Long Term Operation Project LTO Project Objectives LTO Approach

Long Term Operation
Project
John Gaertner
EPRI Technical Executive
RIC 2011
LTO Project Objectives
• Provide technology for continued operation of current
nuclear plants worldwide at high performance levels
through 60 years and beyond
• Include technical basis for
“Life beyond 60” license renewal
© 2011 Electric Power Research Institute, Inc. All rights reserved.
2
LTO Approach
Accomplish objectives through coupled strategies:
1. Strategic planning
2. R&D projects in high-priority areas
3. Collaboration with DOE LWRS and NRC-RES
4. Pilot studies and demonstration plants to
obtain data, perform inspections, and validate
methods of assessment.
18 EPRI members constitute the LTO Task Force
to achieve results in 2014 - 2019
© 2011 Electric Power Research Institute, Inc. All rights reserved.
3
1
2011 R&D Projects – Material Aging
Primary System Materials Aging
• Primary metals: IGSCC in Ni-alloys
• Primary metals: IASCC of stainless steel
• Assessing RPV embrittlement beyond 60 years
• Welding of irradiated material
Welding
Direction
Concrete Aging
• Data and methods for concrete
and containment examinations
Cable Aging
Weld Pool
Auxiliary
beam
heating
around weld
region
• Testing and life management of medium voltage cables
© 2011 Electric Power Research Institute, Inc. All rights reserved.
4
2011 R&D Projects – Modernization
Nuclear Fuel
• SiC fuel clad – show benefits and implementation path
I&C and Information Technology (IT)
• Online monitoring
g infrastructure for critical assets
• Best practices from advanced I&C and information
systems applications
Safety Analysis
• Next generation safety margins and analysis codes
• New PRA tools to support design, operational, and
regulatory applications expected for LTO.
© 2011 Electric Power Research Institute, Inc. All rights reserved.
5
2011 R&D Projects – Asset Management
Life Cycle Management
• Integrated life cycle management of key components –
database and methods
• Asset management tools for planning and optimization
LTO Case Studies and Demonstrations
• Ginna and NMP-1
demonstration plant activities
• Refurbishment and up-rate
case studies
Omaha Public Power District (OPPD) Fort Calhoun's "Big Outage"
© 2011 Electric Power Research Institute, Inc. All rights reserved.
6
2
EPRI, DOE, and NRC Efforts are Collaborative
LTO
LWRS
–
Extension of MDM and PMDA
L
S
–
EASCC
L
S
–
–
IASCC (reactor internals)
RPV Embrittlement
S
C
L
–
Welding of Irradiated Materials
C
C
NRC
Primary System Aging Degradation
Aging of Concrete Structures
L
Cable Aging Testing and Prediction
L
Centralized On-Line Monitoring
L
S
Enhanced Safety and Risk Analysis
Integrated Life Cycle Management
S
L
L
Nuclear Fuel Designs and Analysis
Demonstration Plants Project
Advanced I&C, HSI, and Info Tech
S
C
S
L
C
L
Major Refurbishments and Up-rates
L
L
S
L = Lead
Cooling Water Availability
© 2011 Electric Power Research Institute, Inc. All rights reserved.
