05000327/LER-2015-003, Regarding Manual Reactor Trip Due to Loss of Power to the Vital Instrument Power Board 1-II
05000250/LER-2002-001, Florida Power & Light, Vital Battery Cell Voltage Below Technical Specification Allowable on June 5, 2002
SBK-L-17081, License Amendment Request 17-02, Change to the Technical Specifications Requirement for DC Batteries
Information Notice 2010-25, Inadequate Electrical Connections
L-2011-498, Units, 3 & 4 - 10 CFR 50.59 Summary Report of Changes, Tests and Experiments for Period Covering 12/04/2009 Through 05/16/2011 and Updated Technical Specification Bases
CNL-17-119, Application to Modify Watts Bar Nuclear Plant, Units 1 and 2 Technical Specifications 3.8.9 Regarding Alternating Current (AC) Vital Buses (WBN-TS-17-19)
L-2008-245, Transmittal of 10 CFR 50.59 Summary Report of Changes, Tests and Experiments Made Without Prior Commission Approval for Period 12/09/06 - 05/11/08
L-99-162, Application for Amend to License DPR-31,modifying TSs 3.8.1.1,3.4.3 & 3.5.2 to Extend AOT for Inoperable EDG from 72 Hours to 7 Days on one-time Basis
05000528/LER-1991-007, :on 910822,determined That Normal HVAC Sys Cooling to Various ESF Pump Rooms Not Adequate.Caused by Not Recognizing That Normal HVAC Sys Was Not 100 Percent Redundant to Some Components.Guidance Issued
NOC-AE-07002167, Amended Changes to Technical Specification 3/4.8.2 for Batteries and DC Systems
NOC-AE-06002036, Revised Broad Scope Risk-Informed Technical Specification Amendment Request
NOC-AE-06001969, Response to NRC RAI on STPNOC Proposed Risk-Informed Technical Specifications
LR-N18-0108, Response to Request for Additional Information, License Amendment Request: Inverter Allowed Outage Time (AOT) Extension
LR-N18-0116, Response to Request for Additional Information, License Amendment Request: Inverter Allowed Outage Time (AOT) Extension
LR-N18-0112, Response to Request for Additional Information, License Amendment Request: Inverter Allowed Outage Time (AOT) Extension
L-2019-005, License Amendment Request 266, Clarify Requirements When One Unit Is Outside the Applicability of Certain Technical Specifications
05000366/LER-1980-104-03, /03L-0:on 800711,while in Normal Shutdown mode,4 Kv Emergency Switchgear 2F Normal Supply Breaker Tripped & Swapped to Alternate Supply Breaker Which Also Tripped. Caused by Missing Jumper Resulting from Const Fault
NOC-AE-05001913, Response to Request for Additional Information: Proposed Amendment to Technical Specification 3/4.8.2 to Modify Requirements Related to Batteries and DC Systems
NOC-AE-05001837, Proposed Amendment to Technical Specification 3/4.8.2 to Modify Requirements Related to Batteries and DC Systems
05000366/LER-1981-038-03, /03L-0:on 810421,LPCI Inverter a Tripped Resulting in Limited Conditions for Operation Per Tech Spec 3.8.2.1.e. Caused by Logic Failure.Inverter Reset
05000327/LER-1980-166-03, /03L-0:on 800927,during Normal Operation in Mode 4,output Breaker for Vital Inverter 2-IV Tripped Rendering Vital Instrument Power Board 2-IV Inoperable.Caused by Bad Auxiliary Switch on K1 Relay.Auxiliary Switch Replaced
SBK-L-19129, Submittal of Changes to the Seabrook Station Technical Specification Bases
NOC-AE-06001964, Proposed Amendment to Technical Specification 3/4.8.2 to Modify Requirements Related to Batteries and DC Systems -- Revised
