Forwards LER 80-157/03L-0
Person / Time
ML19344B574
Site:	Sequoyah
Issue date:	10/10/1980
From:	Calhoun J TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19344B575	List: 05000327/LER-1980-157, Forwards LER 80-157/03L-0 05000327/LER-1980-157-03, /03L-0:on 800911,containment Isolation Valve FCV-61-192 Took 20-s to Stroke Closed.Caused by Ice Buildup. No Subsequent Problems Have Been Experienced
References
NUDOCS 8010210514
Download: ML19344B574 (1)
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LER-1980-157, Forwards LER 80-157/03L-0

Event date:
Report date:
3271980157R00 - NRC Website
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text

TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 37401 1750 Chestnut Street Tower II l

October 10, 1980 Mr. James P. O'Reilly, Director U.S. Nuclear Begulatory Ca n4a=4n Office of Inspeedon and Enforcenent Region II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303

Dear Mr. O'Reilly:

TEMEMM VAUFl AUIf0RITY - Sr.wuxAH NUCLEAR PIA!Tf UNIT 1 - DQumr IO. 50-327 - FACILITY OPERATDG r.Tm4SE DPR REPORIABLE Ovuum2EE

)

REPORP SGO-50-327/80157 i

'Ihe errinaad report provides detalla concerning containment isolaticn valve EtN-61-192 (glycol systan isolaticn valve) which took apprennately twenty 6 to stroke closed. 'Ihis report is subnitted in accorthnce with Secpoyah unit 1 Technical SoeiFimtion 6.9.1.13.c Very truly yours,

'EUESSEE VAUEI AUITORITY J. R. Calhoun Director of Nuclear Power Enclosure (3) cc (Enclosure):

Director (3)

Office of Management Inforn.aticm and Program Ccutrol U.S. Delaar Regulatory Ccmnissicn Washinctem DC 20555 Director (40)

Office of Inspection and Enforcement U.S. Belaar Regulatory Ccanissicm Washingttn, DC 20555 Mr. Bill Lavallee

