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Line 29: |
Line 29: |
| Industry is developing a white paper on the general transient combustible/ignition source process. | | Industry is developing a white paper on the general transient combustible/ignition source process. |
| Assignment of Control Levels Level of controls will range from Low (Level 4) to High (Level 1) | | Assignment of Control Levels Level of controls will range from Low (Level 4) to High (Level 1) |
| Level 4: Fire Zones with low risk contribution. Fire PRA assumes full compartment burn and zones are not sensitive to higher transient influence factors | | Level 4: Fire Zones with low risk contribution. Fire PRA assumes full compartment burn and zones are not sensitive to higher transient influence factors |
| (~130 Fire Zones) | | (~130 Fire Zones) |
| Level 3: Level 4 Fire Zones (low risk) which contain specific areas with deterministic fire barriers and /or separation features (i.e. ERFBS or 20 ft separation) (~15 Fire Zones) | | Level 3: Level 4 Fire Zones (low risk) which contain specific areas with deterministic fire barriers and /or separation features (i.e. ERFBS or 20 ft separation) (~15 Fire Zones) |
Letter Sequence Other |
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MONTHYEARML12168A0012012-06-0808 June 2012 NRR E-mail Capture - Draft RAIs on VC Summer NFPA-805 Review Project stage: Draft RAI ML12202A0272012-07-26026 July 2012 Request for Additional Information Project stage: RAI RC-12-0142, License Amendment Request - LAR-06-00055, License Amendment Request to Adopt NFPA 805, Response to Request for Additional Information2012-10-10010 October 2012 License Amendment Request - LAR-06-00055, License Amendment Request to Adopt NFPA 805, Response to Request for Additional Information Project stage: Response to RAI RC-13-0017, License Amendment Request - LAR-06-00055, License Amendment Request to Adopt NFPA 805, Additional Information Regarding Response to Request for Additional Information2013-02-0101 February 2013 License Amendment Request - LAR-06-00055, License Amendment Request to Adopt NFPA 805, Additional Information Regarding Response to Request for Additional Information Project stage: Response to RAI ML13142A1572013-05-29029 May 2013 Update for 06/20/13 Meeting Notice with South Carolina Electric & Gas Company Regarding Voluntary Fire Protection Risk Initiative Self Assessment Project stage: Request ML13170A1192013-06-18018 June 2013 Public Slide - Control Room Evacuation Due to Fire, Based on NFPA 805 Project stage: Other ML13170A1302013-06-18018 June 2013 Public Slide - NFPA 805 Transient Combustible Controls Project stage: Other ML13199A1772013-07-31031 July 2013 Summary, June 20, 2013 Category 1 Meeting with South Carolina Electric and Gas Company, to Discuss Voluntary Fire Protection Risk Initiative Self-Assessment Project stage: Meeting ML13218A1952013-08-13013 August 2013 (VCSNS) - Request for Additional Information Project stage: RAI ML13234A4422013-08-28028 August 2013 (VCSNS) - Request for Additional Information Project stage: RAI RC-13-0142, License Amendment Request to Adopt NFPA 805, Response to Request for Additional Information2013-10-14014 October 2013 License Amendment Request to Adopt NFPA 805, Response to Request for Additional Information Project stage: Response to RAI ML13308B8002013-11-0707 November 2013 (VCSNS) - Request for Additional Information Project stage: RAI ML13347B0492013-12-19019 December 2013 (VCSNS) - Request for Additional Information Project stage: RAI RC-14-0002, Response to Request for Additional Information Regarding License