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Information Notices - 1991
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| Document Number | Title | Revision | Publish Date | Reviewed Date |
|---|---|---|---|---|
| IN-91-87 | Hydrogen Embrittlement of Raychem Cryofit Couplings | -- | 12/27/1991 | -- |
| IN-91-86 | New Reporting Requirements for Contamination Events at Medical Facilities (10 CFR 30.50) | -- | 12/27/1991 | -- |
| IN-91-85 | Potential Failures of Thermostatic Control Valves for Diesel Generator Jacket Cooling Water | 1 | 02/27/1997 | -- |
| -- | 12/26/1991 | -- | ||
| IN-91-84 | Problems with Criticality Alarm Components/Systems | -- | 12/26/1991 | -- |
| IN-91-83 | Solenoid-Operated Valve Failures Resulted in Turbine Overspeed | -- | 12/20/1991 | -- |
| IN-91-82 | Problems with Diaphragms in Safety-Related Tanks | -- | 12/18/1991 | -- |
| IN-91-81 | Switchyard Problems that Contribute to Loss of Offsite Power | S1 | 05/19/1994 | -- |
| -- | 12/16/1991 | -- | ||
| IN-91-80 | Failure of Anchor Head Threads on Post-Tensioning System During Surveillance Inspection | -- | 12/11/1991 | -- |
| IN-91-79 | Deficiencies in the Procedures for Installing Thermo-Lag Fire Barrier Materials | S1 | 08/04/1994 | -- |
| -- | 12/06/1991 | -- | ||
| IN-91-78 | Status Indication of Control Power for Circuit Breakers Used in Safety-Related Applications | -- | 11/28/1991 | -- |
| IN-91-77 | Shift Staffing at Nuclear Power Plants | -- | 11/26/1991 | -- |
| IN-91-76 | 10 CFR Parts 21 and 50.55(e) Final Rules | -- | 11/26/1991 | -- |
| IN-91-75 | Static Head Corrections Mistakenly Not Included in Pressure Transmitter Calibration Procedures | -- | 11/25/1991 | -- |
| IN-91-74 | Changes in Pressurizer Safety Valve Setpoints Before Installation | -- | 11/25/1991 | -- |
| IN-91-73 | Loss of Shutdown Cooling During Disassembly of High Pressure Safety Injection System Check Valve | -- | 11/21/1991 | -- |
| IN-91-72 | Issuance of a Revision to the EPA Manual of Protective Action Guides and Protective Actions for Nuclear Incidents | -- | 11/19/1991 | -- |
| IN-91-71 | Training and Supervision of Individuals Supervised by an Authorized User | -- | 11/12/1991 | -- |
| IN-91-70 | Improper Installation of Instrumentation Modules | -- | 11/04/1991 | -- |
| IN-91-69 | Errors in Main Steam Line Break Analyses for Determining Containment Parameters | -- | 11/01/1991 | -- |
| IN-91-68 | Careful Planning Significantly Reduces the Potential Adverse Impacts of Loss of Offsite Power Events During Shutdown | -- | 10/28/1991 | -- |
| IN-91-67 | Problems with the Reliable Detection of Intergranular Attack (IGA) of Steam Generator Tubing | -- | 10/21/1991 | -- |
| IN-91-66 | (1) Erroneous Data in ... NUREG/CR-0095 and (2) Thermal Scattering Data Limitation ... KENO and SCALE Codes | -- | 10/18/1991 | -- |
| IN-91-65 | Emergency Access to Low-Level Radioactive Waste Disposal Facilities | -- | 10/16/1991 | -- |
| IN-91-64 | Site Area Emergency Resulting from a Loss of Non-Class 1E Uninterruptable Power Supplies | S1 | 10/07/1992 | -- |
| -- | 10/09/1991 | -- | ||
| IN-91-63 | Natural Gas Hazards at Fort St. Vrain Nuclear Generating Station | -- | 10/03/1991 | -- |
| IN-91-62 | Diesel Engine Damage Caused by Hydraulic Lockup Resulting from Fluid Leakage into Cylinders | -- | 09/30/1991 | -- |
| IN-91-61 | Preliminary Results of Validation Testing of Motor-Operated Valve Diagnostic Equipment | -- | 09/30/1991 | -- |
| IN-91-60 | False Alarms of Alarm Ratemeters Because of Radiofrequency Interference | -- | 09/24/1991 | -- |
