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MONTHYEARML13301A6732013-09-24024 September 2013 License Amendment Request Transition to 10 CFR 50.48(c) - NFPA 805 Performance Based Standard for Fire Protection Project stage: Request ML13337A2702013-12-0505 December 2013 Acceptance Review Results Regarding the National Fire Protection Association Standard 805 Transition License Amendment Request Project stage: Acceptance Review ML14336A2562014-12-0404 December 2014 Regulatory Audit Plan Regarding the National Fire Protection Association Standard 805 Transition License Amendment Request (Tac Nos. MF2993 and MF2994) Project stage: Other ML14356A0192015-01-12012 January 2015 Request for Additional Information Regarding the National Fire Protection Association Standard 805 Transition License Amendment Request Project stage: RAI ML15075A1042015-03-11011 March 2015 Request for Additional Information Regarding the National Fire Protection Association Standard 805 License Amendment Request Project stage: Request ML15107A0292015-04-13013 April 2015 Request for Additional Information Regarding the National Fire Protection Association Standard 805 License Amendment Request Project stage: Request ML15142A7292015-06-0303 June 2015 Request for Additional Information Regarding the National Fire Protection Association Standard 805 License Amendment Request Project stage: RAI ML15152A0822015-06-0404 June 2015 Presentation for the June 4, 2015 Public Meeting Regarding the National Fire Protection Association Standard 805 License Amendment Request Project stage: Meeting ML15167A0082015-07-0101 July 2015 Summary of June 4, 2015 Meeting with Exelon Generation Company, LLC, Regarding License Amendment Request Transition to NFPA 805 Project stage: Meeting ML15190A1112015-07-0606 July 2015 Request for Additional Information Regarding the National Fire Protection Association Standard 805 License Amendment Request Project stage: Request ML15183A0162015-07-15015 July 2015 Request for Additional Information Regarding the National Fire Protection Association Standard 805 License Amendment Request Project stage: RAI ML15231A5962015-09-21021 September 2015 Summary of Site Audit to Support the Review of the License Amendment Request to Transition to the NFPA 805 Fire Protection Licensing Basis Project stage: Approval ML15282A0832015-10-0808 October 2015 October 8, 2015, Public Meeting Regarding the NFPA-805 License Amendment Application - Final Project stage: Meeting ML15282A5122015-10-21021 October 2015 Summary of Meeting with Exelon Generation Company, LLC, on Calvert Cliffs, Units 1 & 2, License Amendment Request Regarding Transition to NFPA 805 Performance-Based Standard for Fire Protection for Light Water Reactor Project stage: Meeting ML16060A3612016-02-24024 February 2016 Response to Request for Additional Information Regarding the National Fire Protection Association Standard 805 License Amendment Request Project stage: Response to RAI 2015-04-13
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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) 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 ML23033A6662023-02-0909 February 2023 Summary of Public Meeting with Constellation Energy Generation, LLC (Constellation) to Discuss Its Request for Alternatives for Certain Steam Generator Weld Inspections for Calvert Cliffs 1 & 2, Byron 1 & 2, Braidwood 1 & 2, and Ginna ML23033A6672023-01-30030 January 2023 Public Call with Constellation January 30, 2023 (Slides) ML22013A3942022-01-13013 January 2022 Presentation Information for Pre-Submittal Meeting Regarding Relief Request to Use the Carbon Fiber Reinforced Polymer (Cfrp) Composite System 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) ML21144A0172021-05-24024 May 2021 Spent Fuel Pool Cooling - Shutdown Cooling Licensing Design Basis License Amendment Request Pre-Submittal Meeting ML21134A0162021-05-24024 May 2021 Spent Fuel Pool Cooling - Shutdown Cooling Licensing Design Basis License Amendment Request - NRC Pre-submittal Meeting Telecon May 24, 2021 (EPID L-2021-LRM-0051) (Slides) ML20261G7322020-09-16016 September 2020 Pre-Submittal