L-2002-210, Proposed License Amendments Re Administrative Update of Technical Specifications, Section 4.4.1.1 - Appendix B
NOC-AE-02001402, Response to NRC Questions on Proposed Change to Loss of Power & AC Sources TS
2CAN052103, Response to Request for Additional Information Related to License Amendment Request to Adopt a Safety Function Determination Program (SFDP)
RA-20-0223, Supplement to Application to Revise Harris Technical Specifications to Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b
L-99-180, Forwards Responses to NRC RAI Questions for Chapter 3.8 of Ts.Proposed Revs to TS Previously Submitted with LAR Related to RAI
LR-N980363, Application for Amend to License NPF-57,permitting Use of non-class 1E Single Cell Battery Chargers,With Proper Electrical Isolation,For Charging Connected Cells in Operable Class 1E Batteries
NMP2L2794, Supplemental Information to Support Review of Nine Mile Point Nuclear Station, Unit 2, License Amendment Request to Adopt TSTF-582, Revision 0
ST-HL-AE-2183, Forwards Attachment 1 Clarifying 870508 Proposal to Change Tech Spec 3.8.2.1 Re Capacity of 125-volt Dc Battery Chargers,Per 870512 Conversation.Single Charger Capable of Supplying 100% of Load on Channels I & IV Except as Stated
ST-HL-AE-2109, Forwards Appeals Statements Re Proposed Tech Specs Rejected by Nrc.Rereview of Info & Incorporation in Proof & Review Tech Specs Requested
ST-HL-AE-1882, Forwards Draft Rev 2 to Tech Specs Identified for Further Comment or Resolution During NRC 870107 Site Visit. Justifications Also Encl
SBK-L-22024, Response to Request for Additional Information (Raj) Regarding License Amendment Request 21-01, Revise 120-Volt AC Vital Instrument Panel Requirements
2CAN118302, Application to Amend License NPF-6,revising Tech Specs & Corresponding Surveillance Requirements to Adopt STS 3.8.2.1 Re Electrical Power Sys & Surveillance Requirements Noted in Rev 4 to NUREG-0452
ST-HL-AE-5041, Forwards Supplemental Info for TS 3.8.2 Requiring Only One of Battery Chargers Associated W/Each Class 1E 125 Volt Dc Channel I & Channel IV to Be Operable
ST-HL-AE-4927, Application for Amends to Licenses NPF-76 & NPF-80,revising TS 3.8.2.1 & 3.8.2.2 to Require Only One of Two Battery Chargers Associated W/Each Class 1E 125 Volt Dc Channel I & IV to Be Operable
NRC-91-0162, Supplement to 911205 Application for Amend to License NPF-43 Changing TS Re Emergency Equipment Cooling Water & Emergency Equipment Svc Water to Delay Entry Into TS Actions for Ac Electrical Distribution Sys & Battery Chargers
JSP-615-92, Application for Amend to License NPF-62,changing TS 3/4.7.1.1, Shutdown Svc Water Sys (Loops A,B & C) & TS 3/4.7.2, CR Ventilation Sys, to Allow Tensioning & Detensioning Reactor Pressure Vessel Head
JSP-504-93, Application for Amend to License NPF-62,changing Tech Spec 3/4.8.2.1, DC Sources-Operating
AECM-90-0145, Application for Amend to License NPF-29,changing Tech Spec 3/4.8.2 Re Dc Sources & Adding Note to Tech Spec Table 4.8.2.1-1 Re Battery Surveillance Requirements
L-2020-164, License Amendment to Allow Risk Informed Completion Times (RICT) for the 120-Volt AC Instrument Bus Requirements
PNO-V-91-002, on 910303,Trojan Declared an Unsual Event & Initiated Plant Shutdown Due to Inability to Meet Requirements of TS 3.8.2.1,which Requires That Four 120 Volts AC Preferred Instrument Busses Be Operable
2CAN012403, Supplemental Information - Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4
