Information Notices - 1991
| File Name | Date | Description |
|---|---|---|
| in91050s1 | 07/17/1997 | Water Hammer Events Since 1991 |
| in91085r1 | 02/27/1997 | Potential Failures of Thermostatic Control Valves for Diesel Generator Jacket Cooling Water |
| in91029s3 | 11/22/1995 | Deficiencies Identified During Electrical Distribution System Functional Inspections |
| in91029s2 | 12/22/1993 | Potential Deficiencies Found During Electrical Distribution System Functional Inspections |
| in91079s1 | 08/04/1994 | Deficiencies Found in Thermo-Lag Fire Barrier Installation |
| in91045s1 | 07/29/1994 | Possible Malfunction of Westinghouse ARD, BFD, and NBFD Relays, and A200 DC and DPC 250 Magnetic Contactors |
| in91081s1 | 05/19/1994 | Switchyard Problems that Contribute to Loss of Offsite Power |
| in91021s1 | 12/07/1993 | Inadequate Quality Assurance Program of Vendor Supplying Safety-Related Equipment |
| in91064s1 | 10/07/1992 | Site Area Emergency Resulting from a Loss of Non-Class 1E Uninterruptable Power Supplies |
| in91029s1 | 09/14/1992 | Deficiencies Identified During Electrical Distribution System Functional Inspections |
| in91052s1 | 07/16/1992 | Nonconservative Errors in Overtemperature Delta-Temperature (OTdT) Setpoint Caused by Improper Gain Setting |
| in91087 | 12/27/1991 | Hydrogen Embrittlement of Raychem Cryofit Couplings |
| in91086 | 12/27/1991 | New Reporting Requirements for Contamination Events at Medical Facilities (10 CFR 30.50) |
| in91085 | 12/26/1991 | Potential Failures of Thermostatic Control Valves for Diesel Generator Jacket Cooling Water |
| in91084 | 12/26/1991 | Problems with Criticality Alarm Components/Systems |
| in91083 | 12/20/1991 | Solenoid-Operated Valve Failures Resulted in Turbine Overspeed |
| in91018s1 | 12/18/1991 | High-Energy Piping Failures Caused by Wall Thinning |
| in91082 | 12/18/1991 | Problems with Diaphragms in Safety-Related Tanks |
| in91081 | 12/16/1991 | Switchyard Problems that Contribute to Loss of Offsite Power |
| in91080 | 12/11/1991 | Failure of Anchor Head Threads on Post-Tensioning System During Surveillance Inspection |
| in91079 | 12/06/1991 | Deficiencies in the Procedures for Installing Thermo-Lag Fire Barrier Materials |
| in91078 | 11/28/1991 | Status Indication of Control Power for Circuit Breakers Used in Safety-Related Applications |
| in91077 | 11/26/1991 | Shift Staffing at Nuclear Power Plants |
| in91076 | 11/26/1991 | 10 CFR Parts 21 and 50.55(e) Final Rules |
| in91075 | 11/25/1991 | Static Head Corrections Mistakenly Not Included in Pressure Transmitter Calibration Procedures |
| in91074 | 11/25/1991 | Changes in Pressurizer Safety Valve Setpoints Before Installation |
| in91073 | 11/21/1991 | Loss of Shutdown Cooling During Disassembly of High Pressure Safety Injection System Check Valve |
| in91072 | 11/19/1991 | Issuance of a Revision to the EPA Manual of Protective Action Guides and Protective Actions for Nuclear Incidents |
| in91071 | 11/12/1991 | Training and Supervision of Individuals Supervised by an Authorized User |
| in91070 | 11/04/1991 | Improper Installation of Instrumentation Modules |
| in91069 | 11/01/1991 | Errors in Main Steam Line Break Analyses for Determining Containment Parameters |
| in91068 | 10/28/1991 | Careful Planning Significantly Reduces the Potential Adverse Impacts of Loss of Offsite Power Events During Shutdown |
| in91067 | 10/21/1991 | Problems with the Reliable Detection of Intergranular Attack (IGA) of Steam Generator Tubing |