Amendment to Adopt NFPA 8052014-01-0909 January 2014 Response to Request for Additional Information Regarding License Amendment to Adopt NFPA 805 Project stage: Response to RAI RC-14-0027, License Amendment Request- LAR-06-00055, License Amendment Request to Adopt NFPA 805, Response to Request for Additional Information2014-02-25025 February 2014 License Amendment Request- LAR-06-00055, License Amendment Request to Adopt NFPA 805, Response to Request for Additional Information Project stage: Response to RAI ML14071A1692014-03-24024 March 2014 Request for Additional Information Project stage: RAI RC-14-0067, License Amendment Request - LAR-06-00055, License Amendment Request to Adopt NFPA 805 Response to Request for Additional Information2014-05-0202 May 2014 License Amendment Request - LAR-06-00055, License Amendment Request to Adopt NFPA 805 Response to Request for Additional Information Project stage: Response to RAI RC-14-0083, License Amendment Request - LAR-06-00055, License Amendment Request to Adopt NFPA 805 - Response to Request for Additional Information2014-05-11011 May 2014 License Amendment Request - LAR-06-00055, License Amendment Request to Adopt NFPA 805 - Response to Request for Additional Information Project stage: Response to RAI ML14182A4732014-07-11011 July 2014 Request for Additional Information Regarding License Amendment Request to Adopt National Fire Protection Association Standard 805 Project stage: RAI RC-14-0129, Response to Request for Additional Information on License Amendment Request LAR-06-00055 and to Adopt NFPA 8052014-08-14014 August 2014 Response to Request for Additional Information on License Amendment Request LAR-06-00055 and to Adopt NFPA 805 Project stage: Response to RAI ML14311A1402014-11-0707 November 2014 Final VC Summer Iepra Ror 10-10-2014.docx Project stage: Request RC-14-0196, License Amendment Request LAR-06-00055 - License Amendment Request to Adopt NFPA 805 Response to Request for Additional Information2014-12-11011 December 2014 License Amendment Request LAR-06-00055 - License Amendment Request to Adopt NFPA 805 Response to Request for Additional Information Project stage: Response to RAI ML14287A2892015-02-11011 February 2015 Issuance of Amendment Regarding Transition to a Risk-Informed, Performance-Based Fire Protection Program in Accordance with 10 CFR 50.48(c) Project stage: Approval ML15041A1682015-02-13013 February 2015 Summary of Site Audit to Support the Review of a License Amendment Request for Virgil C. Summer Nuclear Station, Unit 1, to Transition to the National Fire Protection Association Standard 805 Fire Protection Licensing Basis Project stage: Approval 2013-08-28
[Table View] |
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Category:Meeting Briefing Package/Handouts
MONTHYEARML24008A2112024-01-25025 January 2024 Evaluation of Seismic Risk for V. C. Summer Under the Process for Ongoing Assessment of Natural Hazard Information (Poanhi) - January 25, 2024 (Slides) ML24008A2182024-01-25025 January 2024 Seismic Data to Support Public Meeting with Dominion Regarding NRC Staff Evaluation of Seismic Risk at V.C. Summer Generating Station - January 25, 2024 (Tables) ML23313A1292023-11-0909 November 2023 Environmental Scoping Meeting for V.C. Summer Subsequent License Renewal Application - November 14 Meeting Slides ML23131A4182023-05-25025 May 2023 V.C. Summer Nuclear Station 2022 Annual Assessment Meeting.Pptx ML22115A0502022-04-21021 April 2022 VC Summer, 2021 Annual Assessment Meeting ML20091G7232020-03-31031 March 2020 V.C. Summer 2019 Assessment Meeting Presentation ML18144A1482018-05-24024 May 