NOC-AE-07002141, Resolution of Issues Regarding Proposed Amendment to Technical Specification 3/4.8.2 to Modify Requirements Related to Batteries and DC Systems
NOC-AE-06001994, Response to NRC Requests for Additional Information on STPNOC Proposed Risk-Informed Technical Specifications
L-2007-095, CFR 50.59 Summary Report, Changes, Tests, and Experiments Implemented as Allowed by 10 CFR 50.59 for the Period Covering June 13, 2005 Through December 9, 2006
05000498/LER-2023-001, Pressurizer Power Operated Relief Valve Failed to Open
05000029/LER-1989-011, :on 890725,potential Transformer Fuse Removed Resulting in Inadvertent Deenergization of 480 Volt Emergency Bus 1.Caused by Improper Tagging of Emergency Diesel Generator Sys.Procedure Developed
05000320/LER-1989-004-01, :on 890725,failure of 4160/480-volt Transformer Resulted in Action Statement Entry of Tech Spec 3.8.2.1.1. Caused by Degradation of Insulation on Windings on Primary Side.Power Restored to Bus 2-46 w/cross-tie
05000346/LER-1987-013, :on 871016,unit Lost Essential 120-volt Ac Bus Y2 Which Deenergized Four Sys & Placed Unit in Action Statements of Listed Tech Specs.Caused by Personnel Error. Technician Training Program Will Be Changed
05000412/LER-1987-022, :on 870921,emergency Diesel Generator 1 Automatically Started Due to Loss of Power to 2AE 4 Kv Emergency Bus.Caused by Faulty Connection Between tap-tap Block Combined W/Incorrect Ground Location
05000440/LER-1986-063, :on 860923,discovered That on 860918,Unit 1 Div 3 125-volt Dc Distribution Bus ED-1-C Disconnected from Unit 1 Div 3 Battery & Normal Charger & cross-connected to Unit 2 Div 3 Battery & Charger.Procedure Revised
05000423/LER-1986-036, :on 860519,facility Operating Under Tech Spec 3.8.2.1.b Action Statement W/Battery Bank 301a-2 Inoperable Due to Unperformed Mod to Battery Charger.Seismic Bracing Designed & Installed on Battery Charger
05000416/LER-1985-031, :on 850816,cell in Div 1 Battery Bank Found to Be Inoperable Based on 850813 Specific Gravity Measurements. Caused by Personnel Error.Surveillance Procedure Being Revised to Clarify When Battery Inoperable
05000440/LER-1987-008, :on 870218,div 1,class 1E 125 Volt Dc Battery Failed to Meet Allowable Electrolyte Temp of 72 F.Caused by Personnel Error & Faulty Thermostat.Procedure Reviewed & Thermostat Replaced
05000424/LER-1990-020-01, :on 900808,personnel Error Led to Tech Spec Violation
05000369/LER-1996-005-01, :on 961101,TS Required Shutdown of Both Units Due to Failed Surveillance Test of Vital Battery Evcc.Caused Is Unknown.Replaced & Retested Vital Battery Bank Evcc
05000328/LER-1988-025, :on 880603,determined That Tech Spec 3.0.3 Should Have Been Entered at Approx 2028 Edt.Caused by Delays Experienced During Performance of Surveillance Instruction 307.1.Training Ltr Issued
05000369/LER-1988-004-02, :on 880309,Tech Spec 3.0.3 Entered When Evcb Vital Battery Charger de-energized.Caused by Problem of Unknown Origin W/Power Supply Breakers for Vital Battery Charger.Investigation Completed
05000327/LER-1988-026-01, :on 880629,unit in Mode 5 When Diesel Standby Generators Received Emergency Start Signal.Caused by Undervoltage Condition on 6.9 Kv Shutdown Board 1B-B721 Resulting from Feeder Breaker Trip
05000373/LER-1996-014-05, :on 961030,480 Volt Safety Related Switchgear Breakers in Degraded Condition Due to Untimely Implementation of Previous Corrective Actions.Work Requests 960101523 & 960101525 Written for Repairs
