ML12137A179

From kanterella
Revision as of 15:15, 20 March 2020 by StriderTol (talk | contribs) (StriderTol Bot change)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Forthcoming Pre-submittal Public Meeting with Exelon Generation Company, LLC Regarding LaSalle Extended Power Uprate Replacement Steam Dryer
ML12137A179
Person / Time
Site: Peach Bottom, LaSalle  Constellation icon.png
Issue date: 05/17/2012
From: Nicholas Difrancesco
Plant Licensing Branch III
To: Jacob Zimmerman
Plant Licensing Branch III
Nicholas DiFrancesco
References
TAC ME7495, TAC ME7496
Download: ML12137A179 (13)


Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555*0001 May 17, 2012 MEMORANDUM TO: Jacob I. Zimmerman, Chief Plant Licensing Branch 111-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation FROM: Nicholas DiFrancesco, Project Manager Plant Licensing Branch 111-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

SUBJECT:

FORTHCOMING PRE-SUBMITTAL PUBLIC MEETING WITH EXELON GENERATION COMPANY, LLC REGARDING LASALLE EXTENDED POWER UPRATE REPLACEMENT STEAM DRYER (TAC NOS. ME7495 AND ME7496)

DATE & TIME: Monday, June 11, 2012 Time 1:30 p.m. - 4:00 p.m. - Eastern Daylight Time (EDT)

LOCATION: U.S. Nuclear Regulatory Commission One White Flint North Conference Room (07-B04) 11545 Rockville Pike Rockville, Maryland PURPOSE: NRC and Exelon staff will discuss a proposed license amendment request related to the Extended Power Uprate (EPU) for LaSalle Units 1 and 2 and the Replacement Steam Dryers (RSD) licensing approach. For additional background, a Peach Bottom public meeting was held on April 5. 2012, which presented an overview of the RSD plans for Peach Bottom and LaSalle (Agencywide Documents Access and Management System (ADAMS)

Accession Number ML120970633).

CATEGORY 1:* This is a Category 1 public meeting. Proprietary information may be discussed during significant portions of this meeting. These portions of the meeting will be closed to members of the public who have not been granted access to the information by the owners of the information.

  • Commission's Policy Statement on "Enhancing Public Participation in NRC Meetings" (67 FR 36920), May 28,2002.

J. Zimmerman -2 PARTICIPANTS: Participants from the NRC include members of the Office of Nuclear Reactor Regulation (NRR).

NRC/NRR EXELON J. Zimmerman S. Ainger M. Murphy J. Rommel W.Jessup K. Borton C. Basavaraju D. Foryth (Westinghouse)

M. Chakrapani R. Dennis (Westinghouse)

K. Manoly B. Maurer (Westinghouse)

N. DiFrancesco et. al.

H. Rodriguez et. al.

Interested members of the public can participate in this meeting via a toll-free audio teleconference. Please call one of the meeting contacts listed below before Thursday, June 7,2012, 2:00pm EDT to get the telephone number and the pass code.

MEETING CONTACTS: Hector L. Rodriguez-Luccioni Nicholas DiFrancesco, NRR 301-415-2678 301-415-1115 Hector. Rodriguez-Luccioini@nrc.gov Nicholas. DiFrancesco@nrc.gov The NRC provides reasonable accommodation to individuals with disabilities where appropriate.

If you need a reasonable accommodation to participate in a meeting, or need a meeting notice or a transcript or other information from a meeting in another format (e.g., Braille, large print),

please notify the NRC's meeting contact. Determinations on requests for reasonable accommodation will be made on a case-by-case basis.

To receive a summary of this meeting and begin receiving other plant-specific e-mail distributions, you must subscribe to the Operating Reactor Correspondence electronic distribution for this plant via http://www. nrc.gov/public-involve/listserver/plants-by-reg ion. htrnl.

Once subscribed, if you wish to discontinue receiving electronic distribution, you may unsubscribe at any time by visiting the same web address above.

