ML052360432
| ML052360432 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 08/11/2005 |
| From: | Lain P Plant Systems Branch |
| To: | Hannon J Plant Systems Branch |
| Lain P, NRR/DSSA/SPLB 415-2346 | |
| Shared Package | |
| ML052360426 | List: |
| References | |
| Download: ML052360432 (35) | |
Text
Oconee NFPA-805 Pilot Kickoff August 11, 2005 NRC Region II Offices Atlanta, Ga 1
Duke Participants Harry Barrett - Duke NFPA-805 Transition Project Technical Lead (ONS)
Dennis Henneke - PRA Engineer (NGO -
Severe Accident Analysis Group)
Reene Gambrell - Regulatory Compliance (ONS)
George Mc Aninch - Design Basis Group Manager (ONS) 2
Agenda NFPA-805 Background - Dennis Henneke Appendix R Reconstitution - Harry Barrett NFPA-805 Project Plan - Harry Barrett NFPA-805 Pilot Process - Harry Barrett Fire PRA - Dennis Henneke 3
NFPA-805 Background Dennis Henneke PRA Engineer (NGO Severe Accident Analysis Group) 4
Background
Duke Unique Features and Approaches Armored Cable Longer time to damage, lower spurious operation probability, no cable-to-cable interactions Exclusionary Analysis Did not originally trace all cables, only opposite/available train cables for each fire area Oconee Facility Design Class 1E Electrical Distribution located in most significant fire area (Turbine Building)
No train separation All trains of EFW in Turbine Building 5
Background
Duke Unique Features and Approaches Standby Shutdown Facility Bunkered facility with separate power and control to provide RCP seal cooling and decay heat removal Single Spurious design basis Single, worst case spurious, addressed in design documents but not in SER Three different licensing criteria (Appendix R, post Appendix R and NUREG 0800)
Standardization is difficult 6
Appendix R Reconstitution Harry Barrett ONS NFPA-805 Transition Technical Lead 7
App R Reconstitution - contd Main Goals Revalidate Post-Fire Safe Shutdown Strategy Make sure something didnt get missed Bring analysis up to current-day standards Get away from Exclusionary Analysis method Improve Documentation Locate components and cables Develop tools necessary to deal with multiple spurious actuations 8
App R Reconstitution - contd ONS Appendix R Reconstitution Status Unit 2 and common circuit/cable analysis complete, working on compliance assessments - will be used as input to NFPA-805 Project Unit 2 used as model for Unit 1 (very similar routes)
Unit 3 analysis started in early July, scheduled complete by Mid-2006 9
App R Reconstitution - contd MNS Appendix R Reconstitution Status Analysis started 2/14/05, complete by 7/31/06 CNS NUREG 0800 Reconstitution Status Start 4th qtr 2005, complete by 2nd qtr 2007 Both MNS and CNS reconstitution scope includes electrical circuit coordination study Reconstitution is considered a necessary prerequisite for NFPA-805 Transition 10
Duke Power Transition Overview Schedule ONS MNS CNS 2005 2006 2007 2008 2009 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd ONS NRC MNS NRC CNS NRC Audit Audit Audit (June)
ONS Unit ONS Unit ONS ONS Fire MNS-MNS MNS MNS Fire CNS-CNS Cable CNS CNS Fire 11
