Forwards LER 80-026/01T-0
Person / Time
ML19323G992
Site:	Calvert Cliffs
Issue date:	06/03/1980
From:	Russell L BALTIMORE GAS & ELECTRIC CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19323G993	List: 05000317/LER-1980-026, Forwards LER 80-026/01T-0 05000317/LER-1980-026-01, /01T-0:on 800520,while in Hot Standby,Realignment of Condensate Storage Tank Header Supply Valves Resulted in Isolation of Water Supply to Auxiliary Feedwater Pumps. Caused by Error of Transposed Valve Numbers in Log
References
NUDOCS 8006090365
Download: ML19323G992 (1)
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LER-1980-026, Forwards LER 80-026/01T-0

Event date:
Report date:
3171980026R00 - NRC Website
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text

B ALTIMORE G AS AND ELECTRIC COMPANY P.O. S O X 147 5 B A LTIMOR E. M A RYL AN D 21203 7 CL F NU EAR PLANT LUSBY, M ARYLAND 20657 June 3, 1980 i

tir. Boyce H. Grier, Director Docket flo.

50-317 Office of Inspection & Enforcement License No.

DPR-53 U.S. fluclear Regulatory Comission Region I 631 Park Avenue King of Prussia, PA 19406

Dear fir. Grier:

Per Technical Specification 6.9.1.8.f, please find attached the two-week follow-up report for LER 80-26/1T.

Should you have questions regarding this report, we would be pleased to discuss them with you.

Very truly yours, W

L. B. Russell Chief Engineer LBR/ RED /gla Attachment cc:

Director, Office of Management Infomati_on and Program Control Messrs. A. E. Lundvall, Jr.