Slides Extend 120-month Isi/Ist Interval Under 50.55a ML20246G8772020-09-0303 September 2020 Licensee'S Presentation for September 3, 2020 Public Telephone Conference ML20178A4202020-06-30030 June 2020 NEI Slides for June 30, 2020, Public Meeting on COVID-19 Response ML20175A8722020-06-23023 June 2020 Risk-Informed Inservice Inspection - U.S Nuclear Regulatory Commission (NRC) - Four Element Risk-Informed Approach ML20170B0212020-06-23023 June 2020 NRC Pre-Submittal Meeting Byron Unit 2 One-Time Deferral of Reactor Pressure Vessel Head Penetration Nozzle (Rpvhpn) 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) 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 ML20168A3192020-06-15015 June 2020 Joint Annual Assessment Meeting for Pa/Md Power Plants - Webinar Presentation 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 ML19246B7162019-08-29029 August 2019 Meeting Between NRC and Exelon Regarding Calvert Cliffs-2 LAR to Use Framatome ATF LTAs 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 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 ML18276A0712018-10-0404 October 2018 Exelon'S Presentation for October 4, 2018 Public Pre-Submittal Meeting on Planned Calvert Cliffs 10CFR50.69 LAR ML18171A0842018-06-21021 June 2018 GSI-191 Program Use of Risk Metrics for Containment Sump Tech Spec Operability Determination June 21, 2018 Public Meeting Slides (MF8521, MF8522; L-2016-LRM-0001) ML18190A3922018-06-14014 June 2018 Licensee Presentation Material for June 14, 2018 Public Meeting ML18136A4932018-05-16016 May 2018 Licensee'S Slides for Pre-Application Meeting W/Exelon Re Planned GSI-191 LAR for Calvert Cliffs (L-2016-LRM-0001) ML18096A0222018-04-0404 April 2018 Annual Assessment Meeting 04/04/2018 Handouts ML18096A9902018-03-12012 March 2018 NRC Pre-Submittal Call Briefing Notes, Calvert Cliffs Emergency Planning Future Licensing Actions 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 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 ML17143A1612017-05-23023 May 2017 Annual Assessment Meeting Handout and Sign in Sheet ML16274A0012016-09-30030 September 2016 PWR MSIP Analysis and Measurements 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 ML15321A3702015-12-0101 December 2015 GSI-191 Program Strainer Head Loss Testing and Option 2b Closure Approach ML15308A1072015-11-0505 November 2015 TSTF-505 LAR - NRC Pre-Submittal, November 5, 2015 Meeting Slides ML15282A0832015-10-0808 October 2015 October 8, 2015, Public Meeting Regarding the NFPA-805 License Amendment Application - Final ML15279A4992015-10-0808 October 2015 October 8, 2015, Public Meeting Regarding the NFPA-805 License Amendment Application ML15222A5472015-08-31031 August 2015 GSI 191 Program Chemical Effects Testing Update Option 2b Closure Approach ML15152A0822015-06-0404 June 2015 Presentation for the June 4, 2015 Public Meeting Regarding the National Fire Protection Association Standard 805 License Amendment Request 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) 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 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 ML23033A6662023-02-0909 February 2023 Summary of Public Meeting with Constellation Energy Generation, LLC (Constellation) to Discuss Its Request for Alternatives for Certain Steam Generator Weld Inspections for Calvert Cliffs 1 & 2, Byron 1 & 2, Braidwood 1 & 2, and Ginna ML23033A6672023-01-30030 January 2023 Public Call with Constellation January 30, 2023 (Slides) ML22124A1492022-05-10010 May 2022 (Ccnpp) Control Element Assembly (CEA) Recovery Time Improvement Project LAR Pre-Submittal Non-Proprietary (Public) ML22124A1482022-05-10010 May 2022 (Ccnpp) Control Element Assembly (CEA) Recovery Time Improvement Project LAR Pre-Submittal Redacted (Public) ML22013A3942022-01-13013 January 2022 Presentation Information for Pre-Submittal Meeting Regarding Relief Request to Use the Carbon Fiber Reinforced Polymer (Cfrp) Composite System 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 ML21144A0172021-05-24024 May 2021 Spent Fuel Pool Cooling - Shutdown Cooling Licensing Design Basis License Amendment Request