NRC: Other Correspondence

This page lists, in reverse chronological order, various correspondence between external stakeholders and the NRC concerning the pressurized-water reactor sump performance issue (GSI-191).

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Incoming	Response	Description
02/04/08	none	Draft Conditions and Limitations for Use of Westinghouse Topical Report WCAP-16793-NP, Revision 0, "Evaluation of Long-Term Cooling Considering Particulate, Fibrous and Chemical Debris in the Recirculating Fluid
11/30/07	none	Letter from William H. Ruland, Director Division of Safety Systems, Subject:, NRC authorized licensees two additional months to complete and submit supplemental responses to GL 2004-02 that had been due 12/31/07.
02/28/06	11/14/06 03/06/06	Nuclear Regulatory Commission Request for Additional Information to Pressurized Water Reactor Licensees Regarding Responses to Generic Letter 2004-02.
03/31/06	01/16/06	Correspondence w/ NEI, Subject: Qualified Coatings Assessments
05/06/05	none	Advisory Committee on Reactor Safeguards, Subject: Comments on ANSI/ANS Standard 58.2- Design Basis for Protection of Light Water Nuclear Power Plants Against the Effects of Postulated Pipe Rupture Transmittal Letter Comments on GSI-191 Models for Debris Generation The ANSI/ANS Standard 58.2-1988: Two-Phase Jet Model Numerical Simulation of Jet Aerodynamics Using the Three-Dimensional Navier-Stokes Code PAB3D Safety Evaluation Appendix I ANSI/ANS JET MODEL
04/25/05	06/27/05	Characterization of Materials Associated with Integrated Chemical Effects Tests 1 and 2
10/18/04	11/26/04	Letter from Mario V. Bonaca, Advisory Committee on Reactor Safeguards, Subject: Safety Evaluation of the Industry Guidelines Related to Pressurized Water Reactor Sump Performance Transmittal Letter
07/19/04	none	Letter from Mario V. Bonaca, Advisory Committee on Reactor Safeguards, Subject: Proposed draft final generic letter on Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at PWRs Transmittal Letter
07/13/04	none	PWR Containment Sump Evaluation Methodology, Section 6; Revision Methodology Section 6
06/10/04	none	Letter from NEI Responding to Requests for Additional Informtion on PWR Sump Performance Evaluation Methodology Transmittal Letter Response Document
05/28/04	none	Letter from Nuclear Energy Institute Transmitting PWR Containment Sump Evaluation Methodology Transmittal Letter Methodology Main Body Methodology Appendix A Methodology Appendices B, C, D and E
03/18/04	none	Letter from M. V. Bonaca, Advisory Committee on Reactor Safeguards, Draft Final Revision 3 to Regulatory Guide 1.82, "Water Sources for Long-term Recirculation Cooling Following a Loss-of-Coolant Accident"
11/08/03	11/19/03	Letter from Senator Hillary Rodham Clinton, regarding the petition filed by the Union of Concerned Scientists and Riverkeeper, Inc., requesting the NRC take certain actions until the containment sumps at Indian Point Units 2 & 3 are modified to resolve issues identified in NRC Generic Safety Issue (GSI) 19, "Assessment of Debris Accumulation on PWR Sump Performance." Response from Chairman Nils J. Diaz.
11/12/03	11/19/03	Letter from Representative Nita M. Lowey, responding to a letter from Rep. Lowey to Dr. William D. Travers, Executive Director for Operations, expressing support for the immediate repair of the containment sumps at Indian Point Units 2 and 3. Response from Chairman Nils J. Diaz.
10/31/03	none	Letter from Nuclear Energy Institute Transmitting Draft PWR Containment Sump Evaluation Methodology
10/29/03	06/18/04 DD-04-02	Letter from Union of Concerned Scientists - Indian Point Energy Center - Supplement to Petition Pursuant to 10 CFR 2.206 - PWR Containment Sump Failure
10/15/03	none	Letter from Shaw Pitman LLP Regarding Riverkeeper and Union of Concerned Scientists 10 CFR 2.206 Petition re Indian Point Units Nos. 2 and 3 PWR Containment Failure
10/10/03	none	Letter from Nuclear Energy Institute Regarding Break Characteristics Model for Debris Generation Following a Design Basis Loss of Coolant Accident
09/08/03	10/22/03	Letter from Union of Concerned Scientists - Indian Point Energy Center - Petition Pursuant to 10 CFR 2.206 - PWR Containment Sump Failure
07/01/03	TBD	Letter from Union of Concerned Scientists - Regulatory Prudence and Bulletin 2003-01
07/01/03	07/17/03	Letter from the Union of Concerned Scientists concerning Bulletin 2003-01
09/30/02	none	Letter from Nuclear Energy Institute Transmitting Condition Assessment Guidelines: Debris Sources Inside PWR Containments, Revision 1