| in91066 | 10/18/1991 | (1) Erroneous Data in ... NUREG/CR-0095 and (2) Thermal Scattering Data Limitation ... KENO and SCALE Codes |
| in91065 | 10/16/1991 | Emergency Access to Low-Level Radioactive Waste Disposal Facilities |
| in91064 | 10/09/1991 | Site Area Emergency Resulting from a Loss of Non-Class 1E Uninterruptible Power Supplies |
| in91063 | 10/03/1991 | Natural Gas Hazards at Fort St. Vrain Nuclear Generating Station |
| in91062 | 09/30/1991 | Diesel Engine Damage Caused by Hydraulic Lockup Resulting from Fluid Leakage into Cylinders |
| in91061 | 09/30/1991 | Preliminary Results of Validation Testing of Motor-Operated Valve Diagnostic Equipment |
| in91060 | 09/24/1991 | False Alarms of Alarm Ratemeters Because of Radiofrequency Interference |
| in91059 | 09/23/1991 | Problems with Access Authorization Programs |
| in91058 | 09/20/1991 | Dependency of Offset Disc Butterfly Valve's Operation on Orientation with Respect to Flow |
| in91057 | 09/19/1991 | Operational Experience on Bus Transfers |
| in91056 | 09/19/1991 | Potential Radioactive Leakage to Tank Vented to Atmosphere |
| in91055 | 09/16/1991 | Failures Caused by an Improperly Adjusted Test Link in 4.16 KV General Electric Switchgear |
| in91054 | 09/06/1991 | Foreign Experience Regarding Boron Dilution |
| in91053 | 09/04/1991 | Failure of Remote Shutdown System Instrumentation Because of Incorrectly Installed Components |
| in91052 | 08/29/1991 | Nonconservative Errors in Overtemperature Delta-Temperature (OTdT) Setpoint Caused by Improper Gain Settings |
| in91051 | 08/20/1991 | Inadequate Fuse Control Programs |
| in91050 | 08/20/1991 | A Review of Water Hammer Events After 1985 |
| in91049 | 08/15/1991 | Enforcement of Safety Requirements for Radiographers |
| in91048 | 08/09/1991 | False Certificates of Conformance Provided by Westinghouse Electric Supply Company for Commercial-Grade Circuit Breakers |
| in91047 | 08/06/1991 | Failure of Thermo-Lag Fire Barrier Material to Pass Fire Endurance Test |
| in91046 | 07/18/1991 | Degradation of Emergency Diesel Generator Fuel Oil Delivery Systems |
| in91043 | 07/05/1991 | Recent Incidents Involving Rapid Increases in Primary-to-Secondary Leak Rate |
| in91044 | 07/08/1991 | Improper Control of Chemicals in Nuclear Fuel Fabrication |
| in91045 | 07/05/1991 | Possible Malfunction of Westinghouse ARD, BFD, and NBFD Relays, and A200 DC and DPC 250 Magnetic Contactors |
| in91042 | 06/27/1991 | Plant Outage Events Involving Poor Coordination Between Operations and Maintenance Personnel During Valve Testing and Manipulations |
| in91041 | 06/27/1991 | Potential Problems with the Use of Freeze Seals |
| in91040 | 06/19/1991 | Contamination of Nonradioactive System and Resulting Possibility for Unmonitored, Uncontrolled Release to Environment |
| in91039 | 06/17/1991 | Compliance with 10 CFR Part 21, "Reporting of Defects and Noncompliance" |
| in91038 | 06/13/1991 | Thermal Stratification in Feedwater System Piping |
| in91037 | 06/10/1991 | Compressed Gas Cylinder Missile Hazards |
| in91036 | 06/10/1991 | Nuclear Plant Staff Working Hours |
| in91035 | 06/07/1991 | Labeling Requirements for Transporting Multi-Hazard Radioactive Materials |
| in91034 | 06/03/1991 | Potential Problems in Identifying Causes of Emergency Diesel Generator Malfunctions |
| in91033 | 05/31/1991 | Reactor Safety Information for States During Exercises and Emergencies |
| in91032 | 05/15/1991 | Possible Flaws in Certain Piping Systems Fabricated by Associated Piping and Engineering |
| in91031 | 05/09/1991 | Nonconforming Magnaflux Magnetic Particle (14AM) Prepared Bath |