| IN-91-59 | Problems with Access Authorization Programs | -- | 09/23/1991 | -- |
| IN-91-58 | Dependency of Offset Disc Butterfly Valve's Operation on Orientation with Respect to Flow | -- | 09/20/1991 | -- |
| IN-91-57 | Operational Experience on Bus Transfers | -- | 09/19/1991 | -- |
| IN-91-56 | Potential Radioactive Leakage to Tank Vented to Atmosphere | -- | 09/19/1991 | -- |
| IN-91-55 | Failures Caused by an Improperly Adjusted Test Link in 4.16 KV General Electric Switchgear | -- | 09/16/1991 | -- |
| IN-91-54 | Foreign Experience Regarding Boron Dilution | -- | 09/06/1991 | -- |
| IN-91-53 | Failure of Remote Shutdown System Instrumentation Because of Incorrectly Installed Components | -- | 09/04/1991 | -- |
| IN-91-52 | Nonconservative Errors in Overtemperature Delta-Temperature (OTdT) Setpoint Caused by Improper Gain Setting | S1 | 07/16/1992 | -- |
| -- | 08/29/1991 | -- | ||
| IN-91-51 | Inadequate Fuse Control Programs | -- | 08/20/1991 | -- |
| IN-91-50 | A Review of Water Hammer Events After 1985 | S1 | 07/17/1997 | -- |
| -- | 08/20/1991 | -- | ||
| IN-91-49 | Enforcement of Safety Requirements for Radiographers | -- | 08/15/1991 | -- |
| IN-91-48 | False Certificates of Conformance Provided by Westinghouse Electric Supply Company for Commercial-Grade Circuit Breakers | -- | 08/09/1991 | -- |
| IN-91-47 | Failure of Thermo-Lag Fire Barrier Material to Pass Fire Endurance Test | -- | 08/06/1991 | -- |
| IN-91-46 | Degradation of Emergency Diesel Generator Fuel Oil Delivery Systems | -- | 07/18/1991 | -- |
| IN-91-45 | Possible Malfunction of Westinghouse ARD, BFD, and NBFD Relays, and A200 DC and DPC 250 Magnetic Contactors | S1 | 07/29/1994 | -- |
| -- | 07/05/1991 | -- | ||
| IN-91-44 | Improper Control of Chemicals in Nuclear Fuel Fabrication | -- | 07/08/1991 | -- |
| IN-91-43 | Recent Incidents Involving Rapid Increases in Primary-to-Secondary Leak Rate | -- | 07/05/1991 | -- |
| IN-91-42 | Plant Outage Events Involving Poor Coordination Between Operations and Maintenance Personnel During Valve Testing and Manipulations | -- | 06/27/1991 | -- |
| IN-91-41 | Potential Problems with the Use of Freeze Seals | -- | 06/27/1991 | -- |
| IN-91-40 | Contamination of Nonradioactive System and Resulting Possibility for Unmonitored, Uncontrolled Release to Environment | -- | 06/19/1991 | -- |
| IN-91-39 | Compliance with 10 CFR Part 21, "Reporting of Defects and Noncompliance" | -- | 06/17/1991 | -- |
| IN-91-38 | Thermal Stratification in Feedwater System Piping | -- | 06/13/1991 | -- |
| IN-91-37 | Compressed Gas Cylinder Missile Hazards | -- | 06/10/1991 | -- |
| IN-91-36 | Nuclear Plant Staff Working Hours | -- | 06/10/1991 | -- |
| IN-91-35 | Labeling Requirements for Transporting Multi-Hazard Radioactive Materials | -- | 06/07/1991 | -- |
| IN-91-34 | Potential Problems in Identifying Causes of Emergency Diesel Generator Malfunctions | -- | 06/03/1991 | -- |
| IN-91-33 | Reactor Safety Information for States During Exercises and Emergencies | -- | 05/31/1991 | -- |
| IN-91-32 | Possible Flaws in Certain Piping Systems Fabricated by Associated Piping and Engineering | -- | 05/15/1991 | -- |
| IN-91-31 | Nonconforming Magnaflux Magnetic Particle (14AM) Prepared Bath | -- | 05/09/1991 | -- |
| IN-91-30 | Inadequate Calibration of TLDs Utilized to Monitor Extremity Dose at Uranium Processing and Fabrication Facilities | -- | 04/23/1991 | -- |
| IN-91-29 | Deficiencies Identified During Electrical Distribution System Functional Inspections | S3 | 11/22/1995 | -- |
