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Category:Slides and Viewgraphs
MONTHYEARML24029A1742024-01-30030 January 2024 Constellation Pre-Application January 30, 2024, Meeting Slides - Proposed Alternative to Utilize Code Case N-932, Alternative Requirements for Acceptance of Containment Base Metal Corrosion or Erosion ML23317A0712023-11-14014 November 2023 NRC Pre-Submittal Meeting on November 14th, 2023 - TSTF-591 and Selected 50.69 License Condition Updates (EPID L-2023-LLM-0098) (Slides) ML23255A1042023-08-11011 August 2023 Slides - Constellation - Pre-Application EP 9/18/2023 Draft CEG Presubmittal SG Performance Monitoring Plan Meeting Handout ML23055A2712023-03-0202 March 2023 March 2, 2023, Preapplication Meeting to Discuss Planned Amendments to Adopt TSTF-505 and 10 CFR 50.69 (EPID L-2023-LRM-0007) - Slides NEI 99-01, Slides - Constellation - Pre-Application EP 2/23/2023 Meeting Slides2023-02-21021 February 2023 Slides - Constellation - Pre-Application EP 2/23/2023 Meeting Slides ML22053A2912022-02-22022 February 2022 NRC Slides for February 25, 2022 Meeting - Acceptance Review of Proposed Alternative to Adopt ASME Code Case N-921 at Dresden and Quad Cities ML21314A4472021-11-10010 November 2021 Slides for Presubmittial Meeting for Proposed Alternative to Adopt ASME Code Case N-921 to Extend the Inservice Inspection Interval ML21194A1822021-07-13013 July 2021 and Quad Cities Nuclear Generating Stations 2020 Annual Assessment Meeting Slides ML21162A3322021-06-11011 June 2021 BWR Fleet Relief Request Associated with RPV Instrument Nozzle Repairs ML20261G7322020-09-16016 September 2020 Pre-Submittal Slides Extend 120-month Isi/Ist Interval Under 50.55a ML20238B8572020-08-25025 August 2020 Quad 2019 Hq Online EOC Slides ML20178A4202020-06-30030 June 2020 NEI Slides for June 30, 2020, Public Meeting on COVID-19 Response ML20170B0212020-06-23023 June 2020 NRC Pre-Submittal Meeting Byron Unit 2 One-Time Deferral of Reactor Pressure Vessel Head Penetration Nozzle (Rpvhpn) Inspections ML20169A5592020-06-16016 June 2020 Steam Generator License Amendment Request Pre-Submittal Meeting (NRC) - 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2009, Slides ML0929400522009-10-22022 October 2009 Meeting Power Uprate Meeting Slides ML0911802142009-04-0707 April 2009 NRC End-of-Cycle Meeting Slides ML0911802252009-04-0707 April 2009 NRC - Quad Cities Annual Assessment Meeting Slides ML0812007842008-06-0202 June 2008 Meeting Slides, Nrc/Exelon Licensing Counterparts Meeting. 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Bradley Fewell - Allegations ML0615901482006-03-0707 March 2006 RIC 2006 Presentation - T1E - Pamela B. Cowan - Licensing Issues ML0604603992005-11-0808 November 2005 Part 3 of the Meeting Slides, Quad Cities Replacement Steam Dryer Meeting on November 8 - 9, 2005 2024-01-30
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RIC 2005 Session T-H1 Power Uprates Power Uprates Amidst Chaos David Lochbaum Nuclear Safety Engineer Union of Concerned Scientists March 8, 2005
Nuclear Safety Trends NRC and industry often cite improving safety trends over past two decades, like:
Slide 2
Foundation for Nuclear Safety Trends Improving safety trends are a byproduct of prescriptive regulatory process and plethora of measures like worst-case calculations, ample margins for uncertainties, single-failure criterion, maximum credible accident design basis, etc.
Slide 3
Challenge to Nuclear Safety Trends Extended power uprate is just one of many concurrent regulatory changes. Others:
o Reduced testing/inspection scopes &
frequencies o Longer limiting condition of operation (LCO) durations o Best-estimate calculations Slide 4
Concern Power uprates are but one of many concurrent initiatives that reduce safety margins.
Justification for each initiative is based on improving trends achieved using a regulatory process that is being sacked wholesale.
Quad Citiess shaky experience demonstrates that we simply do not know enough to undertake so many concurrent margin reducing initiatives - so why are we doing it?
Slide 5
Reversal of Nuclear Safety Trends?
NRC and industry often cite improving safety trends over past two decades, like:
Slide 6