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					    IAEA Activities for Plant Life
Management for Long Term Operation

              Ki Sig Kang

           K.S.Kang@iaea.org

             October 2010
              Introduction of Participants
Algeria
Argentina,
Belgium,
Bulgaria,
China,
Czech
Finland,
France,
Germany,
Hungary,
Japan,
Korea,
Netherlands
Russia,
Slovakia,
Spain
Sweden,
Turkey
Ukraine
UK
USA
EC/JRC-IE
IAEA          89 Experts/ Engineers from 23 countries
Key Considerations for PLiM for LTO
                      • Definition of realistic
                          economic targets
                      •   Identification of SSC-
                          related safety issues,
                          their ranking;
                      •   Technical issues;
                      •   Forecasting the
                          market conditions;
                      •   Forecasting the
                          political and
                          regulatory
                          environment;
                      •   Availability of
                          knowledge &
                          personnel.
Plant Life Management for Long Term Operation Activities

                               • PLiM for Long Term
                                   Operation Approach
                               •   Periodic Safety Review
                               •   Ageing Management
                               •   SALTO Mission
                               •   RPV Irradiation
                                   Embrittlement
                               •   Heavy Component
                                   Replacement
                               •   Effective In-Service
                                   Inspection
                               •   Power Uprates
                               •   Continuous Process
                                   Optimization (I&C)
                               •   Review mission

                               • Power Reactor Information
                                   Systems
Specialists Meeting Irradiation Embrittlement and
Mitigation, Gloucester, England, UK, May 2001

• Master Curve methodology is continuing to evolve, but
  still needs physical pinning

• Research on VVER steels has developed a current
  parametric understanding, but more Microstructural work
  is needed to clearly define mechanistic basis

• Consequences of Dose rate effects are secondary in
  nature since they primarily impact economics rather than
  safety of RPVs
Irradiation Effects and Mitigation in RPV &
RPVI, Gus Khrustalny, Russia May 2004
• Knowledge base expanded in four key themes
• Added new RPV component - Internals
Hot issues of PLiM for LTO
• Life Management
  • PSR, LRA
• Refurbishment
  • RPV head, SG etc
• Power Uprate
  • Side effects of Power Uprate
• I&C Modernization
  • Digital I&C systems and HMI
    for CR

• Human Ageing
  Management
  • Keep the performance
    excellence.
 Achievements from March 2007 to
 October 2010
 Publication
  • Safety Guide : NS-G-2.12, Ageing Management for NPPs
1 • Safety Report : SRS- 57, Safe Long Term Operation of NPPs,
  • Safety Series : SS-17, SALTO Guidelines for peer review of long
     term operation

 • NES : NP-T-3.2 : Heavy Component Replacement in in NPPs:
     Experience and Guidelines
 •   NES : NP-T-3.11 Integrity of Reactor pressure vessel in NPPs:
     Irradiation Embrittlement Effects
 •   TECDOC-1577 : Strategy for Assessment of WWER SG Tube
     Integrity
 •   TECDOC-1590 : Application of RCM to Optimize O&M
 •   CD proceeding : STI/PUB/1362- 2007 PLiM International Maintenance
                                              RCM : Reliability Centered
                                                                         Symposium
                                                    CRP : Coordinated Research Project
                                                    NES : Nuclear Energy Series          8
  Achievements from March 2007 to
  February 2009
 • TECDOC - 1631 : Master Curve Approach to Monitor the Fracture
    Toughness of RPVs
  • TECDOC-1627 : Review and Benchmark of calculation methods for
    structural integrity assessment of RPVs during PTS
2 • TECDOC-1651: Configuration Management using IT technology(2010)
  • NES NP-T-3.1 : Risk informed In Service Inspection (2010)

 Finalization
 • NES : Good Practices to Manage Stress Corrosion Cracking of Austenitic
   Alloys in Light Water Reactors
 • NES : Power Uprating in NPPs: Experiences and Guidelines

 • NES : Water chemistry, corrosion control for secondary side of WWER
 • TRS : Significance of Pressurized Thermal Shock to RPV Integrity
   Implementation
 • NES : Plant Life Management Model


