Forwards LER 81-011/03L-0
Person / Time
ML19347D625
Site:	Calvert Cliffs
Issue date:	03/13/1981
From:	Russell L BALTIMORE GAS & ELECTRIC CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19347D626	List: 05000317/LER-1981-011, Forwards LER 81-011/03L-0 05000317/LER-1981-011-03, /03L-0:on 810212,thermal Margin/Low Pressure & Steam Generator Low Pressure Trip Units Bypassed While Investigating Intermittent Failures of Reactor Protective Sys Channel D Steam Generator Pressure
References
NUDOCS 8103260882
Download: ML19347D625 (1)
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LER-1981-011, Forwards LER 81-011/03L-0

Event date:
Report date:
3171981011R00 - NRC Website
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text

B ALTIMORE G AS AND ELECTRIC COMPANY P. O. B O X 1475 B A LTIM O R E. M A R Y L AN D 212o3 1

NUCLEAR POWER DEPARTMENT C A LVERT CLIF PS NUCLEA R POeER PL AN T LUSSY, M ARYLANG 20657 March 13,1931 Mr. Boyce H. Grier, Director Docket No.

50-317 Office of Inspection & Enforcement License No. DPR-53 U.S. Nuclear Regulatory Commission Region 1 31 Park Avenue King of Prussia, PA 19406

Dear Mr. Grier:

Per Technical Specification 6.9.1.9.b, please find attached the thirty day report for LER SI-il/3L.

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

Very truly yours, L.

Plant Superintendent LBR:PGR:mmr cc:

Director, Office of Management Information and Program Control Messrs:

A.E. Lundvall, Jr.

3.A. Tiernan 001 f

810 3 260N4L s'