&.rlear Safety Analysis Center Palo Alto, California 94303 7

l i

Mr. W. T. Cottle, NRC Inspector, Sequoyah m/(j b

l 8GI0no T /q An Eaual Occortunity Emofont

Licensee Event Report

Sequoyah

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		Reporting criterion
05000327/LER-1980-001, Forwards LER 80-001/01T-0	Forwards LER 80-001/01T-0
05000327/LER-1980-001-01, /01T-0:on 800301-03,during Initial Fuel Loading, Licensee Failed to Estimate Flowrate from Svc Bldg Exhaust at 4-h Intervals.Caused by Misunderstanding of Tech Spec Requirements.Plant Instructions Revised	/01T-0:on 800301-03,during Initial Fuel Loading, Licensee Failed to Estimate Flowrate from Svc Bldg Exhaust at 4-h Intervals.Caused by Misunderstanding of Tech Spec Requirements.Plant Instructions Revised
05000327/LER-1980-002, Forwards LER 80-002/01T-0	Forwards LER 80-002/01T-0
05000327/LER-1980-002-01, /01T-0:on 800306,contents of Task Decontamination Collector Tank Discharged Via Liquid Radwaste Effluent Line to Cooling Tower Blowdown W/O Flow Estimates Being Performed.Caused by Misunderstanding of Tech Specs	/01T-0:on 800306,contents of Task Decontamination Collector Tank Discharged Via Liquid Radwaste Effluent Line to Cooling Tower Blowdown W/O Flow Estimates Being Performed.Caused by Misunderstanding of Tech Specs
05000327/LER-1980-003-01, /01T-0:on 800310,following Initial Fuel Loading, Flow Through Auxiliary Bldg Exhaust Sampler Not Maintained for 3.25-h.Caused by Misunderstanding of Tech Specs. Personnel Reinstructed in Applicable Requirements	/01T-0:on 800310,following Initial Fuel Loading, Flow Through Auxiliary Bldg Exhaust Sampler Not Maintained for 3.25-h.Caused by Misunderstanding of Tech Specs. Personnel Reinstructed in Applicable Requirements
05000327/LER-1980-003, Forwards LER 80-003/01T-0	Forwards LER 80-003/01T-0
05000327/LER-1980-004, Forwards LER 80-004/01T-0	Forwards LER 80-004/01T-0
05000327/LER-1980-004-01, /01T-0:on 800311,following Initial Fuel Loading, Flow Estimates for Auxiliary Bldg Vent Monitor Not Performed for 10-h.Caused by Misunderstanding of Tech Specs.Personnel Reinstructed Re Applicable Requirements	/01T-0:on 800311,following Initial Fuel Loading, Flow Estimates for Auxiliary Bldg Vent Monitor Not Performed for 10-h.Caused by Misunderstanding of Tech Specs.Personnel Reinstructed Re Applicable Requirements
05000327/LER-1980-005-03, /03L-0:on 800311,while Performing SI-247.605, Reactor Solid State Protection Sys Was Placed in Input Inhibit Mode,Removing High Voltage from Source Range Channel N31.Caused by Removal of Fuses from Voltage Cut Out Relay	/03L-0:on 800311,while Performing SI-247.605, Reactor Solid State Protection Sys Was Placed in Input Inhibit Mode,Removing High Voltage from Source Range Channel N31.Caused by Removal of Fuses from Voltage Cut Out Relay
05000327/LER-1980-005, Forwards LER 80-005/03L-0	Forwards LER 80-005/03L-0
05000327/LER-1980-006-01, /01T-0:on 800314,w/essential Raw Cooling Water Radiation Monitors on Train a Inoperable,Personnel Determined That Limiting Condition of Operation Requires Sampling.Caused by Misinterpretation of Tech Specs	/01T-0:on 800314,w/essential Raw Cooling Water Radiation Monitors on Train a Inoperable,Personnel Determined That Limiting Condition of Operation Requires Sampling.Caused by Misinterpretation of Tech Specs
05000327/LER-1980-006, Forwards LER 80-006/01T-0	Forwards LER 80-006/01T-0
05000327/LER-1980-007-01, /01T-0:on 800315,following Initial Core Loading, Found Incorrect (Nonconservative) Valve Operator Weights Used in Seismic Analysis for Component Cooling Water Valves FCV-70-133,134 & 183.Caused by Incorrect Vendor Data	/01T-0:on 800315,following Initial Core Loading, Found Incorrect (Nonconservative) Valve Operator Weights Used in Seismic Analysis for Component Cooling Water Valves FCV-70-133,134 & 183.Caused by Incorrect Vendor Data
05000327/LER-1980-007, Forwards LER 80-007/01T-0	Forwards LER 80-007/01T-0
05000327/LER-1980-008, Forwards LER 80-008/03L-0	Forwards LER 80-008/03L-0
05000327/LER-1980-008-03, /03L-0:on 800303,cooling Tower Blowdown Effluent Line Flow Monitor O-FR-27-175 Was Declared Inoperable.Flow Monitor Consistently Indicated Higher Flowrate than Actually Existed.Cause Unknown.Different Instrument to Be Instal	/03L-0:on 800303,cooling Tower Blowdown Effluent Line Flow Monitor O-FR-27-175 Was Declared Inoperable.Flow Monitor Consistently Indicated Higher Flowrate than Actually Existed.Cause Unknown.Different Instrument to Be Installed
