05000528/LER-1987-001, :on 870203,control Room Essential Filtration Actuation Signal Actuated on Channels a & B.Caused by Voltage Spike.Setpoints Readjusted to Be Consistent W/Tech Specs

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:on 870203,control Room Essential Filtration Actuation Signal Actuated on Channels a & B.Caused by Voltage Spike.Setpoints Readjusted to Be Consistent W/Tech Specs
Person / Time
ML20207Q877
Site:	Palo Verde
Issue date:	03/02/1987
From:	Bradish T, Haynes J ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
ANPP-00152-JGH, ANPP-152-JGH, LER-87-001, LER-87-1, NUDOCS 8703100132
Download: ML20207Q877 (4)
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LER-1987-001, on 870203,control Room Essential Filtration Actuation Signal Actuated on Channels a & B.Caused by Voltage Spike.Setpoints Readjusted to Be Consistent W/Tech Specs

Event date:
Report date:
5281987001R00 - NRC Website
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text

Licensee Event Report

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		Reporting criterion
05000529/LER-1987-001-01, :on 870208,control Room Ventilation Intake Noble Gas Monitors RU-29 & RU-30 Discovered Inoperable W/O Appropriate Action Statement Being Entered within Required Time Frame.Caused by Personnel Error	on 870208,control Room Ventilation Intake Noble Gas Monitors RU-29 & RU-30 Discovered Inoperable W/O Appropriate Action Statement Being Entered within Required Time Frame.Caused by Personnel Error
05000530/LER-1987-001-02, :on 870328,while Preparing to Enter Mode 6, Control Room Essential Filtration Actuation Signals & Containment Purge Isolation Actuation Signals Received.Cause Under Investigation	on 870328,while Preparing to Enter Mode 6, Control Room Essential Filtration Actuation Signals & Containment Purge Isolation Actuation Signals Received.Cause Under Investigation	10 CFR 50.73(e)(2)
05000528/LER-1987-001, :on 870203,control Room Essential Filtration Actuation Signal Actuated on Channels a & B.Caused by Voltage Spike.Setpoints Readjusted to Be Consistent W/Tech Specs	on 870203,control Room Essential Filtration Actuation Signal Actuated on Channels a & B.Caused by Voltage Spike.Setpoints Readjusted to Be Consistent W/Tech Specs
05000530/LER-1987-002-02, :on 870615,control Room Essential Filtration Actuation Signals & Containment Purge Isolation Actuation Signals Received on Both Channels of balance-of-plant Esfas. Cause Under Investigation	on 870615,control Room Essential Filtration Actuation Signals & Containment Purge Isolation Actuation Signals Received on Both Channels of balance-of-plant Esfas. Cause Under Investigation
05000529/LER-1987-002-01, :on 870320,Class 1E Train B Bank of Pressurizer Backup Heaters Could Not Be Energized from Control Room,Per Tech Spec Requirement.Caused by Malfunction of Heater Breaker & Personnel Error.Breaker Replaced	on 870320,Class 1E Train B Bank of Pressurizer Backup Heaters Could Not Be Energized from Control Room,Per Tech Spec Requirement.Caused by Malfunction of Heater Breaker & Personnel Error.Breaker Replaced	10 CFR 50.73(e)(2)
05000528/LER-1987-002, :on 870317,continuous Fire Watch Not Established within Required Time,Per Tech Spec 3.7.11.2 Action A.Caused by Personnel Error.Fire Protection Personnel Counseled on Importance of Proper Performance	on 870317,continuous Fire Watch Not Established within Required Time,Per Tech Spec 3.7.11.2 Action A.Caused by Personnel Error.Fire Protection Personnel Counseled on Importance of Proper Performance
