ML111080095

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NRC Slides for Peach Bottom Public Meeting on April 13, 2011
ML111080095
Person / Time
Site: Peach Bottom  Constellation icon.png
Issue date: 04/14/2011
From: Paul Krohn
Reactor Projects Region 1 Branch 4
To:
Krohn P
References
Download: ML111080095 (19)
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Text

Peach Bottom Annual As s es s ment Meeting Peach Bottom Atomic Power Station Safety Performance in 2010 U.S. Nuclear Plant Safety in light of J apan Events 2010 Reactor Overs ight Proces s Nuclear Regulatory Commis s ion - Region I 1

Agenda

  • Introduction
  • Dis cus s ion of Peach Bottom performance during 2010
  • Dis cus s ion of U.S. nuclear plant s afety in light of J apan events
  • NRC to addres s public ques tions
  • Clos ing remarks 2
  • Exelon operated Peach Bottom in a manner that pres erved the public health and s afety and protected the environment.
  • Licens ee Res pons e Column of the Action Matrix
  • Bas eline ins pections are planned for 2011 NRC As s es s ment Summary 3

NRC Action Matrix Increas ing s afety s ignificance Increas ing NRC ins pection efforts Increas ing NRC/Licens ee management involvement Increas ing regulatory actions Licensee

Response

Regulatory

Response

Degraded Cornerstone Multiple Repetitive Degraded Cornerstone Unacceptable Performance All Inputs are Green; Cornerstone Objectives Fully Met 1 or 2 White Inputs; Cornerstone Objectives Fully Met 2 White or 1 Yellow Input; Cornerstone Objectives Met w/

Moderate Degradation in Safety Performance Multiple Yellow Inputs or 1 Red Input; Cornerstone Objectives Met w/

Significant Degradation in Safety Performance Overall Unacceptable Performance; Plants not permitted to Operate w/in this Column; Unacceptable Margin to Safety

  • 5518 hours0.0639 days <br />1.533 hours <br />0.00912 weeks <br />0.0021 months <br /> of ins pection and related activities
  • 2 res ident ins pectors on s ite - res idents perform ins pections daily and can res pond to plant events at any time
  • 23 regional ins pectors
  • 2 major team ins pections Permanent plant modifications EP exercis e evaluation Ins pection Activities in 2010 5
  • All Green Performance Indicators
  • 4 Non Cited Violations
  • No Greater than Green ins pection findings J anuary 1 through December 31, 2010 Performance Indicator and Ins pection Res ults 6
  • Peach Bottom was operated s afely
  • Licens ee Res pons e column of the Action Matrix
  • Bas eline ins pections planned for 2011 2010 Peach Bottom As s es s ment Summary 7

Peach Bottom As s es s ment Meeting U.S. Nuclear Plant Safety in Light of J apan Events 8

U.S. Nuclear Plants Remain Safe

  • NRC requires plants to be des igned to withs tand s ite s pecific external events
  • NRC requires a defens e-in-depth approach to s afety
  • NRC performs independent s afety ins pections
  • NRC as s es s es new s afety information and requires improvements 9

Des igned for Site Specific Natural Events

  • Ts unamis
  • Hurricanes
  • Floods
  • Tornadoes 10

The NRC Requires Defens e-In-Depth

  • Redundant and divers e s afety s ys tems
  • Multiple phys ical barriers to contain radioactive material
  • Tes ting and ins pection of s ys tems important to s afety
  • Emergency planning 11

NRC Independent Safety Ins pections Reactor Overs ight Program

  • NRC ins pectors have unfettered acces s to all plant activities related to nuclear s afety and s ecurity
  • At leas t two full-time NRC res ident ins pectors at each nuclear plant
  • NRC ins pectors review many areas including Operations, Maintenance, Security, Engineering, Radiological Controls, and Fire Protection 12

NRC Requires Safety Improvements NRC as s es s es new s afety information, develops les s ons learned, and requires s afety enhancements :

13

  • NRC operating experience program
  • Rulemaking (Station Blackout)
  • Pos t TMI Actions
  • Pos t 9/11 Orders
  • Generic Safety Issues

14 State-of-the-Art Reactor Cons equence Analys is (SOARCA)

  • Es timates the outcomes of pos tulated and highly unlikely beyond des ign bas is s evere accident s cenarios
  • Incorporates the improvements in plant des ign, operation, accident management and updated computer codes
  • Accidents progres s more s lowly and lower radiological releas es occur than previous ly as s umed/predicted Surry Peach Bottom

Directors Comments 15 Darrell Roberts, Director Divis ion of Reactor Projects USNRC, Region I

Meeting Ground Rules Rich Barkley, PE, Nuclear & Environmental Engineer, Meeting Facilitator

  • Please ensure you have filled out a white card if youd like to speak
  • To be fair, the amount of time allotted will be limited and based on the number of speakers who sign up
  • Please be courteous to the speaker, NRC staff, and other meeting attendees
  • Written comments are welcome during and after this meeting - Please give them to any NRC Representative. Comments may be sent via mail via the NRC Meeting Feedback Form.

Ques tions 17

Information Res ources Regarding Events in J apan

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Contacting the NRC

  • Report a s afety concern
  • 1-800-695-7403
  • allegation@nrc.gov
  • General ques tions
  • www.nrc.gov
  • Region I Public Affairs
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