United States Nuclear Regulatory Commission - Protecting People and the Environment

Information Notices - 1990

File Name Date Description
in90068s1 04/14/1994 Stress Corrosion Cracking of Reactor Coolant Pump Bolts – Supplement 1
in90057s1 11/27/1991 Substandard, Refurbished Potter & Brumfield Relays Represented as New – Supplement 1
in90051s1 10/24/1991 Failures of Voltage-Dropping Resistors in the Power Supply Circuitry of Electric Governor Systems – Supplement 1
in90043s1 03/13/1991 Mechanical Interference with Thermal Trip Function in GE Molded-Case Circuit Breakers – Supplement 1
in90025s1 03/11/1991 Loss of Vital AC Power with Subsequent Reactor Coolant System Heat-Up – Supplement 1
in90077s1 02/04/1991 Inadvertent Removal of Fuel Assemblies from the Reactor Core – Supplement 1
in90082 12/31/1990 Requirements for Use of NRC-Approved Packages for Shipment of Type A Quantities of Radioactive Material
in90081 12/24/1990 Fitness for Duty
in90080 12/21/1990 Sand Intrusion Resulting in Two Diesel Generators Becoming Inoperable
in90079 12/20/1990 Failures of Main Steam Isolation Check Valves Resulting in Disc Separation
in90078 12/18/1990 Previously Unidentified Release Path from Boiling Water Reactor Control Rod Hydraulic Units
in90077 12/12/1990 Inadvertent Removal of Fuel Assemblies from the Reactor Core
in90076 12/07/1990 Failure of Turbine Overspeed Trip Mechanism Because of Inadequate Spring Tension
in90075 12/05/1990 Denial of Access to Current Low-Level Radioactive Waste Disposal Facilities
in90074 12/04/1990 Information on Precursors to Severe Accidents
in90073 11/29/1990 Corrosion of Valve-to-Torque Tube Keys in Spray Pond Cross Connect Valves
in90072 11/28/1990 Testing of Parallel Disc Gate Valves in Europe
in90071 11/06/1990 Effective Use of Radiation Safety Committees to Exercise Control over Medical Use Programs
in90038s1 11/06/1990 License and Fee Requirements for Processing Financial Assurance Submittals for Decommissioning – Supplement 1
in90070 11/06/1990 Pump Explosions Involving Ammonium Nitrate
in90069 10/31/1990 Adequacy of Emergency and Essential Lighting
in90068 10/30/1990 Stress Corrosion Cracking of Reactor Coolant Pump Bolts
in90067 10/29/1990 Potential Security Equipment Weaknesses
in90066 10/25/1990 Incomplete Draining and Drying of Shipping Casks
in90065 10/05/1990 Recent Orifice Plate Problems
in90064 10/04/1990 Potential for Common-Mode Failure of HPSI Pumps or Release of Reactor Coolant Outside Containment During a LOCA
in90063 10/03/1990 Management Attention to the Establishment and Maintenance of a Nuclear Criticality Safety Program
in90062 09/25/1990 Requirements for Import and Distribution of Neutron-Irradiated Gems
in90061 09/20/1990 Potential for Residual Heat Removal Pump Damage Caused by Parallel Pump Interaction
in90060 09/20/1990 Availability of Failure Data in the Government-Industry Data Exchange Program
in90059 09/17/1990 Errors in the Use of Radioactive Iodine-131
in90058 09/11/1990 Improper Handling of Ophthalmic Strontium-90 Beta Radiation Applicators
in90057 09/05/1990 Substandard, Refurbished Potter & Brumfield Relays Misrepresented as New
in90056 09/04/1990 Inadvertent Shipment of a Radioactive Source in a Container Thought to Be Empty
in90055 08/31/1990 Recent Operating Experience on Loss of Reactor Coolant Inventory While in a Shutdown Condition
in90054 08/28/1990 Summary of Requalification Program Deficiencies
in90053 08/16/1990 Potential Failures of Auxiliary Steam Piping and the Possible Effects on the Operability of Vital Equipment
in90052 08/14/1990 Retention of Broken Charpy Specimens
in90051 08/08/1990 Failures of Voltage-Dropping Resistors in the Power Supply Circuitry of Electric Governor Systems
in90050 08/08/1990 Minimization of Methane Gas in Plant Systems and Radwaste Shipping Containers
in90049 08/06/1990 Stress Corrosion Cracking in PWR Steam Generator Tubes
in90048 08/02/1990 Enforcement Policy for Hot Particle Exposures
in90047 07/27/1990 Unplanned Radiation Exposures to Personnel Extremities Due to Improper Handling of Potentially Highly Radioactive Source
in90046 07/16/1990 Criminal Prosecution of Wrongdoing Committed by Suppliers of Molded-Case Circuit Breakers and Related Components
in90045 07/06/1990 Overspeed of the Turbine-Driven Auxiliary Feedwater Pumps and Overpressurization of the Associated Piping System