05000530/LER-1987-002, :on 870615,control Room Essential Filtration & Containment Purge Isolation Actuation Signals Received on Both Channels of Balance of Plant Esfas.Caused by Calibr of Static Transfer Switch.Switch Recalibr	on 870615,control Room Essential Filtration & Containment Purge Isolation Actuation Signals Received on Both Channels of Balance of Plant Esfas.Caused by Calibr of Static Transfer Switch.Switch Recalibr	10 CFR 50.73(e)(2)
05000528/LER-1987-003, :on 870110,reactor Power Cutback Occurred Due to Load Rejection Resulting in Reactor Trip.Caused by Cognitive Personnel Error.Night Order Issued to Discuss Desirable Strategy During Feedwater Transient	on 870110,reactor Power Cutback Occurred Due to Load Rejection Resulting in Reactor Trip.Caused by Cognitive Personnel Error.Night Order Issued to Discuss Desirable Strategy During Feedwater Transient
05000530/LER-1987-003-02, :on 870929,condition Identified That,If Not Corrected,Could Have Resulted in Improper Operation of Two Shutdown Cooling Isolation Valves in Redundant Trains.Caused by Vendor Error.Bolting Replaced	on 870929,condition Identified That,If Not Corrected,Could Have Resulted in Improper Operation of Two Shutdown Cooling Isolation Valves in Redundant Trains.Caused by Vendor Error.Bolting Replaced	10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(c)(2) 10 CFR 21.21(b)(3)
05000529/LER-1987-004-01, :on 870416,reactor & Turbine Trip Occurred. Caused by High Local Power Density Trip Signals Generated by Core Protection Calculators.Effects of Cycling Each Breaker Will Be Incorporated Into Guidelines	on 870416,reactor & Turbine Trip Occurred. Caused by High Local Power Density Trip Signals Generated by Core Protection Calculators.Effects of Cycling Each Breaker Will Be Incorporated Into Guidelines	10 CFR 50.73(e)(2)
05000528/LER-1987-004, :on 870323,discovered That Spectrum Analysis Not Done for Three Grab Samples Taken on 870320 from Turbine Bldg Sump & Condenser Area Sump.Caused by Personnel Error. Event Discussed W/Chemistry Personnel	on 870323,discovered That Spectrum Analysis Not Done for Three Grab Samples Taken on 870320 from Turbine Bldg Sump & Condenser Area Sump.Caused by Personnel Error. Event Discussed W/Chemistry Personnel	10 CFR 50.73(e)(2)
05000530/LER-1987-004-02, :on 871217,w/reactor at 50% Test Plateau During Power Ascension Testing,Reactor Trip Occurred.Caused by Malfunctioning Logic Sequencer Card in Control Element Drive Mechanism Control Sys.Card Replaced	on 871217,w/reactor at 50% Test Plateau During Power Ascension Testing,Reactor Trip Occurred.Caused by Malfunctioning Logic Sequencer Card in Control Element Drive Mechanism Control Sys.Card Replaced
05000530/LER-1987-005-02, :on 871030,while Unit in Mode 3,main Steam Isolation Sys Automatically Actuated.Caused by Faulty Logic Card for MSIV-170.Faulty Logic Card Replaced	on 871030,while Unit in Mode 3,main Steam Isolation Sys Automatically Actuated.Caused by Faulty Logic Card for MSIV-170.Faulty Logic Card Replaced	10 CFR 50.73(r)(2)
05000528/LER-1987-005-01, :on 870302,while Unit in Mode 4,hourly Fire Watch Patrol Not Performed in Accordance W/Tech Spec 3.7.12. Caused by Cognitive Personnel Error.Foreman Disciplined & Instructed on Importance of Fire Watches	on 870302,while Unit in Mode 4,hourly Fire Watch Patrol Not Performed in Accordance W/Tech Spec 3.7.12. Caused by Cognitive Personnel Error.Foreman Disciplined & Instructed on Importance of Fire Watches
05000529/LER-1987-005, :on 870305,fire Patrol for Control Diesel Generator & Main Steam Support Structure Performed Late. Caused by Malfunctioning Access Door to Main Steam Support Structure.Door Returned to Svc	on 870305,fire Patrol for Control Diesel Generator & Main Steam Support Structure Performed Late. Caused by Malfunctioning Access Door to Main Steam Support Structure.Door Returned to Svc