Docket Nos. 50-373, 50-374, 50-277 and 50-278

Enclosure:

1. Agenda
2. Pre-Submittal Check List cc w/encl: Distribution via Listserv

AGENDA FORTHCOMING PUBLIC MEETIING WITH EXELON GENERATION COMPANY, LLC LASALLE COUNTY STATION DOCKET NOS. 50-373 AND 50-374 MONDAY, JUNE 11, 2012 TIME 1:30 PM. - 4:00 PM 1:30 p.m. Introductions 1:45 p.m. Review of Licensing Approach 2:00 p.m. Parameters Comparing Non-prototype to Prototype Steam Dryer 2:45 p.m. Approach to Signal Processing of Data 3:05 p.m. Summary and Conclusions 3:15 p.m. Public comments/Questions Break

                                                              • NON-PUBLIC PORTION OF MEETING*********************************

3:25 p.m. Proprietary closed session if needed for staff questions 3:50 p.m. Summary and Conclusions 4:00 p.m. Adjourn Enclosure 1

Presubmittal Guidance Checklist - LaSalle EPU Pre-Submittal Meeting for Replacement Steam Dryers Scheduled 06/11/2012 Page 1 of 9 Proposed Licensing Action: Extended Power Uprate (EPU)

Licensee/Plant: Exelon/LaSalie Units 1 and 2, Peach Bottom Units 2 and 3 License Amendment Request Exemption Request er U Detailed Description of the Proposed Licensing Action:

Pursuant to 10 CFR 50.90, these proposed amendments for EPU would increase each LaSalle unit's licensed core power level from 3546 megawatts thermal (MWt) to 3988 MWt (approximately 13%) and Peach Bottom unit's licensed core power level from 3514 MWt to 3951 MWt (approximately 12.4%). Additionally, the proposed amendments revise, as required, technical specifications for LaSalle Units 1 and 2 and Peach Bottom Units 2 and 3 to support operations at the increased core thermal power level in accordance with the Constant Pressure Power Uprate Licensing Topical Report (CL TR) NEOC-33004P-A. As Dart of this application, a steam dryer evaluation at EPU power levels will be submitted. This evaluation is based on a replacement steam dryer (RSO).

~, ... _.. _._----------

Planned Submittal Date: The license amendment requests {LAR)s will be submitted Requested Approval Date & Basis:

LaSalle: Second Quarter 2014 to support Unit 2 implementation during the First Quarter 2015 refueling outage and Unit 1 implementation during tt1e First Quarter 2016 refuelino outage.

Peach Bottom: Second Quarter 2014 to support Unit 2 impiementation during the Third Quarter 2014 refueling outage and Unit 3 implementation the Third Quarter 2015 refueling outage.

Other:

These amendments for LaSalle and Peach Bottom fulfill the information requirements of RS-001. "Review Standard for Extended Power Uprates" Revision 0, dated December 2003. The RSD evaluation accounts for the guidance provided in Regulatory Guide 1 "Comprehensive Vibration Assessment Program for Reactor Internals During Preoperational and Initial Startup Testing." Exelon has evaluated all non-EPU licensing actions for impact on the EPU amendment request and has determined that there are no Technical: TIle technical analyses providing the basis for the proposed amendments for LaSalle and Peach Bottom. as prescribed by RS-001, are being performed. These analyses are being completed in accordance with the codes and rnethodolo91es described in the approved CL TR The results of these technical analyses will be contained in Attachment 5 (LaSalle) or Attachment 6 (Peach Bottom) of the proposed amendment.

Safety: A comprehensive review of accident analyses. component and system analyses, and r8(lioio~Jicaj dose consequences as preSCribed by RS-001 is in progress These analyses are being performed in accordance with the approved CL Tr~. The assessment provided in the CLTR will be confirmed in the LaSalle and Peach Bottom amendment requests. The reSlllts of these evaluations will be contained in Attachment 5 (LaSalle) or Attachment 6 (Peach Bottom) of the proposed amendment.

or imp()ct the current LaSalle or Peach Bottom Security Plans.