Pre-Submittal Meeting ML21134A0162021-05-24024 May 2021 Spent Fuel Pool Cooling - Shutdown Cooling Licensing Design Basis License Amendment Request - NRC Pre-submittal Meeting Telecon May 24, 2021 (EPID L-2021-LRM-0051) (Slides) ML20261G7322020-09-16016 September 2020 Pre-Submittal Slides Extend 120-month Isi/Ist Interval Under 50.55a ML20246G8772020-09-0303 September 2020 Licensee'S Presentation for September 3, 2020 Public Telephone Conference 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 ML20163A6542020-06-18018 June 2020 2020 NRC Annual Assessment Webinar Presentation - Pennsylvania and Maryland Facilities (Beaver Valley, Calvert Cliffs, Limerick, Peach Bottom, Susquehanna) 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 ML20168A3192020-06-15015 June 2020 Joint Annual Assessment Meeting for Pa/Md Power Plants - Webinar Presentation ML19246B7162019-08-29029 August 2019 Meeting Between NRC and Exelon Regarding Calvert Cliffs-2 LAR to Use Framatome ATF LTAs 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 ML18276A0712018-10-0404 October 2018 Exelon'S Presentation for October 4, 2018 Public Pre-Submittal Meeting on Planned Calvert Cliffs 10CFR50.69 LAR ML18171A0842018-06-21021 June 2018 GSI-191 Program Use of Risk Metrics for Containment Sump Tech Spec Operability Determination June 21, 2018 Public Meeting Slides (MF8521, MF8522; L-2016-LRM-0001) ML18136A4932018-05-16016 May 2018 Licensee'S Slides for Pre-Application Meeting W/Exelon Re Planned GSI-191 LAR for Calvert Cliffs (L-2016-LRM-0001) 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 ML16328A2832016-11-18018 November 2016 Supplemental Presentation Slides for 10/25/2016 Public Meeting Via E-mail from K.Greene to R.Guzman Calvert Cliffs GSI-191 Resolution Update ML16307A4902016-10-25025 October 2016 Presentation Slides from Public Meeting Calvert Cliffs GSI-191 Resolution Update ML16274A0012016-09-30030 September 2016 PWR MSIP Analysis and Measurements ML16242A1782016-09-0101 September 2016 Presentation Slides from Public Meeting Regarding Calvert Cliffs GSI-191 Resolution Update ML16198A0012016-07-18018 July 2016 Presentation Slides from Public Meeting Regarding Calvert Cliffs GSI-191 Resolution Update ML16077A1562016-03-22022 March 2016 Fleet: Pre-application Teleconference with Exelon to Discuss a Potential License Amendment Request Regarding Operating Training Standards ML15321A3702015-12-0101 December 2015 GSI-191 Program Strainer Head Loss Testing and Option 2b Closure Approach ML15308A1072015-11-0505 November 2015 TSTF-505 LAR - NRC Pre-Submittal, November 5, 2015 Meeting Slides ML15279A4992015-10-0808 October 2015 October 8, 2015, Public Meeting Regarding the NFPA-805 License Amendment Application ML15282A0832015-10-0808 October 2015 October 8, 2015, Public Meeting Regarding the NFPA-805 License Amendment Application - Final ML15222A5472015-08-31031 August 2015 GSI 191 Program Chemical Effects Testing Update Option 2b Closure Approach ML15152A0822015-06-0404 June 2015 Presentation for the June 4, 2015 Public Meeting Regarding the National Fire Protection Association Standard 805 License Amendment Request ML14230A9132014-08-18018 August 2014 Enclosure - Fuel Performance and Cask Internals - July 17, 2014, Summary of Meeting with Exelon Corporation to Discuss Request for Additional Information No. 4 to the Calvert Cliffs ISFSI License Renewal Application (Docket No. 72-08) TAC L ML14230A9112014-08-18018 August 2014 Enclosure - Example AMP - July 17, 2014, Summary of Meeting with Exelon Corporation to Discuss Request for Additional Information No. 4 to the Calvert Cliffs ISFSI License Renewal Application (Docket No. 72-08) TAC L24475 2024-05-16
[Table view] |
Text
NRC Meeting June 4, 2015 CCNPP NFPA 805 License Amendment Application
Agenda g
Current Licensing Status: Jim McQuighan Fire modeling RAI status (tied to PRA-3): Mark Schairer Fire Modeling RAI status and summary: Mark Schairer.
FPRA status: Rob Cavedo.
FM RAI 01.l.i.01 (MCB): Mark Schairer.
Att. L: Request # 7: Wood in North Service Building. Mark Schairer.
Att. L: New request (#9): FPE - 01.01- Insulation Materials. Mark Schairer.
