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| {{#Wiki_filter:CKIT" 1. | | {{#Wiki_filter:CKIT"1. |
| Agenda* Introductions e NMP1 Design Overview e Limiting Design Basis Accident (DBA) Analyses e Suppression Pool pH Control e Technical Specification Revisions 2 Consteltation Attendees N A A A Tlll -I lllI'I I I ... .I T L EIl 'I I II I ,II Todd Fiorenza Glenn Stinson Dennis Vandeputte Jim Metcalf Phil Wenglowski Gerry Gryczkowski TITLE NMP Design Eng'g Manager NMP Sr. Analyst NMP Sr. Licensing Engineer Polestar Applied Technology CGG Nuclear Fuel Services CGG Nuclear Fuel Services NMPI Licensing | | Agenda |
| | * Introductions e NMP1 Design Overview e Limiting Design Basis Accident (DBA) Analyses e Suppression Pool pH Control e Technical Specification Revisions 2 |
| | |
| | Consteltation Attendees NA-IA A lllI'I I I ... . I TlllT L EIl 'I I II I ,II TITLE Todd Fiorenza NMP Design Eng'g Manager Glenn Stinson NMP Sr. Analyst Dennis Vandeputte NMP Sr. Licensing Engineer Jim Metcalf Polestar Applied Technology Phil Wenglowski CGG Nuclear Fuel Services Gerry Gryczkowski CGG Nuclear Fuel Services |
| | |
| | NMPI Licensing Background |
| | = .*. _ .. IL . _ _* . . .I III I I II I. |
| | " Initial Operating License - 1969 |
| | " Full-Term Operating License - 1974 |
| | " Pre-GDC Plant |
| | * AST Submittal Satisfies Commitment Made in GL 2003-01 |
| | |
| | ===Response=== |
| | 4 |
| | |
| | NMPI Design Overview |
| | " BWR2 Reactor, 1850 MWt |
| | -2 Main Steam Lines |
| | " Mark I Containment |
| | - DryweLl (inverted light bulb) |
| | - Suppression Chamber (torus) |
|
| |
|
| ===Background===
| |
| = _ ..IL _ ...I .III I I I I I." Initial Operating License -1969" Full-Term Operating License -1974" Pre-GDC Plant* AST Submittal Satisfies Commitment Made in GL 2003-01 Response 4 NMPI Design Overview" BWR2 Reactor, 1850 MWt-2 Main Steam Lines" Mark I Containment
| |
| -DryweLl (inverted light bulb)-Suppression Chamber (torus)
| |
| NMPI Design Overview Reactor Building (Secondary Containment) | | NMPI Design Overview Reactor Building (Secondary Containment) |
| -Encloses Primary Containment | | - Encloses Primary Containment |
| -Houses ESF Systems-Houses New and Spent Fuel Storage Facilities | | - Houses ESF Systems |
| -Poured Concrete up to Refuel Floor-Metal Wall Panels and Roof Deck Above Refuel Floor* Reactor Building Emergency Ventilation System (RBEVS)-Maintains Negative Pressure in RB Post-Accident | | - Houses New and Spent Fuel Storage Facilities |
| -2 Trains of Fans and Fitters (HEPA and Charcoal)6 NMP1 Design Overview Control Room-Located in Southeast Corner of Turbine Building-Positive Pressure Maintained During Normal Operation and Post-Accident | | - Poured Concrete up to Refuel Floor |
| -Maximum Measured Inleakage of 45 scfm Control Room Air Treatment System (CRATS)-Filters Intake Air Post-Accident (HEPA, Charcoal)-Initiates Automatically on LOCA, MSLB, or High Radiation in Intake Air Limiting DBA Analyses DBAs Analyzed-Loss of Coolant Accident (LOCA)-Main Steam Line Break (MSLB) Accident-Refueling Accident-Control RodDrop Accident (CRDA)* Regulatory Guide 1.183 Conformance 8 | | - Metal Wall Panels and Roof Deck Above Refuel Floor |
| Limiting DBA Analyses* New Atmospheric Dispersion Factors (X/Q values)-Based on on-site meteorological data collected from 1997 through 2001-PAVAN and ARCON96 computer codes used 9 Limiting DBA Analyses Loss of Coolant Accident (LOCA)-EvaLuation Methodology | | * Reactor Building Emergency Ventilation System (RBEVS) |
| -Radionuclide Release Pathways* Release Inputs and Timing* Transport Inputs* Removal Inputs-Single Failure Considerations | | - Maintains Negative Pressure in RB Post-Accident |
