RA-17-072, License Amendment Request - Proposed Defueled Technical Specifications and Revised License Conditions for Permanently Defueled Condition
05000260/LER-1994-010, :on 941005,loss of ECCS Division II Instrumentation Resulting from Blown Fuse in Atu Inverter. Caused by a Failed Capacitor.Blown DC Input Fuse Was Replaced
05000293/LER-1980-078-01, /01T-0:on 801030,review of Results of Salt Svc Water Sys Per IE Bulletin 79-14,indicated Design Deficiency. Caused by Installation of Salt Svc Water Anchor Point Outside Area Tornado Missile Barrier Protection
05000219/LER-1983-013, Forwards LER 83-013/01T-0.Detailed Event Analysis Encl
JAFP-89-0214, Responds to NRC Insp Rept 50-330/88-29 Re Monitoring of Pneumatic Supply Pressure to Safety Relief Valves & Issue Concerning Deficiencies in Tech Specs for LPCI Sys. Corrective Actions:Operating Procedure Will Be Updated
B13151, Proposed Tech Specs 3/4.1, Reactivity Control Sys
B12676, Forwards Response to 870709 Generic Ltr 87-12 Re Loss of RHR While RCS Partially Filled.Description of Circumstances & Conditions Under Which Facilities Would Enter Draindown Process W/Rcs Partially Filled Encl
JPN-99-030, Forwards Application for Amend to License DPR-59,proposing Change to TS 3.5.B.3 & Associated Bases to Extend LCO Allowable Out of Service Time for RHRSW Sys from 7 Days to 11 Days
SVP-99-102, Summary Rept of Changes,Tests & Experiments Completed, Covering Period 990201-0430. with
B17621, Application for Amend to License DPR-21,reflecting Permanently Defueled Condition of Unit 1,Tech Specs Administrative Controls Section as Allowed by Guidance Contained in NRC Administrative Ltr 95-06
SVP-98-328, Summary Rept of Changes,Tests & Experiments Completed, Including SEs Covering Period of 971001-980715,per 10CFR50.59 & 10CFR50.71(e).With
B11689, Application for Amend to License DPR-21,revising Tech Specs to Define Refuel Condition & Operability Requirements of Sys During Refuel & Shutdown Conditions.Fee Paid
JAFP-96-0379, Forwards Addl Info Re Proposed Amend to TSs Re Inservice Leak & Hydrostatic Testing Operation,Per NRC Request in Recent Telcons
NG-94-1162, Requests Withdrawal of TS Change Request Re Editorial Change to Containment Spray TS 3.5.B
JPN-89-037, Forwards Application for Amend to License DPR-59,revising Tech Specs to Clarify That 30-day Allowable out-of-svc Time Applies to RHR Svc Water Sys Only & Not to RHR Pumps or Spray Loop
05000260/LER-1989-015, :on 890523,absence of Air Flow in RHR Pump Room Cooler Fan Duct 2C Discovered.Fan Verified Rotating Backwards.Caused by Personnel Error.Repairs Made by Rolling Cables & Verifying Proper Direction
05000260/LER-1989-011, :on 890404,RHR Svc Water Pump Room A-1 Sump Pump Declared Inoperable Due to Problem W/Level Switch Controlling Pump Operation.Caused by Sys Outages in Progress.Rhr Loop II Declared Operable
05000260/LER-1989-012, :on 890405,discovered That RHR Pump Breaker Not Racked Out as Required.Caused by Written Special Requirements Not Being Transmitted to Shift Personnel Prior to Board Transfer
05000260/LER-1989-015-01, :on 890523,discovered No Air Flow in RHR 2C Pump Room Cooler Fan Duct.Caused by Personnel Error.Proper Fan Rotation Established & Verified.Min Qualification for Personnel Performing Const Test Initiated
05000219/LER-1986-025, :on 860914,4,160-volt Electrical Bus Grounded,Resulting in Actuation of Several Esfs.Caused by Technician Error.Technicians Will Receive Addl Training in Installation & Use of Ground Breakers
05000296/LER-1986-009-03, :on 860908,Loop I of RHR Sys Declared Inoperable After Damaged Hanger Discovered.Caused by High Vibration in Shutdown Cooling Mode.Hanger Repaired & Design Mod Will Be Performed
05000296/LER-1986-008-03, :on 860905,LPCI Motor Generator Set Tripped from Shorted Generator Coil,Reducing RHR Capability.Damaged Generator Removed & Sent to Mfg for Repairs
05000254/LER-1987-008-07, :on 870508,RHS Svc Water Sys Found Operating Outside of Plant Design Specs,Based on 870309 Discovery of Sheared Bolts on Concrete Expansion Anchor Plate.Cause & Repair Will Be Addressed in Supplemental Rept
05000296/LER-1986-011-03, :on 861023,plant Electrician Discovered LPCI Motor Generator (MG) 3DA Uncoupled.Caused by Inadequate Procedural Detail & Acceptance Criteria in Plant Maint Instructions.Lpci MG Set Recoupled
05000219/LER-1986-018, :on 860807,secondary Containment Leak Rate Test Failed to Meet Acceptance Criteria.Caused by Missing Cap on Svc Water Overboard Line in Seal Well.Cap Replaced & Test Successfully Completed
