| File Name |
Date |
Description |
| in93100 |
12/22/1993 |
Reporting Requirements for Bankruptcy |
| in93099 |
12/21/1993 |
Undervoltage Relay and Thermal Overload Setpoint Problems |
| in93098 |
12/20/1993 |
Motor Brakes on Valve Actuator Motors |
| in93097 |
12/17/1993 |
Failures of Yokes Installed on Walworth Gate and Globe Valves |
| in93101 |
12/17/1993 |
Jet Pump Hold-Down Beam Failure |
| in93096 |
12/14/1993 |
Improper Reset Causes Emergency Diesel Generator Failures |
| in93095 |
12/13/1993 |
Storm-Related Loss of Offsite Power Events Due to Salt Buildup on Switchyard
Insulators |
| in93094 |
12/09/1993 |
Unauthorized Forced Entry Into the Protected Area At Three Mile Island
Unit 1 on February 7, 1993 |
| in93093 |
12/08/1993 |
Inadequate Control of Reactor Coolant System Conditions During Shutdown |
| in93092 |
12/07/1993 |
Plant Improvements to Mitigate Common Dependencies in Component Cooling
Water Systems |
| in93091 |
12/03/1993 |
Misadjustment Between General Electric 4.16-KV Circuit Breakers and Their
Associated Cubicles |
| in93090 |
12/01/1993 |
Unisolatable Reactor Coolant System Leak Following Repeated Applications
of Leak Sealant |
| in93088 |
11/30/1993 |
Status of Motor-Operated Valve Performance Prediction Program by the Electric
Power Research Institute |
| in93089 |
11/26/1993 |
Potential Problems With BWR Level Instrumentation Backfill Modifications |
| in93087 |
11/04/1993 |
Fuse Problems With Westinghouse 7300 Printed Circuit Cards |
| in93086 |
10/29/1993 |
Identification of Isotopes in the Production and Shipment of Byproduct
Material at Non-Power Reactors |
| in93085r1 |
01/20/1994 |
Problems With X-Relays in DB- and DHB-Type Circuit Breakers Manufactured
By Westinghouse |
| in93085 |
10/20/1993 |
Problems With X-Relays in DB- and DHB-Type Circuit Breakers Manufactured
By Westinghouse |
| in93084 |
10/20/1993 |
Determination of Westinghouse Reactor Coolant Pump Seal Failure |
| in93060s1 |
10/20/1994 |
Reporting Fuel Cycle and Materials Events to the NRC Operations Center |
| in93081 |
10/12/1993 |
Implementation of Engineering Expertise on Shift |
| in93082 |
10/12/1993 |
Recent Fuel and Core Performance Problems in Operating Reactors |
| in93080 |
10/08/1993 |
Implementation of the Revised 10 CFR Part 20 |
| in93083 |
10/07/1993 |
Potential Loss of Spent Fuel Pool Cooling Following a Loss of Coolant
Accident (LOCA) |
| in93077 |
10/04/1993 |
Human Errors That Result in Inadvertent Transfers of Special Nuclear Material
at Fuel Cycle Facilities |
| in93078 |
10/04/1993 |
Inoperable Safety Systems at a Non-Power Reactor |
| in93079 |
09/30/1993 |
Core Shroud Cracking at Beltline Region Welds in Boiling-Water Reactors |
| in93076 |
09/21/1993 |
Inadequate Control of Paint and Cleaners For Safety-Related Equipment |
| in93075 |
09/17/1993 |
Spurious Tripping of Low-Voltage Power Circuit Breakers With GE RMS-9
Digital Trip Units |
| in93074 |
09/16/1993 |
High Temperatures Reduce Limitorque AC Motor Operator Torque |
| in93073 |
09/15/1993 |
Criminal Prosecution of Nuclear Suppliers For Wrongdoing |
| in93072 |
09/14/1993 |
Observations From Recent Shutdown Risk and Outage Management Pilot Team
Inspections |
| in93071 |
09/13/1993 |
Fire At Chernobyl Unit 2 |
| in93070 |
09/10/1993 |
Degradation of Boraflex Neutron Absorber Coupons |
| in93069 |
09/02/1993 |
Radiographic Events At Operating Power Reactors |
| in93068 |
09/01/1993 |
Failure of Pump Shaft Coupling Caused By Temper Embrittlement During Manufacture |
| in93083s1 |
08/24/1995 |
Potential Loss of Spent Fuel Pool Cooling Following a Loss of Coolant
Accident |
| in93067 |
08/16/1993 |