Att. L: Request q # 8: Self Approval pp of Non-metallic conduit. Paul Darby.
y SSA - RAI 11: Marinite Board. Paul Darby.
PRA - 07.01 & 08.01: PRA Modeling of tray & junction boxes. Rob Cavedo.
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CCNPP Team Members:
Exelon/CCNPP Representatives Jeff Stone - Exelon Senior FPRA Manager Jim McQuighan - Exelon Manager, NFPA 805 Pat Furio - Exelon Principal Regulatory Engineer (phone line)
Rob Cavedo - Exelon Senior Staff FPRA Engineer Pat Pringle - Exelon Senior PRA analyst Paul Darby - Exelon NFPA 805 Electrical Engineer Chris Dobry - Exelon (CCNPP) Fire Protection Engineer Usa Usamaa Farradj a adj - FPRA co consultant su a (p(phone o e line) e)
Tom Daniels - FPRA consultant (phone line)
Mark Graham - FPRA consultant (phone line)
Mark Schairer - Fire modeling consultant Jeff Quinn - NFPA 805 consultant (phone line)
Steve Southard - Fire Protection Engineer (phone line) 3
Current Licensing g Status NRC Review LAR: On-going NRC (Round #1) RAIs:
60 day 2/9/2015 (done) 90 day 3/11/2015 (done) 120 day 4/13/2015 (done)
Draft NRC RAI follow-ups (60/90 day): 5/14/2015 (done)
Clarification call 5/21/2015 (done)
NRC public meeting (120 day RAIs, etc): 6/04/2015 NRC final comments on all RAIs: Target: June/July 2015 Transmit final results: Att. C, G, S & W + 2 months Safety Evaluation: Fall 2015 4
Current Licensing g Status Attachment S-2:
S-2: Modifications will be completed by April 30, 2018. This date assumes SER approval within two years from LAR submittal.
Unit 1: RFO 2016 & RFO 2018.
Unit 2: RFO 2017.
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Current Licensing g Status Attachment S-3:
S-3: Implementation of the new NFPA 805 Fire Protection Program to include procedure changes, process updates and training to affected plant personnel. This will occur (within) 12 months following the issuance of an approved SER from the NRC unless that date falls within a scheduled refueling outage. Then, implementation will occur within 60 days after the startup from that scheduled refueling outage.
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Fire Modeling g RAIs : Status & Summaryy The fire model has been reviewed and updated (as necessary) for FM-RAI 01-Inclusion of secondary combustible in fire modeling analysis (b, c, d, i.vii, k.vi)
Modeling of HEAF events (f)
Incorporation of wall/corner effects (h)
Main control room fire modeling cabinet heat release rates (HRRs) and propagation to adjacent cabinets (i.viii, i ix l.i, i.ix, l i l.ii) l ii)
MCR HRR now uses the 15-bin discretization (i.iv)
Abandonment criteria (i.xiii)
Transient/fixed ignition g source area, elevation, location, and fire g growth characteristics (i.vi, i.xi, k.iii, l.iii,)
FDS: device placement and material properties selected (i.xii, i.xiv, k.ii,)
Cable spreading Room Detector activation time updated (k.i)
Multi-Compartment M lti C t t Analysis A l i Screening step clarification/revision (j.i, j.iii, j.v,)
Ventilation characteristics (j.iv) 7
Fire PRA Status: PRA-03,, PRA-19 a & d.
Initial Fire Modeling is complete Total risk quantification is in progress Total Delta Risk, Risk of Recovery Actions will be evaluated IAW RG 1.174 criteria.
Final Quantification will begin after receipt of final NRC comments on RAI responses The final results will accompany the response to RAI PRA 3, 19a and 19d.
Att h Attachment t C, C G, G S andd W updates d t willill be b transmitted t itt d with ith the th PRA RAI-3 RAI 3 response.
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FM RAI 01.l.i.01: MCB Fire Modeling g The main control room (MCR) fire modeling analysis has been revised to model all main control board (MCB) vertical sections using the heat release rate (HRR) from NUREG/CR-6850, Table G-1, case 5, which is for vertical cabinets with unqualified cable fire in more than one cable bundle open doors cable, doors .
This is the most conservative HRR value available in NURE/CR-6850 Table G-1 and has a 98th percentile HRR of 1002kW.