                                                                         9
Top 10 Nuclear Energy Series in IAEA

• NES -NP-T-3.2 : Heavy Component
  Replacement :
  • Since publication in Nov. 2008, more than 55,429 times down
    load from the IAEA web site.
  • More than 2,000 times hit per month


• NES - NP-T-3.11: Integrity of RPV in NPPs :
  • Since publication in April 2009, more than 31,653 times down
    load from the IAEA web site.
  • More than 1,200 times hit per month
Web Hits through Aug 24, 2010
• On-Line Monitoring for Improving Performance, Part 2:
  2,339

• On-Line Monitoring for Improving Performance, Part 1:
  2,315

• Overview of Stakeholder Involvement in
  Decommissioning: 1,189

• Initiating Nuclear Power Programs: Responsibilities of
  Owners/Operators: 434
Heavy Component Replacement
               •• Organization for Heavy
                  Organization for Heavy
                  Components Replacement
                  Components Replacement
               •• Technical Issues for
                  Technical Issues for
                   •• PWR
                      PWR
                        •• Steam Generator
                            Steam Generator
                        •• Pressurizer
                            Pressurizer
                        •• Reactor Coolant Piping
                            Reactor Coolant Piping
                        •• RPV head
                            RPV head
                        •• Vessel Internal
                            Vessel Internal
                  ••   BWR
                       BWR
                        •• Vessel Internal components
                            Vessel Internal components
                        •• Reactor Coolant Piping
                            Reactor Coolant Piping
                  ••   PHWR
                       PHWR
                        •• Fuel Channel and Feeder Piping,
                            Fuel Channel and Feeder Piping,
                          SG
                           SG
               •• Safety and Licensing regulatory
                  Safety and Licensing regulatory
                 issues
                  issues
Strategies for a SG Replacement
     One piece replacement
SG 2 Parts Components Handling




                                   Handling of
                                    SG lower
                                      PART
 Handling of SG upper/lower PART     FES1
Integrity of Reactor Pressure Vessel In NPPs:
Assessment of Irradiation Emrbittlement Effects in RPV Steels

                                       ••   Description of PRVs
                                             Description of PRVs
                                       ••   Effect of irradiation of
                                             Effect of irradiation of
                                            mechanical properties
                                             mechanical properties
                                       ••   Mechanisms
                                             Mechanisms
                                            governing the
                                             governing the
                                            irradiation induced
                                             irradiation induced
                                            embrittlement of LWR
                                             embrittlement of LWR
                                            RPV
                                             RPV
                                       ••   Assessment of the
                                             Assessment of the
                                            mechanical properties
                                             mechanical properties
                                            of operating RPVs
                                             of operating RPVs
                                       ••   Effects of irradiation
                                             Effects of irradiation
                                            on RPV Operation
                                             on RPV Operation
Managed RPV Macro / Micro Scope




Comparison of PWR and BWR
RPVs with the same output

                            Composition profiles across an
                            irradiation-induced solute atom
                            cluster
Ageing Management for NPPs

                • Basic concepts
                • Proactive strategy for ageing
                    management;
                •   Ageing management in operation;
                •   Management of obsolescence;
                •   Review of ageing management for
                    long term operation;
                •   Interfaces with other technical areas;


                • Annex I: Existing publications on
                  ageing management;
                • Annex II: Examples of contents of
                  data collection and record keeping
                  systems;
                • Annex III: Examples of significant
                  ageing mechanisms and susceptible
                  materials and components.


                                                        17
Looking back… 2nd PLiM Symposium

2nd PLiM Symposium
• Oct. 15- 18 2007
• Shanghai, China

• 175 contributions, keynotes,
  papers and posters were
  submitted.
• 300 participants from 35
  Member States and 3
  international organizations.




