Subsequent License Renewal Draft Generic Aging … · • The current regulatory framework is...
Transcript of Subsequent License Renewal Draft Generic Aging … · • The current regulatory framework is...
Subsequent License Renewal
Draft Generic Aging Lessons Learned Report
and Standard Review Plan
June 1, 2016
Steve Bloom, Branch Chief
Subsequent License Renewal,
Guidance, and Operations Branch
Agenda
• License Renewal Background
– Process
– Principles
– Status
• Subsequent License Renewal (SLR)
– Background
– Technical Issues
– Guidance
– Timeline
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License Renewal Application
Review Process
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Environmental
Review
NRC Renewal
Decision
License Renewal
Application
Submitted to NRC
Safety
Review
Review by
ACRS
Hearing,
if requested
and granted
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License Renewal Principles
• Regulatory process ensures that the current
licensing basis provides and maintains an
acceptable level of safety
• Each plant’s current licensing basis must be
maintained during the renewal term in the same
manner, and to the same extent, as during the
original licensing term
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License Renewal Status
• Older plants will reach the end of 60 years in 2029
• 83 units have renewed licenses
• 12 units currently under review
• 5 upcoming units between 2017 and 2022
• 2 units in 2019 for SLR
U.S. Commercial Nuclear Power
Reactors: Years of Operation by the
End of 2016
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45 reactors
38 reactors
16 reactors
1 reactor
>40 years 30-39 years 20-29 years 0-19 years
Projected U.S. Nuclear
Power Capacity
Megawatts
If all
existing
nuclear
plants
operate for
80 years
If all existing nuclear plants
operate for 60 years
Sources: Energy Information Administration, Nuclear Regulatory Commission
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Subsequent License Renewal
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• Principles of license renewal would continue to be effective to ensure safety
• The Commission reaffirmed that the current regulatory processes are sufficient
• The current regulatory processes allows for
• Guidance updates to address emerging issues
• Enhancements to the oversight process to focus additional attention on AMP implementation
• Imposing new requirements, such as license conditions, to ensure safe plant operation
• Optimization of application review process
Technical Issues for
Operation Beyond 60 years
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• Reactor pressure vessel neutron embrittlement at high fluence
• Irradiation-assisted stress corrosion cracking of reactor internals and primary system components
• Concrete and containment degradation
• Electrical cable qualification, condition monitoring and assessment
SLR Guidance
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• Generic Aging Lessons Learned for Subsequent License
Renewal (GALL-SLR) Report (NUREG-2191)
‒ Provides generic evaluation of existing aging management programs
‒ Acceptable methods to manage aging effects
‒ Plant-specific alternatives may be proposed
• Standard Review Plan for Review of Subsequent License Renewal Applications for Nuclear Power Plants (SRP-SLR) (NUREG-2192)
‒ Provides guidance to NRC staff reviewers to perform safety reviews of SLR applications
SLR Guidance Basis • Expected aging differences for operations beyond
60 years
• New domestic and foreign operating experience
• Aging management program audits and inspections
occurring during the license renewal application
review process and the period of extended operation
• Implementation of GALL Report and SRP, Rev. 2
• Issuance of interim staff guidance
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SLR Timeline
2014 2015 2018 2016 2017 2019 2021 2020
Develop
GALL & SRP
Draft GALL & SRP
Public Meeting &
Comments
Disposition
Final GALL &
SRP Draft GALL & SRP
for comments
First Application
Submitted First SLR
License Issued?
First Application
Review?
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2022
Summary
• The current regulatory framework is adequate for SLR
• SLR guidance documents for will be issued in 2017 to
facilitate NRC readiness to review of SLR applications in a
consistent and timely manner
• At least one utility has stated its intention to submit a SLR
application in 2019
• Industry is conducting significant research to ensure the
technical issues are being addressed
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