United States Nuclear Regulatory Commission - Protecting People and the Environment

Information Notices - 1986

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Document Number Title Revision Publish Date Reviewed Date
IN-86-110 Anomalous Behavior of Recirculation Loop Flow in Jet Pump BWR Plants -- 12/31/1986 --
IN-86-109 Diaphragm Failure in Scram Outlet Valve Causing Rod Insertion -- 12/29/1986 --
IN-86-108 Degradation of Reactor Coolant System Pressure Boundary Resulting from Boric Acid Corrosion S3 01/05/1995 --
S2 11/19/1987 --
S1 04/20/1987 --
-- 12/29/1986 --
IN-86-107 Entry into PWR Cavity with Retractable Incore Detector Thimbles Withdrawn -- 12/29/1986 --
IN-86-106 Feedwater Line Break S3 11/10/1988 --
S2 03/18/1987 --
S1 02/13/1987 --
-- 12/16/1986 --
IN-86-105 Potential for Loss of Reactor Trip Capability at Intermediate Power Levels -- 12/19/1986 --
IN-86-104 Unqualified Butt Splice Connectors Identified in Qualified Penetrations -- 12/16/1986 --
IN-86-103 Respirator Coupling Nut Assembly Failures -- 12/16/1986 --
IN-86-102 Repeated Multiple Failures of Steam Generator Hydraulic Snubbers Due to Control Valve Sensitivity -- 12/15/1986 --
IN-86-101 Loss of Decay Heat Removal Due to Loss of Fluid Levels in Reactor Coolant System -- 12/12/1986 --
IN-86-100 Loss of Offsite Power to Vital Busses at Salem 2 -- 12/12/1986 --
IN-86-99 Degradation of Steel Containments S1 02/14/1991 --
-- 12/08/1986 --
IN-86-98 Offsite Medical Services -- 12/02/1986 --
IN-86-97 Emergency Communications System -- 11/28/1986 --
IN-86-96 Heat Exchanger Fouling Can Cause Inadequate Operability of Service Water Systems -- 11/20/1986 --
IN-86-95 Leak Testing Iodine-125 Sealed Sources in Lixi, Inc. Imaging Devices and Bone Mineral Analyzers -- 11/10/1986 --
IN-86-94 Hilti Concrete Expansion Anchor Bolts -- 11/06/1986 --
IN-86-93 IEB 85-03 Evaluation of Motor-Operators Identifies Improper Torque Switch Settings -- 11/03/1986 --
IN-86-92 Pressurizer Safety Valve Reliability -- 11/04/1986 --
IN-86-91 Limiting Access Authorizations -- 11/03/1986 --
IN-86-90 Requests to Dispose of Very Low-Level Radioactive Waste Pursuant to 10 CFR 20.302 -- 11/03/1986 --
IN-86-89 Uncontrolled Rod Withdrawal Because of a Single Failure -- 10/16/1986 --
IN-86-88 Compensatory Measures for Prolonged Periods of Security System Failures -- 10/15/1986 --
IN-86-87 Loss of Offsite Power upon an Automatic Bus Transfer -- 10/10/1986 --
IN-86-86 Clarification of Requirements for Fabrication and Export of Certain Previously Approved Type B Packages -- 10/10/1986 --
IN-86-85 Enforcement Actions Against Medical Licensees for Willfull Failure to Report Misadministrations -- 10/03/1986 --
IN-86-84 Rupture of Nominal 40-Millicurie Iodine-125 Brachytherapy Seed Causing Significant Spread of Radioactive Contamination -- 09/30/1986 --
IN-86-83 Underground Pathways into Protected Areas, Vital Areas, Material Access Areas, and Controlled Access Areas -- 09/19/1986 --
IN-86-82 Failures of Scram Discharge Volume Vent and Drain Valves 1 11/04/1986 --
-- 09/16/1986 --
IN-86-81 Broken External Closure Springs on Atwood & Morrill Main Steam Isolation Valves S1 01/11/1988 --
-- 09/15/1986 --
IN-86-80 Unit Startup with Degraded High Pressure Safety Injection System -- 09/12/1986 --
IN-86-79 Degradation or Loss of Charging Systems at PWR Nuclear Power Plants Using Swing-Pump Design -- 09/02/1986 --
IN-86-78 Scram Solenoid Pilot Valve (SSPV) Rebuild Kit Problems -- 09/02/1986 --
IN-86-77 Computer Program Error Report Handling -- 08/28/1986 --
IN-86-76 Problems Noted in Control Room Emergency Ventilation Systems -- 08/28/1986 --
IN-86-75 Incorrect Maintenance Procedure on Traversing Incore Probe Lines -- 08/21/1986 --
