ML031490722

Request for Additional Information, New Departure from Nucleate Boiling Correlation

ML031490722
Person / Time
Site:	Crystal River
Issue date:	05/29/2003
From:	Mozafari B NRC/NRR/DLPM/LPD1
To:	Young D Florida Power Corp, Progress Energy Florida
mozafari B, NRR/DLPM, 415-2020
References
TAC MB7035
Download: ML031490722 (4)

Text

May 29, 2003 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 REGARDING TECHNICAL SPECIFICATION CHANGE REQUEST FOR NEW DEPARTURE FROM NUCLEATE BOILING CORRELATION (TAC NO. MB7035)

Dear Mr. Young:

By letter dated December 19, 2002, as supplemented May 9, 2003, Florida Power Corporation (the licensee, also doing business as Progress Energy Florida, Inc.) requested a change to the Improved Technical Specification (ITS) 2.1.1, Reactor Core Safety Limits. Specifically, the licensee proposed to revise ITS 2.1.1.2, which provides Departure from Nucleate Boiling (DNB)

Safety Limits for Crystal River Unit 3. The licensee requested this revision to incorporate a new DNB correlation for Mark-B-HTP fuel that will be used during Cycle 14 operations. This correlation for Mark-B-HTP fuel ensures the safety limits that prevent damage to the fuel cladding are met.

For the NRC staff to complete its review on schedule, your response to the enclosed request for additional information (RAI) is requested no later than July 14, 2003. The date for the RAI response was mutually agreed upon in a telephone conversation with Paul Infanger on May 14, 2003. If you need to revise the target date, please call me at the earliest opportunity at 301-415-2020.

Sincerely,

/RA/

Brenda L. Mozafari, Senior Project Manager, Section 2 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-302

Enclosure:

As stated cc w/encl: See next page

May 29, 2003 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 TECHNICAL SPECIFICATION CHANGE REQUEST FOR NEW DEPARTURE FROM NUCLEATE BOILING CORRELATION (TAC NO. MB7035)

Dear Mr. Young:

By letter dated December 19, 2002, as supplemented May 9, 2003, Florida Power Corporation (the licensee, also doing business as Progress Energy Florida, Inc.) requested a change to the Improved Technical Specification (ITS) 2.1.1, Reactor Core Safety Limits. Specifically, the licensee proposed to revise ITS 2.1.1.2, which provides Departure from Nucleate Boiling (DNB)

Safety Limits for Crystal River Unit 3. The licensee requested this revision to incorporate a new DNB correlation for Mark-B-HTP fuel that will be used during Cycle 14 operations. This correlation for Mark-B-HTP fuel ensures the safety limits that prevent damage to the fuel cladding are met.

For the NRC staff to complete its review on schedule, your response to the enclosed request for additional information (RAI) is requested no later than July 14, 2003. The date for the RAI response was mutually agreed upon in a telephone conversation with Paul Infanger on May 14, 2003. If you need to revise the target date, please call me at the earliest opportunity at 301-415-2020.

Sincerely,

/RA/

Brenda L. Mozafari, Senior Project Manager, Section 2 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-302

Enclosure:

As stated cc w/encl: See next page DISTRIBUTION:

PUBLIC J. Munday PDII-2 Reading J. Uhle (email)

R. Taylor (email) E. Dunnington (Hardcopy)

A. Howe (email) OGC B. Mozafari ACRS ADAMS ACCESSION NO. ML031490722 OFFICE PDII-2/PM PDII-2/LA PDII-2/SC NAME BMozafari EDunnington AHowe DATE 05/28/03 05/28/03 05/29/03 OFFICIAL RECORD COPY

Request for Additional Information Crystal River Unit 3, License Amendment BHTP Departure from Nucleate Boiling Correlation

1. By supplement dated May 9, 2003, Florida Power Corporation (the licensee) provided additional information to describe the normal and accident analyses performed in support of its amendment request for Crystal River Unit 3 (CR-3). The licensee identified and analyzed the limiting Departure from Nucleate Boiling (DNB) transients for each of the Condition I, II, III, and IV events for CR-3 in lieu of reanalyzing all of the transients. The NRC staff requests the licensee technically justify why each of the events is the most limiting for DNB. Additionally, the NRC staff requests that the licensee state whether it will reanalyze all of the remaining events prior to reloading the core to ensure appropriate safety limits are met.

2. In its analysis of the DNB limiting accidents for Condition I/II events, the licensee stated that the analysis was done assuming a full core of Mark-B-HTP fuel. The NRC staff requests the licensee provide a technical justification that demonstrates that the assumption of a Mark-B-HTP full core results in more limiting DNB accident analyses than either the Cycle 14 transition core or a full core of Mark-B10 fuel.

3. In the licensees discussion of the limiting Condition IV event, it stated that additional unused DNB margin existed above the amount required to satisfy its Alternative Source Term (AST) dose evaluations. However, the licensee provided numerical data that could be interpreted as demonstrating that the amount of margin available is less than that stated. The NRC staff requests the licensee identify the minimum DNB limit for Condition IV events that ensures its AST limits are not violated.

4. In support of its license amendment request, the licensee cited various topical reports used to perform its analyses. The NRC staff requests the licensee review each of the topical reports referenced and provide a list of restrictions and requirements imposed on each by the NRC during its acceptance review. The licensee should include a response to each that describes how it complied with the restriction or requirement and justify their applicability to CR-3.

5. The licensees original submittal and its supplement did not describe how the licensee demonstrated compliance with 10 CFR 50.46, Acceptance criteria for emergency core cooling systems for light-water nuclear power reactors. The NRC staff requests the licensee provide information demonstrating that it has performed an appropriate analysis for its core loaded in the proposed Cycle 14 configuration.

Enclosure

Mr. Dale E. Young Crystal River Nuclear Plant, Unit 3 Florida Power Corporation 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. Jon A. Franke Mr. Donald L. Taylor Plant General Manager Manager Support Services Crystal River Nuclear Plant (NA2C) Crystal River Nuclear Plant (NA2C) 15760 W. Power Line Street 15760 W. Power Line Street Crystal River, Florida 34428-6708 Crystal River, Florida 34428-6708 Mr. Jim Mallay Mr. Daniel L. Roderick Framatome ANP Director Site Operations 1911 North Ft. Myer Drive, Suite 705 Crystal River Nuclear Plant (NA2C)

Rosslyn, Virginia 22209 15760 W. Power Line Street Crystal River, Florida 34428-6708 Mr. William A. Passetti, Chief Department of Health Senior Resident Inspector Bureau of Radiation Control Crystal River Unit 3 2020 Capital Circle, SE, Bin #C21 U.S. Nuclear Regulatory Commission Tallahassee, Florida 32399-1741 6745 N. Tallahassee Road Crystal River, Florida 34428 Attorney General Department of Legal Affairs Mr. Richard L. Warden The Capitol Manager Nuclear Assessment Tallahassee, Florida 32304 Crystal River Nuclear Plant (NA2C) 15760 W. Power Line Street Mr. Craig Fugate, Director Crystal River, Florida 34428-6708 Division of Emergency Preparedness Department of Community Affairs Steven R. Carr 2740 Centerview Drive Associate General Counsel - Legal Dept.

Tallahassee, Florida 32399-2100 Progress Energy Service Company, LLC Post Office Box 1551 Raleigh, North Carolina 27602-1551