05000293/LER-2008-001, Regarding Failure to Meet Technical Specification Requirements for Secondary Containment
05000293/LER-2009-002, Failure to Meet Technical Specification Requirements for Secondary Containment
RA-17-072, License Amendment Request - Proposed Defueled Technical Specifications and Revised License Conditions for Permanently Defueled Condition
BVY 14-037, Technical Specifications Proposed Change No. 309, Defueled Technical Specifications and Revised License Conditions for Permanently Defueled Condition - Supplement 2
BVY 14-036, Response to Request for Additional Information on Technical Specifications Proposed Change No. 306, Eliminate Certain ESF Requirements During Movement of Irradiated Fuel - Supplement 1
RA-11-015, Supplement to License Amendment Request Regarding Elimination of Daily Testing of an Operable Emergency Diesel Generator (EDG) When the Other EDG Is Declared Inoperable
RA-10-078, Response to Draft Request for Additional Information Re License Amendment Request on Elimination of Daily Testing of an Operable Emergency Diesel Generator (EDG) When the Other EDG Is Declared Inoperable
RA-08-009, Draft - Outlines (Folder 2) (Facility Ltr. Dtd. - 01/16/08), Submittal of Initial Operator Licensing Examination Outline
05000219/LER-1979-038-03, /03L-0:on 791105,diesel Generator 1 Failed to Start During Diesel Generator 20% Plus Load Test.Caused by Component Failure.Breaker Position Switch Readjusted
BVY 05-062, Technical Specification Proposed Change No. 270 - Supplement No. 1 Administrative Changes - Response to Request for Additional Information
L-MT-05-013, Additional Technical Specification Changes for the Monticello Nuclear Generating Plant Regarding Application of Alternative Source Term (AST) Methodology to Re-Evaluate the Fuel-Handling Accident
BVY 04-118, Technical Specification Proposed Change No. 270 Administrative Changes
NL-02-113, Gas Turbine Generator Fuel Oil Storage Requirements
NL-02-002, License Amendment Request (LAR No. 02-002) Regarding Gas Turbine Generator Fuel Oil Storage Requirements
B17621, Application for Amend to License DPR-21,reflecting Permanently Defueled Condition of Unit 1,Tech Specs Administrative Controls Section as Allowed by Guidance Contained in NRC Administrative Ltr 95-06
B11689, Application for Amend to License DPR-21,revising Tech Specs to Define Refuel Condition & Operability Requirements of Sys During Refuel & Shutdown Conditions.Fee Paid
B16312, Application for Amend to License DPR-21,by Incorporating Changes Representing Revs to TS Tables 3.1.1,3.2.1,3.2.2, 3.2.3,Section 3.2.D.2 & Section 3.7/4.7.C
HL-3044, Responds to NRC Re Violations Noted in Insp Repts 50-321/92-22 & 50-366/92-22.Corrective Actions:Design Change Will Be Implemented by 930531 to Remove Ability to Override Automatic Isolation Function for Dampers
BVY-94-105, Proposed Change 177 to License DPR-28,replacing TS 3.7.B, Pages 152,153 & 154 Re Standby Gas Treatment Power Supply Requirements During Refueling Operations
RA-10-027, Technical Specification Change Request No. 356, Elimination of Daily Testing of an Operable Emergency Diesel Generator (EDG) When the Other EDG Is Declared Inoperable
05000259/LER-1989-006-01, :on 890228,loss of Secondary Containment Integrity Occurred When Ventilation Exhaust Radiation Monitor Repaired on 890225 But Not Tested Following Maint. Caused by Personnel Error.Procedures Revised
05000259/LER-1989-006, :on 890228,discovered That Secondary Containment Ventilation Exhaust Radiation Monitor Repaired on 890225 W/O Being Tested Following Maint.Caused by Personnel Error.Plant Procedures Revised
05000260/LER-1988-019-01, :on 881214 & 27,discovered That Neutron Source Movement Performed W/O Min Required Trains of stand-by Gas Treatment Sys.Caused by Failure to Track Status of Subj Sys Train Following Performance of Surveillance
