ML092150092

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Request for Additional Information (RAI) from Electrical Engineering Branch Alternate Source Term
ML092150092
Person / Time
Site: Point Beach  
Issue date: 08/07/2009
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: ML092150092 (3)


Text

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~O 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 FROM ELECTRICAL ENGINEERING BRANCH RE: 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, and July 24, 2009 (Agencywide Documents Access and Management System (ADAMS)

Accession Nos. ML083450683, ML090160571, ML090280348, ML090540860, ML091100182, ML091100215, ML091380113, ML091560413, and ML091950072, 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 submittals 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 July 30, 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.

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

REQUEST FOR ADDITIONAL INFORMATION POINT BEACH NUCLEAR POWER PLANT, UNITS 1 AND 2 DOCKET NOS. 50-266 AND 50-301

1.

Provide the loading sequence for each emergency diesel generator (EDG) at Point Beach Nuclear Plant (PBNP). In your response, describe the changes that have been made to the EDG loading sequence to support this license amendment request (LAR).

2.

Describe how the loads being added to the PBNP EDGs (i.e., control room emergency filtration system (CREFS) and primary auxiliary building ventilation system (VNPAB) components) affect the capability and capacity of the EDGs (e.g., describe the impact of the proposed change on the EDG ratings).

3.

Given that the VNPAB is a non-safety related system, describe how this system will be electrically separated from the safety-related system (Le., provide a detailed discussion on how a fault on the non-Class 1E electrical circuit will not propagate to the Class 1E electrical circuit). Also describe the independence (e.g., electrical and physical separation) and redundancy of these systems.

4.

Describe how the CREFS and VNPAB meet the single-failure criterion.

5.

Describe how the operators will be notified in the event that either the CREFS or the VNPAB would become inoperable (e.g., control room annunciators).

6.

Provide a list and description of components being added to your 10 CFR 50.49 program due to this LAR. Confirm that these components are qualified for the environmental conditions they are expected to be exposed to.

7.

The licensee proposed utilizing the containment spray (CS) during the sump recirculation phase, if required due to radiological conditions and/or core damage. In addition, the licensee proposed modifying the CS and residual heat removal (RHR) systems to provide throttling capability of CS and RHR during the emergency core cooling system recirculation phase. Describe the impact of the above proposed actions on environmental conditions (such as temperature, pressure) and any impact on equipment qualification (EQ).

8.

The licensee has submitted extended power uprate and auxiliary feedwater modification submittals. Describe any impact of these submittals on alternate source term (AST) LAR.

9.

The licensee stated that the radiation monitors actuation signals are diverse and that the radiation monitors are of augmented quality status. The licensee also stated that VNPAB components credited for AST will be upgraded to an augmented quality status. Explain what is meant by augmented quality status.

10. The licensee stated that boron concentration in the refueling water storage tank is conservatively assumed to be 3500 ppm. Explain the basis for this assumption. In your response, describe the change in chemical composition of the chemical spray and its impact on EQ.

August 7,2009 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 FROM ELECTRICAL ENGINEERING BRANCH RE: 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, and July 24, 2009 (Agencywide Documents Access and Management System (ADAMS)

Accession Nos. ML083450683, ML090160571, ML090280348, ML090540860, ML091100182, ML091100215, ML091380113, ML091560413, and ML091950072, 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 submittals 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 July 30, 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 RidsNrrLABTully Resource LPL3-1 r/f RidsNrrPMPointBeach Resource RidsNrrDorlLpl3-1 Resource NPatel, NRR RidsRgn3MailCenter Resource RidsOgcRp Resource MMcConnell, NRR RidsAcrsAcnw_MailCTR Resource RidsNrrDirsltsb Resource GWilson, NRR RidsNrrDorlDpr Resource ADAMS Accession Number: ML092150092

  • per memo dated July 30, 2009 OFFICE LPL3-lIPM LPL3-1/LA NRR/EEEB/BC LPL3-1/BC NAME

.IPoole BTully (THarris for)

RMatthew for GWilson*

LJames (PTam for)

DATE 8/7/09 8/6/09 7/30109 8/7109 OFFICIAL RECORD COPY