The risk results did increase, however it appears (preliminarily) that the total plant risk is still acceptable ( & will meet the risk objectives for transition).
Since the NUREG/CR NUREG/CR-6850 6850 bounding HRR (i.e.,
(i e worst case) is being used used, this is an acceptable approach and no further justification is needed.
At this time, there is no plan to use the alternate approach. However, CCNPP cannot say with 100% certainty that this will be the final answer until the final results are complete.
CCNPP proposes to answer this follow up RAI with our responses to any 120 day follow-up RAIs or the integrated analysis (i.e., PRA RAI 03).
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Att. L: Requestq #7 - Wood in NSB/(Power ( Block))
NFPA 805 Section 3.3.1.2(1) requires that Wood used within the power block shall be listed pressure-impregnated or coated with a listed fire-retardant application.
Three (3) fenced-in storage areas within the basement of the North Service Building (part off power block) bl k) contains t i non-compliant li t wood.
d Limits on quantities of wood are administratively established by the fire protection engineer.
Fire risk is mitigated g by:
y Minimal fixed ignition sources.
Installed NFPA 13-compliant sprinkler system designed for the hazards in the area.
Fire barriers to adjacent fire areas.
Loss of all credited cables in the areas of concern has been analyzed - plant can achieve and maintain a safe and stable condition (i.e., hot standby) with a NSCA success path free of fire damage and no recovery actions.
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New Att. L: ((Request q #9):
) Insulation Materials NFPA 805 Section 3.3.4 requires that Thermal insulation materials, radiation shielding materials, ventilation duct materials, and soundproofing materials shall be noncombustible or limited combustible.
M Many radiation di ti shielding hi ldi materials t i l are nott ttested t d ffor combustibility b tibilit b butt rather th are ttested t d for flame spread and/or ignitability.
For instances that CCNPP neither complies with this rule, nor has prior NRC approval either:
- 1) a performance-based evaluation approval request (Attachment L) in accordance with 10 CFR 50.48(c)(2)(vii) will be developed that will request approval based on the following criteria:
- Fire retardant types that have passed NFPA 701, Standard Methods of Fire Fire-retardant Tests for Flame Propagation of Textiles and Films (NFPA 805 Section 3.3.1.2(2) requirement for plastic sheeting).
- Have a flame spread rating commensurate with Class A interior wall/ceiling finish materials in accordance with NFPA 101 101, Life Safety Code (NFPA 805 Section 3.3.3 requirement for interior finishes).
- 2) Any materials that do not meet the above criteria will be evaluated for acceptability (i.e., as adequate for the hazard) as part of the Attachment L request.
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Att. L: Request q #8: Non-metallic Raceways y /Conduit Original Construction Requirement for underground and concrete-embedded applications (corrosive conditions - metal subject to failure).
Not relied upon for grounding.
Not credited to be fire resistant in the NFPA-805 analysis.
Do not contribute to fire loading.
Concrete and ground materials prevent:
Internal fires from impacting credited external circuits External fires from impacting credited internal circuits.
We intend on revising g Att. L Request q #8 to remove the request q for p permission to evaluate
& self-approve the use of Non-metallic raceways (conduit) in applications that are neither embedded in concrete or buried underground as a licensee identified change.
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SSA - RAI 11: Marinite Boards in Containment Deterministically, the marinite boards will not be credited as a 20 foot separation barrier (non-intervening combustible).
Probabilistically, the marinite boards are credited as a fire break to prevent fire spread between the east & west areas of containment.
New VFDRs will be evaluated IAW NFPA-805 4.2.4 as part of the PRA integrated response p ((PRA RAI 03). )
Construction:
Twenty-five feet (min.) of each cable tray is covered top & bottom w/ 1/2 in.
Marinite XL.
Banded B d d tto th the trays t - 3/8 iin. stainless t i l steel t lb banding di 12 gauge ((min.).
i )
Inspected prior to start-up in accordance with procedures.
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PRA - 07.01 & 08.01: FPRA FAQ 13-005 & FAQ 13-006 FPRA FAQ 13-005: PRA modeling of cable hot work fires/self-ignited cable.
FPRA FAQ 13-006: PRA modeling of junction box fires.
We intend to revise the analysis using the guidance provided in FPRA FAQs13-005 &
13-006.
Results will be included in PRA PRA-3 3 integrated response.
response 14