05000260/LER-1988-050, :on 881214,neutron Source Movement Between Units Spent Fuel Pools Performed W/O Min Standby Gas Treatment Sys Train Technically Operable.Caused by Failure to Track Operability Status.Procedure Revised
05000259/LER-1986-012-01, :on 860416,personnel Access Doors from Turbine Bldg Into Reactor Bldg Momentarily Open at Same Time.Caused by Proximity Switch & Latch Plate Out of Adjustment. Interlocking Mechanisms Repaired
05000331/LER-1985-040, :on 851010,unintentional Momentary Violation of Secondary Containment Occurred When Both Airlock Doors Simultaneously Opened.Caused by Loose Wire on Solenoid.Wire Repaired.Amend to Tech Specs Requested
05000331/LER-1985-045, :on 851116 & 22,momentary Inadvertent Violations of Secondary Containment Occurred.Caused by Defective Door Interlock Mechanisms.New Mechanisms Installed
05000331/LER-1985-038, :on 850906,both Doors of Airlock Between Reactor & Turbine Bldgs Inadvertently Opened Simultaneously, Resulting in Secondary Containment Violations.Caused by Personnel Error.Door Interlocks Repaired
05000331/LER-1985-030, :on 850731,two Secondary Containment Airlock Doors Simultaneously Opened.Caused by out-of-adjustment Door Interlock Mechanism.Defective Mechanism Repaired
05000331/LER-1985-016, :on 850601,unintentional Momentary Violation of Secondary Containment Occurred & Two Secondary Containment Airlock Doors Simultaneously Opened.Caused by out-of-adjustment Door Interlock Mechanism
05000331/LER-1984-045, :on 841219,two Secondary Containment Airlock Doors Opened Simultaneously.Caused by Ineffective Door Latching Mechanism
05000331/LER-1985-003, :on 850125,doors of Airlock Between Reactor & Turbine Bldgs Inadvertently Opened Simultaneously.On 850130, Doors of Railroad Airlock Opened Simultaneously.Caused by Bad Solenoid in Interlock Mechanism
05000331/LER-1984-035, :on 840921 & 26,four Violations Occurred Involving Two Secondary Containment Air Lock Doors Simultaneously Opening.Caused by Defective Door Interlock & Latching Mechanisms.Mechanisms Repaired
05000331/LER-1984-034, :Between 840821 & 0920,four Unintentional Momentary Violations Occurred When Two Secondary Containment Airlock Doors Simultaneously Opened.Caused by Defective Door Interlock & Latching Mechanisms
05000331/LER-1984-030, :on 840821,during Normal Operation,Momentary Violation of Second Containment Occurred When Two Secondary Containment Airlock Doors Opened Simultaneously.Caused by Personnel Error
05000278/LER-1984-012-01, :on 840912,section of Standby Gas Treatment Sys Duct Work in Reactor Bldg Sump Room Collapsed.Caused by Valving Error During Transfer of Equipment Cell Exhaust. Ductwork Repaired
05000219/LER-1984-012, :on 840604,emergency Diesel Generator 1 Day Tank Level High/Low Alarm Received.Generator 1 Shut Down, Resulting in Both Emergency Diesel Generators Inoperable Simultaneously.Caused by Repositioned Switch
05000254/LER-1984-006-03, :on 840501,performance of Maint on Turbine Isolation Valves & MSIVs Resulted in Communication Via Main Steam Piping Between Reactor Bldg & Turbine Bldg.Caused by Procedural Inadequacy
05000254/LER-1983-036-03, /03L-0:on 830920,discovered Ripped Ventilation & Fire Stop Boot.Caused by Extended Exposure of Boot to Heat & Normal Wear.Urethane Foam Matl Installed & Boot Replaced
05000254/LER-1983-032-03, /03L-0:on 830901,while Preparing for Refuel Outage,Secondary Containment Capability Test Revealed Vacuum Attainment of 0.15-inch Water.Caused by Aged Gaskets on Personnel Access Doors.Gaskets Replaced
05000277/LER-1994-007-02, :on 940810,secondary Containment Breached to Fight Fire Inside Unit 2 Vent Stack Protective Siding.Caused by Work Area Not Being Properly Staged.Fire Promptly Extinguished & Secondary Containment Restored
05000259/LER-1982-062-01, /01T-0:on 820831,discovered That Normal Pressure Control Regulators for All Units Were Being Calibr Instead of Regulators for Standby Gas Treatment Sys.Caused by Proceural Inadequacy Due to Misinterpretation of Tech Specs
