ML11280A045

Summary of Telephone Conference Call Held on May 5, 2011, Between the U.S. Nuclear Regulatory Commission and NextEra Energy Seabrook, LLC, Concerning Clarification of Information Pertaining to the Seabrook Station LRA

ML11280A045
Person / Time
Site:	Seabrook
Issue date:	10/17/2011
From:	Plasse R License Renewal Projects Branch 2
To:	NextEra Energy Seabrook
Plasse R
References
TAC ME4028
Download: ML11280A045 (6)

Text

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LICENSEE: NextEra Energy Seabrook, LLC FACILITY: Seabrook Station

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON MAY 5, 2011, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND NEXTERA ENERGY SEABROOK, LLC, CONCERNING CLARIFICATION OF INFORMATION PERTAINING TO THE SEABROOK STATION LICENSE RENEWAL APPLICATION (TAC NO. ME4028)

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of NextEra Energy Seabrook, LLC (NextEra or the applicant), held a telephone conference call on May 5, 2011, to obtain clarification on information contained in the Seabrook Station license renewal application (LRA). The telephone conference call was useful in clarifying the applicanfs information in the LRA.

Enclosure 1 provides a listing of the participants and Enclosure 2 contains a summary of the issues discussed during the call with the applicant.

The applicant had an opportunity to comment on this summary.

4l1VVvvy Rick Plasse, Project Manager Projects Branch 2 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-443

Enclosures:

As stated cc w/encls: Listserv

TELEPHONE CONFERENCE CALL SEABROOK STATION LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS May 5,2011 PARTICIPANTS AFFILIATIONS Kim Green U.S. Nuclear Regulatory Commission (NRC)

Andrew Prinaris NRC Ching Ng NRC Jim Medoff NRC Richard Cliche NextEra Energy Seabrook, LLC. (NextEra)

Paul Willoughby NextEra Ed Carley NextEra ENCLOSURE 1

TELEPHONE CONFERENCE CALL SEABROOK STATION LICENSE RENEWAL APPLICATION

1. License renewal application (LRA) Section 4.6.1 In LRA Section 4.6.1, the applicant stated the following:

The Seabrook Station analyses confirmed the 40-year anticipated stress cycles listed below would satisfy the exemption criteria of NE 3221.5(d).

Atmospheric-to-service pressure cycles (120 cycles)

Temperature difference from Startup to Shutdown (120 cycles)

Operating Basis Earthquake (500 cycles)

LOCA (10 cycles)

However, in the updated final safety analysis report (UFSAR) Section 3.8.1.3, the applicant states the following:

Cyclic Loading The various cycles loads were considered in the design. The following design conditions were considered in the fatigue analysis:

120 cycles start and shutdown 500 OBE cycles 100 SSE cycles 1 accident cycle (LOCA)

The staff asked for the following clarification:

a. What is the difference between the startup and shutdown cycles presented in the LRA and in the UFSAR?

Response: NextEra clarified that the 120 cycles for plant startups and shutdowns cited in the UFSAR was used to determine both the thermal and the pressure cycles of 120 used in the time-limited aging analysis (TLAA) and explained that the pressure cycles are derived from the thermal cycles (also 120 cycles both in the LRA and in the UFSAR).

b. Why did NextEra use 10 accident cycles (LOCA) in the TLAA?

Response: NextEra stated that it used 10 cycles for conservatism in the TLAA, but its design basis load is 1 cycle (LOCA) as stated in the UFSAR.

ENCLOSURE 2

2

2. LRA Section 4.6.2 In LRA Section 4.6.2, the applicant stated that, 'The design of the containment penetrations did not involve cyclic evaluations and therefore are not considered TLAAs:'

For the piping and electrical penetrations, the staff reviewed UFSAR 3.8.2.4 titled "Design and Analysis Procedures;' parts (d), (e), and (f) titled "High Energy Piping Penetrations;"'Moderate Energy Piping Penetrations;' and "Electrical Penetrations'respectively. The staff asked for clarification regarding no TLAAs for penetrations. Additionally, the staff asked for clarification on whether mechanical piping going through the penetrations are also TLAAs.

Response

NextEra stated that its Architect-Engineer was United Engineers and Constructors, and that the A-E did not perform cyclic analyses for the containment penetrations.

With regard to the mechanical piping that goes through the penetrations, the applicant stated that the piping is ASME Code Class 2 piping, and the TLAAs (which are implicit) for that piping are addressed in LRA Section 4.3.7. The applicant also referred the staff to its request for additional information response dated April 22, 2011.

October 17, 2011 LICENSEE: NextEra Energy Seabrook, LLC FACILITY: Seabrook Station

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON MAY 5, 2011, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND NEXTERA ENERGY SEABROOK, LLC, CONCERNING CLARIFICATION OF INFORMATION PERTAINING TO THE SEABROOK STATION LICENSE RENEWAL APPLICATION (TAC NO. ME4028)

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of NextEra Energy Seabrook, LLC (NextEra or the applicant), held a telephone conference call on May 5, 2011, to obtain clarification on information contained in the Seabrook Station license renewal application (LRA). The telephone conference call was useful in clarifying the applicant's information in the LRA. provides a listing of the participants and Enclosure 2 contains a summary of the issues discussed during the call with the applicant.

The applicant had an opportunity to comment on this summary.

IRA!

Rick Plasse, Project Manager Projects Branch 2 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-443

Enclosures:

As stated cc w/encls: Listserv DISTRIBUTION:

See next page ADAMS Accession No'" ML11280A045 OFFICE LA:DLR PM:RPB1:DLR BC:RPB1 :DLR PM:RPB1:DLR NAME SFigueroa RPlasse DMorey RPlasse DATE 1017111 10/07/11 10/09/11 10/17/11 OFFICIAL RECORD COpy

Memorandum to NextEra Energy from R. Plasse dated October 17, 2011 SUB..IECT:

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON MAY 5,2011, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND NEXTERA ENERGY SEABROOK, LLC, CONCERNING CLARIFICATION OF INFORMATION PERTAINING TO THE SEABROOK STATION LICENSE RENEWAL APPLICATION (TAC NO. ME4028)

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