05000369/LER-1996-005-04, :on 961101,TS Required Shutdown of Both Units Occurred Due to Failed Surveillance Test of Vital Battery Evcc.All Vital Battery Banks Will Be Replaced with Conventional Batteries by End of 2EOC11 Outage
05000413/LER-1985-039, :on 850523,spacers Required for Seismic Qualification of Channel 2 Vital Battery Bank 1EBB Not Reinstalled After Cells of Bank Replaced.Caused by Personnel Error.Spacers Replaced
05000498/LER-1996-001-01, :on 960328,Standby Diesel Generator Declared Inoperable.Caused by Barriers for Preparation & Planning Not Being Fully Implemented.Personnel Involved Counseled Re Event & Revised Preventive Maint Documents
05000302/LER-1992-002, :on 920327,leakage from Seal of Jacket Coolant Pump DJP-2 Increased to Approx 2-3 Gallons Per Minute.Caused by Inoperable EDG & Vital Bus Inverter.Leak Repaired & Preventive Maint Program Modified
05000346/LER-1983-061-03, /03L-0:on 831109,120-volt Ac Essential Instrumentation Panel Y2 Deenergized,Placing Unit in Action Statement of Tech Spec 3.8.2.1.Caused by Blown Main Fuse in Normal Power Supply Inverter YV2
05000362/LER-1983-106-01, /01L-0:on 830907,surveillance Testing Resulted in Unsatisfactory Float Voltage for Pilot Cells 11 & 13 & Unsatisfactory Total Battery Terminal Voltage.Caused by Personnel Error
05000369/LER-1991-012-01, :on 910823,vital Battery Surveillance Missed. Caused by Inappropriate Actions.Planning & Personnel Will Evaluate Changing Day of Wk Surveillance Performed to Ensure Appropriate Interaction
05000346/LER-1983-072-03, /03L-0:on 831217,120-volt Ac Essential Bus Y1, Reactor Protection Sys Channel 1 & Safety Features Actuation Sys Channel 1 Deenergized.Caused by Personnel Error. Personnel Counseled
05000334/LER-1983-015-03, /03L-0:on 830524,during Normal Power Operation, Relay 5I-VD106X Experienced Spurious Actuation,Causing Inadvertent Isolation of Emergency Bus 1DF from Normal Supply.Caused by Personnel Error
05000346/LER-1983-007-03, /03L-0:on 830131,loss of 120-volt Ac Essential Bus Y1 Experienced.Pressurizer Level Indication from LT-RC-14-3 Lost.Loss of Y1 Caused by Failure of YV1 Inverter Input Fuse.Root Cause Unknown
05000316/LER-1982-072-03, /03L-0:on 820824,reactor Trip Occurred as Result of Failure in 120-volt Ac Vital Bus.Caused by Burned Out Resistor (R1) & Diode (D1) on Oscillator Board & Associated Fuse.Oscillator Board & Fuse Replaced
05000335/LER-1982-041-03, /03L-0:on 820907,at 99% Power,Reactor/Turbine Trip Occurred Resulting in Brief Loss of Vital Buses & Iodine Spike.Caused by Motor Auxiliary Contact Initiating False Loss of Load & Inhibit Signals
05000327/LER-1990-027, :on 901017,LCO 3.0.3 Entered Due to Lack of Selective Coordination for Feeder Breakers
05000352/LER-1993-005-01, :on 930423,missed TS 3.8.2.1 Surveillance Requirement Due to Personnel Error During Procedure Rev. Procedures Revised
B14399, Responds to Request for Addl Info Re Insp Rept 50-336/92-22, Concerning Chronology of Knowledge on Pressurizer PORV Operating Characteristics
05000029/LER-1990-001, :on 900308,bus Tie Breaker Tripped Unexpectedly When Breaker for HPSI Pump Manually Tripped as Part of Surveillance Testing.Cause Could Not Be Determined.Crossbar Buffer Assembly Readjusted
