ML051190268

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Meeting Presentation Slides - Summary of Meeting with FENOC Re Category 1, Pre-Application Review Re BVPS-1 Steam Generator (SG) Replacement and Related Alternate Source Term (AST) Approval
ML051190268
Person / Time
Site: Beaver Valley
(DPR-066)
Issue date: 03/23/2005
From:
FirstEnergy Nuclear Operating Co
To:
Office of Nuclear Reactor Regulation
References
TAC MC4645
Download: ML051190268 (17)


Text

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Beaver Valley Power Station Unit 1 Replacement Steam Generator Project Replacement Steam Generator License Amendment Request March 23, 2005 FENOC I

C Desired Outcome

  • Provide NRC with overview of replacement steam generator license amendment request
  • Provide NRC with overview of proposed project approach and schedule FENOC 2

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Agenda

  • Background
  • Issue description
  • Overview of approach, timing, and schedule
  • Concluding remarks/questions FENOC 3

Background

FENOC 4

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Background===

  • BVPS Full Potential Program

- Containment Conversion

-Submitted June 2004

- Best Estimate LOCA (BELOCA)

>Submitted October 2004

- Extended Power Uprate (EPU)

>Submitted October 2004 FENOC 5

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Background

  • BVPS Full Potential Program cont'd

- Improved Standard Technical Specifications (ITS)

>Submitted February 2005

- License Renewal

-#Submitted February 2005

- Steam Generator Replacement (RSG)

> February 2006 outage (1 R17)

FENOC 6=

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Full Potential Program Roadmap (Pre-January 2005) rO~t~iCO"MFENELO

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o Issue Description FENOC 4

i Issue Description

  • RSG project dependent on NRC approval of Containment Conversion, BELOCA, and EPU LARs

P Issue Description

- additional information required in six areas

>five of six items responded to February 2005

,-sixth item (PSA) response June 2005 FENOC 10 5

Issue Description

  • Various options explored for obtaining needed approvals of the technical specification and methodology changes necessary for RSG
  • Options evaluated from schedule and resource perspective (FENOC and NRC)

FENOC 1 1 a

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Issue Description a Option selected is RSG LAR based on EPU analyses

- RSG focus

- Eight technical specification changes

-reduction of 15 from EPU LAR FENOC 12

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6

Issue Description

  • Most efficient use of NRC and FENOC resources

- No additional analyses required

- Analyses currently under NRC review

- All methodologies previously accepted by NRC

  • Allows most time for NRC review prior to steam generator replacement outage FENOC 13 Overview of Approach, Timing, and Schedule FENOC 14 7

Overview

  • LAR will submit only the technical specification and methodology changes needed:

- RSG specific

- Required to use EPU analyses as basis for RSG FENOC 15

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Overview

  • Licensing report will contain the portions of the EPU analyses needed to support the eight changes

- No additional analyses

  • Additional information on RSG component included as separate enclosure FENOC 18 Ad ca 8

Overview

  • Technical specification change numbering consistent with EPU LAR

- Ease of cross-referencing

  • Licensing report format and numbering consistent with EPU licensing report (LR)

- Portions of EPU LR not included designated as "EPU section"

- Text of retained EPU LR sections maintained with minimal editing

  • Provide NRC with opportunity to optimize synergy with EPU FENOC 17

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Overview

  • LAR will be submitted April 2005
  • Approval requested January 2006 to support steam generator replacement outage schedule

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9

Overview

  • RSG design improvements require technical specification changes

- RSG narrow-range span larger than current generators

-212 versus 144 inches

- Other improvements t-tubing materials

-,tube support plate design

>tube-to-tubesheet joint FENOC 19 Overview

  • Narrow-range span technical specification changes

- Reactor trip system (Table 3.3-1)

-steam generator water level low-low setpoint

- ESF actuation system (Table 3.3-3)

>steam generator water level high-high and low-low setpoints

- Reactor coolant system - shutdown (4.4.1.3)

> minimum secondary side narrow range level FENOC 20 10

Overview

  • RSG improvement technical specification changes

- Steam generators (4.4.5)

>deletion of non-applicable methodologies

  • e.g., voltage based repair criterion deletion of single cycle approvals

-clarification of inservice inspection schedule for RSGs

  • Methodologies and computer codes consistent with CLB except for:

- BELOCA for large break LOCA

- VIPRE code for non-LOCA and fuel hydraulic DNBR

- WRB-2M correlation for DNBR (RFA fuel assemblies)

FENOC 22 11

Overview

  • Methodologies and computer codes consistent with CLB except for (cont'd):

- 1979 ANS decay heat + two sigma decay heat model

, main steamline break mass and energy release outside containment

- Selective implementation of alternative source term FENOC 23 Overview

  • Analyses technical specification changes

- Safety limits DNB correlation limits (2.1.1.1)

>WRB-2M DNB correlation limit applicable to Robust Fuel Assemblies

- Core Operating Limits Report approved methods (6.9.5)

> adds VIPRE code and WRB-2M correlation to list of approved methodologies FENOC 24 12

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Overview

  • Analyses technical specification changes (cont'd)

- Overtemperature/Overpressure Delta T reactor trip setpoint equations (Table 3.3-1)

--functions added for Delta T and T.,g lag compensation FENOC 25 Overview

  • Analyses technical specification changes (cont'd)

- Reactor coolant seal injection flow (3/4.5.5)

> Increased minimum seal line resistance

  • Additional charging flow credited for small break LOCA analysis FENOC 26 13

i Overview

  • RSG submittal dependency

- Relies on Containment Conversion analyses and modifications submitted in Containment Conversion LAR

- Relies on large break LOCA methodology included in BELOCA LAR FENOC 27 Overview

  • Amendment issuance sequence

- Containment Conversion (original)

> Request approval by June 2005

- BELOCA (original)

> Request approval by October 2005

- RSG (new)

> Request approval by January 2006 FENOC 28 14

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Full Potential With RSG Roadmap (Post-January 2005) inta~ment Conmcnonr RSELOC

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  • ConlnlC~ron FENOC 29 Concluding Remarks FENOC 30 15

i Concluding Remarks

  • Submittal of independent RSG LAR based on EPU analyses considered best overall option

- Most time for NRC review

- Most efficient use of NRC and FENOC resources

  • RSG LAR content and format intended to provide NRC with opportunity to optimize synergy with EPU FENOC 31 Concluding Remarks
  • Submittal will be provided April 2005
  • Approval requested January 2006
  • Dependent on approval of Containment Conversion and BELOCA LARs FENOC 32 I

n 16

Comments/Questions FENOC 33 Cat 17