ML093630246

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Request for Additional Information Regarding Alternative Source Term
ML093630246
Person / Time
Site: Point Beach  NextEra Energy icon.png
Issue date: 01/05/2010
From: Justin Poole
Plant Licensing Branch III
To: Meyer L
Point Beach
Poole Justin/DORL/LPL3-1/ 301-415-2048
References
TAC ME0219, TAC ME0220
Download: ML093630246 (3)


Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 January 5, 2010 Mr. Larry Meyer Site Vice President NextEra Energy Point Beach, LLC 6610 Nuclear Road Two Rivers, WI 54241-9516

SUBJECT:

POINT BEACH NUCLEAR PLANT, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION REGARDING ALTERNATE SOURCE TERM (TAC NOS. ME0219 AND ME0220)

Dear Mr. Meyer:

By letter to the U.S. Nuclear Regulatory Commission (NRC) dated December 8, 2008, as supplemented by letters dated January 16 and 27, February 20, two letters on April 17, May 15, June 1, July 24, August 20, two letters on September 4, two letters on September 10, October 2, and November 25, 2009 (Agencywide Documents Access and Management System (ADAMS)

Accession Nos. ML083450683, ML090160571, ML090280348, ML090540860, ML091100182, ML091100215, ML091380113, ML091560413, ML091950072, ML092330180, ML092510118, ML092520547, ML092540144, ML092540146, ML092750348, and ML093290322, respectively),

FPL Energy Point Beach, LLC, submitted a request to revise the current licensing basis to implement the alternate source term through reanalysis of the radiological consequences of the Final Safety Analysis Report Chapter 14 accidents.

The NRC staff is reviewing your submittal and has determined that additional information is required to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on December 18, 2009, it was agreed that you would provide the additional information within 30 days of the date of this letter.

The NRC staff considers that timely responses to requests for additional information help ensure sufficient time is available for staff review and contribute toward the NRC's goal of efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-2048.

Sincerely. /2

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ustin C. Poole, Project Manager Plant Licensing Branch 111-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-266 and 50-301

Enclosure:

Request for Additional Information cc w/encl: Distribution via ListServ

REQUEST FOR ADDITIONAL INFORMATION POINT BEACH NUCLEAR POWER PLANT, UNITS 1 AND 2 DOCKET I\\JOS. 50-266 AND 50-301 Based on a previous phone call with the licensee regarding Point Beach Nuclear Plant's (PBNP) alternate source term (AST) submittal, it is Nuclear Regulatory Commission's (NRC) understanding that, for both the control room ventilation system and the primary auxiliary building ventilation system, a 7-day allowed outage time is needed for maintenance. During this time, both trains of each system will be out of service, depending on which component is being worked on. NRC staff assessment of quantifiable design-basis accident (DBA) consequences during this outage time appears to yield unacceptable doses. However, the probability of a DBA during this same time is unquantified; therefore, the risk of the newly proposed technical specification (TS) outage time is unknown. Given the unquantified and unknown risk, the NRC staff has determined that additional information is needed for the completion its safety evaluation.

1. Please provide additional information describing PBNP's proposed AST analyses results with and without credit for the control room ventilation system and the primary auxiliary building ventilation system. Include a discussion of the margin, available compensatory measures, etc.
2. Given that during control room ventilation system allowed outage time of 7 days meeting the control room dose criterion is questionable, please provide additional information describing the basis for the proposed removal the PBNP licensing basis compensatory action to use potassium iodide in the event of a DBA.
3. Please provide additional information describing the expected frequency of the maintenance activities that would be undertaken during the allowed outage times for both of these systems. Please include a discussion of the controls that would ensure that both of these systems would not be in their respective allowed outage times concurrently.
4. The proposed 7-day PAB ventilation system (VNPAB) allowed outage time (AOT) is 7 times the AOT identified in the improved Standard Technical Specifications for the comparable two train, independent and redundant, (PREACS) system. Please provide technical information (Le., PBI\\JP robustness/uniqueness of design, conservatisms, assumptions, etc.) to justify the proposed VNPAB 7-day AOT.

ENCLOSURE

Mr. Larry Meyer Site Vice President NextEra Energy Point Beach, LLC 6610 Nuclear Road Two Rivers, WI 54241-9516

SUBJECT:

POINT BEACH NUCLEAR PLANT, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION REGARDING ALTERNATE SOURCE TERM (TAC NOS. ME0219 AND ME0220)

Dear Mr. Meyer:

By letter to the U.S. Nuclear Regulatory Commission (NRC) dated December 8, 2008, as supplemented by letters dated January 16 and 27, February 20, two letters on April 17, May 15, June 1, July 24, August 20, two letters on September 4, two letters on September 10, October 2, and November 25, 2009 (Agencywide Documents Access and Management System (ADAMS)

Accession Nos. ML083450683, ML090160571, ML090280348, ML090540860, ML091100182, ML091100215, ML091380113, ML091560413,ML091950072, ML092330180,ML092510118, ML092520547, ML092540144, ML092540146, ML092750348, and ML093290322, respectively),

FPL Energy Point Beach, LLC, submitted a request to revise the current licensing basis to implement the alternate source term through reanalysis of the radiological consequences of the Final Safety Analysis Report Chapter 14 accidents.

The NRC staff is reviewing your submittal and has determined that additional information is required to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on December 18, 2009, it was agreed that you would provide the additional information within 30 days of the date of this letter.

The NRC staff considers that timely responses to requests for additional information help ensure sufficient time is available for staff review and contribute toward the NRC's goal of efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-2048.

Sincerely, IRA!

Justin C. Poole, Project Manager Plant Licensing Branch 111-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-266 and 50-301

Enclosure:

Request for Additional Information cc w/encl: Distribution via ListServ DISTRIBUTION PUBLIC RidsNrrLATHarris Resource LPL3-1 r/f RidsNrrPMPointBeach Resource RidsNrrDorlLpl3-1 Resource DDuvigneaud, NRR RidsRgn3MailCenter Resource RidsOgcRp Resource ABoatright, NRR RidsAcrsAcnw_MailCTR Resource RidsNrrDirsltsb Resource HWalker, NRR RidsNrrDorlDpr Resource GWaig, NRR NKaripineni, NRR ADAMS Accession Number' ML093630246 OFFICE LPL3-1/PM LPL3-1/LA NRRlITSB/BC NRRlAADB/BC LPL3-1/BC NAME JPoole THarris RElliott nate RPascarelli DATE 01/04/10 12/30/09 01/04/10 01/04/10 01/05/10 OFFICIAL RECORD COpy