U-601703, Proposed Tech Specs 4.0.5,3/4.4.3.1, RCS Leakage Detection Sys, 3/4.4.3.2, Operational Leakage, 3/4.8.3.1, Onsite Power Distribution Sys-Operating & 3/4.8.1.1, AC Sources - Operating
05000344/LER-1981-025-03, /03L-0:on 811104,power to Preferred Instrument Bus Y11 Lost for 1 Minute Due to Failure of Output Current Sensing Relay on Associated Static Inverter.Caused by Normal Relay end-of-life.Relay Replaced
05000344/LER-1981-025, Forwards LER 81-025/03L-0.Detailed Event Analysis Encl
05000344/LER-1981-021, Forwards LER 81-021/03L-0.Detailed Event Analysis Encl
05000346/LER-1981-052-03, /03L-0:on 810904,essential 4160-volt Ac Bus Ci Underwent Undervoltage Condition.Caused by Cleaning Personnel Inadvertently Bumping Control Switch on Breaker AC110,de-energizing C1 Bus.Bus Restored to Normal Lineup
05000311/LER-1981-071, Forwards LER 81-071/03L-0.Detailed Event Analysis Encl
05000335/LER-1982-040-03, /03L-0:on 820902,short Caused Generator Breakers to Open & Synchronizing Inhibit Timer to Start.Caused by Personnel Short Circuiting Relay During Generator Negative Sequence Relay Testing.Protection Design Reviewed
05000482/LER-1990-026, :on 901123,tech Spec Violation Occurred Re Safety Related Class IE Battery Bank Powered from Spare Battery Charger.Caused by Error in Safety Evaluation for Procedure Mce E051Q-01.Procedure Deleted
05000346/LER-1983-023-03, /03L-0:on 830510,120-volt Ac Essential Bus Y4 Lost,Resulting in Deenergizing Reactor Protection & Safety Features Actuation Sys Channel 4.Caused by Blown Fuse in Inverter YV4.Power Restored to Bus
05000311/LER-1981-071-03, /03X-1:on 810723,24 & 25,constant Speed Drive 22 Breaker Tripped from Unidentified Cause.Investigation Underway.Constant Speed Drive 21 Manually Closed
05000334/LER-1990-002, :on 900114,120-volt Ac Inverter for Vital Bus 3 Experienced Blown Dc Input Fuse When Inverter Bypassed & Aligned to 480-volt Ac Emergency Power.Caused by Mgt Action. Administrative Guidance Issued
05000311/LER-1981-028, Forwards LER 81-028/03L-0.Detailed Event Analysis Encl
05000461/LER-1989-041, :on 891122,unit Entered Tech Spec 3.0.3 When RCIC & HPCS Sys Inoperable Simultaneously for 37 Minutes. Chiller Condensing Unit Tripped Due to Low Refrigerant Pressure.Refrigerant in Chiller Recharged
05000302/LER-1981-021-03, /03L-0:on 810411,failure of Inverter D Resulted in Loss of Vital Bus VBDP-6.Caused by Shorted Diode & Blown Fuse Which May Have Resulted from Overheating in Inverter Cabinet.Diode & Fuse Replaced & Mod Procedure Revised
05000327/LER-1980-187-03, /03L-0:on 801118,found Vital Instrument Power Board 2-III Being Powered from Maint Power Supply.Caused by Failure of Vital Inverter 2-III.Inverter Restored
05000327/LER-1980-185-03, /03L-0:on 801111,output Breaker for Vital Inverter 1-I Tripped & Vital Instrument Power Board Declared Inoperable.Caused by Blown Output Fuses on Inverter.Fuses Replaced
05000346/LER-1980-081-03, /03L-0:on 801112,unit Experienced Loss of Essential Bus Y2.Caused by Use of Grounded Oscilloscope to Record Input Voltage Wave forms.YV2 Inverter Input Fuse Replaced & Essential 120-volt Ac Power Restored
05000346/LER-1980-086-03, /03L-0:on 801203,while Performing ST 5030.12, Alligator Clip Slipped Off Terminal Studs 3 & 4 Causing Short Circuit.Caused by Design Error.St 5030.12 Modified & F101 Fuse Replaced