05000327/LER-1980-009, Forwards LER 80-009/03L-0	Forwards LER 80-009/03L-0
05000327/LER-1980-009-03, /03L-0:on 800303,liquid Radwaste Effluent Line Flow Monitor 0-FT-77-42 Consistently Indicated Higher Discharge Flow Rate than Actually Observed.Cause Not Stated.Flow Monitor Modified & Returned to Svc	/03L-0:on 800303,liquid Radwaste Effluent Line Flow Monitor 0-FT-77-42 Consistently Indicated Higher Discharge Flow Rate than Actually Observed.Cause Not Stated.Flow Monitor Modified & Returned to Svc
05000327/LER-1980-010-03, /03L-0:on 800304,gaseous Vent Flow Rate Monitors for Units 1 & 2 Shield Bldgs & Auxiliary Bldg Were Declared Inoperable.Cause Not Stated.Gaseous Flow Rate Monitors to Be Redesigned	/03L-0:on 800304,gaseous Vent Flow Rate Monitors for Units 1 & 2 Shield Bldgs & Auxiliary Bldg Were Declared Inoperable.Cause Not Stated.Gaseous Flow Rate Monitors to Be Redesigned
05000327/LER-1980-010, Forwards LER 80-010/03L-0	Forwards LER 80-010/03L-0
05000327/LER-1980-011, Forwards LER 80-011/01T-0	Forwards LER 80-011/01T-0
05000327/LER-1980-011-01, /01T-0:on 800314,support Pin Insp at Foreign Plant Revealed Stress Corrosion Cracking in Westinghouse Supplied Pins.Insp Supported Westinghouse Ltr Informing Utils of Potential Hazard.Pins Will Be Replaced	/01T-0:on 800314,support Pin Insp at Foreign Plant Revealed Stress Corrosion Cracking in Westinghouse Supplied Pins.Insp Supported Westinghouse Ltr Informing Utils of Potential Hazard.Pins Will Be Replaced
05000327/LER-1980-012-03, /03L-0:on 800301,during Initial Core Loading,Rhr Flow Secured or Throttled Above Tech Specs.Caused by Intentional Increase to Allow Placement of Fuel Assemblies Near Loop 4 Hot Leg	/03L-0:on 800301,during Initial Core Loading,Rhr Flow Secured or Throttled Above Tech Specs.Caused by Intentional Increase to Allow Placement of Fuel Assemblies Near Loop 4 Hot Leg
05000327/LER-1980-012, Forwards LER 80-012/03L-0	Forwards LER 80-012/03L-0
05000327/LER-1980-013-03, /03L-0:on 800302,failed to Analyze Samples from Unit 2 Shield Bldg Exhaust.Caused by Misunderstanding of Surveillance Requirements.Lab Personnel Instructed on Sampling & Analysis Requirements	/03L-0:on 800302,failed to Analyze Samples from Unit 2 Shield Bldg Exhaust.Caused by Misunderstanding of Surveillance Requirements.Lab Personnel Instructed on Sampling & Analysis Requirements
05000327/LER-1980-013, Forwards LER 80-013/03L-0	Forwards LER 80-013/03L-0
05000327/LER-1980-014, Forwards LER 80-014/03L-0	Forwards LER 80-014/03L-0
05000327/LER-1980-014-03, /03L-0:on 800328,while Performing Check Source Test,Auxiliary Bldg Vent Noble Gas Monitor Had Module Power Problem & Failed in Svc.Caused by Zener Diode IN4740 & Transistor Fmps A13 Shorting Out	/03L-0:on 800328,while Performing Check Source Test,Auxiliary Bldg Vent Noble Gas Monitor Had Module Power Problem & Failed in Svc.Caused by Zener Diode IN4740 & Transistor Fmps A13 Shorting Out
05000327/LER-1980-015-03, /03L-0:on 800305,while in Mode 6 W/Fuel Loading Complete,Pressure Was Only Being Monitored in One Steam Generator & Reactor Pressure Vessel.Caused by Misunderstanding of Surveillance Instruction	/03L-0:on 800305,while in Mode 6 W/Fuel Loading Complete,Pressure Was Only Being Monitored in One Steam Generator & Reactor Pressure Vessel.Caused by Misunderstanding of Surveillance Instruction
05000327/LER-1980-015, Forwards LER 80-015/03L-0	Forwards LER 80-015/03L-0
05000327/LER-1980-016, Forwards LER 80-016/03L-0	Forwards LER 80-016/03L-0
05000327/LER-1980-016-03, /03L-0:on 800307,at Completion of Fuel Loading & W/Core Alterations Still underway,SI-65 Was Not Performed. Caused by Misinterpretation of Tech Specs by Personnel.No Corrective Actions Necessary	/03L-0:on 800307,at Completion of Fuel Loading & W/Core Alterations Still underway,SI-65 Was Not Performed. Caused by Misinterpretation of Tech Specs by Personnel.No Corrective Actions Necessary
05000327/LER-1980-017-03, /03L-0:on 800310,while in Mode 6,turbine Bldg Sump Monitor O-RM-90-212 Alarm Kept Coming In.Monitor Was Declared Inoperable.Caused by Malfunctioning Flow Switch Not Allowing Sufficient Flow Through Monitor	/03L-0:on 800310,while in Mode 6,turbine Bldg Sump Monitor O-RM-90-212 Alarm Kept Coming In.Monitor Was Declared Inoperable.Caused by Malfunctioning Flow Switch Not Allowing Sufficient Flow Through Monitor