2018 Public Meeting Summary - Virgil C. Summer Nuclear Station Docket No. 50-395 ML14323A4522014-11-19019 November 2014 V.C. Summer Construction Update ML14266A3912014-09-23023 September 2014 September 23, 2014, Category 1 Public Meeting with V. C. Summer - Presentation Slides ML14232A5372014-08-21021 August 2014 8-21-14 CIP Mtg Slides - FFD and ITAAC ML14219A4762014-08-0707 August 2014 Operating Experience on Initial Test Program ML14106A4762014-04-16016 April 2014 End of Cycle 2013 Public Meeting Memo ML14057A4202014-02-27027 February 2014 Public Meeting 2/27/2014 VCS Construction Update ML14028A4272014-01-23023 January 2014 Vendor Inspection Finding & ITAAC (Pdf) ML13309A8592013-11-0505 November 2013 V. C. Summer Construction Status and Lesson Learned AD Torres ML13170A1302013-06-18018 June 2013 Public Slide - NFPA 805 Transient Combustible Controls ML13170A1192013-06-18018 June 2013 Public Slide - Control Room Evacuation Due to Fire, Based on NFPA 805 ML13123A1472013-05-0303 May 2013 Summary of Category 1 Public Meeting with South Carolina Electric and Gas,Virgil C. Summer Nuclear Station, Units 2 and 3, Annual Assessment ML13098A8042013-03-26026 March 2013 Combined Emergency Plan Review ML12228A6292012-08-16016 August 2012 Report ITAAC Presentation ML12157A0452012-06-0404 June 2012 5/24/2012 - Summary of Category 3 Public Meeting - Virgil C. Summer Nuclear Station Unit 1 Annual Assessment and NRC Construction Oversight of Units 2 and 3 Combined Licenses ML11350A0902011-12-20020 December 2011 Draft VC Summer Public Meeting 20 Dec 2011 ML11242A0502011-08-30030 August 2011 Slides - Licensee Perspective on ITAAC Completion Process NRC Commission Briefing ML1120707792011-07-26026 July 2011 Enclosure 3: Presentation Slides/Handouts ML1115204732011-06-0101 June 2011 Meeting Summary - V. C. Summer - Presentation Slides ML1016705202010-06-17017 June 2010 Fire Protection Screening Criteria - V.C. Summer Nuclear Station ML1012600102010-05-0505 May 2010 Meeting Slides ML1012600092010-05-0505 May 2010 Meeting Posters ML0911000692009-04-17017 April 2009 Summary of Meeting with Public/Open House to Discuss NRC Reactor Oversight Process and the Annual Assessment of the Virgil C. Summer Nuclear Station ML0835204162008-12-16016 December 2008 Public Meeting Summary, Virgil C. Summer Nuclear Station, Docket No. 05-395 ML0811405532008-04-23023 April 2008 V. C. Summer Nuclear Station, Slides - Refuel 17 Plans ML0723400122007-08-22022 August 2007 Public Outreach Meeting South Carolina E&G Summer Nuclear Power Plant Combined License Application ML0715806282007-05-31031 May 2007 Enclosure 8 - OBE Exceedance Issues ML0713501062007-05-0202 May 2007 Meeting Handout on CRDM Canopy Seal Clamp Installation ML0713501092007-05-0202 May 2007 Meeting Handout on Summary of HP Performance During RF16 ML0713501022007-05-0202 May 2007 Meeting Handout on RB Tendon/Iwe/Iwl Inspection ML0713500972007-05-0202 May 2007 Meeting Handout on Alternate Safety Power Source - Summer ML0713500662007-05-0202 May 2007 Meeting Handout on RF16 Outage Review V.C. Summer ML0706703232007-03-0101 March 2007 (Westinghouse AP1000) ML0629904782006-10-24024 October 2006 VC Summer, Enclosure to Meeting Summary, September 13, 2006, Meeting with South Carolina Electric & Gas, on Generic Letter 96-06 (TAC M96872) ML0707202262006-06-22022 June 2006 Sce&G VC Summer Site - Site Characterization Visit (Handouts) ML0609405532006-03-20020 March 2006 Meeting Summary - Enclosure 2. Handouts for Meeting with South Carolina Electric & Gas Company Re Results of Root Cause Evaluation for the High Failure Rate on the January 10, 2006, Operator