05000528/LER-1987-006, :on 870304,Limiting Condition for Operation 3.0.3 Entered Five Times Due to Inoperable Msivs.Caused by Fact That Sys Design Does Not Allow Tech Spec Action Statement to Be Met.Tech Spec Change Issued	on 870304,Limiting Condition for Operation 3.0.3 Entered Five Times Due to Inoperable Msivs.Caused by Fact That Sys Design Does Not Allow Tech Spec Action Statement to Be Met.Tech Spec Change Issued
05000529/LER-1987-006-01, :on 870307,during Surveillance Test,Limiting Condition for Operation 3.0.3 Entered When Tech Spec 3/4.6.3 Action Statements Could Not Be Met.Caused by Inoperability of Msivs.Tech Spec Change Request Submitted	on 870307,during Surveillance Test,Limiting Condition for Operation 3.0.3 Entered When Tech Spec 3/4.6.3 Action Statements Could Not Be Met.Caused by Inoperability of Msivs.Tech Spec Change Request Submitted
05000528/LER-1987-007, :on 870120,Tech Spec 3.3.2,Table 3.3-3 Requirement Not Met.Caused by Entry Into Limiting Condition for Operation 3.0.3 to Avoid ESF Actuation.Tech Spec Change Request to Allow Trip in Mode 4 Initiated	on 870120,Tech Spec 3.3.2,Table 3.3-3 Requirement Not Met.Caused by Entry Into Limiting Condition for Operation 3.0.3 to Avoid ESF Actuation.Tech Spec Change Request to Allow Trip in Mode 4 Initiated
05000529/LER-1987-007-01, :on 870423,time Interval for Sampling Concentration of Hydrogen & Oxygen in Gaseous Radwaste Sys Exceeded,Contrary to Tech Spec 3.3.3.9.Caused by Cognitive Personnel Error.New Form Used to Aid Personnel	on 870423,time Interval for Sampling Concentration of Hydrogen & Oxygen in Gaseous Radwaste Sys Exceeded,Contrary to Tech Spec 3.3.3.9.Caused by Cognitive Personnel Error.New Form Used to Aid Personnel
05000528/LER-1987-008, :on 870314,fire Patrol Performed Six Hours Late Due to Log Omission.Caused by Cognitive Personnel Error.Fire Protection Technician Counseled on Area of Responsibility	on 870314,fire Patrol Performed Six Hours Late Due to Log Omission.Caused by Cognitive Personnel Error.Fire Protection Technician Counseled on Area of Responsibility
05000528/LER-1987-009-01, :on 870604,inadvertent Control Room Essential Filtration Actuation Occurred Due to Radiation Monitor Pump Cycling.Caused by Motor Drawing Too Much Current.Ground to Motor & Radiation Monitor Separated	on 870604,inadvertent Control Room Essential Filtration Actuation Occurred Due to Radiation Monitor Pump Cycling.Caused by Motor Drawing Too Much Current.Ground to Motor & Radiation Monitor Separated
05000528/LER-1987-010, :on 870325,while in Mode 1,discovered That Daily Chemistry Samples Not Taken on 870323 for Turbine Bldg & Condenser Area Sumps.Caused by Personnel Error.Briefing Sessions Held W/Workers.Sample Form Developed	on 870325,while in Mode 1,discovered That Daily Chemistry Samples Not Taken on 870323 for Turbine Bldg & Condenser Area Sumps.Caused by Personnel Error.Briefing Sessions Held W/Workers.Sample Form Developed
05000528/LER-1987-011, :on 870331,while in Mode 1,fire Watch Round Not Performed Per Tech Spec 3.7.12.Caused by Cognitive Personnel Error.Fire Watch Patrolman Counseled on Safety Warnings & Scheduled for Addl Training	on 870331,while in Mode 1,fire Watch Round Not Performed Per Tech Spec 3.7.12.Caused by Cognitive Personnel Error.Fire Watch Patrolman Counseled on Safety Warnings & Scheduled for Addl Training
05000529/LER-1987-012-01, :on 870716,discovered That Time Interval for Performance of Tech Spec Surveillance Requirement 4.6.1.3.b.1 Exceeded on 870102.Caused by Error in Approved Procedure.Procedure to Be Revised	on 870716,discovered That Time Interval for Performance of Tech Spec Surveillance Requirement 4.6.1.3.b.1 Exceeded on 870102.Caused by Error in Approved Procedure.Procedure to Be Revised	10 CFR 50.73(e)(2)
