L-06-070, Request for Notice of Enforcement Discretion Loss of Supplemental Leak Collection and Release System Filters
05000327/LER-1980-093-01, /01T-0:on 800625,vent Duct in Temporary Air Lock Discovered Breaching Aux Bldg Integrity.Caused by Unauthorized Installation of Duct by Const Workers.Duct Removed,Hole Patched & Sealed
05000318/LER-1989-005-01, :on 890323,discovered That Snubber Functional Test Procedure to Satisfy Tech Specs 4.7.8.1.c & D Not Adequate.Caused by Lack of Adequate Control for Procedures. Rev Proposed to Facility Instruction CCI-104
05000338/LER-1999-006-01, :on 990904,potential for Safegurads Exhaust Flow to Bypass Charcoal Filter,Was Discovered.Caused by Degraded Damper.Plant Issue Rept Submitted for B Train of Savs Flow Rate.With
05000336/LER-1986-018-01, :on 861210,14 Hydraulic & 7 Mechanical Shock & Sway Suppressors Removed from Supports.Caused by Need to Reduce Snubbers.Snubbers Replaced W/Rigid Sway Struts.W/
05000361/LER-1984-075, :on 841130,during Routine Review,Found Check Valve Bypass Closed.Caused by Error in Procedure Checklist for Placing Alternate Electric Fire Pump in Svc.Procedure Revised to Include Valve on Checklist
05000302/LER-1985-001, :on 850212,auxiliary Bldg Exhaust Fans Taken Out of Svc for Mods to Ventilation Sys Dampers.Voluntary Rept Submitted to Document Use of Tech Spec 3.0.3 for Maint Activities
05000302/LER-1984-014, :on 840625 & 0322,auxiliary Bldg Exhaust Fans Taken Out of Svc in Order to Perform Mods to Ventilation Sys Dampers.Policy Memo Issued Stating Tech Spec 3.0.3 Should Not Be Entered for Maint W/O Permission
05000302/LER-1984-012, :on 840615,instrument Air Supply Line to Dampers for Auxiliary Bldg Exhaust Fans Broke.Caused by Large Support Structure Inadvertently Striking Line.Line Repaired & Work Request Issued
05000361/LER-1983-140-03, /03L-0:on 831027,local Controller Shutoff Switch for Electrically Driven Fire Pump P221 Discovered Open.Cause Could Not Be Determined.Switch Closed & Pump Operability Restored
05000334/LER-1983-022-03, /03L-0:on 830907,flow Rate of 36,056 Cfm Measured Through Train B Filter Bank.Caused by Plugged Prefilter. Prefilter Replaced
05000348/LER-1978-082-03, /03L-0 on 781025:B Train Penetration Room Filtration Sys Inoperable.Caused by Low Spring Tension on Filter Support Assembly
05000302/LER-1978-064-03, /03L-0:on 781125,during Routine Operation of Air Handling Fans AHF-14A&C,low Flow Condition Was Indicated. Cause Was Suction Shroud Breaking Loose & Carrying Into Fan Blade Assembly.Broken Blades AHF-14C Replaced & Rebalance
05000302/LER-1978-065-01, /01T-0 on 781218:during Routine Oper,Discovered That AHF-14C Was Overloaded & Was Secured to Attempt to Balance Air flow.AHF-14C Was Tripped During Restart & Cause Was Attributed to Not Allowing Sufficient Time for Restart
05000327/LER-1981-125-01, /01T-0:on 811029,auxiliary Bldg Gas Treatment Sys Declared Inoperable Due to Possibility of Seismic Event Causing Direct Path Through Pipe Chase on A1 Wall at Elevation 685 from Auxiliary Bldg to Environ
05000302/LER-1981-027-01, /01T-0:on 810508,plant Shutdown Upon Discovery That on 810505 More than One Filter Sys Had Been Removed from Svc for Maint.Caused by Failure of Procedures to Reflect Tech Spec Requirements
