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	Issue date	Title	Topic
PNO-I-99-026A, on 990518,main Transformer Was Damaged During Testing of Replacement Bushing While Unit Was in Refueling Outage.Current Refueling Outage Was Originally Scheduled to Be Completed on 990607,with Return to Full Power Operation	1 June 1999	PNO-I-99-026A:on 990518,main Transformer Was Damaged During Testing of Replacement Bushing While Unit Was in Refueling Outage.Current Refueling Outage Was Originally Scheduled to Be Completed on 990607,with Return to Full Power Operation
PNO-I-99-026, on 990518,fire Occurred at Pilgrim Station in Main Electrical Transformer.Licensee Requested off-site Firefighting Assistance.Resident Inspector Responded to Site Upon Notification of Event.Licensee Issued Press Release	19 May 1999	PNO-I-99-026:on 990518,fire Occurred at Pilgrim Station in Main Electrical Transformer.Licensee Requested off-site Firefighting Assistance.Resident Inspector Responded to Site Upon Notification of Event.Licensee Issued Press Release
PNO-I-97-072, on 971123,operators Initiated Plant Shutdown When Main Steam Isolation Valves AO-203-1C & AO-203-2B Were Declared Inoperable During Surveillance Test	24 November 1997	PNO-I-97-072:on 971123,operators Initiated Plant Shutdown When Main Steam Isolation Valves AO-203-1C & AO-203-2B Were Declared Inoperable During Surveillance Test	Stroke time
PNO-I-97-061, on 970922,util Informed Region I of Receipt of Internal Nuclear Safety Concern Potentially Involving Instance of Falsification of Control Room Log in 1989.Formal Investigation Initiated & Press Release Issued	23 September 1997	PNO-I-97-061:on 970922,util Informed Region I of Receipt of Internal Nuclear Safety Concern Potentially Involving Instance of Falsification of Control Room Log in 1989.Formal Investigation Initiated & Press Release Issued
PNO-I-97-053, on 970826,special Security Insp Will Be Performed,That Will Examine Security Activities at Vermont Yankee,Pilgrim & Indian Point 3.Team Will Include Security Specialists from Region I & NRR	22 August 1997	PNO-I-97-053:on 970826,special Security Insp Will Be Performed,That Will Examine Security Activities at Vermont Yankee,Pilgrim & Indian Point 3.Team Will Include Security Specialists from Region I & NRR
PNO-I-97-019, on 970401,declared Unusual Event at Pilgrim Nuclear Power Station,Due to Inability to Provide Offsite Electrical Power to Safety Related Electrical Busses.Loss of Offsite Electrical Power Resulted from Faults on Lines	2 April 1997	PNO-I-97-019:on 970401,declared Unusual Event at Pilgrim Nuclear Power Station,Due to Inability to Provide Offsite Electrical Power to Safety Related Electrical Busses.Loss of Offsite Electrical Power Resulted from Faults on Lines	High winds
PNO-I-93-066, on 931207,licensee Security Representative in Technical Support Ctr Notified NRC Region I That Actual Demonstration Taking Place in Downtown Plymonth.No Other Interference W/Exercise Activities Identified	7 December 1993	PNO-I-93-066:on 931207,licensee Security Representative in Technical Support Ctr Notified NRC Region I That Actual Demonstration Taking Place in Downtown Plymonth.No Other Interference W/Exercise Activities Identified
PNO-I-93-066A, demonstration to Protest Inadequacy of Plant Emergency Plan Ended About 2:00 Pm.Three Stink Bombs Introduced Into Media Center Ventilation Sys,But Did Not Interrupt Activities.No Other Untoward Occurrences Reported	7 December 1993	PNO-I-93-066A:demonstration to Protest Inadequacy of Plant Emergency Plan Ended About 2:00 Pm.Three Stink Bombs Introduced Into Media Center Ventilation Sys,But Did Not Interrupt Activities.No Other Untoward Occurrences Reported
PNO-I-93-052, on 930910,lightning Strike in Switchyard Resulted in Loss of Both 345 Kv Supply Lines to Site.Reactor Tripped as Expected.All Sys Responded as Designed,Offsite Power Reestablished within 11 Minutes	10 September 1993	PNO-I-93-052:on 930910,lightning Strike in Switchyard Resulted in Loss of Both 345 Kv Supply Lines to Site.Reactor Tripped as Expected.All Sys Responded as Designed,Offsite Power Reestablished within 11 Minutes