05000528/LER-1987-013, :on 870408,Tech Spec 3.0.3 Entered Due to Inoperability of ESF Pump Room Air Exhaust Sys.Caused by Cognitive Personnel Error.Memo Sent to Onsite Managers Reminding Personnel of Responsibilities	on 870408,Tech Spec 3.0.3 Entered Due to Inoperability of ESF Pump Room Air Exhaust Sys.Caused by Cognitive Personnel Error.Memo Sent to Onsite Managers Reminding Personnel of Responsibilities
05000529/LER-1987-013-01, :on 870510,shutdown Commenced Per Tech Spec 3.8.3.1 Due to Inoperable Inverter.Caused by Loose Silicon Controlled Rectifier (Scr).Loose SCR Replaced & Other SCRs Retorqued	on 870510,shutdown Commenced Per Tech Spec 3.8.3.1 Due to Inoperable Inverter.Caused by Loose Silicon Controlled Rectifier (Scr).Loose SCR Replaced & Other SCRs Retorqued
05000529/LER-1987-014-01, :on 870605,discovered That Auxiliary Sample Cart in Svc as Backup to Fuel Bldg Ventilation Radiation Monitor Turned Off & Inoperable.Caused by Personnel Error. Radiation Protection Technician Terminated	on 870605,discovered That Auxiliary Sample Cart in Svc as Backup to Fuel Bldg Ventilation Radiation Monitor Turned Off & Inoperable.Caused by Personnel Error. Radiation Protection Technician Terminated
05000529/LER-1987-015, :on 870816,control Room Essential Filtration Actuation Initiated on ESFAS Channels a & B.Caused by Voltage Spike on RU-30.Monitor Reset,Train B Returned to Svc & Procedural Change Initiated	on 870816,control Room Essential Filtration Actuation Initiated on ESFAS Channels a & B.Caused by Voltage Spike on RU-30.Monitor Reset,Train B Returned to Svc & Procedural Change Initiated	10 CFR 50.73(c)(2) 10 CFR 50.73(r)(2)
05000529/LER-1987-016-01, :on 870718,contents of Chemical Waste Neutralization Tank Released to Onsite Evaporation Pond Exceeding Tech Spec 3.11.1.1 Limit for Mo-99.Caused by Personnel Error.Briefing Session Planned	on 870718,contents of Chemical Waste Neutralization Tank Released to Onsite Evaporation Pond Exceeding Tech Spec 3.11.1.1 Limit for Mo-99.Caused by Personnel Error.Briefing Session Planned	10 CFR 50.73(e)(2)
05000528/LER-1987-016, :on 870609,both Trains of ESF Pump Room Air Exhaust Cleanup Sys Inoperable.Caused by Personnel Error. Operations Dept Experience Rept & Night Orders Developed & Issued & Warning Tags Placed on Equipment	on 870609,both Trains of ESF Pump Room Air Exhaust Cleanup Sys Inoperable.Caused by Personnel Error. Operations Dept Experience Rept & Night Orders Developed & Issued & Warning Tags Placed on Equipment	10 CFR 50.73(c)(2) 10 CFR 50.73(e)(2)
05000528/LER-1987-017-01, :on 870630,auxiliary Operator Entered High Radiation Area W/O Radiation Monitoring Devices Required by Tech Specs.Caused by Personnel Error.Exposure within 10CFR20 Limits.Disciplinary Action Taken	on 870630,auxiliary Operator Entered High Radiation Area W/O Radiation Monitoring Devices Required by Tech Specs.Caused by Personnel Error.Exposure within 10CFR20 Limits.Disciplinary Action Taken
05000529/LER-1987-017, :on 870608,discovered That 4-h Samples of Gaseous Radwaste Sys Had Not Been Taken as Required.Caused by Improper Communication Between Chemist & Control Room Operator.Night Order Initiated	on 870608,discovered That 4-h Samples of Gaseous Radwaste Sys Had Not Been Taken as Required.Caused by Improper Communication Between Chemist & Control Room Operator.Night Order Initiated	10 CFR 50.73(e)(2)
05000528/LER-1987-018, :on 870827,reactor Trip Occurred Due to Axial Shape Index of Reactor Core.Caused by Deficient Procedure. Procedural Enhancements Implemented	on 870827,reactor Trip Occurred Due to Axial Shape Index of Reactor Core.Caused by Deficient Procedure. Procedural Enhancements Implemented