J. B. Bullock 80060903 g J

Licensee Event Report

Calvert Cliffs

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		Reporting criterion
05000317/LER-1980-001, Forwards LER 80-001/03L-0	Forwards LER 80-001/03L-0
05000317/LER-1980-001-03, /03L-0:on 800104,high Pressure Safety Injection Loop 12A Stop Would Not Move to Throttled Position.Caused by Loose Termination on One Electrical Lead Terminating at Valve Torque Switch.Terminal Screw Tightened	/03L-0:on 800104,high Pressure Safety Injection Loop 12A Stop Would Not Move to Throttled Position.Caused by Loose Termination on One Electrical Lead Terminating at Valve Torque Switch.Terminal Screw Tightened
05000318/LER-1980-001, Forwards LER 80-001/03L-0	Forwards LER 80-001/03L-0
05000318/LER-1980-001-03, /03L-0:on 800225,although Low Pressure Safety Injection Pump 21 Was Placed Out of Svc for Maint, Containment Spray Pump 21 Was Disassembled.Caused by Verbal Communication Error	/03L-0:on 800225,although Low Pressure Safety Injection Pump 21 Was Placed Out of Svc for Maint, Containment Spray Pump 21 Was Disassembled.Caused by Verbal Communication Error
05000318/LER-1980-002-03, /03L-0:on 800107,refueling Water Tank Narrow Range Level Indicator Was in Alarm W/Low Level,But Instrument Did Not Indicate Alarm Conditions.Caused by Faulty Indicator Alarm light-emitting Diode.Diode Replaced	/03L-0:on 800107,refueling Water Tank Narrow Range Level Indicator Was in Alarm W/Low Level,But Instrument Did Not Indicate Alarm Conditions.Caused by Faulty Indicator Alarm light-emitting Diode.Diode Replaced
05000318/LER-1980-002, Forwards LER 80-002/03L-0	Forwards LER 80-002/03L-0
05000317/LER-1980-002-04, /04T-0:on 800322,instantaneous Hourly Average for Condenser Temp Rise Observed in Excess of Tech Spec Limit. Caused by Operator Inattention to Temp Rise Across Condenser & Environ Conditions	/04T-0:on 800322,instantaneous Hourly Average for Condenser Temp Rise Observed in Excess of Tech Spec Limit. Caused by Operator Inattention to Temp Rise Across Condenser & Environ Conditions
05000317/LER-1980-002, Forwards LER 80-002/04T-0	Forwards LER 80-002/04T-0
05000317/LER-1980-003-03, /03L-0:on 800108,during Routine Containment Air Lock Surveillance,Emergency Escape Lock Leakage Found Greater than Allowed.Caused by Excessive Leaking of Packing Glands for Doors Handwheels.Packing Tightened	/03L-0:on 800108,during Routine Containment Air Lock Surveillance,Emergency Escape Lock Leakage Found Greater than Allowed.Caused by Excessive Leaking of Packing Glands for Doors Handwheels.Packing Tightened
05000317/LER-1980-003, Forwards LER 80-003/03L-0	Forwards LER 80-003/03L-0
05000318/LER-1980-003-03, /03L-0:on 800110,repairs to Number 21 Diesel Generator Jacket Coolant Sys Required Diesel Be Out of Svc. Caused by Leaking Gasket on Jacket Cooling Water Discharge Header.Leak Located & Repaired	/03L-0:on 800110,repairs to Number 21 Diesel Generator Jacket Coolant Sys Required Diesel Be Out of Svc. Caused by Leaking Gasket on Jacket Cooling Water Discharge Header.Leak Located & Repaired
05000318/LER-1980-003, Forwards LER 80-003/03L-0	Forwards LER 80-003/03L-0
05000317/LER-1980-004, Forwards LER 80-004/03L-0	Forwards LER 80-004/03L-0
05000317/LER-1980-004-03, /03L-0:on 800110,low Flow Alarm Received for Containment Particulate & Gaseous Radiation Monitor Sys. Caused by Gasket Leakage at Particulate Detector Sample Psig.Gaskets Replaced & Flow Restored to Normal	/03L-0:on 800110,low Flow Alarm Received for Containment Particulate & Gaseous Radiation Monitor Sys. Caused by Gasket Leakage at Particulate Detector Sample Psig.Gaskets Replaced & Flow Restored to Normal
05000318/LER-1980-004-03, /03L-0:on 800121,during Steady State Operation, Received Indication of Several Spurious Loss of Load Trips on Channel B.Cause of Event Unknown.Troubleshooting Revealed Electrical Noise on Input Leads	/03L-0:on 800121,during Steady State Operation, Received Indication of Several Spurious Loss of Load Trips on Channel B.Cause of Event Unknown.Troubleshooting Revealed Electrical Noise on Input Leads
05000318/LER-1980-004, Forwards LER 80-004/03L-0	Forwards LER 80-004/03L-0
05000318/LER-1980-005, Forwards LER 80-005/03L-0	Forwards LER 80-005/03L-0