IN-86-74 Reduction of Reactor Coolant Inventory because of Misalignment of RHR Valves -- 08/20/1986 --
IN-86-73 Recent Emergency Diesel Generator Problems -- 08/20/1986 --
IN-86-72 Failure 17-7 PH Stainless Steel Springs in Valcor Valves Due to Hydrogen Embrittlement -- 08/19/1986 --
IN-86-71 Recent Identified Problems with Limitorque Motor Operators -- 08/19/1986 --
IN-86-70 Potential Failure of All Emergency Diesel Generators -- 08/18/1986 --
IN-86-69 Spurious System Isolations Caused by the Panalarm Model 86 Thermocouple Monitor -- 08/18/1986 --
IN-86-68 Stuck Control Rod -- 08/15/1986 --
IN-86-67 Portable Moisture/Density Gauges: ... Incidents and Common Violations of Requirements for Use, Transportation, and Storage -- 08/15/1986 --
IN-86-66 Potential for Failure of Replacement AC Coils ... Westinghouse Electric ... for ... Class 1E Motor Starters and Contactors -- 08/15/1986 --
IN-86-65 Malfunctions of ITT Barton Model 580 Series Switches During Requalification Testing -- 08/14/1986 --
IN-86-64 Deficiencies in Upgrade Programs for Plant Emergency Operating Procedures S1 04/20/1987 --
-- 08/14/1986 --
IN-86-63 Loss of Safety Injection Capability -- 08/06/1986 --
IN-86-62 Potential Problems in Westinghouse Molded Case Circuit Breakers Equipped with a Shunt Trip -- 07/31/1986 --
IN-86-61 Failure of Auxiliary Feedwater Manual Isolation Valve -- 07/28/1986 --
IN-86-60 Unanalyzed Post-LOCA Release Paths -- 07/28/1986 --
IN-86-59 Increased Monitoring of ... Patients with Implanted Coratomic, Inc. Model C-100 and C-101 Nuclear-Powered Cardiac Pacemakers -- 07/14/1986 --
IN-86-58 Dropped Fuel Assembly -- 07/11/1986 --
IN-86-57 Operating Problems with Solenoid Operated Valves at Nuclear Power Plants -- 07/11/1986 --
IN-86-56 Reliability of Main Steam Safety Valves -- 07/10/1986 --
IN-86-55 Delayed Access to Safety-Related Areas and Equipment During Plant Emergencies -- 07/10/1986 --
IN-86-54 Criminal Prosecution ... Former Radiation Safety Officer Who ... Directed an Unqualified Individual to Perform Radiography -- 06/27/1986 --
IN-86-53 Improper Installation of Heat Shrinkable Tubing -- 06/26/1986 --
IN-86-52 Conductor Insulation Degradation on Foxboro Model E Controllers -- 06/26/1986 --
IN-86-51 Excessive Pneumatic Leakage in the Automatic Depressurization System -- 06/18/1986 --
IN-86-50 Inadequate Testing to Detect Failures of Safety-Related Pneumatic Components or Systems -- 06/18/1986 --
IN-86-49 Age/Environment Induced Electrical Cable Failures -- 06/16/1986 --
IN-86-48 Inadequate Testing of Boron Solution Concentration in the Standby Liquid Control System -- 06/13/1986 --
IN-86-47 Erratic Behavior of Static "O" Ring Differential Pressure Switches -- 06/10/1986 --
IN-86-46 Improper Cleaning and Decontamination of Respiratory Protection Equipment -- 06/12/1986 --
IN-86-45 Potential Falsification of Test Reports on Flanges Manufactured by Golden Gate Forge and Flange, Inc. -- 06/10/1986 --
IN-86-44 Failure to Follow Procedures when Working in High Radiation Areas -- 06/10/1986 --
IN-86-43 Problems with Silver Zeolite Sampling of Airborne Radioiodine -- 06/10/1986 --
IN-86-42 Improper Maintenance of Radiation Monitoring Systems -- 06/09/1986 --
IN-86-41 Evaluation of Questionable Exposure Readings of Licensee Personnel Dosimeters -- 06/09/1986 --
IN-86-40 Degraded Ability to Isolate the Reactor Coolant System from Low-Pressure Coolant Systems in BWRs -- 06/05/1986 --
IN-86-39 Failures of RHR Pump Motors and Pump Internals -- 05/20/1986 --
IN-86-38 Deficient Operator Actions Following Dual Function Valve Failures -- 05/20/1986 --
IN-86-37 Degradation of Station Batteries -- 05/16/1986 --
IN-86-36 Change in NRC Practice Regarding Issuance of Confirming Letters to Principal Contractors -- 05/16/1986 --