Licensing Initial Written Examination ML0600304352005-12-30030 December 2005 Rii Presentation Revised - RF-15 Outage Information IR 05000395/20050072005-03-10010 March 2005 Final Significance Determination for a Green Finding (NRC IR 05000395/2005007 Virgil C. Summer Nuclear Station) ML0409805332004-03-11011 March 2004 RIC 2004 Presentation - T11 - Alexander Marion - Emergent Technical Topics ML0404902122004-01-28028 January 2004 Handouts from 01/28/04 Management Meeting ML0328101372003-10-0606 October 2003 Presentation Slides for Post-Refueling Outage Meeting ML0327206212003-09-24024 September 2003 Examiner - Vendor Matrix with Phone Number ML0327206112003-09-22022 September 2003 Exam Process ML0309805902003-03-31031 March 2003 Annual Assessment Meeting for Virgil C. Summer Nuclear Station. NRC Presentation Slides 2024-01-25
[Table view] Category:Slides and Viewgraphs
MONTHYEARML24008A2112024-01-25025 January 2024 Evaluation of Seismic Risk for V. C. Summer Under the Process for Ongoing Assessment of Natural Hazard Information (Poanhi) - January 25, 2024 (Slides) ML24008A2182024-01-25025 January 2024 Seismic Data to Support Public Meeting with Dominion Regarding NRC Staff Evaluation of Seismic Risk at V.C. Summer Generating Station - January 25, 2024 (Tables) ML23325A2452023-11-13013 November 2023 Enclosure 2 - Dominion Slides ML23313A1292023-11-0909 November 2023 Environmental Scoping Meeting for V.C. Summer Subsequent License Renewal Application - November 14 Meeting Slides ML23312A0202023-11-0808 November 2023 Environmental Scoping Meeting for V.C. Summer Subsequent License Renewal Application-Virtual Meeting Slides ML23131A4182023-05-25025 May 2023 V.C. Summer Nuclear Station 2022 Annual Assessment Meeting.Pptx ML22115A0502022-04-21021 April 2022 VC Summer, 2021 Annual Assessment Meeting ML20091G7232020-03-31031 March 2020 V.C. Summer 2019 Assessment Meeting Presentation ML18144A1482018-05-24024 May 2018 Public Meeting Summary - Virgil C. Summer Nuclear Station Docket No. 50-395 ML18067A1212018-03-15015 March 2018 March 15, 2018, Public Meeting Presentation Regarding NFPA-805 Application ML17087A1542017-03-28028 March 2017 Response to Request for Additional Information on VC Summer Sfpli - Elevation View ML14323A4522014-11-19019 November 2014 V.C. Summer Construction Update ML14266A3912014-09-23023 September 2014 September 23, 2014, Category 1 Public Meeting with V. C. Summer - Presentation Slides ML14232A5372014-08-21021 August 2014 8-21-14 CIP Mtg Slides - FFD and ITAAC ML14219A4762014-08-0707 August 2014 Operating Experience on Initial Test Program ML14057A4202014-02-27027 February 2014 Public Meeting 2/27/2014 VCS Construction Update ML14028A4272014-01-23023 January 2014 Vendor Inspection Finding & ITAAC (Pdf) ML13309A8592013-11-0505 November 2013 V. C. Summer Construction Status and Lesson Learned AD Torres ML13170A1192013-06-18018 June 2013 Public Slide - Control Room Evacuation Due to Fire, Based on NFPA 805 ML13170A1302013-06-18018 June 2013 Public Slide - NFPA 805 Transient Combustible Controls ML13123A1472013-05-0303 May 2013 Summary of Category 1 Public Meeting with South Carolina Electric and Gas,Virgil C. Summer Nuclear Station, Units 2 and 3, Annual Assessment ML13098A8042013-03-26026 March 2013 Combined Emergency Plan Review ML12228A6292012-08-16016 August 2012 Report ITAAC Presentation ML12157A0452012-06-0404 June 2012 5/24/2012 - Summary of Category 3 Public Meeting - Virgil C. Summer Nuclear Station Unit 1 Annual Assessment and NRC Construction Oversight of Units 2 and 3 Combined Licenses ML11350A0902011-12-20020 December 2011 Draft VC