PNO-I-91-046, on 910626,irradiated Fuel Bundle Became Degrappled from Refuel Bridge Handling Device.Caused by Grapple Mechanism Failure to Unlatch Fuel Bundle.All Fuel Movement Operations Secured	26 June 1991	PNO-I-91-046:on 910626,irradiated Fuel Bundle Became Degrappled from Refuel Bridge Handling Device.Caused by Grapple Mechanism Failure to Unlatch Fuel Bundle.All Fuel Movement Operations Secured
PNO-I-90-095, on 901031,radioactive Matl Transported Offsite as Nonradioactive Matl	1 November 1990	PNO-I-90-095:on 901031,radioactive Matl Transported Offsite as Nonradioactive Matl
PNO-I-90-076, on 900902,licensee Initiated Manual Reactor Scram to Preclude Anticipated Automatic Scram Due to Increasing Reactor Vessel Water Level.Licensee Established Multidisciplinary Analysis Team to Evaluate Reactor Scram	5 September 1990	PNO-I-90-076:on 900902,licensee Initiated Manual Reactor Scram to Preclude Anticipated Automatic Scram Due to Increasing Reactor Vessel Water Level.Licensee Established Multidisciplinary Analysis Team to Evaluate Reactor Scram	Reactor Vessel Water Level
PNO-I-90-053, on 900703,util Declared Unusual Event Following 900702 Tripping of Recirculation Pump Motor Generator Due to Generator Lockout.Reactor Power Reduced to Approx 30% & Reactor Scram Initiated.Commonwealth of Ma Notified	3 July 1990	PNO-I-90-053:on 900703,util Declared Unusual Event Following 900702 Tripping of Recirculation Pump Motor Generator Due to Generator Lockout.Reactor Power Reduced to Approx 30% & Reactor Scram Initiated.Commonwealth of Ma Notified
ML20247C971	18 July 1989	PNO-89-059:on 890718,reactor Manually Tripped from 50% Power After Loss of Air Ejectors Caused Decreased Condenser Vacuum Condition.Cause of Failure Not Immediately Evident,However Air Ejectors Shifted Due to Slightly Degraded Vacuum
PNO-I-89-049, on 890626,WT Russell Approved NRC Restart Assessment Panel Recommendation to Release Licensee from Third NRC Approval Point in Licensee Power Ascension Test Program.Testing Activities Scheduled for Next Phase	26 June 1989	PNO-I-89-049:on 890626,WT Russell Approved NRC Restart Assessment Panel Recommendation to Release Licensee from Third NRC Approval Point in Licensee Power Ascension Test Program.Testing Activities Scheduled for Next Phase
ML20245D007	19 June 1989	PNS-I-89-009:on 890619,unidentified Male Scaled Outer Fence Around Plant & Chained to Outside of Protected Area Fence. Individual Arrested.Individual Claimed to Be Part of Massachusetts Public Interest Research Group
PNO-I-89-027, on 890412,RCIC Injection Valves Unexpectedly Opened During Testing of Sys Logic.Discharge Check Valve Failure Also Allowed Feedwater Backleakage,Contaminating Five Workers Slightly.Augmented Insp Team Dispatched	13 April 1989	PNO-I-89-027:on 890412,RCIC Injection Valves Unexpectedly Opened During Testing of Sys Logic.Discharge Check Valve Failure Also Allowed Feedwater Backleakage,Contaminating Five Workers Slightly.Augmented Insp Team Dispatched
ML20248H931	6 April 1989	PNS-I-89-002:on 890405,telephone Call Received by Licensee, Indicating That Bomb Was on Site.Security Force Responded by Implementing Bomb Threat Contingency Procedure.Nothing Suspicious Found.Threat Considered to Be Hoax
PNO-I-89-016, on 890303,JM Allan Approved NRC Restart Assessment Panel Recommendation to Release Licensee from Second Approval Point in Power Ascension Test Program. Testing Activities for Next Phase Stated	3 March 1989	PNO-I-89-016:on 890303,JM Allan Approved NRC Restart Assessment Panel Recommendation to Release Licensee from Second Approval Point in Power Ascension Test Program. Testing Activities for Next Phase Stated
PNO-I-89-010, on 890221,startup Transformer Tripped & Locked Out on Ground Differential Relay Actuation.Licensee Investigating Cause.Decay Heat Minimal & Reactor Water Temp Decreased About 1 F in First 3 H After Loss of Power	21 February 1989	PNO-I-89-010:on 890221,startup Transformer Tripped & Locked Out on Ground Differential Relay Actuation.Licensee Investigating Cause.Decay Heat Minimal & Reactor Water Temp Decreased About 1 F in First 3 H After Loss of Power
