This page lists regulatory references concerning the pressurized-water reactor sump performance issue (GSI-191) and boiling-water reactor suction strainer performance.

On this page:

Inspection Guidance
Bulletins
Generic Letters
Information Notices

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Inspection Guidance

Document Number	Description
TI 2515/153	Reactor Containment Sump Blockage
TI 2515/166, Rev. 1	Pressurized Water Reactor Containment Sump Blockage (NRC Generic Letter 2004-02)

Bulletins

Document Number	Description
Bulletin 03-01	Potential Impact of Debris Blockage on Emergency Sump Recirculation at Pressurized-Water Reactors, June 9, 2003
Bulletin 96-03	Potential Plugging of Emergency Core Cooling Suction Strainers by Debris in Boiling-Water Reactors, May 6, 1996
Bulletin 95-02	Unexpected Clogging of a Residual Heat Removal (RHR) Pump Strainer While Operating in the Suppression Pool Cooling Mode, October 17, 1995
Bulletin 93-02	Debris Plugging of Emergency Core Cooling Suction Strainers, May 11, 1993
Bulletin 93-02, Supp. 1	Debris Plugging of Emergency Core Cooling Suction Strainers, February 18, 1994

Generic Letters

GL 04-02	Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors Regulatory Analysis for Generic Letter 2004-02 Risk and Cost-Benefit Consideration Associated with GSI-191
Draft GL 04-XX	Proposed Generic Letter, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors, issued for public comments in the Federal Register. Comment period is now closed. Federal Register Notice Public Comments: Union of Concerned Scientists Nuclear Energy Institute Progress Energy, Inc. Tennessee Valley Authority Westinghouse Owners Group Nuclear Utility Backfitting and Reform Group Westinghouse Florida Power & Light
GL 98-04	Potential for Degradation of the Emergency Core Cooling System and the Containment Spray System After a Loss-of-Coolant Accident Because of Construction and Protective Coating Deficiencies and Foreign Material in Containment, July 14, 1998
GL 97-04	"Assurance of Sufficient Net Positive Suction Head for Emergency Core Cooling and Containment Heat Removal Pumps," October 7, 1997
GL 85-22	Potential for Loss of Post-LOCA Recirculation Capability Due to Insulation Debris Blockage, December 3, 1985

Information Notices

IN 05-26	Results of Chemical Effects Head Loss Tests in a Simulated PWR Sump Pool Environment Chemical Effects/Head Loss Testing, Test 1 and 2 Supplement 1 - Additional Results of Chemical Effects Tests in a Simulated PWR Sump Pool Environment Chemical Effects/Head-Loss Testing Quick Look Report
IN 97-13	Deficient Conditions Associated With Protective Coatings at Nuclear Power Plants, March 24, 1997
IN 96-59	Potential Degradation of Post Loss-of-Coolant Recirculation Capability as a Result of Debris, October 30, 1996
IN 96-55	Inadequate Net Positive Suction Head of Emergency Core Cooling and Containment Heat Removal Pumps Under Design Basis Accident Conditions, October 22, 1996
IN 96-27	Potential Clogging of High-Pressure Safety Injection Throttle Valves During Recirculation, May 1, 1996
IN 96-10	Potential Blockage by Debris of Safety System Piping Which Is Not Used During Normal Operation or Tested During Surveillances, February 13, 1996
IN 95-47	Unexpected Opening of a Safety/Relief Valve and Complications Involving Suppression Pool Cooling Strainer Blockage, October 4, 1995
IN 95-47, Rev. 1	Unexpected Opening of a Safety/Relief Valve and Complications Involving Suppression Pool Cooling Strainer Blockage, November 30, 1995
IN 95-06	Potential Blockage of Safety-Related Strainers by Material Brought Inside Containment, January 25, 1995
IN 94-57	Debris in Containment and the Residual Heat Removal System, August 12, 1994
IN 93-34	Potential for Loss of Emergency Cooling Function Due to a Combination of Operational and Post-LOCA Debris in Containment, April 26, 1993
IN 93-34, Supp. 1	Potential for Loss of Emergency Cooling Function Due to a Combination of Operational and Post-LOCA Debris in Containment, May 6, 1993
IN 92-85	Potential Failures of Emergency Core Cooling Systems Caused by Foreign Material Blockage,” December 23, 1992
IN 92-71	Partial Plugging of Suppression Pool Strainers at a Foreign BWR, September 30, 199
IN 89-79	Degraded Coatings and Corrosion of Steel Containment Vessels, December 1, 198
IN 89-79, Supp. 1	Degraded Coatings and Corrosion of Steel Containment Vessels, June 29, 199
IN 89-77	Debris in Containment Emergency Sumps and Incorrect Screen Configurations, November 21, 1989
IN 88-28	Potential for Loss of Post-LOCA Recirculation Capability Due to Insulation Debris Blockage, May 19, 1988