| -Conservatisms 10 Limiting DBA Analyses p Main Steam Line ,Break (MSLB) Accident-Revised reactor coolant specific activity limits consistent with ITS-Instantaneous ground level puff release dispersion factor for Control Room-No credit for CRATS filtration | | - 2 Trains of Fans and Fitters (HEPA and Charcoal) 6 |
| -Dose. conversion factors per Table 2.1 of FGR-1 1 11 r Limiting DBA Analyses Refueling Accident-Post-shutdown 24-hour decay period assumed-Instantaneous release with no credit for secondary containment | | |
| -No credit for RBEVS or CRATS filtration 12 Limiting DBA Analyses Control Rod Drop Accident (CRDA)-Two cases considered" Release via main condenser leakage" Release via mechanical vacuum pump No credit for CRATS filtration 13 4 Suppress~ion Pool pH ControL° Credit for sodium pentaborate solution addition by the Liquid Poison System (LPS)* Suppression pool pH calculation performed using methodology approved by NRC for Grand Gulf* Evaluated suitability of LPS to perform post-LOCA pH control function* Reviewed procedural guidance for post-LOCA LPS injection. | | NMP1 Design Overview Control Room |
| 14-- -- ---- ---- | | - Located in Southeast Corner of Turbine Building |
| Technical Specification Revisions e New Definitions | | - Positive Pressure Maintained During Normal Operation and Post-Accident |
| -Dose Equivalent 1-131; Recently Irradiated Fuel* Require LPS Operability in Hot Shutdown e Revised RCS Coolant Activity Limits and Surveillance Requirements" Relaxed Secondary Containment, requirements" Delete License Condition 2.C. (3)RBEVS, and CRATS 15 Questions? | | - Maximum Measured Inleakage of 45 scfm Control Room Air Treatment System (CRATS) |
| | - Filters Intake Air Post-Accident (HEPA, Charcoal) |
| | - Initiates Automatically on LOCA, MSLB, or High Radiation in Intake Air |
| | |
| | Limiting DBA Analyses DBAs Analyzed |
| | - Loss of Coolant Accident (LOCA) |
| | - Main Steam Line Break (MSLB) Accident |
| | - Refueling Accident |
| | - Control RodDrop Accident (CRDA) |
| | * Regulatory Guide 1.183 Conformance 8 |
| | |
| | Limiting DBA Analyses |
| | * New Atmospheric Dispersion Factors (X/Q values) |
| | - Based on on-site meteorological data collected from 1997 through 2001 |
| | - PAVAN and ARCON96 computer codes used 9 |
| | |
| | Limiting DBA Analyses Loss of Coolant Accident (LOCA) |
| | - EvaLuation Methodology |
| | - Radionuclide Release Pathways |
| | * Release Inputs and Timing |
| | * Transport Inputs |
| | * Removal Inputs |
| | - Single Failure Considerations |
| | - Conservatisms 10 |
| | |
| | Limiting DBA Analyses p Main Steam Line ,Break (MSLB) Accident |
| | - Revised reactor coolant specific activity limits consistent with ITS |
| | - Instantaneous ground level puff release dispersion factor for Control Room |
| | - No credit for CRATS filtration |
| | - Dose. conversion factors per Table 2.1 of FGR-1 1 11 r |
| | |
| | Limiting DBA Analyses Refueling Accident |
| | - Post-shutdown 24-hour decay period assumed |
| | - Instantaneous release with no credit for secondary containment |
| | - No credit for RBEVS or CRATS filtration 12 |
| | |
| | Limiting DBA Analyses Control Rod Drop Accident (CRDA) |
| | - Two cases considered |
| | " Release via main condenser leakage |
| | " Release via mechanical vacuum pump No credit for CRATS filtration 13 |
| | |
| | Suppress~ion Pool pH ControL 4 |
| | ° Credit for sodium pentaborate solution addition by the Liquid Poison System (LPS) |
| | * Suppression pool pH calculation performed using methodology approved by NRC for Grand Gulf |
| | * Evaluated suitability of LPS to perform post-LOCA pH control function |
| | * Reviewed procedural guidance for post-LOCA LPS injection. |
| | 14 |