L
C
S = Support
C = Co-lead
L
7
Integration with License Renewal (LR) Process
• R&D Coordination involves
NEI and Utility LR Working
Groups
ISSUE TRACKING TABLE (ITT)
Issue
ID
Primary System Metals Aging
1.1
1.2
Primary System Metals Aging
Primary System Metals Aging
1.3
1.5
1.5
Primary System Metals Aging
Primary System Metals Aging
4.3
Digital I&C Modernization and
Enhanced Functionality
Underground and BOP Equipment
Aging
Cable Aging
9.1
2.1
Concrete and Connections Aging
2.1
Concrete and Connections Aging
2.1
Concrete and Connections Aging
Concrete and Connections Aging
Concrete liner corrosion
Primary System Metals Aging
10.1
1.2
Underground and BOP Equipment
Aging
Primary System Metals Aging
RPV embrittlement from fluence (Expected
for 80 yrs)
CASS NDE -- PRACTICAL leakage
detection study
Reactor internals repair
7.1
Environmental Interface
Water Availability and Quality
14.1
1.2
Coatings
Primary System Metals Aging
1.4
Primary System Metals Aging
Suppression pool repair & coating
Construction methods for shroud
replacement
Environmental effects on fatigue life of Ni
Alloy and stainless steel ("Corrosion
( Corrosion
Fatigue"), GSI-190
Examination of surveillance capsules
1.9
Primary System Metals Aging
4.2
Digital I&C Modernization and
Enhanced Functionality
Concrete and Connections Aging
I&C Compatibility Equivalency Database
2.1
18.1
Personnel knowledge Capture
No LTO issues
3.1
3.2
13.1
15.1
3.1
8.3
10.1
5.3
14.1
17.1
7.3
19.1
5.4
2.1
Generic Study for large component
replacement including costs ( ref. NEI
st
financial model from 1 round of LR)
On-line monitoring, diagnostics, and
prognostics for active components
On-line monitoring, diagnostics, and
prognostic for passive components
Containment temperature monitoring, source
term
Fuel pool liner cracking
On-line monitoring, diagnostics, and
prognostic for transformers and generators
Manufacturing capabilities (large
components, etc)
Selective leaching
Emergency Preparedness
Environmental Interface
Public Education about Current
Fleet vs.New Plants
Nuclear Fuel Design and
Performance
Concrete and Connections Aging
No LTO issues
Hydrodams – relicensing (FERC)
No LTO issues
Concrete and Connections Aging
4.1
Digital I&C Modernization and
Enhanced Functionality
Risk-informed Safety Margins
Characterization
Nuclear Fuel Design and
Performance
Nuclear Fuel Design and
Performance
Integrated, Phased Refurbsihments
and Uprates
Underground and BOP Equipment
Aging
NDE Technology Advancements
5.1
5.2
© 2011 Electric Power Research Institute, Inc. All rights reserved.
High strength bolts embedded in concrete
Integrated, Phased Refurbsihments
and Uprates
SSC Monitoring, Diagnostics, and
Prognositics
Integrated, Phased Refurbsihments
and Uprates
Underground and BOP Equipment
Aging
Nuclear Fuel Design and
Performance
Coatings
2.2
6.1
8.1
10.2
11.1
12.1
Cooling Tower structural issues
Concrete and Connections Aging
SSC Monitoring, Diagnostics, and
Prognositics
SSC Monitoring, Diagnostics, and
Prognositics
Equipment Qualification
Improvements
Fuel Pool Internals Aging
1.8
Upgrading Design, Licensing, and
Operating Bases
Primary System Metals Aging
1.9
Primary System Metals Aging
7.2
Environmental Interface
1.6
Primary System Metals Aging
1.7
Primary System Metals Aging
11.2
NDE Technology Advancements
20.1
Plant Security
LTO Status
EPRI Program
Status
ISFSI license including hydrogen
embrittlement
Identify issues for LTO
LTO
LTO
Identifying technology gaps and developing
enhanced analysis capabilities
SiC Cladding for Improved Operations
Advanced fuel analysis capability
Benchmark of decision and planning prcess
New materials and methods for system
replacement/refurbishment
Life Cycle Management of NDE information
on SSCs
Identify issues for LTO
Irradiation induced creep in reactor internals
(From NRC PMMD)
RPV cold over-pressurization life limits
(Expected for 80 yrs)
Coping with increased room temperatures
Extremely low prob. of failure (xLPR – risk
informed analysis for hidden welds, etc.)