Hazards Consideration ani1lysls in accordam:e with 10 CFH 50.91 (a)( 1) upon lidi1llce of HSO()1 for LaSalle and Peach Bottofll. Based on initial reviews. it is increase ill theprobability orconsequences of an accident evaluated, create tile Enclosure 2

Presubmittal Guidance Checklist - LaSalle EPU Pre-Submittal Meeting for Replacement Steam Dryers Scheduled 06/11/2012 Page 2 of 9 Proposed Licensing Action: Extended Power Uprate (EPU)

Licensee/Plant: Exelon/LaSalie Units 1 and 2, Peach Bottom Units 2 and 3 possibility of a new or different kind of accident from any accident previously evaluated, or involve a significant reduction in a margin of safety. The results of the No Significant Hazards Consideration evaluation will be provided in Attachment 1 to the proposed amendment requests for LaSalle and Peach Bottom.

Environmental: Exelon will complete an Environmental Assessment in support of the proposed amendment requests for LaSalle and Peach Bottom in accordance with the approved CLTR. The generic input to these assessments provided in the CLTR will be verified to be applicable to LaSalle and Peach Bottom as part of the assessments performed. The specific assessments for LaSalle and Peach Bottom will reference all the applicable generic input. The environmental assessment will be contained in Attachment 8 of the proposed amendment requests for LaSalle and Peach Bottom.

Precedent and Date Relevance and Deltas to Proposed Licensing Action:

Nine Mile Point Unit 2, 12/2212011 Extended Power Uprate amendment increasing reactor core thermal power approximately 15%. This is the most (ML113300040) recently approved BWR EPU. Nine Mile Point Unit 2 is a BWR 5 with Mark II containment. LaSalle Units 1 & 2 are a BWRl5 with Mark II containment and Peach Bottom Units 2 & 3 are a BWRl4 with Mark I containment.

Point Beach Units 1 & 2, 05/03/11 Extended Power Uprate amendment increasing reactor core thermal power approximately 17%. Point Beach is a (ML111170513) PWR. LaSalle Units 1 & 2 are a BWRl5 with Mark II containment and Peach Bottom 2 & 3 are a BWRl4 with Mark I containment.

Hope Creek, 05/14/08 (ML081230540) Extended Power Uprate amendment increasing reactor core thermal power approximately 15%. Hope Creek is a BWRl4 with a Mark I containment. LaSalle Units 1 & 2 are a BWRl5 with Mark II containment and Peach Bottom 2 &

3 are a BWRl4 with Mark I containment.

Susquehanna Units 1 & 2, dated Extended Power Uprate amendment increasing reactor core thermal power approximately 13%. Susquehanna is a 01/30108 (ML081050530) BWRl4 with Mark II containment. Replacement steam dryers were installed in both units. LaSalle Units 1 & 2 are a BWRl5 with Mark II containment and Peach Bottom 2 & 3 are a BWRl4 with Mark I containment.

Replacement Steam Dryer Evaluation Preliminary Bases for the Proposed licenSing Action:

Technical Issue Replacement Steam Dryer:

As part of the LaSalle and Peach Bottom EPU applications, steam dryer evaluations at EPU power levels will be submitted. These evaluations are based on replacement steam dryers (RSDs). The purpose of this proposed discussion is to present Exelon's plans for the RSD evaluations and to gain alignment with the NRC regarding the strategy, schedule, and classification of the replacement steam dryers.

Specifically: The Exelon proposed approach includes classification of Peach Bottom Unit 2 as a prototype. As such, Peach Bottom Unit 2 RSD will be instrumented. It is proposed the subsequent dryers (LaSalle Unit 2, Peach Bottom Unit 3 and LaSalle Unit 1) be classified as non-prototype, category I. This designation will be based on the configurations having substantial similarity to Peach Bottom Unit 2 with the differences having no significant effect on the vibratory response and excitation. Comprehensive Vibration Assessment Program (CVAP) plans are to be developed based on these classifications and will be submitted with the EPU LAR. RG 1.20, Revision 3 will be used as guidance.