05000318/LER-1980-005-03, /03L-0:on 800122,five Channel B Trip Units Were Bypassed Due to Spurious High Power Levels.Caused by Noise from Excore Nuclear Instrument Upper Subchannel Detector. Troubleshooting Planned for Next Cold Shutdown	/03L-0:on 800122,five Channel B Trip Units Were Bypassed Due to Spurious High Power Levels.Caused by Noise from Excore Nuclear Instrument Upper Subchannel Detector. Troubleshooting Planned for Next Cold Shutdown
05000317/LER-1980-005, Forwards LER 80-005/03L-0	Forwards LER 80-005/03L-0
05000317/LER-1980-005-03, /03L-0:on 800325,during Normal Operation,Control Room Air Conditioning Unit 12 Tripped.Caused by Failure of Diaphragm on Unipressure Valve.Valve Replaced & Unit Returned to Svc	/03L-0:on 800325,during Normal Operation,Control Room Air Conditioning Unit 12 Tripped.Caused by Failure of Diaphragm on Unipressure Valve.Valve Replaced & Unit Returned to Svc
05000317/LER-1980-006, Forwards LER 80-006/03L-0	Forwards LER 80-006/03L-0
05000317/LER-1980-006-03, /03L-0:on 800103,while Performing Routine Surveillance Test,Control Element Assembly 60 Was Dropped Into Core.Cause Unknown.All Parameters Found Normal & No Problems Encountered.No Further Action Anticipated	/03L-0:on 800103,while Performing Routine Surveillance Test,Control Element Assembly 60 Was Dropped Into Core.Cause Unknown.All Parameters Found Normal & No Problems Encountered.No Further Action Anticipated
05000318/LER-1980-006, Forwards LER 80-006/03L-0	Forwards LER 80-006/03L-0
05000318/LER-1980-006-03, /03L-0:on 800126,during Steady State Operation, Reactor Protective Sys Channel a High Power,Low Flow,Axial Flux Offset & Thermal Margin/Low Pressure Trip Units Bypassed for Corrective Maint.Meter Input Jacks Cleaned	/03L-0:on 800126,during Steady State Operation, Reactor Protective Sys Channel a High Power,Low Flow,Axial Flux Offset & Thermal Margin/Low Pressure Trip Units Bypassed for Corrective Maint.Meter Input Jacks Cleaned
05000317/LER-1980-007-01, /01X-0:on 800129,while Conducting Core Flush, Emergency Relief Valve RC-404 Opened.Apparently Caused by High Pressure Signal from Overpressure in Protection Circuit.Valve Shut W/Manual Override	/01X-0:on 800129,while Conducting Core Flush, Emergency Relief Valve RC-404 Opened.Apparently Caused by High Pressure Signal from Overpressure in Protection Circuit.Valve Shut W/Manual Override
05000318/LER-1980-007, Forwards LER 80-007/03L-0	Forwards LER 80-007/03L-0
05000318/LER-1980-007-03, /03L-0:on 800130,while Performing Routine Surveillance Testing,Discovered Control Element Assembly 54 Would Not Drive Down Electrically.Cause Not Known.Rod Became Operable During Investigation of Rod Circuitry	/03L-0:on 800130,while Performing Routine Surveillance Testing,Discovered Control Element Assembly 54 Would Not Drive Down Electrically.Cause Not Known.Rod Became Operable During Investigation of Rod Circuitry
05000317/LER-1980-007, Forwards LER 80-007/01T-0	Forwards LER 80-007/01T-0
05000317/LER-1980-008, Forwards LER 80-008/03L-0	Forwards LER 80-008/03L-0
05000317/LER-1980-008-03, /03L-0:on 800126,while Cooling Down for Scheduled Outage,Survey Technician Discovered Steam Blowing from 11A Reactor Coolant Pump.Sensing Line lPDT-123A Had through-wall Leak.Caused by Friction of Sensing Line W/Another Pipe	/03L-0:on 800126,while Cooling Down for Scheduled Outage,Survey Technician Discovered Steam Blowing from 11A Reactor Coolant Pump.Sensing Line lPDT-123A Had through-wall Leak.Caused by Friction of Sensing Line W/Another Pipe
05000318/LER-1980-008-03, /03L-0:on 800125,containment Spray Header 22 Was Isolated.Caused by Need to Repair Shutdown Heat Exchanger Inlet Cross Connect Valve.New Packing Installed	/03L-0:on 800125,containment Spray Header 22 Was Isolated.Caused by Need to Repair Shutdown Heat Exchanger Inlet Cross Connect Valve.New Packing Installed
05000318/LER-1980-008, Forwards LER 80-008/03L-0	Forwards LER 80-008/03L-0
05000318/LER-1980-009-03, /03L-0:on 800131,while Conducting Routine Test, Control Element Assembly (CEA) 32 Dropped Into Core.Cause Unknown.Technician Will Be Assigned During Next STP 0-29 to Monitor Operating Parameters of All CEAs on real-time Basi	/03L-0:on 800131,while Conducting Routine Test, Control Element Assembly (CEA) 32 Dropped Into Core.Cause Unknown.Technician Will Be Assigned During Next STP 0-29 to Monitor Operating Parameters of All CEAs on real-time Basis