05000254/LER-1978-026-03, /03L-0 on 780920:A RHR Room Watertight Door Found Open.Caused by Contractor Personnel Ignorance. Personnel Admonished to Heed Procedures at All Times
05000293/LER-1993-026, :on 931108,low Reactor Vessel Water Level Signal Occurred While Shutdown,Resulting in Automatic Scram Signal & Containment Sys Isolations.Caused by Licensed Operator Error.Procedure 2.1.1 Will Be Revised
05000277/LER-1982-007-03, /03L-0:on 820321,refueling Floor Outboard Isolation Valve Failed to Operate.Caused by Stuck Plunger on 3-way Solenoid Valve SV 20452.Valve (Asc Model THT-8316B24) Removed,Repaired,Tested & Returned to Svc
05000321/LER-1990-008-01, :on 900505,determined That Reactor Vessel Head Vent Valves 1B21-F004 & 1B21-F005 Closed Contrary to Tech Spec 3.7.C.2.a(2) Requirements.Caused by Cognitive Personnel Error.Reactor Vessel Head Vent Valves Reopened
05000263/LER-1989-040, :on 891219,secondary Containment Failed to Meet Operability Requirements for Secondary Containment Capability.Caused by Design Deficiencies.On 930317,addl Design Deficiency Noted Re Damper Controls
05000259/LER-1990-003, :on 900201,normally Open Fan Inlet Damper Discovered Closed Causing Standby Gas Treatment Sys Train B to Be Inoperable.Root Cause of Event Could Not Be Determined.Mechanical Stop Repositioned
05000254/LER-1990-002-05, :on 900204,determined That Only Reactor Bldg Differential Pressure of 0.24-inch Water Vacuum Could Be Obtained,In Violation of Tech Spec Required 0.25 Inch.Caused by Testing Deficiency.Leak Paths Sealed
05000321/LER-1979-074-03, /03L-0:on 790925,secondary Containment Was Violated by Opening Both Doors of Refueling Floor Ventilation Room Air Lock.Caused by Outside Air Lock Door Becoming Ajar Due to Not Being Latched
05000280/LER-1993-001, :on 930108,reactor Trip & Safety Injection Occurred Due to Spurious Initiation of Train a High Consequence Limiting Safeguards Signal.Caused by Cycling of Relay 3-CLS-1AM.Drawing Error Corrected
05000260/LER-1995-008-01, :on 951004,reactor Zone Isolation Dampers Failed to Close Due to Black Residue on core-plugnut Interface Inside Solenoid Valves.Removed & Replaced Solenoids & Increased Test Frequency When Dampers Failed
05000260/LER-1995-008, :on 951004,reactor Zone Isolation Dampers Failed to Close.Caused by Black Residue on core-plugnut Interface Inside Solenoid Valves.Removed/Replaced Solenoid Valves
05000293/LER-1917-013, Regarding Reportable Conditions Involving Standby Gas Treatment System and Secondary Containment Lnoperability Not Reported During the Previous Three Years
05000219/LER-2016-001, Regarding Failure of the 1 Emergency Diesel Generator During Surveillance Testing Due to a Cooling Water System Leak
05000219/LER-2015-003, Regarding Failure of the No. 1 Emergency Diesel Generator to Start During Surveillance Testing
BVY 14-010, Defueled Technical Specifications and Revised License Conditions for Permanently Defueled Condition
05000296/LER-1992-003-04, :on 921027,discovered Failure of Reactor Zone Isolation Dampers to Close.Caused by Failed Solenoid Operated Valve.Outboard Damper Manually Closed by Isolating Air Supply & Bleeding Air Off Damper
05000331/LER-1984-038, :Between 841029-1115,two Secondary Containment Airlock Doors Simultaneously Opened Three Times.Caused by Defective Door Latch Mechanisms or Interlock Solenoids. Devices Repaired
05000259/LER-1986-028-01, :on 860828,personnel Access Doors from Turbine Bldg Into Reactor Bldg Opened at Same Time Resulting in Momentary Loss of Secondary Containment.Caused by Rectifier Solenoid Failure.Rectifier Replaced
05000263/LER-1995-005-01, :on 950518,two Main RB Supply Fans Tripped. Caused by Electrical Disturbance on 345 Kv Power Lines Connected to Plant Substation.Ventilation Configuration Changed
05000265/LER-1983-022-01, /01T-0:on 831115,during Routine Insp,Msiv Room Interlock Doors Found Defeated,While MSIV Room Part of Secondary Containment,Resulting in Degradation of Secondary Containment Integrity