| | -- |
| | -- |
| | ---- |
| | ---- |
| | |
| | Technical Specification Revisions e New Definitions - Dose Equivalent 1-131; Recently Irradiated Fuel |
| | * Require LPS Operability in Hot Shutdown e Revised RCS Coolant Activity Limits and Surveillance Requirements |
| | " Relaxed Secondary Containment, RBEVS, and CRATS requirements |
| | " Delete License Condition 2.C. (3) 15 |
| | |
| | Questions? |
| 16}} | | 16}} |
|
---|
Category:Meeting Briefing Package/Handouts
MONTHYEARML24137A1882024-05-16016 May 2024 Annual Assessment Meeting for Pa/Md/Ny/Nj Nuclear Power Plants - NRC Presentation Slides ML24100A7672024-04-11011 April 2024 Meeting Slides - Preapplication with Constellation on Planned Fleet Alternative Request to Adopt OMN-2 ML24089A2612024-04-0909 April 2024 Slides - Constellation - Pre-Application Regarding Hooded Masks 4/9/2024 Meeting Slides (L-2024-LLM-0041) ML24029A1742024-01-30030 January 2024 Constellation Pre-Application January 30, 2024, Meeting Slides - Proposed Alternative to Utilize Code Case N-932, Alternative Requirements for Acceptance of Containment Base Metal Corrosion or Erosion ML23317A0712023-11-14014 November 2023 NRC Pre-Submittal Meeting on November 14th, 2023 - TSTF-591 and Selected 50.69 License Condition Updates (EPID L-2023-LLM-0098) (Slides) ML23262B2602023-09-19019 September 2023 Slides - Constellation - Pre-Application EP 9/25/2023 Meeting Handout ML23255A1042023-08-11011 August 2023 Slides - Constellation - Pre-Application EP 9/18/2023 Draft CEG Presubmittal SG Performance Monitoring Plan Meeting Handout ML23157A0352023-06-0606 June 2023 Annual Assessment Meeting for Pa/Md/Ny/Nj Nuclear Power Plants - NRC Presentation Slides ML23103A4072023-04-13013 April 2023 Presentation Slides for Information Call on 4/13/23 N2E Recirc Discharge Nozzle Weld Repair 2nd Request for Alternative ML22301A0132022-11-0303 November 2022 Pre-Submittal Meeting Presentation Slides - Risk Informed Completion Time (TSTF-505) and Risk Informed Categorization and Treatmentof SSCs (10 CFR 50.69) Proposed License Amendments ML22305A5922022-11-0303 November 2022 Pre-Submittal Meeting Presentation Slides - Risk Informed Completion Time (TSTF-505) and Risk Informed Categorization and Treatmentof SSCs (10 CFR 50.69) Proposed License Amendments-Updated ML22222A1122022-08-0404 August 2022 NMP1 Torus Corrosion Presentation for August 2022 Final ML21314A4472021-11-10010 November 2021 Slides for Presubmittial Meeting for Proposed Alternative to Adopt ASME Code Case N-921 to Extend the Inservice Inspection Interval ML21165A1942021-06-16016 June 2021 Joint Annual Assessment Meeting for Pa/Md/Nj/Ny Nuclear Power Plants - Webinar Presentation ML21165A2882021-06-16016 June 2021 Joint Annual Assessment for Pa/Md/Nj/Ny Nuclear Power Plants - Webinar Presentation (Updated) ML20261G7322020-09-16016 September 2020 Pre-Submittal Slides Extend 120-month Isi/Ist Interval Under 50.55a ML20178A4202020-06-30030 June 2020 NEI Slides for June 30, 2020, Public Meeting on COVID-19 Response ML20170B0212020-06-23023 June 2020 NRC Pre-Submittal Meeting Byron Unit 2 One-Time Deferral of Reactor Pressure Vessel Head Penetration Nozzle (Rpvhpn) Inspections ML20175A8722020-06-23023 June 2020 Risk-Informed Inservice Inspection - U.S Nuclear Regulatory Commission (NRC) - Four Element Risk-Informed Approach ML20163A6552020-06-16016 June 2020 6-16-20 Byron Unit 2 Steam Generator License Amendment Request Pre-Submittal Meeting (NRC) - Byron Unit 2 LAR for One-Time Deferral of Steam Generator Inspections ML20169A5592020-06-16016 June 2020 Steam Generator License Amendment Request Pre-Submittal Meeting (NRC) - Byron Unit 2 LAR for One-Time Deferral of Steam Generator Inspections (Rev 