Presubmittal Guidance Checklist- LaSalle EPU Pre-Submittal Meeting for Replacement Steam Dryers Scheduled 06/11/2012 Page 3 of9 Proposed Licensing Action: Extended Power Uprate (EPU)

Licensee/Plant: Exelon/LaSalle Units 1 and 2, Peach Bottom Units 2 and 3 Schedule for installation of the RSDs as part of this proposed approach is as follows:

  • Peach Bottom Unit 2 (prototype) - September 2014
  • LaSalle Unit 2 (non-prototype, category I) February 2015
  • Peach Bottom Unit 3 (non-prototype, category I) - September 2015
  • LaSalle Unit 1 (non-prototype, category I) February 2016 The main purpose of this pre-submittal meeting on this topic is to reach agreement with the NRC that the LaSalle Units 1 and 2 RSD can be designated as non-prototype category I (RG 1.20) using the parameters presented, and provided it is shown that the nominal differences presented in arrangement, size, design, and operating conditions between the LaSalle and the Peach Bottom RSD have no significant affect on vibratory response.

P

~ ~------.------------- -- .. _ . . . . _ - . - .. _ - _ ...... _ .... - _ .... _ _ ...... D

-".1-" - .. - .. ----- .. - ......

Precedent and Date Relevance and Deltas to Proposed Licensing Action:

Susquehanna Units 1 & 2, dated Susquehanna Units 1 & 2 replaced steam dryers in both units in conjunction with EPU. Susquehanna instrumented 01/30/08 (ML081050530) the Unit 1 RSD but did not instrument the follow-on RSD (Unit 2). Similarly, Exelon proposes to instrument the first RSD (the prototype RSD at Peach Bottom Unit 2), but not the follow-on units. The Susquehanna amendment and SE did not refer to RG 1.20 but to the regulation. The Exelon amendment requests will meet the regulation and make use of RG 1.20, Revision 3.

Susquehanna performed an approximate 13% uprate to a core power of 3952 MWt. LaSalle is performing an approximate 13% uprate to a core power of 3988 MWt. Peach Bottom is performing an approximate 12.4% uprate to a core power of 3951 MWt. Susquehanna is a BWRl4 with Mark II containment. LaSalle Units 1 & 2 are a BWRl5 with Mark II containment and Peach Bottom 2 & 3 are a BWRl4 with Mark I containment.

Nine Mile Point Unit 2, 12/22/2011 Nine Mile Point 2 utilized the load definition analysis method (ACM Version 4.1). Exelon will implement the ACM 4.1 (ML113300040) as used for the steam dryer qualification at EPU conditions for Nine Mile Point 2, which recently received US NRC approval. Nine Mile Point 2 steam dryer is an OEM GEH dryer, not a replacement steam dryer.

Nine Mile Point 2 performed an approximate 15% uprate to a core power of 3988 MWt. LaSalle is performing an approximate 13% uprate to a core power of 3988 MWt. Peach Bottom is performing an approximate 12.4% uprate to a core power of 3951 MWt. Nine Mile Point Unit 2 is a BWR 5 with Mark II containment. LaSalle Units 1 & 2 are a BWRl5 with Mark II containment and Peach Bottom Units 2 & 3 are a BWRl4 with Mark I containment).

Regulatory Organization Interface: I D Reactor Systems D Accident Dose D Security D Electrical D Probabilistic Risk Assessment D Emergency Planning

Presubmittal Guidance Checklist - LaSalle EPU Pre-Submittal Meeting for Replacement Steam Dryers Scheduled 06/11/2012 Page 4 of9 Proposed Licensing Action: Extended Power Uprate (EPU)

Licensee/Plant: Exelon/LaSalie Units 1 and 2, Peach Bottom Units 2 and 3 D Instrument and Controls D Fire Protection D Technical Specifications

~ Mechanical and Civil D Piping and NDE D Special Projects D Balance of Plant D Steam Generator Tube Integrity D Health Physics D Containment and Ventilation ~ Component and Performance Testing D DORL - Projects D NMSS D Environmental DOE D NSIR D OGC D NRC Regulatory Guidance Current Proposed Comments and Staff Interpretations:

Pertaining to Selected Pertaining to Selected Pertaining to Selected Technical Topic: Replacement Technical Topic: Technical Topic: Steam Dryer Evaluation Replacement Steam Dryer Replacement Steam Dryer Evaluation Evaluation Standard Review Plan None None LaSalle was not licensed as a SRP facility. SER (NUREG-0519) related to the operation of LaSalle units 1 and 2 (March 1981) contained the scope of NRC staff's technical and radiological review.