05000327/LER-1980-017, Forwards LER 80-017/03L-0	Forwards LER 80-017/03L-0
05000327/LER-1980-018-01, /01T-0:on 800326,while in Mode 6 W/All Fuel Loaded,Exposed Cables Inside Containment Between Conduit & Penetrations Not Qualified to re-evaluated post-LOCA Max Dose Levels.Cables Shielded from Exposure to New Dose Level	/01T-0:on 800326,while in Mode 6 W/All Fuel Loaded,Exposed Cables Inside Containment Between Conduit & Penetrations Not Qualified to re-evaluated post-LOCA Max Dose Levels.Cables Shielded from Exposure to New Dose Level
05000327/LER-1980-018, Forwards LER 80-018/01T-0	Forwards LER 80-018/01T-0
05000327/LER-1980-019, Forwards LER 80-019/01T-0	Forwards LER 80-019/01T-0
05000327/LER-1980-019-01, /01T-0:on 800326,found Possibility of Not Maintaining Control Room Habitability Due to Leakage of Unfiltered Air.Possibly Caused by Isolation Dampers. Corrective Mods Planned	/01T-0:on 800326,found Possibility of Not Maintaining Control Room Habitability Due to Leakage of Unfiltered Air.Possibly Caused by Isolation Dampers. Corrective Mods Planned
05000327/LER-1980-020, Forwards LER 80-020/01T-0	Forwards LER 80-020/01T-0
05000327/LER-1980-020-01, /01T-0:on 800404,investigation Revealed That Several vendor-designed Pipe Supports Were Designed Utilizing Manufacturer Std 0.25-inch U-bolt Which Overstressed During Seismic Event.Caused by Design Error	/01T-0:on 800404,investigation Revealed That Several vendor-designed Pipe Supports Were Designed Utilizing Manufacturer Std 0.25-inch U-bolt Which Overstressed During Seismic Event.Caused by Design Error
05000327/LER-1980-021-03, /03L-0:on 800308,while in Mode 6,flow Rates from Auxiliary Bldg Ventilation Sys Flow Rate Monitor Were Not Recorded for Three Shifts.Caused by Misreading of Notation Used in Surveillance Instruction.Temporary Change Issued	/03L-0:on 800308,while in Mode 6,flow Rates from Auxiliary Bldg Ventilation Sys Flow Rate Monitor Were Not Recorded for Three Shifts.Caused by Misreading of Notation Used in Surveillance Instruction.Temporary Change Issued
05000327/LER-1980-021, Forwards LER 80-021/03L-0	Forwards LER 80-021/03L-0
05000327/LER-1980-022-03, /03X-2:on 800318,sample Isolation Valves 1-FCV-90-108,109,110,114,115 & 116 Closed,Isolating Radiation Monitors.Caused by Isolation of Nonessential Control Air to Sample Valves.Valves Reopened	/03X-2:on 800318,sample Isolation Valves 1-FCV-90-108,109,110,114,115 & 116 Closed,Isolating Radiation Monitors.Caused by Isolation of Nonessential Control Air to Sample Valves.Valves Reopened
05000327/LER-1980-022, Forwards LER 80-022/03L-0	Forwards LER 80-022/03L-0
05000327/LER-1980-023, Forwards LER 80-023/03L-0	Forwards LER 80-023/03L-0
05000327/LER-1980-023-03, /03L-0:on 800402,during Surveillance Testing, Diesel Generator 2A-A Feedbreaker Failed to Close.Caused by Power Contacts Being Dirty.Power Contacts Cleaned	/03L-0:on 800402,during Surveillance Testing, Diesel Generator 2A-A Feedbreaker Failed to Close.Caused by Power Contacts Being Dirty.Power Contacts Cleaned
05000327/LER-1980-024, Forwards LER 80-024/03L-0	Forwards LER 80-024/03L-0
05000327/LER-1980-024-03, /03L-0:on 800331,flow Switches on Radiation Monitors ORM-90-212 & 122 Found Inoperable.Caused by Small Particulate Matter in Monitored Liquid.Design Change Request Initiated.Weekly Preventive Maint Program Established	/03L-0:on 800331,flow Switches on Radiation Monitors ORM-90-212 & 122 Found Inoperable.Caused by Small Particulate Matter in Monitored Liquid.Design Change Request Initiated.Weekly Preventive Maint Program Established
05000327/LER-1980-025, Forwards LER 80-025/03L-0	Forwards LER 80-025/03L-0
05000327/LER-1980-025-03, /03L-0:on 800313 W/Unit 1 in Mode 6,O-RM-90-225 Condensate Demineralizer Effluent Line Was Taken Out of Svc for Maint.Caused by Weak Transistor.Transistor Replaced & Monitor Returned to Svc	/03L-0:on 800313 W/Unit 1 in Mode 6,O-RM-90-225 Condensate Demineralizer Effluent Line Was Taken Out of Svc for Maint.Caused by Weak Transistor.Transistor Replaced & Monitor Returned to Svc
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05000327/LER-1980-157, Forwards LER 80-157/03L-0

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Dear Mr. O'Reilly:

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