1) ML20098D5082020-04-0909 April 2020 AST LOCA Approach to Elemental Iodine Removal - NRC Public Meeting on RAI 6 - April 9, 2020 ML20022A0262020-01-22022 January 2020 NEI Presentation Status Update for Ropte Short Term Action Plan: Removed Planned Unavailability for Mitigating Systems Performance Index ML19318F9512019-11-20020 November 2019 Presentation Slides for November 20, 2019, Pre-Application Meeting - Request for Revision to Quality Assurance Program Internal Audit Frequency ML19317C9952019-11-12012 November 2019 In-Service Testing Supplemental Position Indication Relief Request NRC Pre-Application Meeting November 18, 2019 ML19158A1202019-06-10010 June 2019 Rict & 50.69 LARs NRC Pre-submittal Meeting ML19161A2572019-06-0404 June 2019 BWR Fleet Msv/Srv - Testing Frequency Relief Request NRC Pre-Application Meeting June 4, 2019 ML19151A6602019-05-31031 May 2019 BWR Fleet Mssv/Srv Testing Frequency Relief Request NRC Pre-Application Meeting June 4, 2019 ML19133A0912019-04-22022 April 2019 Supplement to Containment Oxygen Concentration License Amendment Request ML19022A2002019-01-23023 January 2019 Request for Use of ASME Code Case N-879 for Exelon Nuclear Power Plants ML18347B3142018-12-19019 December 2018 Bwrvip/Asme Relief Request Discussion December 19, 2018 ML18334A2162018-11-30030 November 2018 Presentation Slides: Exelon BWR MSIV (Boiling-Water Reactor - Main Steam Isolation Valve) Leakage Optimization for NRC Pre-Submittal Meeting of December 6, 2018 ML18319A1272018-11-19019 November 2018 Slides for 11/19/18 Public Meeting - Exelon Fleet LAR for Common Language for TS 5.7 High Radiation Areas ML18054B3592018-02-27027 February 2018 Slide: NRC Pre-Submittal Meeting for Exelon Fleet LAR to Relocate TS Unit Staff Qualification ANSI Requirements to the QATR, February 27, 2018, Profile Info: Submitted by Frank Mascitelli ML17325A2772017-11-28028 November 2017 November 28, 2017 Pre-Submittal Teleconference Re Planned TSTF-542 LAR Presentation ML17306A0842017-11-0606 November 2017 Meeting Slide for Teleconference with Exelon Generation Company, LLC - Criticality Analysis for NMP1 Boraflex Racks: No Boraflex Credit, 3 Out of 4 Loading, and Cell Blockers ML17142A2382017-05-25025 May 2017 OEDO-17-00280 - Briefing Package for Drop-In Visit on June 9, 2017, by Senior Management of Exelon Generation Company, LLC with Chairman Svinicki, Commissioner Baran, and Commissioner Burns ML16153A3452016-06-0101 June 2016 Sign in Sheet and Handout ML16077A1562016-03-22022 March 2016 Fleet: Pre-application Teleconference with Exelon to Discuss a Potential License Amendment Request Regarding Operating Training Standards ML16075A3292016-03-16016 March 2016 OEDO-16-00165 - Briefing Package for Drop-In Visit on March 23, 2016, by Senior Management of Exelon Generation Company, LLC with the NRC Executive Director for Operations ML14084A5342014-03-26026 March 2014 Nrc/Nei Presentation Slides: 13-02 OIP Template Update ML13340A0912013-11-0101 November 2013 Regulatory Conference/Public Meeting - Loss of Shutdown Cooling - Ceng Presentation/Slides ML13059A3742013-03-13013 March 2013 Summary of Category 1 Public Meeting with Nine Mile Point Nuclear Station, Unit 2 Representatives to Discus Planned Amendment Request on Implementation of Mellla+ ML1212100442012-04-0303 April 2012 Meeting Slides - NFPA-805 Pre-Application Meeting with NRC Staff April 3, 2012 ML1113605612011-05-16016 May 2011 NRC Meeting Slides, Nine Mile Point & Fitzpatrick 2011 Annual Assessment Meeting ML0926506592009-09-15015 September 2009 Slides from the Public Meeting with Constellation Energy - Nine Mile Point ISFSI Presentation ML0913400442009-05-14014 May 2009 Annual Assessment Meeting Sign-in Sheet, April 30, 2009 ML0827705652008-10-27027 October 2008 Extended Power Uprate Pre-Application Meeting Slides ML0634800282006-12-0404 December 2006 Slides, Nine Mile Point 1 Alternate Source Term, from Nrc/Constellation Energy Meeting ML0619102902006-03-27027 March 2006 03/27/2006 Powerpoint Presentation - Nine Mile Point License Renewal NMP1 Drywell 2024-05-16