Bursting of High Pressure Coolant Injection Steam Line Rupture Discs Injures
Plant Personnel |
| in93066 |
08/16/1993 |
Switchover to Hot-Leg Injection Following a Loss-Of-Coolant Accident in
Pressurized Water Reactors |
| in93065 |
08/13/1993 |
Reactor Trips Caused By Breaker Testing With Fault Protection Bypassed |
| in93064 |
08/12/1993 |
Periodic Testing and Preventative Maintenance of Molded Case Circuit Breakers |
| in93063 |
08/11/1993 |
Improper Use of Soluble Weld Purge Dam Material |
| in93062 |
08/10/1993 |
Thermal Stratification of Water in BWR Reactor Vessels |
| in93061 |
08/09/1993 |
Excessive Reactor Coolant Leakage Following a Seal Failure in a Reactor
Coolant Pump or Reactor Recirculation Pump |
| in93060 |
08/04/1993 |
Reporting Fuel Cycle and Materials Events to the NRC Operations Center |
| in93059 |
07/26/1993 |
Unexpected Opening of Both Doors in an Airlock |
| in93058 |
07/26/1993 |
Nonconservatism in Low-Temperature Overpressure Protection For Pressurized-Water
Reactors |
| in93057 |
07/23/1993 |
Software Problems Involving Digital Control Console Systems at Non-Nuclear
Reactors |
| in93056 |
07/22/1993 |
Weakness in Emergency Operating Procedures Found as Result of Steam Generator
Tube Rupture |
| in93055 |
07/21/1993 |
Potential Problem With Main Steamline Break Analysis for Main Steam Vaults/Tunnels |
| in93054 |
07/20/1993 |
Motor-Operated Valve Actuator Thrust Variations Measured With a Torque
Thrust Cell and a Strain Gage |
| in93053 |
07/20/1993 |
Effect of Hurricane Andrew on Turkey Point Nuclear Generating Station
and Lessons Learned |
| in93052 |
07/14/1993 |
Draft NUREG-1477, "Voltage-Based Interim Plugging Criteria For Steam Generator
Tubes" |
| in93051 |
07/09/1993 |
Repetitive Overspeed Tripping of Turbine-Driven Auxiliary Feedwater Pumps |
| in93050 |
07/08/1993 |
Extended Storage of Sealed Sources |
| in93049 |
07/08/1993 |
Improper Integration of Software Into Operating Practices |
| in93048 |
07/06/1993 |
Failure of Turbine-Driven Main Feedwater Pump To Trip Because of Contaminated
Oil |
| in93047 |
06/18/1993 |
Unrecognized Loss of Control Room Annunciators |
| in93045 |
06/16/1993 |
Degradation of Shutdown Cooling System Performance |
| in93044 |
06/15/1993 |
Operational Challenges During a Dual-Unit Transient |
| in93046 |
06/10/1993 |
Potential Problem With Westinghouse Rod Control System & Inadvertent
Withdrawal of a Single Rod Control Cluster Assembly |
| in93043 |
06/10/1993 |
Use of Inappropriate Lubrication Oils in Safety-Related Applications |
| in93042 |
06/09/1993 |
Failure of Anti-Rotation Keys in Motor-Operated Valves Manufactured by
Velan |
| in93041 |
05/28/1993 |
One Hour Fire Endurance Test Results For ... Kaowool, ... FS-195, and
... Interam E-50 Fire Fire Barrier Systems |
| in93040 |
05/26/1993 |
Fire Endurance Test Results for Thermal Ceramics FP-60 Fire Barrier Material |
| in93039 |
05/25/1993 |
Radiation Beams From Power Reactor Biological Shields |
| in93038 |
05/24/1993 |
Inadequate Testing of Engineered Safety Features Actuation Systems |
| in93037 |
05/19/1993 |
Eyebolts With Indeterminate Properties Installed in Limitorque Valve Operator
Housing Covers |
| in93036 |
05/07/1993 |
Notifications, Reports, and Records of Misadministrations |
| in93035 |
05/12/1993 |
Insights From Common-Cause Failure Events |
| in93034s1 |
05/06/1993 |
Potential for Loss of Emergency Cooling Function Due to a Combination
of Operational and Post-LOCA Debris in Containment |
| in93053s1 |
04/29/1994 |
Effect of Hurricane Andrew on Turkey Point Nuclear Generating Station
and Lessons Learned |
| in93033 |
04/28/1993 |
