and worst-case asymmetric plugging distributions. The staff expects that the results will include the fluid-elastic stability margin, input parameters used such as stability constant and viscous damping value, and the impact on wear due to turbulence-induced vibrations.

D. Young For the staff to complete its review schedule, your response is appreciated within 30 days from your receipt of this letter. This date was mutually agreed upon in a telephone conversation with CR-3 personnel on March 28, 2002. If circumstances result in the need to revise the target date, please call me at the earliest opportunity at 301-415-1437.

Sincerely,

/RA/

John M. Goshen, Project Manager, Section 2 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-302 cc: See next page

D. Young For the staff to complete its review schedule, your response is appreciated within 30 days from your receipt of this letter. This date was mutually agreed upon in a telephone conversation with CR-3 personnel on March 28, 2002. If circumstances result in the need to revise the target date, please call me at the earliest opportunity at 301-415-1437.

Sincerely,

/RA/

John M. Goshen, Project Manager, Section 2 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-302 cc: See next page DISTRIBUTION: P Chen (e-mail)

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Florida Power Corporation CRYSTAL RIVER UNIT NO. 3 GENERATING PLANT cc:

Mr. R. Alexander Glenn Chairman Associate General Counsel (MAC-BT15A) Board of County Commissioners Florida Power Corporation Citrus County P.O. Box 14042 110 North Apopka Avenue St. Petersburg, Florida 33733-4042 Inverness, Florida 34450-4245 Mr. Daniel L. Roderick Ms. Sherry L. Bernhoft Plant General Manager Manager Regulatory Affairs Crystal River Nuclear Plant (NA2C) Crystal River Nuclear Plant (NA2H) 15760 W. Power Line Street 15760 W. Power Line Street Crystal River, Florida 34428-6708 Crystal River, Florida 34428-6708 Mr. Michael A. Schoppman Senior Resident Inspector Framatome ANP Crystal River Unit 3 1911 North Ft. Myer Drive, Suite 705 U.S. Nuclear Regulatory Commission Rosslyn, Virginia 22209 6745 N. Tallahassee Road Crystal River, Florida 34428 Mr. William A. Passetti, Chief Department of Health Mr. Richard L. Warden Bureau of Radiation Control Manager Nuclear Assessment 2020 Capital Circle, SE, Bin #C21 Crystal River Nuclear Plant (NA2C)

Tallahassee, Florida 32399-1741 15760 W. Power Line Street Crystal River, Florida 34428-6708 Attorney General Department of Legal Affairs The Capitol Tallahassee, Florida 32304 Mr. Joe Myers, Director Division of Emergency Preparedness Department of Community Affairs 2740 Centerview Drive Tallahassee, Florida 32399-2100