Duke Power Transition Detailed Schedule ID Task Name Work Start 2006 2007 Half 2, 2005 Half 1, 2006 Half 2, 2006 Half 1, 2007 Half 2, 2007 J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D 1 OCONEE: NFPA 805 TRANSITION 25,698 hrs Mon 7/11/05 2 NRC PILOT OBSERVATION KICKOFF 0 hrs Thu 8/11/05 8/11 3 OCONEE: Phase 2 - Task 1 Fundamental Fire Protection Progr 820 hrs Thu 8/18/05 4 Sub-Task 1.1 NFPA Chapter 3 Fundamental Fire Protection 220 hrs Mon 8/29/05 5 Non-Fire Area Specific Element Transition - Duke 90 hrs Mon 8/29/05 duke - Oconee fire protection - James Oldham 6 Non-Fire Area Specific Element Transition - Contractor 20 hrs Mon 8/29/05 contractor - fire protection[20%]
7 Fire-Area Specific Element Transition - Duke 90 hrs Wed 12/14/05 duke - Oconee fire protection - James Oldham 8 Fire-Area Specific Element Transition - Contractor 20 hrs Wed 12/14/05 contractor - fire protection[20%]
9 NRC REVIEW OF CHAPTER 3 TRANSITION 0 hrs Tue 1/3/06 1/3 10 DUKE DECISION POINT 0 hrs Tue 1/10/06 1/10 11 Sub-Task 1.2 Equivalency Evaluations - Duke 50 hrs Thu 8/18/05 duke - Oconee fire protection - James Oldham 12 Sub-Task 1.2 Equivalency Evaluations- Contractor 550 hrs Thu 8/18/05 contractor - fire protection[150%],duke - Ocone 13 OCONEE: Phase 2 - Task 2 Nuclear Safety Performance Crite 2,252 hrs Mon 10/10/05 14 Sub-Task 2.1 Methodology Review and MSO Expert Panel 240 hrs Mon 10/17/05 contractor - safe shutdown[50%],duke - Oconee safe shutdown - Harry Barret 15 NRC REVIEW OF NUCLEAR SAFETY METHOD TRANSITIO 0 hrs Mon 10/24/05 10/24 16 DUKE DECISION POINT 0 hrs Thu 10/27/05 10/27 17 Sub-Task 2.2 CAFTA Fault Tree Development Pilot 120 hrs Mon 10/10/05 contractor - safe shutdown[50%]
18 INPUT FROM SSA RECONSTITUTION 0 hrs Fri 6/30/06 6/30 19 Sub-Task 2.3 Fire Area by Fire Area Transition - Duke 40 hrs Mon 11/28/05 duke - Oconee safe shutdown - Harry Barrett[40%]
20 Sub-Task 2.3 Fire Area by Fire Area Transition - Contractor 120 hrs Mon 11/28/05 contractor - safe shutdown 21 Sub-Task 2.4 Transient Analysis Review and Calcs - Duke 500 hrs Mon 10/17/05 duke - Oconee safe shutdown - Harry Barrett[30%],duke 22 Sub-Task 2.4 Transient Analysis Review and Calcs - Contract 152 hrs Mon 10/17/05 contractor - safe shutdown 23 NRC REVIEW OF TRANSIENT ANALYSIS 0 hrs Tue 1/3/06 1/3 24 DUKE DECISION POINT 0 hrs Tue 1/10/06 1/10 25 Sub-Task 2.5 Recovery Action Transition - Duke 760 hrs Mon 11/28/05 duke - Oconee safe shutdown - Harry Barrett 26 Sub-Task 2.5 Recovery Action Transition - Contractor 320 hrs Mon 11/28/05 contractor - safe shutdown[43%]
27 NRC REVIEW OF RECOVERY ACTION TRANSITION 0 hrs Wed 7/26/06 7/26 28 DUKE DECISION POINT 0 hrs Thu 8/3/06 8/3 29 OCONEE: Phase 2 - Task 3 Non-Power Operational Modes Trans 100 hrs Mon 7/10/06 duke - pra - Dennis and Coop 12
NFPA-805 Transition Project Plan Harry Barrett ONS NFPA-805 Transition Technical Lead 13
805 Transition Project Plan
- continued Heavily based on NEI 04-02 Detailed task breakdown to perform transition Split into 3 Phases Preliminary Assessment Analytical Implementation Preliminary Phase complete (ended with our Letter of Intent) 14
805 Transition Project Plan
- continued Submitted 2/28/05 15
805 Transition Project Plan
- continued Transition Process includes developing and implementing a new design basis for fire induced spurious actuations The Safe Shutdown Analysis shall address all single spurious and all potentially risk-significant multiple spurious Risk is above Reg. Guide 1.174 criteria (CDF 1E-06, LERF > 1E-07), prior to operator response.