Licensee Event Report

Calvert Cliffs

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		Reporting criterion
05000317/LER-1981-001-01, /01T-0:on 810114,feedwater Transmitter Out of Calibr,Resulting in Erroneous Adjustments to ex-core Nuclear Instrument Channels.Transmitter Failed to Maintain Calibr. Transmitter Replaced.Cause of Shift in Calibr Not Stated	/01T-0:on 810114,feedwater Transmitter Out of Calibr,Resulting in Erroneous Adjustments to ex-core Nuclear Instrument Channels.Transmitter Failed to Maintain Calibr. Transmitter Replaced.Cause of Shift in Calibr Not Stated
05000317/LER-1981-001, Forwards LER 81-001/01T-0	Forwards LER 81-001/01T-0
05000318/LER-1981-001-03, /03L-0:on 810107,Channel B Reactor Protective Sys Trip Units for High Power,Thermal Margin/Low Pressure & Axial Flux Offset Bypassed for Troubleshooting Linear Power Range Instrument.Detector Output Faulty	/03L-0:on 810107,Channel B Reactor Protective Sys Trip Units for High Power,Thermal Margin/Low Pressure & Axial Flux Offset Bypassed for Troubleshooting Linear Power Range Instrument.Detector Output Faulty
05000318/LER-1981-001, Forwards LER 81-001/03L-0	Forwards LER 81-001/03L-0
05000318/LER-1981-002-03, /03L-0:on 810108,diesel Generator 12 Started Automatically.Possibly Caused by Control Relays in Abnormal State.Generator Reset & Tested	/03L-0:on 810108,diesel Generator 12 Started Automatically.Possibly Caused by Control Relays in Abnormal State.Generator Reset & Tested
05000318/LER-1981-002, Forwards LER 81-002/03L-0	Forwards LER 81-002/03L-0
05000317/LER-1981-002-03, /03L-0:on 810111,auxiliary Feedwater Flow to Steam Generators Found Set Below Normal Limit.Caused by Feed Regulating Valve Stroke Limitation Implemented Under Mods Required by NUREG-0578.Restriction Removed on 810122	/03L-0:on 810111,auxiliary Feedwater Flow to Steam Generators Found Set Below Normal Limit.Caused by Feed Regulating Valve Stroke Limitation Implemented Under Mods Required by NUREG-0578.Restriction Removed on 810122
05000317/LER-1981-002, Forwards LER 81-002/03L-0	Forwards LER 81-002/03L-0
05000317/LER-1981-003-03, /03L-0:on 810217,engineered Safety Features Actuation Sys Channel 2D 12 Steam Generator Pressure Isolator Found Out of Spec.Caused by Transmation Isolator w/non-liner Output.Isolator Replaced	/03L-0:on 810217,engineered Safety Features Actuation Sys Channel 2D 12 Steam Generator Pressure Isolator Found Out of Spec.Caused by Transmation Isolator w/non-liner Output.Isolator Replaced
05000317/LER-1981-003, Forwards LER 81-003/03L-0	Forwards LER 81-003/03L-0
05000318/LER-1981-003-03, /03L-0:on 810123,shutdown Cooling Return Header Isolation valve,MOV-652,lost Valve Position Indication & Flow Was Stopped.Caused by Motor Control Center Power Transfer.Transfer Completed,Indication & Flow Restored	/03L-0:on 810123,shutdown Cooling Return Header Isolation valve,MOV-652,lost Valve Position Indication & Flow Was Stopped.Caused by Motor Control Center Power Transfer.Transfer Completed,Indication & Flow Restored
05000318/LER-1981-003, Forwards LER 81-003/03L-0	Forwards LER 81-003/03L-0
05000317/LER-1981-004-03, /03L-0:on 810119,containment Cooler 8-inch SRW Discharge valve,1-CV-1593,failed to Open.Caused by Solenoid valve,1-SV-1593,not Allowing 1-CV-1593 to Open.Solenoid Valve Replaced W/Spare & Parts Kit Installed	/03L-0:on 810119,containment Cooler 8-inch SRW Discharge valve,1-CV-1593,failed to Open.Caused by Solenoid valve,1-SV-1593,not Allowing 1-CV-1593 to Open.Solenoid Valve Replaced W/Spare & Parts Kit Installed
05000317/LER-1981-004-01, Containment Cooler 8-inch SRW Discharge Valve Failed to Open.Apparently Caused by Low Differential Pressure Rating of Solenoid Valve That Would Not Vent to Allow Discharge Valve to Open	Containment Cooler 8-inch SRW Discharge Valve Failed to Open.Apparently Caused by Low Differential Pressure Rating of Solenoid Valve That Would Not Vent to Allow Discharge Valve to Open
05000318/LER-1981-004, Forwards LER 81-004/03L-0	Forwards LER 81-004/03L-0
05000318/LER-1981-004-03, /03L-0:on 810204, While Conducting Preventive Maint,Shutdown Cooling Flow Lost.Caused by Procedure Not Containing Sufficient Info.Flow Lost Due to de-energized Vital Ac Bus Causing Valve to Shut.Procedure Revised	/03L-0:on 810204, While Conducting Preventive Maint,Shutdown Cooling Flow Lost.Caused by Procedure Not Containing Sufficient Info.Flow Lost Due to de-energized Vital Ac Bus Causing Valve to Shut.Procedure Revised