PNO-I-88-116, on 881108,voters Voted Down state-wide Referendum to Shutdown Plants in State of Ma If Nuclear Waste Produced in Process	9 November 1988	PNO-I-88-116:on 881108,voters Voted Down state-wide Referendum to Shutdown Plants in State of Ma If Nuclear Waste Produced in Process
PNO-I-88-058, on 880527,util Mgt Halted Performance of General Maint at Facility.Licensee self-assessment Completed on 880526 Identified Maint Program Weaknesses.Addl Maint Tasks Being Reviewed on case-by-case Basis	27 May 1988	PNO-I-88-058:on 880527,util Mgt Halted Performance of General Maint at Facility.Licensee self-assessment Completed on 880526 Identified Maint Program Weaknesses.Addl Maint Tasks Being Reviewed on case-by-case Basis
PNO-I-88-019, on 880211,fire in Contaminated Area of Machine Shop Discovered.Fire Identified as Burning Insulation from heat-treating Machine Being Used on Valve Disc in Shop.Fire Extinguished.No Spread of Contamination from Area Occurred	12 February 1988	PNO-I-88-019:on 880211,fire in Contaminated Area of Machine Shop Discovered.Fire Identified as Burning Insulation from heat-treating Machine Being Used on Valve Disc in Shop.Fire Extinguished.No Spread of Contamination from Area Occurred
PNO-I-87-105B, on 871112,offsite Power Reestablished to Vital & Nonvital Buses Via Backfeeding Through Main & Auxiliary Transformers After Loss of Power.Loss of Power Possibly Caused by Icing in Switchyard.Switchyard Sprayed	13 November 1987	PNO-I-87-105B:on 871112,offsite Power Reestablished to Vital & Nonvital Buses Via Backfeeding Through Main & Auxiliary Transformers After Loss of Power.Loss of Power Possibly Caused by Icing in Switchyard.Switchyard Sprayed
PNO-I-87-106, NRC Dispatched Augmented Insp Team to Facility to Commence Insp on 871115.Insp Will Focus on Sequence of Events & Licensees Response Re 871112 Loss of Offsite Power. Team Expected Onsite 871115-20	13 November 1987	PNO-I-87-106:NRC Dispatched Augmented Insp Team to Facility to Commence Insp on 871115.Insp Will Focus on Sequence of Events & Licensees Response Re 871112 Loss of Offsite Power. Team Expected Onsite 871115-20
PNO-I-87-105A, as of 871112,offsite Power Remained Unavailable to Site.Personnel Shutdown Emergency Diesel Generator B Due to Problem W/Transformer C,Resulting in Another Shutdown Cooling Isolation.Switchyards Sprayed	12 November 1987	PNO-I-87-105A:as of 871112,offsite Power Remained Unavailable to Site.Personnel Shutdown Emergency Diesel Generator B Due to Problem W/Transformer C,Resulting in Another Shutdown Cooling Isolation.Switchyards Sprayed
PNO-I-87-105, on 871112,plant Experienced Complete Loss of Offsite Power.Cause Associated W/Switchyard Icing Due to Adverse Weather Conditions.Licensee Continuing to Determine Cause of Loss of Offsite Power.Ice & Salt Being Removed	12 November 1987	PNO-I-87-105:on 871112,plant Experienced Complete Loss of Offsite Power.Cause Associated W/Switchyard Icing Due to Adverse Weather Conditions.Licensee Continuing to Determine Cause of Loss of Offsite Power.Ice & Salt Being Removed
PNO-I-87-104A, on 871108,normally Locked High Radiation Barrier Leading to Refueling Floor Was Found W/Locking Mechanism Taped Over.Info Serves as Update to PNO-I-87-104, Discussing Licensee Decision to Stop Work at Plant	10 November 1987	PNO-I-87-104A:on 871108,normally Locked High Radiation Barrier Leading to Refueling Floor Was Found W/Locking Mechanism Taped Over.Info Serves as Update to PNO-I-87-104, Discussing Licensee Decision to Stop Work at Plant
PNO-I-87-104, on 871107 & 08,util Identified Potential Breach of Security Vital Area Barrier & Series of Radiological Problems.Ongoing Maint & Mod Work Onsite Suspended.Licensee Presently Evaluating Situation	9 November 1987	PNO-I-87-104:on 871107 & 08,util Identified Potential Breach of Security Vital Area Barrier & Series of Radiological Problems.Ongoing Maint & Mod Work Onsite Suspended.Licensee Presently Evaluating Situation	Hydrostatic Locked High Radiation Area