DID or Safety Margins are inadequate per NEI Implementation Guide, prior to operator response 16
805 Transition Project Plan
- continued Analytical Phase includes 5 major parts Fundamental Fire Protection Program &
Design Elements (Task 1)
Nuclear Safety Performance Criteria (Task 2)
Non-Power Operational Modes (Task 3)
Radioactive Release (Task 4)
Fire PRA (Task 5) 17
805 Transition Project Plan
- continued Task 1 is divided into two subtasks:
Fundamental Fire Protection Program Transition Equivalency Evaluations Task 2 is divided into five subtasks:
Methodology Review and Multiple spurious expert panel CAFTA Fault Tree Development Fire Area-by-Fire Area Transition Transient Analysis Review Recovery Action Transition 18
805 Transition Project Plan
- continued FP Fundamentals Review and Nuclear Safety Review and Analytical Confirmation Confirmation Phase Identify outliers / Identify outliers /
noncompliances noncompliances Perform Engineering Analyses Non-power FP Radioactive operational Nuclear Safety Fundamentals Release mode Analyses Assessment Assessment Assessment Perform Change Perform Change Evaluation if needed Evaluation if needed Verify / Establish Monitoring Program Confirm / Establish Adequate Documentation / Quality and Configuration Control Regulatory Submittal and Approval 19
805 Transition Project Plan
- continued Any areas of non-compliance with NFPA-805 rules will require a Performance-Based Change Evaluation Can include Fire Modeling Always includes Fire Risk Assessment All of the transition process will be documented in the Transition Report Transition Report will be submitted to NRC for review (ONS is Pilot) 20
805 Transition Project Plan
- continued All Recovery Actions will transition as Performance-Based actions All must meet feasibility All must be achievable prior to non-recoverable plant conditions All recovery actions that were not previously approved must be handled through the Change Evaluation process and receive a Risk Review 21
805 Transition Project Plan
- continued Upon completion of transition activities, we will submit a License Amendment to NRC; We may have some program/plant attributes that require prior NRC approval These issues can not be closed (accepted within the licensing basis) until we receive the approved License Amendment from NRC May result in the need to maintain required actions/compensatory measures until receipt of License Amendment 22
NFPA-805 3-Site Transition Organization George Mc Aninch Project Sponsor Harry Barrett Transition Technical Lead NFPA-805 Contractors as necessary Bob Johansen Steve Graham Dennis Henneke David Goforth James Oldham TBD TBD MNS Technical Lead Cable Testing Lead NGO PRA Lead CNS Technical Lead Fire 3-Site Lead ONS Technical Lead RGC Lead Brandi Weaver Jim Jones Eddy Fortner MNS PM Cable Test PM ONS PM NGO PRA Electrical CNS PM Doe-D Mebane Cable Test Contractors Matt Hogan Harold Lefkowitz Expert Panel Expert Panel Expert Panel MNS FPE as necessary CNS FPE ONS FPE OPS SRO PRA Contractors OPS SRO OPS SRO as necessary System Engineer System Engineer System Engineer Electrical Engineer Electrical Engineer Electrical Engineer FPE FPE FPE PRA Engineer PRA Engineer PRA Engineer 23
NFPA-805 ONS Transition Organization George Mc Aninch Project Sponsor Harry Barrett Transition Technical Lead NFPA-805 Contractors as necessary Reene Gambrell Dennis Henneke TBD Steve Graham James Oldham RGC Lead NGO PRA Lead ONS Technical Lead Cable Testing Lead Fire 3-Site Lead Brandi Weaver Eddy Fortner Julius Bryant NGO PRA Electrical ONS PM Cable Test PM PRA Contractors Harold Lefkowitz Cable Test Contractors Expert Panel as necessary ONS FPE as necessary OPS SRO System Engineer Electrical Engineer FPE PRA Engineer 24