Low allow steel corrosion from boric acid
(From NRC PMMD)
ISI inspectability (risk informed sampling
where access issues exist)
No LTO issues
Category
Priority
1-Life Limiting
1-High
1-Life Limiting
1-Life Limiting
1-High
1-High
Materials Program
Materials Program
1.3
2- Life Cycle Mgmt 3-Low
1.4
6-Not LTO
1.4
Materials/NDE Pgms
Materials/NDE Pgms
LTO
LTO
ER Program
ER Program
2
6-Not LTO
3
2- Life Cycle Mgmt 1-High
4
1-Life Limiting
5-Unknown
5-Unknown
2-Medium
3-Low
3-Low
5.3
5-Unknown
6
5-Unknown
3-Low
7
1-Life Limiting
1-High
3-Low
NDE Program
LTO
LTO
NDE Program
LTO
6-Not LTO
6-Not LTO
5.2
LTO
6-Not LTO
1.4
1.5
5.1
LTO
LTO
Materials Program
LTO
8
6-Not LTO
9
2- Life Cycle Mgmt 3-Low
10
1-Life Limiting
11
12
6-Not LTO
6-Not LTO
13
2- Life Cycle Mgmt 3-Low
3-Low
LTO
LTO (DOE)
LTO
ER Program
14
1-Life Limiting
15
6-Not LTO
16
5-Unknown
17
6-Not LTO
18
LTO
19
LTO
20
NDE Program
LTO
NDE Program
3-Low
2- Life Cycle Mgmt 3-Low
Fuels Program
2- Life Cycle Mgmt 1-High
21
2- Life Cycle Mgmt 2-Medium
22
5-Unknown
23
6-Not LTO
24
2- Life Cycle Mgmt 1-High
25
6-Not LTO
26
6-Not LTO
27
LTO
LTO
1-Life Limiting
28
5-Unknown
29
30
31
6-Not LTO
6-Not LTO
6-Not LTO
32
3-Low
3-Low
3-Low
6-Not LTO
1-Life Limiting
LTO
1-High
2- Life Cycle Mgmt 1-High
LTO
3-Modernization
LTO
4-Infrastructure
LTO
3-Modernization
LTO
4-Infrastructure
LTO
LTO
LTO
5-Unknown
1-High
3-Low
ER Program
LTO
LTO
LTO
Water chemistry (including fuel behavior)
Concrete issues database and resolution
guidelines
Pilot study of concrete cracking of fuel pools
at liner connections
Define architecture and functionality
NEI
LRWG
ID
1.1
1.1
1.2
LTO
LTO
7300 Systems (I&C)
Integrated monitoring and assessment of
degradation for RUL determinations
Submerged/ wetted cables & EQ and nonEQ
Building in-leakage (below grade Cat I
structures) & Intake Structure
Prolonged concrete radiation and
temperature exposure
Pre-tensioned concrete structures with posttensioning system (grouted/non-grouted)
2.1
2.1
Items are continually
re-assessed
Detailed Sub-issue Description
Environmental SCC of Ni Alloy base material
and weld materials (600, 690, 82/182,
52/152)
Environmental SCC of stainless steel
IASCC of austenitic stainless steel internals
(shrouds, baffle bolts, …) and cast stainless
steel
Environmental effects on fracture resistance
of Ni Alloy and stainless steel
Isolated issues of FAC and wasting of Low
alloy steels in SGs
Isolated issues of FAC and wasting of
Internals near control rods
Isolated issues of FAC and wasting of BWR
bottom head drain
NDE methods (irreg. welds, vol. exam of
CASS and J-grooves, eddy current of SGs)
1.9
8.2
– All potential LTO issues are
assessed and ranked
– Progress is tracked
Primary System Metals Aging
Primary System Metals Aging
Primary System Metals Aging
1.5
1.5
10.1
• EPRI maintains LTO Issue
Tracking Table (ITT) on
behalf of all stakeholders
Primary Issue Description
1.1
ER Program
1-High
1-High
2-Medium
2-Medium
4-Infrastructure
2-Medium
3-Modernization
2-Medium
2- Life Cycle Mgmt 2-Medium
LTO
4-Infrastructure
LTO
2-Medium
2- Life Cycle Mgmt 3-Low
LTO
LTO
LTO
Materials/NDE Pgms
1-Life Limiting
3-Low
5-Unknown
3-Low
6-Not LTO
6-Not LTO
NDE Program
6-Not LTO
6-Not LTO
8
3