                                 18
Upgrade VELFand Piping in WWER NPPs


                                                                  Date &
No   Type      VERLIFE Main Text and Appendices                             Year
                                                                  Place
1    TM     Preparation of main body of upgraded VERLIFE      11-13 Mar, 2009
            procedure                                         Czech Rep.
2    TM     Attachment A: Leak-before-break assessment        ?            2009
            procedure of WWER piping during operation
3    TM     Attachment B No-break-zone assessment             ?            2010
            procedure of WWER piping during operation
4    TM     Attachment C: Integrity and lifetime assessment ?              2010
            procedure of RPV internals in WWER NPPs
            during operation
5    TM     Attachment D: Procedure for probabilistic         ?            2011
            approach for failure and lifetime assessment of
            RPV and Piping
6    WS     Application of VERLIFE                                         2011
International Generic Ageing Lessons Learned in support
of Long Term Operation

 IGALL expected programme stages and results                                  operators

  Scoping Meeting/     Launching of the   Progress of the
                                           programme in             IGALL
  Briefing for PMs     Programme                                     final
     of the MSs                           accordance with
                                           time schedule            report

                        Organization
                           set-up                                             regulators
                          Steering
                           Group
                          Working
                          Groups

                                                                               vendors




  1st – 2nd Q 2010   2nd -3rd Q 2010      2011-12                2nd Q 2013


                                                            WANO, June 2010               20
IGALL Purpose


Internationally agreed basis on what constitutes
  acceptable AMPs:
    • Technical basis for managing ageing
    • Practical guidance for managing ageing
    • Collection of AMPs
    • Knowledge base
    • Support for application of Safety Standards
           Technical Cooperation Activities in
•
                         2009
    Developing and Implementing PLiM and PLeX Programmes in NPPs
•   Establishing a Structural Integrity Assessment Procedure for NPP Components with Flaws
•   Action Plans for PLiM in NPPs
•   Implementing Plans for the LTO in NPPs
•   Developing Capabilities for Nuclear Safety Operational Analysis for the Power Uprate


                                                             RER 4030
                                                             BUL 4013
                                                             HUN 4017
                                                             UKR 4014

                                                                                         RAS 4031
                                                                                         CPR 4029
                                                                                         CPR 4030
                                                                                         CPR 4032
                                                                                         ROK 9047




                        RLA 4021
                        ARG 4093
                        MEX 4057
                        MEX 4058
                        BRA 4058
2010- 2013 Panned Activities
• Programme Level
  • Preparation of refurbishment outage management
  • Development of the PLiM models

• Technological Aspects
  • Fatigue analysis procedures:
  • Mitigation or prevention strategies to the obsolescence of equipment
  • Develop Alloy 600 and weld material aging management guidelines
  • Consolidate the International material degradation mechanism report or list
    on the basis of OEF
  • Concrete ageing with special emphasis to unlined pre-stressed structures

• Human Resource Management Aspects
  • Development of Training Course material (Text Book and Working Book) for
      PLiM for LTO
• Regulatory Aspects
  • Regulatory Approaches to PLiM for LTO
  New Coordinated Research Projects
    related to PLIM/LTO
1) Continued Operations Beyond 60 Years in Nuclear
   Power Plants
2) Benchmarking of Flow Accelerated Corrosion
   calculation methods and to develop FAC Guidelines

  Int. Conference on 3rd Plant Life Management
  for Long Term Operation, 2Q 2012, USA

  Close cooperation with IFAM, JRC/IE and
  OECD/NEA
Main Achievements on PLiM/LTO
- Publications of Good Practices & Lesson Learned


  •• Publications related to Engineering
     Publications related to Engineering
     and Management Support for
      and Management Support for
     Competitive Nuclear Power (1980-
      Competitive Nuclear Power (1980-
     2009)
      2009)
    •• Safety Standards and Guidelines Doc.
        Safety Standards and Guidelines Doc.
    •• Plant Life Management Doc.
        Plant Life Management Doc.
    •• Component Specific Ageing Mang. Doc.
        Component Specific Ageing Mang. Doc.
    •• Maintenance Optimization Doc.
        Maintenance Optimization Doc.
    •• Digital I&C and Monitoring Doc.
        Digital I&C and Monitoring Doc.
    •• Research Rector Doc.
        Research Rector Doc.

     http://www.iaea.org/NuclearPower/
     Downloads/PLIM/Bibliography.pdf

				
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