ONS Pilot Plant Process Harry Barrett ONS NFPA-805 Transition Technical Lead 25
ONS Pilot Plant Status ONS has been designated as a Pilot Plant for NFPA-805 Transition NRC will perform observations of the transition process Some of those observation meetings will be in Atlanta, some at Oconee and some may be in White Flint (Rockville, Md) 26
ONS Pilot Plant Issues We propose that Pilot Observations be grouped in two categories Milestone Observations Status Updates Milestone Observations are special meetings intended to discuss/review specific issues Methodology/Concept approval for major project processes Major decision points 27
ONS Pilot Plant Issues Examples of Milestone topics include:
Multiple Spurious Licensing Basis (Oct 05)
Nuclear Safety Performance Criteria Transition (Oct 05)
Chapter 3 Compliance Issue Disposition (Jan 06)
Enforcement Discretion (Jan 06)
Transient Analysis (Jan 06)
Radioactivity Release (April 06)
Recovery Actions (July 06)
Non-Power Operations (July 06)
Change Evaluations (Nov 06)
Transition Report (Nov 06) 28
ONS Pilot Plant Issues Status Updates are meetings to review ongoing processes, analyses, activities A general meeting frequency of Quarterly is being considered, more frequently if major milestones dictate the need for more 29
ONS Pilot Plant Considerations First implementation of EPRI/NRC Fire Risk Requantification Process What special emphasis is needed for this?
Will you need a different team makeup?
Is there a need for additional communication avenues (telephone conferences, status reports, etc.)?
What impact does Pilot Plant Status have on Security?
How will Security impact the conduct of Pilot Plant Public Meetings?
30
Fire PRA in Support of NFPA-805 Dennis Henneke PRA Engineer (NGO Severe Accident Analysis Group) 31
Changes in Fire PRA Methodology EPRI and the NRC have recently developed a new Fire PRA method that will support Fire PRA applications (like NFPA-805):
EPRI TR-1008239, NUREG/CR-6850.
Will be on the Fire PRA web site, once issued.
American Nuclear Society (ANS) is developing a Fire PRA Standard which is expected to be used for important NFPA-805 change calculations.
32
What Is planned for Fire PRA?
ONS Fire PRA work has started, following the new EPRI/NRC method.
Bidding for contract work soon.
Total project 5000-7000 hours. 1/3 of work by Duke folks:
Mostly complete by late 2006 (other than the paperwork).
MNS Fire PRA expected to start mid-2006.
CNS Fire PRA expected to start mid-2007.
33
Fire PRA Task Definitions Sub-Task 5.1 - Plant Boundary Definition and Partitioning Sub-Task 5.2 - Fire Ignition Frequencies Sub-Task 5.3 - Fire PRA Component Selection Sub-Task 5.4 - Fire PRA Cable Selection Sub-Task 5.5 - Qualitative Screening (None)
Sub-Task 5.6 - Fire Induced Risk Model Sub-Task 5.7 - Quantitative Screening Sub-Task 5.8 - Scoping Fire Modeling Sub-Task 5.9 - Detailed Circuit Failure Analysis 34
Fire PRA Task Definitions Sub-Task 5.10 - Circuit Failure Mode Likelihood Analysis Sub-Task 5.11 - Detailed Fire Modeling Sub-Task 5.12 - Post-Fire Human Reliability Analysis Sub-Task 5.13 - Seismic-Fire Interactions Assessment Sub-Task 5.14 - Fire Risk Quantification Sub-Task 5.15 - Uncertainty and Sensitivity Analysis Sub-Task 5.16 - Fire PRA Documentation 35