05000302/LER-1981-008-03, /03L-0:on 810204,during Charcoal Testing,Filter Sys AHFL-2D Methyl Iodide Removal Efficiency Was 92.14%. Caused by Atmospheric Pollutants & Normal Air Flow.Charcoal Cells Replaced W/New Impregnated Charcoal
05000327/LER-1980-184-01, /01T-0:on 801120,in Mode 1,at 94% Power,Auxiliary Bldg Gas Treatment Sys Was Declared Inoperable.Caused by Nitrogen Supply Line Being Run Under Railroad Door to Cask Loading Area,Preventing Door from Completely Closing
05000348/LER-1980-059-03, /03L-0:on 801004,B Train Exhaust Fan Failed to Start.Caused by Shorted Switchgear Auxiliary Relay Resulting in Blown Fuses.Relay & Fuses Replaced
05000302/LER-1980-039-03, /03L-0:on 800917,auxiliary Bldg Ventilation Exhaust Fan Failed.Caused by Failure of Two Blades in Fan Assembly.Fan Motor Was Repaired & New Fan Assembly Installed
05000336/LER-1980-011-03, /03L-0:on 800313,following Full Power Plant Trip, Two Broken Saddle Clamp Bolts Were Found on Hydraulic Snubber Hanger 490008 on Ms Lead to HP Turbine.Caused by Fatigue Cracking Due to High Vibration & Shear on Trips
05000327/LER-1980-080-03, /03L-0:on 800527,during Test on B Train of Auxiliary Bldg Gas Treatment Sys,Control Fuse Failed & Tripped Fan Motor Supply Breaker.Cause Unknown.Fuse Replaced & Sys Declared Operable
05000302/LER-1979-010-03, /03L-0 on 790125:during Routine Operations,Air Handling Fan Failed to Start.Caused by Faulty Overcurrent Timing Relay
05000302/LER-1978-070-03, /03L-0 on 781215:low Flow Condition Noted on Auxiliary Bldg Exhaust.Investigation Showed That AHF-14D Had Ejected All Blades.Caused by Possible Damage That Occurred During Event 78-064/03L-0
05000302/LER-1979-078-03, /03L-0:on 790815,in Mode 1,excessive Noise & Vibration Detected Emanating from Auxiliary Bldg Ventilation Exhaust Fans AHF-14B & 14D.Caused by Loose Motor Mounts on Fan AHF-14B.Mounts Tightened
05000335/LER-1993-002, :on 930128,discovered Inability of ECCS Ventilation to Maintain Negative Pressure in ECCS Pump Room & Rab.Caused by Ventilation Imbalance.Ventilation Dampers Readjusted & Surveillance Procedure Changed
05000412/LER-2006-002, Regarding Entry Into Technical Specification 3.0.3 Due to Inoperability of Both Trains of the Supplemental Leak Collection and Release System
05000335/LER-2004-002, Unit I Re Train B Emergency Core Cooling System Room Ventilation System Inoperable
05000302/LER-1983-044-01, While Switching from Air Handling Fans AHF-14B & D to AHF-14A & C Due to Low flow,AHF-14A & C Would Not Start.Caused by Failed Damper Solenoid Valve & Metal Fatigue
05000302/LER-1978-066-03, /03L-0 on 781208:during Surveillance Procedure SP-345,low Flow & Imbalance Fan Loads Were Experienced Due to Unknown Cause
L-2016-084, Response to Request for Additional Information Regarding License Amendment Request for Adoption of Technical Specifications Task Force (TSTF) Traveler TSTF-422, Revision 2, Change in Technical Specifications End States
05000361/LER-1983-148-03, /03L-0:on 831122,diesel Driven Fire Pump Starting Battery Found to Have Low Electrolyte Level & Pump P220 Declared Inoperable.Caused by Evaporation of Electrolyte. Battery Refilled & Station Procedure Revised