[Table view] Category:Slides and Viewgraphs
MONTHYEARML24137A1882024-05-16016 May 2024 Annual Assessment Meeting for Pa/Md/Ny/Nj Nuclear Power Plants - NRC Presentation Slides ML24100A7672024-04-11011 April 2024 Meeting Slides - Preapplication with Constellation on Planned Fleet Alternative Request to Adopt OMN-2 ML24089A2612024-04-0909 April 2024 Slides - Constellation - Pre-Application Regarding Hooded Masks 4/9/2024 Meeting Slides (L-2024-LLM-0041) ML24029A1742024-01-30030 January 2024 Constellation Pre-Application January 30, 2024, Meeting Slides - Proposed Alternative to Utilize Code Case N-932, Alternative Requirements for Acceptance of Containment Base Metal Corrosion or Erosion ML23317A0712023-11-14014 November 2023 NRC Pre-Submittal Meeting on November 14th, 2023 - TSTF-591 and Selected 50.69 License Condition Updates (EPID L-2023-LLM-0098) (Slides) ML23262B2602023-09-19019 September 2023 Slides - Constellation - Pre-Application EP 9/25/2023 Meeting Handout ML23255A1042023-08-11011 August 2023 Slides - Constellation - Pre-Application EP 9/18/2023 Draft CEG Presubmittal SG Performance Monitoring Plan Meeting Handout ML23157A0352023-06-0606 June 2023 Annual Assessment Meeting for Pa/Md/Ny/Nj Nuclear Power Plants - NRC Presentation Slides ML23103A4072023-04-13013 April 2023 Presentation Slides for Information Call on 4/13/23 N2E Recirc Discharge Nozzle Weld Repair 2nd Request for Alternative ML23080A2972023-03-21021 March 2023 Presentation Slides for Information Call on 3/21/23 N2E Recirc Discharge Nozzle Weld Repair Request for Alternative NEI 99-01, Slides - Constellation - Pre-Application EP 2/23/2023 Meeting Slides2023-02-21021 February 2023 Slides - Constellation - Pre-Application EP 2/23/2023 Meeting Slides ML22301A0132022-11-0303 November 2022 Pre-Submittal Meeting Presentation Slides - Risk Informed Completion Time (TSTF-505) and Risk Informed Categorization and Treatmentof SSCs (10 CFR 50.69) Proposed License Amendments ML22305A5922022-11-0303 November 2022 Pre-Submittal Meeting Presentation Slides - Risk Informed Completion Time (TSTF-505) and Risk Informed Categorization and Treatmentof SSCs (10 CFR 50.69) Proposed License Amendments-Updated ML22222A1122022-08-0404 August 2022 NMP1 Torus Corrosion Presentation for August 2022 Final ML21314A4472021-11-10010 November 2021 Slides for Presubmittial Meeting for Proposed Alternative to Adopt ASME Code Case N-921 to Extend the Inservice Inspection Interval ML21165A1942021-06-16016 June 2021 Joint Annual Assessment Meeting for Pa/Md/Nj/Ny Nuclear Power Plants - Webinar Presentation ML21165A2882021-06-16016 June 2021 Joint Annual Assessment for Pa/Md/Nj/Ny Nuclear Power Plants - Webinar Presentation (Updated) ML21162A3322021-06-11011 June 2021 BWR Fleet Relief Request Associated with RPV Instrument Nozzle Repairs ML20261G7322020-09-16016 September 2020 Pre-Submittal Slides Extend 120-month Isi/Ist Interval Under 50.55a ML20178A4202020-06-30030 June 2020 NEI Slides for June 30, 2020, Public Meeting on COVID-19 Response ML20170B0212020-06-23023 June 2020 NRC Pre-Submittal Meeting Byron Unit 2 One-Time Deferral of Reactor Pressure Vessel Head Penetration Nozzle (Rpvhpn) Inspections ML20175A8722020-06-23023 June 2020 Risk-Informed Inservice Inspection - U.S Nuclear Regulatory Commission (NRC) - Four Element Risk-Informed Approach ML20169A5592020-06-16016 June 2020 Steam