05000318/LER-1980-009, Forwards LER 80-009/03L-0	Forwards LER 80-009/03L-0
05000317/LER-1980-009, Forwards LER 80-009/03L-0	Forwards LER 80-009/03L-0
05000317/LER-1980-009-03, /03L-0:on 800201,during Surveillance Testing, Discovered Hose for One of Two Containment Elevator Hose Stations Missing.Caused by Work Group Using Fire Sys for Cleaning Purposes on Elevation of Containment	/03L-0:on 800201,during Surveillance Testing, Discovered Hose for One of Two Containment Elevator Hose Stations Missing.Caused by Work Group Using Fire Sys for Cleaning Purposes on Elevation of Containment
05000318/LER-1980-010, Forwards LER 80-010/03L-0	Forwards LER 80-010/03L-0
05000318/LER-1980-010-03, /03L-0:on 800224,during Surveillance Testing, Control Element Assemblies 31 & 34 Dropped Into Core.Caused by Fault in Timer Module.Module Replaced	/03L-0:on 800224,during Surveillance Testing, Control Element Assemblies 31 & 34 Dropped Into Core.Caused by Fault in Timer Module.Module Replaced
05000318/LER-1980-011, Forwards Updated LER 80-011/01X-1	Forwards Updated LER 80-011/01X-1
05000318/LER-1980-011-01, Diesel Generator 21 Failed to Achieve 10-s Rated Speed,Rendering Low Pressure Safety Injection Pump 22 Inoperable.Caused by Slow Response of Diesel Generator Governor.Governor Replaced	Diesel Generator 21 Failed to Achieve 10-s Rated Speed,Rendering Low Pressure Safety Injection Pump 22 Inoperable.Caused by Slow Response of Diesel Generator Governor.Governor Replaced
05000317/LER-1980-011-03, W/Rcs at 130 Degrees & 250 Psia,Shutdown Cooling Suction Header Relief Lifted & Failed to Reset.Caused by Personnel Error.Valve Reset	W/Rcs at 130 Degrees & 250 Psia,Shutdown Cooling Suction Header Relief Lifted & Failed to Reset.Caused by Personnel Error.Valve Reset
05000317/LER-1980-011, Forwards Updated LER 80-011/03X-1	Forwards Updated LER 80-011/03X-1
05000317/LER-1980-012, Forwards LER 80-012/03L-0	Forwards LER 80-012/03L-0
05000317/LER-1980-012-03, /03L-0:on 800211,while Performing Routine Surveillance Test,Control Element Assembly (CEA) 35 Dropped Into Core.Cause Unknown.Technician Will Be Assigned to Monitor Operating Parameter of All CEAs During Next STP	/03L-0:on 800211,while Performing Routine Surveillance Test,Control Element Assembly (CEA) 35 Dropped Into Core.Cause Unknown.Technician Will Be Assigned to Monitor Operating Parameter of All CEAs During Next STP
05000318/LER-1980-012-03, /03L-0:on 800219,during Routine Surveillance,Small Leak Discovered on Charging Pump Common Suction Header Relief Valve.Caused by Vibration Induced Metal Fatigue in heat-affected Zone of Welded Penetration in Header	/03L-0:on 800219,during Routine Surveillance,Small Leak Discovered on Charging Pump Common Suction Header Relief Valve.Caused by Vibration Induced Metal Fatigue in heat-affected Zone of Welded Penetration in Header
05000318/LER-1980-012, Forwards LER 80-012/03L-0	Forwards LER 80-012/03L-0
05000318/LER-1980-013-03, /03L-0:on 800303,channel Zf Pressure Input Signal for Steam Generator Isolation 22 Was Bypassed.Caused by Signal Isolater 2-E/E-1023C Being Out of Calibr Due to Nonlinear Response	/03L-0:on 800303,channel Zf Pressure Input Signal for Steam Generator Isolation 22 Was Bypassed.Caused by Signal Isolater 2-E/E-1023C Being Out of Calibr Due to Nonlinear Response
05000318/LER-1980-013, Forwards LER 80-013/03L-0	Forwards LER 80-013/03L-0
05000317/LER-1980-013-03, During Surveillance Test, Channel D Containment High Pressure Setpoint Less Conservative than Tech Specs.Caused by Failed Signal Isolator 1-E/E-5313D.Instrument Returned for Repair	During Surveillance Test, Channel D Containment High Pressure Setpoint Less Conservative than Tech Specs.Caused by Failed Signal Isolator 1-E/E-5313D.Instrument Returned for Repair
05000317/LER-1980-013, Forwards Updated LER 80-013/03X-1	Forwards Updated LER 80-013/03X-1
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05000317/LER-1980-026, Forwards LER 80-026/01T-0

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Dear fir. Grier:

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