United States Nuclear Regulatory Commission - Protecting People and the Environment

Regulations and Guidance

This page lists regulations and guidance for pressurized-water reactor sump performance.

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10 CFR

Document Number Description
10 CFR 50.46 Acceptance criteria for emergency core cooling systems for light-water nuclear power reactors

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SECY Papers

Document Number Description
SECY-12-0093 Closure Options for Generic Safety Issue - 191, Assessment of Debris Accumulation on Pressurized-Water Reactor Sump Performance
SECY-10-0113 Closure Options for Generic Safety Issue – 191, Assessment of Debris Accumulation on Pressurized Water Reactor Sump Performance
SECY-06-0078 Status of Resolution of GSI-191, "Assessment of [Effect of] Debris Accumulation on PWR Sump Performance"
SECY-04-0150 Alternate Approaches for Resolving the Pressurized Water Reactor Sump Blockage Issue (GSI-191), Including Realistic and Risk-Informed Considerations
SECY-03-0089 Proposed Bulletin: "Potential Impact of Debris Blockage on Emergency Sump Recirculation at Pressurized-Water Reactors," June 2, 2003

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Regulatory Guides

Document Number Description
RG 1.82,
Revision 4
Water Sources for Long-Term Recirculation Cooling Following a Loss-of-Coolant Accident, March 2012

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Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants (NUREG-0800)

Document Number Description
6.2.2 Containment Heat Removal Systems, Revision 5, March 2007

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Safety Evaluations

Date Description
12/21/2007

WCAP-16530-NP, Final Safety Evaluation of Post Accident Chemical Effects in Containment Sump Fluids to Support GSI-191

12/20/2007 Final Safety Evaluation for Pressurized Water Reactor Owners Group (PEROG) Topical Report (TR) WCAP-16406-P, "Evaluation of Downstream Sump Debris Effects in Support of GSI 191," Revision 1
11/21/2007 Draft SE, PWROG Topical Report WCAP-16530-NP, "Evaluation of Post-Accident Chemical Effects in Containment Sump Fluids to Support GSI-191"
12/06/2004 GSI-191 SE, Revision 0, "Pressurized Water Reactor Containment Sump Evaluation Methodology"
12/06/2004 GSI-191 SE, Revision 0, "Safety Evaluation of NEI Guidance on PWR Sump Performances"
12/06/2004 GSI-191 SE, Revision 0, "Review of NEI PWR Sump Performance GR Appendices"
12/06/2004 GSI-191 SE, Revision 0, Appendix I: "ANSI/ANS JET MODEL"
12/06/2004 GSI-191 SE, Revision 0, "Appendix II: "Confirmatory Debris Generation Analyses"
12/06/2004 GSI-191 SE, Revision 0, "Appendix III: "Volunteer Plant Containment Pool CFD Analysis "
12/06/2004 GSI-191 SE, Revision 0, " Appendix IV: "Debris Transport Comparison"
12/06/2004 GSI-191 SE, Revision 0, " Appendix V: "Confirmatory Head Loss Analyses"
12/06/2004 GSI-191 SE, Revision 0, "Attachment V-1. NUREG/CR-6224 Head Loss Temperature Assessment"
12/06/2004 GSI-191 SE, Revision 0, "Appendix VI: "Volunteer Plant Blowdown/Washdown Analysis"
12/06/2004 GSI-191 SE, Revision 0, "Appendix VII: "Characterization of Latent Debris"
12/06/2004 GSI-191 SE, Revision 0, "Appendix VIII: "Formation and Prediction of Thin Bed Behavior"

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Other Guidance

Date Description
05/02/2012 NRC Review of Nuclear Energy Institute (NEI) Clean Plant Acceptance Criteria for Emergency Core Cooling Systems.
04/06/2010 Revised Guidance Regarding Coatings Zone of Influence For Review of Final Licensee Responses To Generic Letter 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents At Pressurized-Water Reactors."
03/28/2008

Revised Guidance for Review of Final Licensee Responses to Generic Letter 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors"

  • Enclosure 1: NRC Staff Review Guidance Regarding Generic Letter 2004-02 Closure in the Area of Strainer Head Loss and Vortexing


  • Enclosure 2: Coatings Evaluation Guidance For NRC Review of Generic Letter 2004-02 Supplemental Responses Prepared by the Office of Nuclear Reactor Regulation, Division of Component Integrity


  • Enclosure 3: Evaluation Guidance for the Review of GSI-191 Plant-Specific Chemical Effect Evaluations
11/21/2007 Revised Content Guide For Generic Letter 2004-02 Supplemental Responses
08/15/2007 Content Guide for Generic Letter 2004-02 Supplemental Responses
09/27/2007

Draft Guidance for Review of Final Licensee Responses to Generic Letter 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors"

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Page Last Reviewed/Updated Wednesday, May 08, 2013