05000327/LER-1980-076-03, /03L-0:on 800526,during Normal Operation,Output Circuit Breaker on Vital Inverter 2-I Tripped,Causing 120 Volt Ac Vital Instrument Power Board 2-I to Become Inoperable.Caused by Thermostat Being Out of Calibr
L-2023-107, Technical Specification Bases Control Program Periodic Report of Bases Changes TS 6.8.4.j.4
B16834, Application for Amend to License DPR-65,correcting Various TS Compliance Issues,Including Modifying Definition of Azimuthal Power Tilt,Changing Wording of SR 4.1.1.1.2 & Changing Applicability of TS 3.1.3.4
05000348/LER-1979-002-03, /03L-0 on 790116:120V Vital AC Bus 1B Was Deenergized When Inverter 1B Tripped Due to Components Failure.Capacitor,Air Core Choke,Resistor & Fuse Were Replaced & Inverter Returned to Svc
05000346/LER-1979-009-03, /03L-0:on 790112,power to Vital Bus Y2 Lost. False Integrated Control Sys Signal Resulted in Reactor & Full Steam & Feedwater Rupture Control Sys Trip.Caused by Blown 125 Volt DC Fuse to Inverter
05000346/LER-1979-011-03, /03L-0:on 790115,reactor Coolant Pump 1-2-2 Started W/Incorrect Breaker Alignment,Causing Low Voltage Relays to Trip Which de-energized Both 4.16 Kv Essential Buses C1 & D1.Caused by Personnel Error
05000346/LER-1978-125-03, /03L-0 on 781104:personnel Started Reactor Coolant Pump 1-1-2 Instead of 1-1-1 Causing Loss of Power of Essential Bus D1.Caused by Personnel Error & Design Deficiencies.Facility Change Requests Prepared
05000346/LER-1979-088-03, /03L-0:on 790807,supply Breaker for Essential Unit Substation Bus F1 Tripped de-energizing Bus.Caused by Electrical Fault in Baat Room Heater,Instituting Operation of Neutral Overcurrent Device
05000316/LER-2077-005, Re Failure of 600 Volt Buses to Be Energized by Emergency Diesel Generators Due to Personnel Error & Equipment Failure
LR-N980038, Application for Amends to Licenses DPR-70 & DPR-75, Respectively,Incorporating Note at Bottom of Salem Unit 2 T3/4.8.2 Into Salem 1 TS & Adding Asterisks to Word Inverters
LR-N970150, Application for Amends to Licenses DPR-70 & DPR-75, Correcting Editorial & Administrative Errors in Ts,Which Existed Since Initial Issuance
05000272/LER-1978-073, Forwards LER 78-073/01X-1.Detailed Event Analysis Encl
HNP-95-007, Provides Revised Version of CP&L Reply to NOV Submitted on 950106.Revised Response Corrects Date When Full Compliance Will Be Achieved Section of Original Response Ltr from 940331 to 950331
05000315/LER-1980-020-03, /03L-0:on 800831,during Normal Operation,Unit Trip & Train a Safety Injection & Steam Line Isolation Occurred. Caused by Shorted Diode in Crid 4 Inverter.All Diodes & Oscillator Boards Replaced,Tested & Returned to Svc
05000315/LER-1980-019-03, /03L-0:on 800811,while Performing Surveillance Re Tech Spec 3.8.2.1.1 Requirements for Inoperable Diesel Generator,Requirement 4.8.1.1.1a Was Not Performed.Caused by Inadequate Surveillance Procedures
05000529/LER-1994-004, :on 941006,class 1E Batteries Found in Degraded Condition.Caused by Step Decline in Capacity Caused by Loss of Positive Active Matl.Ts LCO 3.8.2.2 Action Was Entered to Prevent Positive Reactivity Additions
05000528/LER-1994-004, :on 941006,Train a Declared Inoperable Due to Projection of Test Results Indicated Battery Banks Did Not Meet 90% Criteria of TS SR 4.8.2.1.e.Caused by Loss of Positive Active Matl.Proposed TS Amend Submitted
GO2-90-036, Application for Amend to License NPF-21,revising Battery Load Profiles in Surveillance Requirement 4.8.2.1.d.2 to Reflect Results of Recent Reviews of Battery Capabilities