PNO-I-87-095, on 871015,State of Ma Atty General Jm Shannon Filed Petition Requesting Order to Show Cause Why Plant Should Not Remain Closed Until Full Adjudicatory Hearing Resolves Issues Re GE Mark I Containment & Evacuation Plans	16 October 1987	PNO-I-87-095:on 871015,State of Ma Atty General Jm Shannon Filed Petition Requesting Order to Show Cause Why Plant Should Not Remain Closed Until Full Adjudicatory Hearing Resolves Issues Re GE Mark I Containment & Evacuation Plans
PNO-I-87-090, on 870926-27,util Scheduled to Start Reloading Fuel Into Core of Plant.Plant Shutdown Since Apr 1986 for Maint & Program Improvements.Licensee Required to Obtain NRC Approval Before Restart of Reactor	25 September 1987	PNO-I-87-090:on 870926-27,util Scheduled to Start Reloading Fuel Into Core of Plant.Plant Shutdown Since Apr 1986 for Maint & Program Improvements.Licensee Required to Obtain NRC Approval Before Restart of Reactor
ML20238D859	8 September 1987	PNS-I-87-015:on 870905,four Males Found in Owner Controlled Area Adjacent to Protected Area Barrier.Individuals Arrested & Charged W/Trespassing.No Indication Found That Protected Area Perimeter Barrier Breached by Individuals	Contraband
PNO-I-87-069, corrects & Updates Info Contained in 870728 PNO-I-87-068 Re 870727 Apparent Contamination of Worker W/ Radium.Licensee Subsequently Determined That Worker Contaminated w/Pm-147.Clean-up Will Be Performed by Worker	30 July 1987	PNO-I-87-069:corrects & Updates Info Contained in 870728 PNO-I-87-068 Re 870727 Apparent Contamination of Worker W/ Radium.Licensee Subsequently Determined That Worker Contaminated w/Pm-147.Clean-up Will Be Performed by Worker
PNO-I-87-068, on 870727,contractor Worker Found to Be Radioactively Contaminated W/Radium.Caused by Worker Attempt to Remove Radium from Watch Dial.Licensee Decontaminated Worker & Furnished Other Health Physics Assistance	28 July 1987	PNO-I-87-068:on 870727,contractor Worker Found to Be Radioactively Contaminated W/Radium.Caused by Worker Attempt to Remove Radium from Watch Dial.Licensee Decontaminated Worker & Furnished Other Health Physics Assistance
PNO-I-87-003, on 861224,health Physics Technician Found Dead at Residence.On 870127,cause Determined to Be drug-related. Facility Drug Surveillance Increased & Fitness for Duty Policy Revised	21 January 1987	PNO-I-87-003:on 861224,health Physics Technician Found Dead at Residence.On 870127,cause Determined to Be drug-related. Facility Drug Surveillance Increased & Fitness for Duty Policy Revised	Fitness for Duty
PNO-I-86-092, on 861119 All Offsite Power Lost.Caused by Heavy Storm & High Winds in Site Vicinity.Onsite Available Diesel Fuel Supplies Sufficient to Operate Diesels in Excess of 100 H	19 November 1986	PNO-I-86-092:on 861119 All Offsite Power Lost.Caused by Heavy Storm & High Winds in Site Vicinity.Onsite Available Diesel Fuel Supplies Sufficient to Operate Diesels in Excess of 100 H	High winds
ML20214F520	19 November 1986	Updated PNO-I-86-092A:on 861119,offsite Power Supplies Restored.Cause Not Determined.Monthly Full Load Surveillance of Diesel Generators Performed to Remove Carbon Deposits. Investigation Continuing
ML20212N991	27 August 1986	PNS-I-86-014:on 860826,bomb Threat Received at Util.Bomb Search Procedures & Enhanced Security Measures Immediately Implemented.Search Yielded Negative Reults.Fbi & Commonwealth of Ma Notified
ML20212N558	25 August 1986	PNS-I-86-013:on 860824,Boston Globe Newspaper Received Bomb Threat Re Plants.Police Notified & Bomb Search Procedures Instituted W/Negative Results
PNO-I-86-057, projected Startup Date Extended to Early 1987 for Performance of Three Addl Tasks Re Fire Protection Mods, Installation of Primary Containment Structure Enhancements & Reactor Refueling.Plant Shut Down Since 860412	25 July 1986	PNO-I-86-057:projected Startup Date Extended to Early 1987 for Performance of Three Addl Tasks Re Fire Protection Mods, Installation of Primary Containment Structure Enhancements & Reactor Refueling.Plant Shut Down Since 860412