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Long Term Operation: Status of EPRI Project. John Gaertner EPRI Technical Executive October 2009. Long Term Operations (LTO) Project Objectives. Provide technology for continued operation of the current nuclear plants worldwide at high performance levels through 2030 and beyond

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long term operation status of epri project

Long Term Operation: Status of EPRI Project

John Gaertner

EPRI Technical Executive

October 2009

long term operations lto project objectives
Long Term Operations (LTO) Project Objectives
  • Provide technology for continued operation of the current nuclear plants worldwide at high performance levels through 2030 and beyond
  • Includes technical basis for

“Life beyond 60”

  • Be responsive to societal concerns of global warming, energy security safety, cost of energy
  • Collaboratewithother organizations includingDOE LWR Sustainability (LWRS) Program
criteria for lto activities
Criteria for LTO Activities

Technical basis for license renewal and life extension

  • Identify and quantify potential “life limiting” issues
  • Aging management and life-cycle management
  • Opportunities for modernization and uprates
  • Enabling technology (e.g., analysis methods)

Results by 2014 - 2019 support decisions

For operation to 60 years and beyond

2009 projects
2009 Projects

Materials Aging

  • Primary metal corrosion
    • characterize and model IGSCC in Ni-alloys
    • characterize, model, mitigate IASCC of stainless steel
  • RPV steels – effects of high flux and fluence (DOE effort -- no 2009 EPRI funding)
  • Concrete performance in LWRs and methods to evaluate issues

Nuclear Fuel

  • SiC cladding
  • Advanced fuel modeling in FALCON to support SiC fuel issues

Safety Analysis

  • Safety assessment and PRA tools gap analysis

I&C and Information Technology (IT)

  • Online monitoring guidelines, diagnostic tools, and pilot applications
  • Advanced I&C, human interface, and information technology capabilities
integration with license renewal and life extension processes
Integration with License Renewal and Life Extension Processes

ISSUE TRACKING TABLE (ITT)

  • NEI conducts periodic R&D coordination meetings with EPRI, DOE, INL, NRC,…
  • NEI Life Beyond 60 Task Force to advise LR process
  • EPRI to maintain LTO Issue Tracking Table (ITT) on behalf of all stakeholders.

ITT answers the questions:

Do we know all the issues?

Do we understand the issues?

Are we working on the right stuff?

candidate 2010 new activities
Candidate 2010 New Activities
  • Support for plant refurbishments and up-rates
  • Remaining useful life (RUL) predictions for buried piping
  • Extension of Materials Degradation Matrix for primary metals to include failure mechanisms to 80 years
  • Characterizing potential life-limiting issues based on current practices. Who affected? When affected?
  • 3D plant modeling and simulation to support outage management and configuration management
  • Under-water welding for reactor internals repair and replacement
  • Advanced cable testing technology to predict RUL and perform life cycle management of cables.
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