05000317/LER-1981-004, Forwards LER 81-004/03L-0	Forwards LER 81-004/03L-0
05000318/LER-1981-005, Forwards LER 81-005/01T-0	Forwards LER 81-005/01T-0
05000318/LER-1981-005-01, /01T-0:on 810118,w/reactor Coolant Sys at 220 F & 230 Psia,Presssure Transmitter Failed High,Causing Power Relief Valve RC-404-ERV to Open.Caused by Loose Oscillator/ Amplifier Assembly within Transmitter 2-PT-103-1	/01T-0:on 810118,w/reactor Coolant Sys at 220 F & 230 Psia,Presssure Transmitter Failed High,Causing Power Relief Valve RC-404-ERV to Open.Caused by Loose Oscillator/ Amplifier Assembly within Transmitter 2-PT-103-1
05000317/LER-1981-005-03, /03L-0:on 810119,during Surveillance Testing, Containment Cooler 14 Would Not Start in Slow Speed.Caused by Contacts Not Closing on Slow Speed Motor Starter Interlock Contact Assembly Due to Cracked Case	/03L-0:on 810119,during Surveillance Testing, Containment Cooler 14 Would Not Start in Slow Speed.Caused by Contacts Not Closing on Slow Speed Motor Starter Interlock Contact Assembly Due to Cracked Case
05000317/LER-1981-005, Forwards LER 81-005/03L-0	Forwards LER 81-005/03L-0
05000317/LER-1981-006, Forwards LER 81-006/03L-0	Forwards LER 81-006/03L-0
05000317/LER-1981-006-03, /03L-0:on 810113,steam Generator 11,level Channel D Placed Out of Svc Per Tech Specs to Correct Problem W/Ref Leg.Caused by Indication Deviation Among Redundant Safety Channels Due to Level Transmitter Valve leak-through	/03L-0:on 810113,steam Generator 11,level Channel D Placed Out of Svc Per Tech Specs to Correct Problem W/Ref Leg.Caused by Indication Deviation Among Redundant Safety Channels Due to Level Transmitter Valve leak-through
05000318/LER-1981-006, Forwards LER 81-006/03L-0	Forwards LER 81-006/03L-0
05000318/LER-1981-006-03, /03L-0:on 810113 Diesel Generator 12 Switchgear Would Not Close in on 21 4-kV Bus Per Tech Spec.Caused by High Resistance at Secondary Disconnect.Continuity of Closing Circuit Interlocks Verified & Switchgear Tested	/03L-0:on 810113 Diesel Generator 12 Switchgear Would Not Close in on 21 4-kV Bus Per Tech Spec.Caused by High Resistance at Secondary Disconnect.Continuity of Closing Circuit Interlocks Verified & Switchgear Tested
05000318/LER-1981-007-03, MSIVs 21 & 22 Failed to Shut within Required Time Limit.Caused by Galled Stems of Packing Junk Ring.Rings Replaced	MSIVs 21 & 22 Failed to Shut within Required Time Limit.Caused by Galled Stems of Packing Junk Ring.Rings Replaced
05000317/LER-1981-007-03, /03L-0:on 810112,engineered Safety Features Actuation Sys Sensor Channel Ze for Steam Generator 12 Pressure Placed Out of Svc.Caused by Failure of Transmation Isolator (230IT) 1-E/E-1023B.Isolator Output Found Low	/03L-0:on 810112,engineered Safety Features Actuation Sys Sensor Channel Ze for Steam Generator 12 Pressure Placed Out of Svc.Caused by Failure of Transmation Isolator (230IT) 1-E/E-1023B.Isolator Output Found Low
05000317/LER-1981-007, Forwards LER 81-007/03L-0	Forwards LER 81-007/03L-0
05000318/LER-1981-007, Forwards LER 81-007/03L-0	Forwards LER 81-007/03L-0
05000317/LER-1981-008, Forwards LER 81-008/01T-0	Forwards LER 81-008/01T-0
05000318/LER-1981-008-03, /03L-0:on 810113,steam Generator 22 Low Pressure Bistable Meter 2D Found Out of Calibr & Signal Isolator 2-E/E-1023A Failed.Caused by Natural Wear & Aging.Cause of Isolator Failure Not Stated	/03L-0:on 810113,steam Generator 22 Low Pressure Bistable Meter 2D Found Out of Calibr & Signal Isolator 2-E/E-1023A Failed.Caused by Natural Wear & Aging.Cause of Isolator Failure Not Stated
05000317/LER-1981-008-01, /01T-0:on 810203,discovered That When Fire Hose Stations in Auxiliary Bldg & Unit 2 Containment Bldg Were Isolated,Backup Fire Hose Not Routed as Required.Caused by Personnel Error.Backup Hoses Routed as Required	/01T-0:on 810203,discovered That When Fire Hose Stations in Auxiliary Bldg & Unit 2 Containment Bldg Were Isolated,Backup Fire Hose Not Routed as Required.Caused by Personnel Error.Backup Hoses Routed as Required
05000318/LER-1981-008, Forwards LER 81-008/03L-0	Forwards LER 81-008/03L-0
05000318/LER-1981-009-03, /03L-0:on 810330,during Normal Power Operation, Motor Operated Isolation Valve in Saltwater Sys Would Not Operate Electrically.Caused by Tripped Overload Devices on Phase a & C.Devices Reset	/03L-0:on 810330,during Normal Power Operation, Motor Operated Isolation Valve in Saltwater Sys Would Not Operate Electrically.Caused by Tripped Overload Devices on Phase a & C.Devices Reset