PBAPS was not licensed as a SRP facility. SER related to the operation of Peach Bottom Units 2 & 3 (October 3, 1972) contained the scope of NRC staff's technical and radiological review.

The intent of SRP sections 3.9.1, 3.9.2, 3.9.3, and 3.9.5 will be considered. The concluding summary of the SRP serves as the bases for how the applicable regulation is met.

Branch Technical Positions None None None Review Standards None RS-001, Section 2.2.3 RS-001, Section 2.2.3, provides the review standard for reactor vessel internals for an EPU. The RSD evaluation is based on this section of the review standard. The full RSD evaluation will be provided as Attachment 17 of the LaSalle and Peach Bottom EPU LARs.

Presubmittal Guidance Checklist - LaSalle EPU Pre-Submittal Meeting for Replacement Steam Dryers Scheduled 06/11/2012 Page 50f9 Proposed Licensing Action: Extended Power Uprate (EPU)

Licensee/Plant: Exelon/LaSalie Units 1 and 2, Peach Bottom Units 2 and 3 NRC Regulatory Guidance Current Proposed Comments and Staff Interpretations:

Pertaining to Selected Pertaining to Selected Pertaining to Selected Technical Topic: Replacement Technical Topic: Technical Topic: Steam Dryer Evaluation Replacement Steam Dryer Replacement Steam Dryer Evaluation Evaluation Regulatory Guides None RG 1.20, Rev 3 Exelon proposal includes classification of PBAPS Unit 2 as a prototype and to instrument the PBAPS Unit 2 RSD. It is proposed the subsequent dryers (i.e., Peach Bottoms Unit 3 and LaSalle Units 1 & 2) be classified as non-prototype, category I based on the configurations having substantial similarity to PBAPS Unit 2 with the nominal differences having no Significant effect on the vibratory response and excitation. Comprehensive Vibration Assessment Programs are to be developed for submittal based on these classifications.

NUREGs None None None Interim Staff Guidance None None None Other None NRC Letter to BWRVIP, The first letter provides the NRC technical rationale for "Methodologies for requiring a minimum alternating stress ratio of 2.0 for the Demonstrating Steam Dryer ACM methodology. Exelon RSDs will meet the requirement Integrity for Power Uprate- of a calculated alternating SR of 2.0.

Boiling Water Reactor Vessel and Internals Project," dated The second letter changed the verbiage of the guidance from May 27,2010, ML101260432 a "requirement" to a "recommendation."

and Enclosures 1 & 2, ML101260457&

ML101260464.

Subsequent NRC letter of May 6, 2011, on the above topic, ML110740796, and Enclosures 1 & 2, ML110740806 &

ML110740809.

Presubmittal Guidance Checklist - LaSalle EPU Pre-Submittal Meeting for Replacement Steam Dryers Scheduled 06/11/2012 Page 6 of9 Proposed Licensing Action: Extended Power Uprate (EPU)

LicenseefPlant: Exelon/LaSalie Units 1 and 2, Peach Bottom Units 2 and 3 NRC Generic Current Proposed Comments Communications:

Pertaining to Selected Pertaining to Selected Pertaining to Selected Technical Topic: Replacement Technical Topic: Technical Topic: Steam Dryer Evaluation Replacement Steam Dryer Replacement Steam Dryer Evaluation Evaluation NRC Bulletins None None None NRC Generic Letters None None None Regulatory Information None None None Summaries NRC Information Notices None IN 2002-26 (ML022530291) The IN and its supplements provide Operating Experience IN 2002-26, Supplement 1 (OE) from the Quad Cities Units 1 and 2 steam dryer failures (ML03980434 ) following the 17.8 percent EPU. The OE from the Quad Cities failures has been included in industry groups IN 2002-26, Supplement 2 (BWRVIP) and NRC reviews in the form of requests for (ML040080392) additional information.