| in91030 | 04/23/1991 | Inadequate Calibration of TLDs Utilized to Monitor Extremity Dose at Uranium Processing and Fabrication Facilities |
| in91029 | 04/15/1991 | Deficiencies Identified During Electrical Distribution System Functional Inspections |
| in91028 | 04/15/1991 | Cracking in Feedwater System Piping |
| in91027 | 04/10/1991 | Incorrect Rotation of Positive Displacement Pump |
| in91026 | 04/02/1991 | Potential Nonconservative Errors ... Working Format Hansen-Roach Cross-Section Set Provided with the KENO and SCALE Codes |
| in91025 | 04/01/1991 | Commercial-Grade Structural Framing Components Supplied as Nuclear Safety-Related Equipment |
| in91024 | 03/26/1991 | Recent Operating Experience Involving Reactor Operation Without a Licensed RO or SRO Present in the Control Room |
| in91023 | 03/26/1991 | Accidental Radiation Overexposures to Personnel Due to Industrial Radiography Accessory Equipment Malfunctions |
| in91022 | 03/19/1991 | Four Plant Outage Events Involving Loss of AC Power or Coolant Spills |
| in91021 | 03/19/1991 | Inadequate Quality Assurance Program of Vendor Supplying Safety-Related Equipment |
| in91021 | 03/19/1991 | Inadequate Quality Assurance Program of Vendor Supplying Safety-Related Equipment |
| in91020 | 03/19/1991 | Electrical Wire Insulation Degradation Caused Failure in a Safety-Related Motor Control Center |
| in91021 | 03/19/1991 | Inadequate Quality Assurance Program of Vendor Supplying Safety-Related Equipment |
| in91019 | 03/12/1991 | Steam Generator Feedwater Distribution Piping Damage |
| in91018 | 03/12/1991 | High-Energy Piping Failures Caused by Wall Thinning |
| in91017 | 03/11/1991 | Fire Safety of Temporary Installations or Services |
| in91016 | 03/06/1991 | Unmonitored Release Pathways from Slightly Contaminated Recycle and Recirculation Water Systems at a Fuel Facility |
| in91015 | 03/06/1991 | Incorrect Configuration of Breaker Operating Springs in General Electric AK-Series Metal-Clad Circuit Breakers |
| in91014 | 03/05/1991 | Recent Safety-Related Incidents at Large Irradiators |
| in91013 | 03/04/1991 | Inadequate Testing of Emergency Diesel Generators (EDGs) |
| in91011 | 02/20/1991 | Inadequate Physical Separation and Electrical Isolation of Non-Safety-Related Circuits From RPS Circuits |
| in91012 | 02/15/1991 | Potential Loss of Net Positive Suction Head (NPSH) of Standby Liquid Control System Pumps |
| in91010 | 02/12/1991 | Summary of Semiannual Program Performance Reports on Fitness-for-Duty (FFD) in the Nuclear Industry |
| in91009, rev. 1 | 09/25/2007 | Counterfeiting of Crane Valves |
| in91009 | 02/05/1991 | See in91009, rev 1 |
| in91008 | 02/05/1991 | Medical Examination for Licensed Operators |
| in91007 | 02/04/1991 | Maintenance Deficiency Associated with General Electric Horizontal Custom 8000 Induction Motors |
| in91006 | 01/31/1991 | Lock-Up of Emergency Diesel Generator and Load Sequencer Control Circuits Preventing Restart of Tripped EDG |
| in91005 | 01/30/1991 | Intergranular Stress Corrosion Cracking in Pressurized Water Reactor Safety Injection Accumulator Nozzles |
| in91004 | 01/28/1991 | Reactor Scram Following Control Rod Withdrawal Associated with Low Power Turbine Testing |
| in91003 | 01/07/1991 | Management of Wastes Contaminated with Radioactive Materials ("Red Bag" Waste and Ordinary Trash) |
| in91002 | 01/07/1991 | Brachytherapy Source Management |
| in91001 | 01/04/1991 | Supplier of Misrepresented Resistors |
Page Last Reviewed/Updated Thursday, March 29, 2012