Summer Public Meeting 20 Dec 2011 ML11242A0502011-08-30030 August 2011 Slides - Licensee Perspective on ITAAC Completion Process NRC Commission Briefing ML1120707792011-07-26026 July 2011 Enclosure 3: Presentation Slides/Handouts ML1115204732011-06-0101 June 2011 Meeting Summary - V. C. Summer - Presentation Slides ML1016705202010-06-17017 June 2010 Fire Protection Screening Criteria - V.C. Summer Nuclear Station ML1012600092010-05-0505 May 2010 Meeting Posters ML1012600102010-05-0505 May 2010 Meeting Slides ML0835204162008-12-16016 December 2008 Public Meeting Summary, Virgil C. Summer Nuclear Station, Docket No. 05-395 ML11216A2292008-12-0202 December 2008 0523 - R504P - Westinghouse Advanced Technology - 07.2 VC Summer Inadvertent Criticality ML0811405532008-04-23023 April 2008 V. C. Summer Nuclear Station, Slides - Refuel 17 Plans ML0723400122007-08-22022 August 2007 Public Outreach Meeting South Carolina E&G Summer Nuclear Power Plant Combined License Application IR 05000395/20075022007-07-30030 July 2007 Summary of Public Meeting - Virgil C. Summer Nuclear Station, to Discuss Significance on Apparent Violation Documented in Inspection Report 50-395-07-502 ML0715806282007-05-31031 May 2007 Enclosure 8 - OBE Exceedance Issues ML0713501062007-05-0202 May 2007 Meeting Handout on CRDM Canopy Seal Clamp Installation ML0713501022007-05-0202 May 2007 Meeting Handout on RB Tendon/Iwe/Iwl Inspection ML0713500972007-05-0202 May 2007 Meeting Handout on Alternate Safety Power Source - Summer ML0713500662007-05-0202 May 2007 Meeting Handout on RF16 Outage Review V.C. Summer ML0713501092007-05-0202 May 2007 Meeting Handout on Summary of HP Performance During RF16 ML0706703232007-03-0101 March 2007 (Westinghouse AP1000) ML0627602452006-09-27027 September 2006 V. C. Summer Nuclear Station RF-16 Outage Information ML0618002632006-09-18018 September 2006 Crack Growth Rates in a PWR Environment of Nickel-Base Alloys from Davis-Besse and V. C. Summer Plants ML0707202262006-06-22022 June 2006 Sce&G VC Summer Site - Site Characterization Visit (Handouts) ML0615106012006-05-23023 May 2006 EPRI HRA Users Group Review of Draft NUREG-1842 ML0609702982006-03-31031 March 2006 NRC Cy 2005 Annual Assessment Meeting, Virgil C. Summer Nuclear Station ML0609405532006-03-20020 March 2006 Meeting Summary - Enclosure 2. Handouts for Meeting with South Carolina Electric & Gas Company Re Results of Root Cause Evaluation for the High Failure Rate on the January 10, 2006, Operator Licensing Initial Written Examination ML0600304352005-12-30030 December 2005 Rii Presentation Revised - RF-15 Outage Information 2024-01-25
[Table view] |
Text
NFPA 805 Transient Combustible Controls V. C. Summer Nuclear Tom Keckeisen, Operations
-Fire Protection
PURPOSE Provide an Overview of the Executive Summary Describe the Process for the Control of Transient Combustibles and Ignition Sources Specifically address Controls in Areas with Performance
-Based Fire Modeling
Objective Goal is to maintain a program consistent with NFPA 805 requirements and its supporting documentation and calculations NFPA 805 Section 3.3.1.2, Control of Combustible Materials NFPA 805 Section 3.3.1.3, Control of Ignition Sources VCSNS Transient Controls Controls to be based on risk by assigning combustible control levels based on the Fire PRA and performance based insights.
Developing an Engineering calculation to define fire zone PRA CDF sensitivity to transients.
Controls levels defined by consensus between Fire Protection and PRA engineers.
Industry is developing a white paper on the general transient combustible/ignition source process.