Other None None None Facility Specific Licensing Current Proposed Comments Basis:

Pertaining to S91ected Pertaining to Selected Pertaining to Selected Technical Topic: Replacement Technical Topic: Technical Topic: Steam Dryer Evaluation Replacement Steam Dryer Replacement Steam Dryer Evaluation Evaluation Updated Final Safety Analysis LaSalle UFSAR Sections: Changes in dryer design, Required changes to the UFSAR will be developed as the Report 3.9,4.5,5.2, Appendix B analysis methods and normal evaluations are completed.

and faulted RIPD. Addition of Peach Bottom UFSAR classification of the RSDs per Sections: 3.3,4.2. Appendix RG 1.20, Revision 3.

K.

Technical SpeCifications Bases None None No Technical Specification Bases changes expected for RSD evaluations.

Presubmittal Guidance Checklist - LaSalle EPU Pre-Submittal Meeting for Replacement Steam Dryers Scheduled 06/11/2012 Page 7 of 9 Proposed Licensing Action: Extended Power Uprate (EPU)

Licensee/Plant: Exelon/LaSalie Units 1 and 2, Peach Bottom Units 2 and 3 Facility Specific Licensing Current Proposed Comments Basis:

Pertaining to Selected Pertaining to Selected Pertaining to Selected Technical Topic: Replacement Technical Topic: Technical Topic: Steam Dryer Evaluation Replacement Steam Dryer Replacement Steam Dryer Evaluation Evaluation Technical Requirements None None No TRM changes expected for RSD evaluations.

Manual Fire Hazards Analysis Report Current revision Not affected None NRC Safety Evaluation Reports None None None NRC Correspondence Not affected None None Regulatory Commitments None RSDs will be classified per Details of any new commitment will be provided in the RG 1.20, Revision 3. Attachment 7 of proposed LaSalle and Peach Bottom LARs.

Comprehensive Vibration Assessment Program (CVAP) plans are to be developed based on the RG 1 .20, Revision 3, classifications and will be submitted with the EPU LAR.

Computer Codes None listed in UFSAR Use of Acoustic Circuit Model ACM 4.1 was recently used for the approved NMP2 EPU (ACM) 4.1 Steam Dryer Evaluation. The use of this computer code will be defined in Attachment 17 of the EPU LAR. The use of ACM 4.1 for the dryer evaluation is a new methodology for the LaSalle and Peach Bottom units.

Other None NRC Letter, "Summary of The pre-application meeting summary and slides describe April 5, 2012, meeting with the planned approach, schedule, and sequencing of the Exelon RE: Proposed Exelon steam dryer replacements. PBAPS Unit 2 will be Amendment Request to classified as a prototype, while PBAPS Unit 3 and LaSalle Implement an Extended Units 1 & 2 will be classified as non-prototype, category I.

Power Uprate, " dated April The non-prototype RSDs will establish similarity in design, 11,2012 (ML120970633) with size, and operating conditions to the prototype.

slides (ML120900634)

Presubmittal Guidance Checklist - LaSalle EPU Pre-Submittal Meeting for Replacement Steam Dryers Scheduled 06/11/2012 Page 8 of 9 Proposed Licensing Action: Extended Power Uprate (EPU)

Licensee/Plant: Exelon/LaSalie Units 1 and 2, Peach Bottom Units 2 and 3 Industry Guidance: Current Proposed Comments Pertaining to Selected Pertaining to Selected Pertaining to Selected Technical Topic: Replacement Technical Topic: Technical Topic: Steam Dryer Evaluation Replacement Steam Dryer Replacement Steam Dryer Evaluation Evaluation Codes and Standards None None The codes and standards used in the Steam Dryer analyses will be provided in Attachment 17 of proposed Peach Bottom and LaSalle LARs.