GO2-90-070, Application for Amend to License NPF-21,revising Tech Spec 3.8.2.1 to Reflect Plan to Add Addl Load to Battery During Spring 1990 Refueling Outage
L-2017-168, Response to Fourth Request for Additional Information Regarding License Amendment Request 236, Revision to the Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 1, Provide Risk-Informed
L-2017-006, Supplement to License Amendment Request 236, Revision to the Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 1, Provide Risk-Informed Extended Completion Times RITSTF Initiative 4b
05000368/LER-2014-001, Regarding Operation of Switchgear Rooms Ventilation Prohibited by Technical Specifications
05000336/LER-2012-001, Regarding Historical Gaps in High Energy Line Break Barrier
05000382/LER-2012-004, Regarding Essential Chiller Oil Leak Creates Unanalyzed Past Operability Condition
E910-05-028, Transmitting Saxton Nuclear Experimental Corporation (SNEC) 2004 Annual Report
05000382/LER-2008-004, Loose Intercell Connecting Bolts on 125 Vdc Station Battery
L-91-190, Application for Amends to Licenses DPR-31 & DPR-41,revising Surveillance Requirement on Battery Chargers
05000424/LER-1991-016-02, ,on 911223,cell of a Train Battery Failed to Meet TS Float Voltage Limit Due to Battery Aging.Replacement Cell to Be Installed & Precaution Added to single-cell Charging Procedure Triggering Notification
05000362/LER-1983-043-01, /01T-0:on 830708,train B Emergency Chiller E-335 Declared Inoperable,Rendering Equipment Inoperable in Rooms Where Chilled Water Provided.Caused by Control Circuitry or Mechanical Malfunction in Power Supply Breaker
2CAN112004, License Amendment Request - Application to Adopt a Safety Function Determination Program (SFDP)
SBK-L-21098, Supplement to License Amendment Request 21-01, Revise 120-Volt AC Vital Instrument Panel Requirements
B14788, Application for Amend to License DPR-65,revising TS Re ESFAS Instrumentaion
05000498/LER-2023-001-01, Supplement to Pressurizer Power Operated Valve Failed to Open
L-2016-084, Response to Request for Additional Information Regarding License Amendment Request for Adoption of Technical Specifications Task Force (TSTF) Traveler TSTF-422, Revision 2, Change in Technical Specifications End States
05000302/LER-1987-012, :on 870702,reactor Tripped Following Failure of Inverter a Feeding Vital Bus a Causing Downstream Transfer Switch to Transfer to Alternate Power Supply.Caused by Personnel Error.Tech Specs Will Be Revised
05000000/LER-1986-018-02, :on 860214,feedwater Isolation Due to hi-hi Level in Steam Generator a Occurred.Operating Procedures Revised to Include Caution Warning of Possible Feedwater Isolation When Opening MSIV
05000397/LER-1984-123, :on 841202,normal Div I Critical Switchgear Room Cooling Lost Due to Manual Shutdown Caused by Vibration of Fan Unit.All Div I Equipment Declared Inoperable.Fan Shaft Replaced & Bearings Installed
RA-20-0321, Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specifications to Adopt Technical Specifications Task Force (TSTF) Traveler TSTF-505, Revision 2, Provide Risk-Informed Extended Comple
L-2025-163, Supplement to RAI Response to Requests for Additional Information (Rais) Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Times - RITSTF Initiative 4b, and 10 CFR 50.69
L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69.