IN-86-35 Fire in Compressible Material at Dresden Unit 3 -- 05/15/1986 --
IN-86-34 Improper Assembly, Material Selection, and Test of Valves and Their Actuators -- 05/13/1986 --
IN-86-33 Information for Licensee Regarding the Chernobyl Nuclear Plant Accident -- 05/06/1986 --
IN-86-32 Request for Collection of Licensee Radioactivity Measurements Attributed to the Chernobyl Nuclear Plant Accident S1 06/06/1986 --
-- 05/02/1986 --
IN-86-31 Unauthorized Transfer and Loss of Control of Industrial Nuclear Gauges S1 07/14/1986 --
-- 05/05/1986 --
IN-86-30 Design Limitations of Gaseous Effluent Monitoring Systems -- 04/29/1986 --
IN-86-29 Effects of Changing Valve Motor-Operator Switch Settings -- 04/25/1986 --
IN-86-28 Telephone Numbers to the NRC Operations Center and Regional Offices -- 04/24/1986 --
IN-86-27 Access Control at Nuclear Facilities -- 04/21/1986 --
IN-86-26 Potential Problems in Generators Manufactured by Electrical Products Incorporated -- 04/17/1986 --
IN-86-25 Traceability and Material Control of Material and Equipment, Particularly Fasteners S1 10/15/1986 --
-- 04/11/1986 --
IN-86-24 Respirator Users Notice: Increased Inspection Frequency for Certain Self-Contained Breathing Apparatus Air Cylinders -- 04/11/1986 --
IN-86-23 Excessive Skin Exposures Due to Contamination with Hot Particles -- 04/09/1986 --
IN-86-22 Underresponse of Radiation Survey Instrument to High Radiation Fields -- 03/31/1986 --
IN-86-21 Recognition of American Society of Mechanical Engineers Accreditation Program for N Stamp Holders S2 04/16/1991 --
S1 12/04/1986 --
-- 03/31/1986 --
IN-86-20 Low-Level Radioactive Waste Scaling Factors, 10 CFR Part 61 -- 03/28/1986 --
IN-86-19 Reactor Coolant Pump Shaft Failure at Crystal River -- 03/21/1986 --
IN-86-18 NRC On-Scene Response During a Major Emergency -- 03/26/1986 --
IN-86-17 Update of Failure of Automatic Sprinkler System Valves to Operate -- 03/24/1986 --
IN-86-16 Failures to Identify Containment Leakage Due to Inadequate Local Testing of BWR Vacuum Relief System Valves -- 03/11/1986 --
IN-86-15 Loss of Offsite Power Caused by Problems in Fiber Optics Systems -- 03/10/1986 --
IN-86-14 PWR Auxiliary Feedwater Pump Turbine Control Problems S2 08/26/1991 --
S1 12/17/1986 --
-- 03/10/1986 --
IN-86-13 Standby Liquid Control System Squib Valves Failure to Fire S1 08/05/1986 --
-- 02/21/1986 --
IN-86-12 Target Rock Two-Stage SRV Setpoint Drift -- 02/25/1986 --
IN-86-11 Inadequate Service Water Protection Against Core Melt Frequency -- 02/25/1986 --
IN-86-10 Safety Parameter Display System Malfunctions -- 02/13/1986 --
IN-86-09 Failure of Check and Stop Check Valves Subjected to Low Flow Conditions -- 02/03/1986 --
IN-86-08 Licensee Event Report (LER) Format Modification -- 02/03/1986 --
IN-86-07 Lack of ... Instruction and ... Observance of Precautions During Maintenance and Testing of Diesel Generator ... Governors -- 02/03/1986 --
IN-86-06 Failure of Lifting Rig Attachment While Lifting the Upper Guide Structure at St. Lucie Unit 1 -- 02/03/1986 --
IN-86-05 Main Steam Safety Valve Test Failures and Ring Setting Adjustments S1 10/16/1986 --
-- 01/31/1986 --
IN-86-04 Transient Due to Loss of Power to Integrated Control System at a Pressurized Water Reactor Designed by Babcock & Wilcox -- 01/31/1986 --
IN-86-03 Potential Deficiencies in Environmental Qualification of Limitorque Motor Valve Operator Wiring -- 01/14/1986 --
IN-86-02 Failure of Valve Operator Motor During Environmental Qualification Testing -- 01/06/1986 --
IN-86-01 Failure of Main Feedwater Check Valves Causes Loss of Feedwater System Integrity and Water-Hammer Damage -- 01/06/1986 --
Page Last Reviewed/Updated Tuesday, September 01, 2015