Topical Reports None BWRVIP-181 P-A In January 2010, the NRC staff found BWRVIP-181 acceptable for providing guidance regarding the design BWRVIP-182P-A criteria for steam dryer repairs/replacements, for the selection of materials, and establishing fabrication, installation and inspection requirements for steam dryers.

Exelon will use the guideline to the extent possible.

BWRVIP-182P-A defines an overall approach for demonstrating steam dryer structural integrity as part of power uprates. The document is intended to comply with the guidance provided in U.S. NRC Regulatory Guide 1.20.

Exelon will use the guideline to the extent possible.

Industry Initiatives and None None None Guidelines Other None None None Meeting Actions/Agreements:

1.

2.

3.

4.

Presubmittal Guidance Checklist - LaSalle EPU Pre-Submittal Meeting for Replacement Steam Dryers Scheduled 06/11/2012 Page 9 of 9 Proposed Licensing Action: Extended Power Uprate (EPU)

Licensee/Plant: Exelon/LaSalie Units 1 and 2, Peach Bottom Units 2 and 3 Presubmittal Meeting Attendees: Affiliation/Title: Contact Information:

J. Zimmerman -2 PARTICIPANTS: Participants from the NRC include members of the Office of Nuclear Reactor Regulation (NRR),

NRC/NRR EXELON J. Zimmerman S. Ainger M. Murphy J. Rommel W.Jessup K. Borton C. Basavaraju D. Foryth (Westinghouse)

M. Chakrapani R. Dennis (Westinghouse)

K. Manoly B. Maurer (Westinghouse)

N. DiFrancesco et. al.

H. Rodriguez et. al.

Interested members of the public can participate in this meeting via a toll-free audio teleconference. Please call one of the meeting contacts listed below before Thursday, June 7,2012, 2:00pm EDT to get the telephone number and the pass code, MEETING CONTACTS: Hector L. Rodriguez-Luccioni Nicholas DiFrancesco, NRR 301-415-2678 301-415-1115 Hector.Rodriguez-Luccioini@nrc,gov Nicholas.DiFrancesco@nrc.gov The NRC provides reasonable accommodation to individuals with disabilities where appropriate. If you need a reasonable accommodation to participate in a meeting, or need a meeting notice or a transcript or other information from a meeting in another format (e,g" Braille, large print), please notify the NRC's meeting contact. Determinations on requests for reasonable accommodation will be made on a case-by-case basis.

To receive a summary of this meeting and begin receiving other plant-specific e-mail distributions, you must subscribe to the Operating Reactor Correspondence electronic distribution for this plant via http//www.nrc.gov/public-involve/listserver/plants-by-region.htm!. Once subscribed, if you wish to discontinue receiving electronic distribution, you may unsubscribe at any time by visiting the same web address above.

Docket Nos, 50-373, 50-374, 50-277, and 50-278

Enclosure:

1. Agenda 2, Pre-Submittal Check List cc w/encl: Distribution via Listserv DISTRIBUTION:

PUBLIC RidsOpaMail Resource WJessup, NRR/DE JStrasma, Rill LPLIII-2 Reading File RidsRgn3MailCenter Resource CBasavaraju, NRR/DE RRuiz, Rill RidsAcrsAcnw_ MailCTR Resource RidsNrrLASRohrerResource MKamal, NRR/DE FRamirez, Rill RidsNrrOdResource RidsNRRPMLasalie S8agley, EDO Rill RidsNrrDorl Resource JZimmerman, NRR/DORL PMNS Resource RidsNrrDorlLpLIII-2 Resource NDiFrancesco, NRR/DORL MMurphy,NRR/DE RidsOgcRp Resource HRodriguez-Luccioni, NRR/DORL CSteger, NRR/PMDA ADAMS Accession No ML12137A179 ilOFFICE lDORULPLlII-2/PE DORULPLlII-2/PM ~RULPL3-2/LA i DORLlLPL3-2/8C DORULPLlII-2/PM I IINAME IHRodriguez NDiFrancesco ohrer IJZimmerman NDiFrancesco II II DATE 15/15/12 5115112 5/16/12 15/16/12 5/17/12 /I OFFICIAL RECORD COpy