05000529/LER-1987-018-01, :on 871004,ESF Signal Initiated on Train B & cross-tripped Train a as Designed.Caused by Spurious Signal Due to Voltage Spike Caused by Electronic Noise.Plant Change Package Initiated	on 871004,ESF Signal Initiated on Train B & cross-tripped Train a as Designed.Caused by Spurious Signal Due to Voltage Spike Caused by Electronic Noise.Plant Change Package Initiated	10 CFR 50.73(e)(2)
05000529/LER-1987-019, :on 871122,reactor Trip Occurred Due to Core Axial Shape Index Out of Bounds.Caused by Deficient Procedure & Faulty Contact.Procedural Enhancements Initiated & Faulty Contact Replaced	on 871122,reactor Trip Occurred Due to Core Axial Shape Index Out of Bounds.Caused by Deficient Procedure & Faulty Contact.Procedural Enhancements Initiated & Faulty Contact Replaced	10 CFR 50.73(c)(2)
05000528/LER-1987-020, :on 870416,inadvertent ESF Actuation Occurred. Caused by Parity Error on Byte of Data Between Microprocessor & Remote Indication Controller.Mod to Install Time Delay Relays Developed	on 870416,inadvertent ESF Actuation Occurred. Caused by Parity Error on Byte of Data Between Microprocessor & Remote Indication Controller.Mod to Install Time Delay Relays Developed	10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)
05000528/LER-1987-021, :on 870729,control Room Essential Filtration Actuation Initiated on Channels a & B of Esfas.Caused by Voltage Spike.Monitor Reset,Returning Setpoint to Specified Value	on 870729,control Room Essential Filtration Actuation Initiated on Channels a & B of Esfas.Caused by Voltage Spike.Monitor Reset,Returning Setpoint to Specified Value
05000529/LER-1987-021, :on 871202,post-accident Sampling Sys Declared Inoperable.Caused by Personnel Error.Appropriate Functional & Surveillance Tests Completed & Sys Decalred Operable.W/	on 871202,post-accident Sampling Sys Declared Inoperable.Caused by Personnel Error.Appropriate Functional & Surveillance Tests Completed & Sys Decalred Operable.W/	10 CFR 50.73(c)(2) 10 CFR 50.73(e)(2)
05000528/LER-1987-024, :on 870902,two Dma Interface Cards Providing Input to Core Operating Limit Supervisory Sys Found Incorrectly Installed.Caused by Cognitive Personnel Error. Computer Technician Counseled	on 870902,two Dma Interface Cards Providing Input to Core Operating Limit Supervisory Sys Found Incorrectly Installed.Caused by Cognitive Personnel Error. Computer Technician Counseled	10 CFR 50.73(e)(2)(i)
05000528/LER-1987-026, :on 871027,automatic Actuation of Balance of Plant ESF Occurred Due to Inadvertent Containment Purge Isolated Actuation Signal.Caused by Personnel Error. Responsible Individual Will Be Reinstructed	on 871027,automatic Actuation of Balance of Plant ESF Occurred Due to Inadvertent Containment Purge Isolated Actuation Signal.Caused by Personnel Error. Responsible Individual Will Be Reinstructed	10 CFR 50.73(e)(2)
05000528/LER-1987-027, :on 870728,unit Entered Mode 4 (Hot Shutdown) W/O Meeting Surveillance Requirements for Containment Spray Sys Train B Pump.Caused by Personnel Error.Train a Pump Tests Verified & Procedure Revised	on 870728,unit Entered Mode 4 (Hot Shutdown) W/O Meeting Surveillance Requirements for Containment Spray Sys Train B Pump.Caused by Personnel Error.Train a Pump Tests Verified & Procedure Revised
05000528/LER-1987-028, :on 871217,inability to Meet Tech Spec Requirements Encountered Due to Failure to Retain Monitor Samples.Caused by Personnel Error.Technician Disciplined & Chemistry Dept Will Receive Training	on 871217,inability to Meet Tech Spec Requirements Encountered Due to Failure to Retain Monitor Samples.Caused by Personnel Error.Technician Disciplined & Chemistry Dept Will Receive Training

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