Potential Deficiency of Certain Class 1E Instrumentation and Control Cables |
| in93034 |
04/26/1993 |
Potential For Loss of Emergency Cooling Function Due to a Combination
of Operational and Post-LOCA Debris in Containment |
| in93032 |
04/21/1993 |
Nonconservative Inputs for Boron Dilution Event Analysis |
| in93031 |
04/13/1993 |
Training of Nurses Responsible for the Care of Patients With Brachytherapy
Implants |
| in93030 |
04/12/1993 |
NRC Requirements for Evaluation of Wipe Test Results; Calibration of Count
Rate Survey Instruments |
| in93029 |
04/12/1993 |
Problems With the Use of Unshielded Test Leads in Reactor Protection System
Circuitry |
| in93028 |
04/09/1993 |
Failure to Consider Loss of DC Bus in the Emergency Core Cooling System
Evaluation May Lead to Nonconservative Analysis |
| in93027 |
04/08/1993 |
Level Instrumentation Inaccuracies Observed During Normal Plant Depressurization |
| in93026 |
04/07/1993 |
Grease Solidification Causes Molded Case Circuit Breaker Failure to Close |
| in93025 |
04/01/1993 |
Electrical Penetration Assembly Degradation |
| in93023 |
03/31/1993 |
Weschler Instruments Model 252 Switchboard Meters |
| in93024 |
03/31/1993 |
Distribution of Revision 7 of NUREG-1021, "Operator Licensing Examiner
Standards" |
| in93022 |
03/26/1993 |
Tripping of Klockner-Moeller Molded-Case Circuit Breakers Due to Support
Lever Failure |
| in93021 |
03/25/1993 |
Summary of ... Observations Compiled During Engineering Audits or Inspections
of Licensee Erosion/Corrosion Programs |
| in93017r1 |
03/25/1994 |
Safety Systems Response to Loss of Coolant and Loss of Offsite Power |
| in93020 |
03/24/1993 |
Thermal Fatigue Cracking of Feedwater Piping to Steam Generators |
| in93019 |
03/17/1993 |
Slab Hopper Bulging |
| in93018 |
03/10/1993 |
Portable Moisture-Density Gauge User Responsibilities During Field Operations |
| in93017 |
03/08/1993 |
Safety Systems Response to Loss of Coolant and Loss of Offsite Power |
| in93016 |
02/19/1993 |
Failures of Nut-Locking Devices in Check Valves |
| in93014 |
02/18/1993 |
Clarification of 10 CFR 40.22, Small Quantities of Source Material |
| in93015 |
02/18/1993 |
Failure to Verify the Continuity of Shunt Trip Attachment Contacts in
Manual Safety Injection and Reactor Trip Switches |
| in93013 |
02/16/1993 |
Undetected Modification of Flow Characteristics in the High Pressure Safety
Injection System |
| in93012 |
02/11/1993 |
Off-Gassing in Auxiliary Feedwater System Raw Water Sources |
| in93011 |
02/04/1993 |
Single Failure Vulnerability of Engineered Safety Features Actuation Systems |
| in93010 |
02/02/1993 |
Dose Calibrator Quality Control |
| in93009 |
02/02/1993 |
Failure of Undervoltage Trip Attachment on Westinghouse Model DB-50 Reactor
Trip Breaker |
| in93008 |
02/01/1993 |
Failure of Residual Heat Removal Pump Bearings Due to High Thrust Loading |
| in93007 |
02/01/1993 |
Classification of Transportation Emergencies |
| in93026s1 |
01/31/1994 |
Grease Solidification Causes Molded-Case Circuit Breaker Failure to Close |
| in93006 |
01/22/1993 |
Potential Bypass Leakage Paths Around Filters Installed in Ventilation
Systems |
| in93005 |
01/14/1993 |
Locking of Radiography Exposure Devices |
| in93004 |
01/07/1993 |
Investigation and Reporting of Misadministrations by the Radiation Safety
Officer |
| in93003 |
01/05/1993 |
Recent Revisions to 10 CFR Part 20 and Change of Implementation Date to
January 1, 1994 |
| in93002 |
01/04/1993 |
Malfunction of a Pressurizer Code Safety Valve |
| in93001 |
01/04/1993 |
Accuracy of Motor-Operated Valve Diagnostic Equipment Manufactured by
Liberty Technologies |