Generator License Amendment Request Pre-Submittal Meeting (NRC) - Byron Unit 2 LAR for One-Time Deferral of Steam Generator Inspections (Rev 1) ML20163A6552020-06-16016 June 2020 6-16-20 Byron Unit 2 Steam Generator License Amendment Request Pre-Submittal Meeting (NRC) - Byron Unit 2 LAR for One-Time Deferral of Steam Generator Inspections ML20098D5082020-04-0909 April 2020 AST LOCA Approach to Elemental Iodine Removal - NRC Public Meeting on RAI 6 - April 9, 2020 ML20022A0262020-01-22022 January 2020 NEI Presentation Status Update for Ropte Short Term Action Plan: Removed Planned Unavailability for Mitigating Systems Performance Index ML19158A1202019-06-10010 June 2019 Rict & 50.69 LARs NRC Pre-submittal Meeting ML19133A0912019-04-22022 April 2019 Supplement to Containment Oxygen Concentration License Amendment Request ML18347B3142018-12-19019 December 2018 Bwrvip/Asme Relief Request Discussion December 19, 2018 ML18334A2162018-11-30030 November 2018 Presentation Slides: Exelon BWR MSIV (Boiling-Water Reactor - Main Steam Isolation Valve) Leakage Optimization for NRC Pre-Submittal Meeting of December 6, 2018 ML18319A1272018-11-19019 November 2018 Slides for 11/19/18 Public Meeting - Exelon Fleet LAR for Common Language for TS 5.7 High Radiation Areas ML18054B3592018-02-27027 February 2018 Slide: NRC Pre-Submittal Meeting for Exelon Fleet LAR to Relocate TS Unit Staff Qualification ANSI Requirements to the QATR, February 27, 2018, Profile Info: Submitted by Frank Mascitelli ML17325A2772017-11-28028 November 2017 November 28, 2017 Pre-Submittal Teleconference Re Planned TSTF-542 LAR Presentation ML17306A0842017-11-0606 November 2017 Meeting Slide for Teleconference with Exelon Generation Company, LLC - Criticality Analysis for NMP1 Boraflex Racks: No Boraflex Credit, 3 Out of 4 Loading, and Cell Blockers ML16153A3442016-06-0101 June 2016 Oswego Chamber of Commerce Assessment Meeting Presentation ML16077A1562016-03-22022 March 2016 Fleet: Pre-application Teleconference with Exelon to Discuss a Potential License Amendment Request Regarding Operating Training Standards ML14084A5342014-03-26026 March 2014 Nrc/Nei Presentation Slides: 13-02 OIP Template Update ML13340A0912013-11-0101 November 2013 Regulatory Conference/Public Meeting - Loss of Shutdown Cooling - Ceng Presentation/Slides ML13059A3742013-03-13013 March 2013 Summary of Category 1 Public Meeting with Nine Mile Point Nuclear Station, Unit 2 Representatives to Discus Planned Amendment Request on Implementation of Mellla+ ML1212100442012-04-0303 April 2012 Meeting Slides - NFPA-805 Pre-Application Meeting with NRC Staff April 3, 2012 ML1113605612011-05-16016 May 2011 NRC Meeting Slides, Nine Mile Point & Fitzpatrick 2011 Annual Assessment Meeting ML0926506592009-09-15015 September 2009 Slides from the Public Meeting with Constellation Energy - Nine Mile Point ISFSI Presentation ML0827705652008-10-27027 October 2008 Extended Power Uprate Pre-Application Meeting Slides ML0827503872008-09-29029 September 2008 Enclosure 2 Meeting Slides ML0811403012008-04-23023 April 2008 NRC Annual Performance Assessment Meeting ML0807901872008-03-18018 March 2008 NRC Annual Performance Assessment Slides, 2007 Reactor Oversight Program ML0712704232007-04-24024 April 2007 Constellation Slides - Nine Mile Point Meeting Annual Assessment Summary 2006-07 ML0710100842007-04-10010 April 2007 Slides for 04/24/2007 Nine Mile Point Annual Assessment Meeting ML0634800282006-12-0404 December 2006 Slides, Nine Mile Point 1 Alternate Source Term, from Nrc/Constellation Energy Meeting ML0630003542006-09-26026 September 2006 Slides for Constellation Energy Nine Mile Point 2 Extended Power Uprate Meeting 2024-05-16
[Table view] |
Text
CKIT"1.