| S2 | 12/22/1993 | -- | ||
| S1 | 09/14/1992 | -- | ||
| -- | 04/15/1991 | -- | ||
| IN-91-28 | Cracking in Feedwater System Piping | -- | 04/15/1991 | -- |
| IN-91-27 | Incorrect Rotation of Positive Displacement Pump | -- | 04/10/1991 | -- |
| IN-91-26 | Potential Nonconservative Errors ... Working Format Hansen-Roach Cross-Section Set Provided with the KENO and SCALE Codes | -- | 04/02/1991 | -- |
| IN-91-25 | Commercial-Grade Structural Framing Components Supplied as Nuclear Safety-Related Equipment | -- | 04/01/1991 | -- |
| IN-91-24 | Recent Operating Experience Involving Reactor Operation Without a Licensed RO or SRO Present in the Control Room | -- | 03/26/1991 | -- |
| IN-91-23 | Accidental Radiation Overexposures to Personnel Due to Industrial Radiography Accessory Equipment Malfunctions | -- | 03/26/1991 | -- |
| IN-91-22 | Four Plant Outage Events Involving Loss of AC Power or Coolant Spills | -- | 03/19/1991 | -- |
| IN-91-21 | Inadequate Quality Assurance Program of Vendor Supplying Safety-Related Equipment | S1 | 12/07/1993 | -- |
| -- | 03/19/1991 | -- | ||
| IN-91-20 | Electrical Wire Insulation Degradation Caused Failure in a Safety-Related Motor Control Center | -- | 03/19/1991 | -- |
| IN-91-19 | Steam Generator Feedwater Distribution Piping Damage | -- | 03/12/1991 A 03/12/1991 B | -- |
| IN-91-18 | High-Energy Piping Failures Caused by Wall Thinning | S1 | 12/18/1991 | -- |
| -- | 03/12/1991 | -- | ||
| IN-91-17 | Fire Safety of Temporary Installations or Services | -- | 03/11/1991 | -- |
| IN-91-16 | Unmonitored Release Pathways from Slightly Contaminated Recycle and Recirculation Water Systems at a Fuel Facility | -- | 03/06/1991 | -- |
| IN-91-15 | Incorrect Configuration of Breaker Operating Springs in General Electric AK-Series Metal-Clad Circuit Breakers | -- | 03/06/1991 | -- |
| IN-91-14 | Recent Safety-Related Incidents at Large Irradiators | -- | 03/05/1991 | -- |
| IN-91-13 | Inadequate Testing of Emergency Diesel Generators (EDGs) | -- | 03/04/1991 | -- |
| IN-91-12 | Potential Loss of Net Positive Suction Head (NPSH) of Standby Liquid Control System Pumps | -- | 02/15/1991 | -- |
| IN-91-11 | Inadequate Physical Separation and Electrical Isolation of Non-Safety-Related Circuits From RPS Circuits | -- | 02/20/1991 | -- |
| IN-91-10 | Summary of Semiannual Program Performance Reports on Fitness-for-Duty (FFD) in the Nuclear Industry | -- | 02/12/1991 | -- |
| IN-91-09 | Counterfeiting of Crane Valves | 1 | 09/25/2007 | -- |
| -- | 02/05/1991 | -- | ||
| IN-91-08 | Medical Examination for Licensed Operators | -- | 02/05/1991 | -- |
| IN-91-07 | Maintenance Deficiency Associated with General Electric Horizontal Custom 8000 Induction Motors | -- | 02/04/1991 | -- |
| IN-91-06 | Lock-Up of Emergency Diesel Generator and Load Sequencer Control Circuits Preventing Restart of Tripped EDG | -- | 01/31/1991 | -- |
| IN-91-05 | Intergranular Stress Corrosion Cracking in Pressurized Water Reactor Safety Injection Accumulator Nozzles | -- | 01/30/1991 | -- |
| IN-91-04 | Reactor Scram Following Control Rod Withdrawal Associated with Low Power Turbine Testing | -- | 01/28/1991 | -- |
| IN-91-03 | Management of Wastes Contaminated with Radioactive Materials ("Red Bag" Waste and Ordinary Trash) | -- | 01/07/1991 | -- |
| IN-91-02 | Brachytherapy Source Management | -- | 01/07/1991 | -- |
| IN-91-01 | Supplier of Misrepresented Resistors | -- | 01/04/1991 | -- |
Page Last Reviewed/Updated Wednesday, March 12, 2025
Page Last Reviewed/Updated Wednesday, March 12, 2025