Generic Letter 2006-02 Grid Reliability and the Impact on Plant Risk - - PowerPoint PPT Presentation

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Generic Letter 2006-02 Grid Reliability and the Impact on Plant Risk - - PowerPoint PPT Presentation

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Generic Letter 2006-02 Grid Reliability and the Impact on Plant Risk and the Operability of Offsite Power Michael E. Mayfield Director, Division of Engineering April 24, 2006 1 1 Generic Letter 2006-02 Grid Reliability and the Impact on

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Michael E. Mayfield Director, Division of Engineering April 24, 2006

Generic Letter 2006-02

Grid Reliability and the Impact on Plant Risk and the Operability of Offsite Power

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  • Tools NRC uses to communicate with licensees:

– Information Notices – Regulatory Issue Summaries – Generic Letters – Bulletins – Orders

Generic Letter 2006-02

Grid Reliability and the Impact on Plant Risk and the Operability of Offsite Power

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  • What is the process for issuing a Generic Letter?
  • Why did the NRC issue a Generic Letter on grid

reliability?

Generic Letter 2006-02

Grid Reliability and the Impact on Plant Risk and the Operability of Offsite Power

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  • April 6, 2005, Draft Generic Letter issued for public

comment

  • January 9 and 10, 2006, Federal Energy Regulatory

Commission (FERC) participated in NRC public workshop

  • n draft Generic Letter
  • February 1, 2006, Issued Generic Letter
  • February 16, 2006, FERC issued Interpretive Order
  • April 3, 2006, Received Generic Letter responses

Grid Reliability Generic Letter Status

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  • Generic Letter focused on Licensees’ capability

to:

– Monitor grid conditions to determine the operability of

  • ffsite power systems

– – Incorporate grid conditions in the assessment and Incorporate grid conditions in the assessment and management of risk management of risk-

  • associated maintenance

associated maintenance – – Evaluate site Evaluate site-

  • specific increases in loss of offsite power

specific increases in loss of offsite power frequency and impact on station blackout frequency and impact on station blackout

Focus of Generic Letter 2006-02

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  • Performed assessments of operational readiness
  • f offsite power for nuclear power plants

– Temporary Instruction 2515/165 [ML060550258]

  • Issued a generic communication to inform

licensees of a recent NRC study on loss of offsite power events

– – Information Notice 2006 Information Notice 2006-

  • 06 [ML053200013

06 [ML053200013 – – NUREG/CR NUREG/CR-

  • 6890 [ML060200477, ML060200479,

6890 [ML060200477, ML060200479, ML060200510] ML060200510]

Other Activities

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  • Preliminary results of NRC assessments of
  • perational readiness of offsite power for

nuclear power plants

  • Initial assessment of Generic Letter responses

Current Assessment