Agenda
- Introductions e NMP1 Design Overview e Limiting Design Basis Accident (DBA) Analyses e Suppression Pool pH Control e Technical Specification Revisions 2
Consteltation Attendees NA-IA A lllI'I I I ... . I TlllT L EIl 'I I II I ,II TITLE Todd Fiorenza NMP Design Eng'g Manager Glenn Stinson NMP Sr. Analyst Dennis Vandeputte NMP Sr. Licensing Engineer Jim Metcalf Polestar Applied Technology Phil Wenglowski CGG Nuclear Fuel Services Gerry Gryczkowski CGG Nuclear Fuel Services
NMPI Licensing Background
= .*. _ .. IL . _ _* . . .I III I I II I.
" Initial Operating License - 1969
" Full-Term Operating License - 1974
" Pre-GDC Plant
Response
4
NMPI Design Overview
" BWR2 Reactor, 1850 MWt
-2 Main Steam Lines
" Mark I Containment
- DryweLl (inverted light bulb)
- Suppression Chamber (torus)
NMPI Design Overview Reactor Building (Secondary Containment)
- Encloses Primary Containment
- Houses ESF Systems
- Houses New and Spent Fuel Storage Facilities
- Poured Concrete up to Refuel Floor
- Metal Wall Panels and Roof Deck Above Refuel Floor
- Reactor Building Emergency Ventilation System (RBEVS)
- Maintains Negative Pressure in RB Post-Accident
- 2 Trains of Fans and Fitters (HEPA and Charcoal) 6
NMP1 Design Overview Control Room
- Located in Southeast Corner of Turbine Building
- Positive Pressure Maintained During Normal Operation and Post-Accident
- Maximum Measured Inleakage of 45 scfm Control Room Air Treatment System (CRATS)
- Filters Intake Air Post-Accident (HEPA, Charcoal)
- Initiates Automatically on LOCA, MSLB, or High Radiation in Intake Air
Limiting DBA Analyses DBAs Analyzed
- Loss of Coolant Accident (LOCA)
- Main Steam Line Break (MSLB) Accident
- Refueling Accident
- Control RodDrop Accident (CRDA)
Limiting DBA Analyses
- New Atmospheric Dispersion Factors (X/Q values)
- Based on on-site meteorological data collected from 1997 through 2001
- PAVAN and ARCON96 computer codes used 9
Limiting DBA Analyses Loss of Coolant Accident (LOCA)
- EvaLuation Methodology
- Radionuclide Release Pathways
- Release Inputs and Timing
- Single Failure Considerations
- Conservatisms 10
Limiting DBA Analyses p Main Steam Line ,Break (MSLB) Accident
- Revised reactor coolant specific activity limits consistent with ITS
- Instantaneous ground level puff release dispersion factor for Control Room
- No credit for CRATS filtration
- Dose. conversion factors per Table 2.1 of FGR-1 1 11 r
Limiting DBA Analyses Refueling Accident
- Post-shutdown 24-hour decay period assumed
- Instantaneous release with no credit for secondary containment
- No credit for RBEVS or CRATS filtration 12
Limiting DBA Analyses Control Rod Drop Accident (CRDA)
- Two cases considered
" Release via main condenser leakage
" Release via mechanical vacuum pump No credit for CRATS filtration 13
Suppress~ion Pool pH ControL 4
° Credit for sodium pentaborate solution addition by the Liquid Poison System (LPS)
- Suppression pool pH calculation performed using methodology approved by NRC for Grand Gulf
- Evaluated suitability of LPS to perform post-LOCA pH control function
- Reviewed procedural guidance for post-LOCA LPS injection.
14
--
--
Technical Specification Revisions e New Definitions - Dose Equivalent 1-131; Recently Irradiated Fuel
- Require LPS Operability in Hot Shutdown e Revised RCS Coolant Activity Limits and Surveillance Requirements
" Relaxed Secondary Containment, RBEVS, and CRATS requirements
" Delete License Condition 2.C. (3) 15
Questions?
16