Assignment of Control Levels Level of controls will range from Low (Level 4) to High (Level 1)
Level 4: Fire Zones with low risk contribution. Fire PRA assumes full compartment burn and zones are not sensitive to higher transient influence factors
(~130 Fire Zones)
Level 3: Level 4 Fire Zones (low risk) which contain specific areas with deterministic fire barriers and /or separation features (i.e. ERFBS or 20 ft separation) (~15 Fire Zones)
Assignment of Control Levels Level 2: Fire Zones with higher risk contribution or zones which are sensitive to higher transient factors . Primarily AC/DC distribution and electrical cable chases (~30 Fire Zones).
Level 1: Fire Zones governed by Performance
-Based Fire Modeling or zones where failure to follow transient controls are impacting (6 Fire Zones).
Risk Insights from the Fire PRA Full Compartment Burn
-Low Risk Contribution
-No credit for any fire protection feature
-Assigned as Level IV
-Several exceptions to this general assignment of this level
Risk Insights from the Fire PRA Fire Size and Location
- Peak Heat Release Rate (HRR)
- 317kW - If Quantity / Type can cause a Peak HRR > 317kW. May not be analyzed in Fire PRA.
- Scenarios governed by limiting fire size to 317kW need to be controlled
Risk Insights from the Fire PRA Transient Influence Factors
- Weighting Factors for Transient Ignition Frequencies
- Maintenance / Occupancy / Storage (1-Low, 3-Medium, 10
-High) - Sensitivity Calculation: All factors increased to 10
-High - Fire Zones with Significant Impact (CDF increase >1E
-06) are more sensitive to increases in Transient Influence Factors
- Assigned as Level II
Risk Insights from the Fire PRA Probability of Failing to Follow Controls
-Fire PRA analyzed two (2) of the Risk Significant Zones assuming a probability of failing to follow combustible controls
-Risk Significant Zones with Low Transient Influence Factors
-Assigned as Level I
Risk Insights from the Fire PRA Fire Scenarios with Structural Steel
-Structural Steel Bounding Analysis: Potential fire scenarios involving structural collapse due to thermal damage -3 Fire Zones meet criteria: Unprotected steel / high in
-situ fire source.
- No transient combustible impact
-Low Risk Other NFPA 805 Elements Spatial Separation (20 ft.) per NFPA 805, 4.2.3.3 (a)
Electrical Raceway Fire Barrier Systems (ERFBS) per 4.2.2.2 (c)
Fire Protection Equivalency Evaluations (FPEEE) - "Adequate for the Hazard"
VCS Performance Based Fire Modeling NFPA 805 4.2.4.1 permits the use of fire modeling for addressing variances from deterministic requirements (VFDR's)
Applied to Four (4) Fire Areas which have cable tray targets close to the floor Fire model specifies administrative controls to be designed and implemented so that fire damage to the targets within the fire zone is prevented.
VCS Performance Based Fire Modeling The Four (4) Fire Areas where Performance Based Fire Modeling was used will be considered Level I Areas and have the highest level of control.
These areas will be treated as "restricted" areas (i.e. no transient combustibles allowed without FP approval and elevated compensatory actions)
VCS Transient Controls Level 4: General Housekeeping Controls Apply Level 3: General Housekeeping Controls Apply with additional controls for areas with deterministic requirements.
Level 2: Designated by Fire PRA as Risk Significant. Controls on quantities, duration, Class B combustibles.
Level 1: Restricted Area
- No Transient Combustibles Allowed without additional evaluation / approval required to ensure fire damage is prevented as documented in fire model.
Implementation Transient Combustible Control Procedure Plant Housekeeping / Staging / Storage Procedure Maintenance Work Area Procedure /
Instruction Fire Prevention Inspection Procedures Plant Area Designation / Physical Controls
Summary Goal is to maintain a program consistent with NFPA 805 requirements and its supporting documentation and calculations Provides a Risk Approach to the control of Transient Combustibles and Ignition Sources Allows for a more focused controls, inspections, observations in higher risk areas.
Provides site specific information to support additional risk considerations
Questions or Comments