05000317/LER-1981-009-03, /03L-0:on 810205,reactor Protector Sys Channel D Trip Units Bypassed.Caused by Increase in Temp Detector Resistance,Probably Due to Increased Connection Resistance in Containment.Input Removed from Channel D	/03L-0:on 810205,reactor Protector Sys Channel D Trip Units Bypassed.Caused by Increase in Temp Detector Resistance,Probably Due to Increased Connection Resistance in Containment.Input Removed from Channel D
05000318/LER-1981-009, Forwards LER 81-009/03L-0	Forwards LER 81-009/03L-0
05000317/LER-1981-009, Forwards LER 81-009/03L-0	Forwards LER 81-009/03L-0
05000318/LER-1981-010, Forwards LER 81-010/03L-0	Forwards LER 81-010/03L-0
05000318/LER-1981-010-03, /03L-0:on 810301,power-operated Relief Valve ERV-402 Failed to Seat Resulting in Valve Isolation.Caused by Insufficient Pressure in Sys While Filling Rcs.Pressure Raised & Valve Seated	/03L-0:on 810301,power-operated Relief Valve ERV-402 Failed to Seat Resulting in Valve Isolation.Caused by Insufficient Pressure in Sys While Filling Rcs.Pressure Raised & Valve Seated
05000317/LER-1981-010, Forwards LER 81-010/03L-0	Forwards LER 81-010/03L-0
05000317/LER-1981-010-03, /03L-0:on 810123,nipple Broken on Valve CV-5178, Salt Water Emergency Return Isolation from ECCS Pump Room Coolers.Caused by Lead Brick Fall During Const of Lead Shield Wall.Valve Isolated & Nipple Replaced	/03L-0:on 810123,nipple Broken on Valve CV-5178, Salt Water Emergency Return Isolation from ECCS Pump Room Coolers.Caused by Lead Brick Fall During Const of Lead Shield Wall.Valve Isolated & Nipple Replaced
05000317/LER-1981-011, Forwards LER 81-011/03L-0	Forwards LER 81-011/03L-0
05000317/LER-1981-011-03, /03L-0:on 810212,thermal Margin/Low Pressure & Steam Generator Low Pressure Trip Units Bypassed While Investigating Intermittent Failures of Reactor Protective Sys Channel D Steam Generator Pressure	/03L-0:on 810212,thermal Margin/Low Pressure & Steam Generator Low Pressure Trip Units Bypassed While Investigating Intermittent Failures of Reactor Protective Sys Channel D Steam Generator Pressure
05000318/LER-1981-011-03, /03L-0:on 810404,steam Generator 21 Pressure Instrument 2-PY-1013D Failed,Causing Channel D Thermal Margin/Low Pressure Trip.Caused by Failure of Sealed, Nonadjustable,Solid State Load Isolator.Device Discarded	/03L-0:on 810404,steam Generator 21 Pressure Instrument 2-PY-1013D Failed,Causing Channel D Thermal Margin/Low Pressure Trip.Caused by Failure of Sealed, Nonadjustable,Solid State Load Isolator.Device Discarded
05000318/LER-1981-011, Forwards LER 81-011/03L-0	Forwards LER 81-011/03L-0
05000317/LER-1981-012, Forwards LER 81-012/03L-0	Forwards LER 81-012/03L-0
05000317/LER-1981-012-03, /03L-0:on 810213,while Shifting from 1 to 2 Running Charging Pumps,Letdown Relief Valve CVC-345-RV Lifted & Failed to Reseat.Possibly Caused by Pressure Surge in Line.Valve Matls Review Being Conducted	/03L-0:on 810213,while Shifting from 1 to 2 Running Charging Pumps,Letdown Relief Valve CVC-345-RV Lifted & Failed to Reseat.Possibly Caused by Pressure Surge in Line.Valve Matls Review Being Conducted
05000317/LER-1981-013, Forwards LER 81-013/03L-0	Forwards LER 81-013/03L-0
05000317/LER-1981-013-03, /03L-0:on 810217,inboard Turbine Bearing Journal in Auxiliary Feedwater Pump 11 Was Found Heavily Heat Scored & Babbit Matl Was Suspended in Oil.Probably Caused by Improper Oil Level or Contaminated Oil.Procedures Changed	/03L-0:on 810217,inboard Turbine Bearing Journal in Auxiliary Feedwater Pump 11 Was Found Heavily Heat Scored & Babbit Matl Was Suspended in Oil.Probably Caused by Improper Oil Level or Contaminated Oil.Procedures Changed
05000318/LER-1981-013-03, /03L-0:on 810304,while Installing Instrumentation, Temporary Shunt Opened,Causing Loss of Power to Low Pressure Safety Injection Pump 22 & Momentary Loss of Shutdown Cooling Flow.Caused by Opened Lead on One End of Shunt	/03L-0:on 810304,while Installing Instrumentation, Temporary Shunt Opened,Causing Loss of Power to Low Pressure Safety Injection Pump 22 & Momentary Loss of Shutdown Cooling Flow.Caused by Opened Lead on One End of Shunt
... further results

05000317/LER-1981-011, Forwards LER 81-011/03L-0

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Dear Mr. Grier:

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