in90044 06/29/1990 Dose-Rate Instruments Underresponding to the True Radiation Fields
in90043 06/29/1990 Mechanical Interference with Thermal Trip Function in GE Molded-Case Circuit Breakers
in90042 06/19/1990 Failure of Electrical Power Equipment Due to Solar Magnetic Disturbances
in90032s1 06/19/1990 Surface Crack and Subsurface Indications in the Weld of a Reactor Vessel Head – Supplement 1
in90041 06/12/1990 Potential Failure of General Electric Magne-Blast Circuit Breakers and AK Circuit Breakers
in90040 06/05/1990 Results of NRC-Sponsored Testing of Motor-Operated Valves
in90039 06/01/1990 Recent Problems with Service Water Systems
in90038 05/29/1990 Requirements for Processing Financial Assurance Submittals for Decommissioning
in90037 05/24/1990 Sheared Pinion Gear-to-Shaft Keys in Limitorque Motor Actuators
in90036 05/24/1990 Apparent Falsification of State of Connecticut Weight Certificates
in90035 05/24/1990 Transportation of Type A Quantities of Non-Fissile Radioactive Materials
in90034 05/10/1990 Response to False Siren Activations
in90033 05/09/1990 Sources of Unexpected Occupational Radiation Exposures at Spent Fuel Storage Pools
in90032 05/03/1990 Surface Crack and Subsurface Indications in the Weld of a Reactor Vessel Head
in90031 05/04/1990 Update on Waste Form and High Integrity Container ... Review Status, Identification of Problems with Cement Solidification ... Waste Mishaps
in90030 05/01/1990 Ultrasonic Inspection Techniques for Dissimilar Metal Welds
in90029 04/30/1990 Cracking of Cladding and its Heat-Affected Zone in the Base Metal of a Reactor Vessel Head
in90028 04/30/1990 Potential Error in High Steamline Flow Setpoint
in90027 04/30/1990 Clarification of ... Regulatory Requirements for Packaging of Uranium Hexafluoride (UF6) for Transportation
in90026 04/24/1990 Inadequate Flow of Essential Service Water to Room Coolers and Heat Exchangers for Engineered Safety-Feature Systems
in90025 04/16/1990 Loss of Vital AC Power with Subsequent Reactor Coolant System Heat-Up
in90024 04/10/1990 Transportation of Model SPEC 2-T Radiographic Exposure Device
in90023 04/04/1990 Improper Installation of Patel Conduit Seals
in90022 03/23/1990 Unanticipated Equipment Actuations Following Restoration of Power to Rosemount Transmitter Trip Units
in90020 03/22/1990 Personnel Injuries Resulting from Improper Operation of Radwaste Incinerators
in90021 03/22/1990 Potential Failure of Motor-Operated Butterfly Valves to Operate Because Valve Seat Friction Was Underestimated
in90019 03/14/1990 Potential Loss of Effective Volume for Containment Recirculation Spray at PWR Facilities
in90018 03/09/1990 Potential Problems with Crosby Safety Relief Valves Used on Diesel Generator Air Start Receiver Tanks
in90017 03/08/1990 Weight and Center of Gravity Discrepancies for Copes-Vulcan Valves
in90016 03/07/1990 Compliance with New Decommissioning Rule
in90015 03/07/1990 Reciprocity: Notification of Agreement State Radiation Control Directors Before Beginning Work in Agreement States
in90014 03/06/1990 Accidental Disposal of Radioactive Materials
in90013 03/05/1990 Importance of Review and Analysis of Safeguards Event Logs
in90012 02/28/1990 Monitoring or Interruption of Plant Communications
in90011 02/23/1990 Maintenance Deficiency Associated with Solenoid-Operated Valves
in90010 02/23/1990 Primary Water Stress Corrosion Cracking (PWSCC) of Inconel 600
in90009 02/05/1990 Extended Interim Storage of Low-Level Radioactive Waste by Fuel Cycle and Materials Licensees
in90008 02/01/1990 KR-85 Hazards from Decayed Fuel
in90007 01/30/1990 New Information Regarding Insulation Material Performance and Debris Blockage of PWR Containment Sumps
in90006 01/29/1990 Potential for Loss of Shutdown Cooling While at Low Reactor Coolant Levels
in90005 01/29/1990 Inter-System Discharge of Reactor Coolant
in90004 01/26/1990 Cracking of the Upper Shell-to-Transition Cone Girth Welds in Steam Generators
in90003 01/23/1990 Malfunction of Borg-Warner Bolted Bonnet Check Valves Caused by Failure of the Swing Arm
in90002 01/22/1990 Potential Degradation of Secondary Containment
in90001 01/12/1990 Importance of Proper Response to Self-Identified Violations by Licensees
Page Last Reviewed/Updated Tuesday, November 12, 2013