05000259/LER-1986-036-01, :on 861208,diesel Generator 1A Declared Inoperable During Performance of Monthly Surveillance Instruction,Resulting in Tech Spec Noncompliance.Caused When RHR HX Mistakenly Removed from Svc
05000245/LER-1988-007-01, :on 880908,discovered Emergency Svc Water self- Cleaning Strainer Drive Motor B 480-volt Breaker in Tripped Position.Caused by Failure of Packing Gland Follower Bolting on Strainer.Level Switch Installed
05000296/LER-1986-004, :on 860125,Tech Spec 3.5.C.7 Re Availability of Normal & Emergency Power Violated When RHR Loop II & Diesel Generators Removed from Svc.Personnel Counseled & Tech Spec Clarification Proposed
05000296/LER-1985-009-04, :on 850320,during Investigation of Motor Noise, RHR Pump Motor 3D Failed.Caused by Failure of Lower Radial Guide Bearing Resulting in Failure of Stator Winding.On 850218,unrelated RHR Pump Motor Also Failed
05000271/LER-1996-006, :on 960214,potentially Inoperable RHR Svc Water Valves Noted.Caused by mfg-fabrication Deficiency.Priority Work Orders Written to Inspect & Torque Bolts on Valves.W/
05000263/LER-1985-004-01, :on 850201,during Quarterly Valve Exercising, Flow Established Through RHR Intertia Line While Reactor in Run Mode.Caused by Improper Procedure.Procedure Revised
05000333/LER-1996-002-01, :on 960212,potential Common Mode Failure of Circuit Breakers in Both Safety Divisions Occurred Due to Design or Installation Error.Replaced Contacts in Failed Circuit Breakers
05000219/LER-1984-009-01, :on 840922,secondary Containment Integrity Degraded While Contractor Personnel Opened Both Doors of Reactor Bldg Personnel Access Airlock to Transport Pipe. Caused by Personnel Error.Personnel Counseled
05000293/LER-1995-010, :on 951103,individual Salt SWS Pumps Failed to Meet Sr.Caused by Failure to Correctly Translate Basis of TS of 55 Feet TDH to Acceptance Criteria in IST Test.Approved Calculation M630
05000265/LER-1995-006-07, :on 951004,feed Breaker for Motor Control Ctr at Switchgear Tripped from Current Overlaod.Caused by Trip Setting Too Low for Given Plant.Motor Control Ctr Restored & Exit LCO
05000333/LER-1984-001, :on 840118,during Surveillance Testing for Inoperative B Side Suppression Pool Cooling & Spray Isolation Valve,Rhr Svc Water Pump C Failed.Caused by Worn Impeller Collet.Valve Repaired
05000237/LER-1983-156-03, /03L-0:on 831121,LPCI Valve 1501-3A Failed to Open Remotely Upon Starting Component Cooling Svc Water Sys A. Caused by Loosening of Limitorque Operator Thrust Washer Locknut.Washer Adjusted
05000219/LER-1983-021-03, /03L-0:on 831012,loss of Main Bus 1A & Emergency Bus 1C Rendered One Standby Gas Treatment Sys Train Inoperable.Stack Gas Sampling Capability Lost for Approx 3 Had Pump a Shutdown Due to Loss of Power
05000271/LER-1991-015, :on 910614,containment Isolation Valve Failed to Closed Due to Erosion/Corrosion & Displacement of screw- in Seat.Valve Repaired by Welding New Seat Into Valve Body
05000254/LER-1983-029-03, /03L-0:on 830711,while Repacking 1-1001-65B RHR Svc Water Pump,Pump Inboard Bearing Surfaces Found Pitted & Imbedded W/Dirt.Pump Packing Sleeve Slightly Worn.Caused by Leakage Through Worn Packing & Packing Sleeve
05000254/LER-1983-028-03, /03L-0:on 830715,RHR Return to Suppression Chamber valve,MO1001-36A,taken Out of Svc for Repairs Rendering Loop a Containment Cooling Inoperable.Caused by Breaker Trip Setting Too Low.Breaker Replaced
05000265/LER-1983-011-03, /03L-0:on 830711,circuit Breaker Overloads Tripped Repeatedly While Attempting to Open Valve Mo 2-1001-36B from Control Room.Caused by Excessive Close Torque Setting. Overloads Replaced & Torque Decreased
05000296/LER-1983-001-03, /03L-0:on 830107,during Surveillance Testing Drywell Containment Spray Isolation Valve 3-FCV-74-74 Failed to Operate.Caused by Fractured Worm Shaft Clutch Gear Due to Impact Load.New Clutch Gear Installed
05000293/LER-1991-002, :on 910211,one Salt Svc Water Sys Pump Not Surveillance Tested Per Tech Spec.Caused by Procedural Error.Procedure Revised
05000265/LER-1982-016-03, /03L-0:on 820729,RHR Svc Water Pump 2-1001-65B, Removed from Svc to Adjust Inboard & Outboard Booster Pump Seal Packing to Stop Minor Leakage.Caused by Seal Packing Wear Due to Abrasives in River Water.Seal Packing Adjusted
05000245/LER-1982-014, Forwards LER 82-014/03L-0.Detailed Event Analysis Encl
05000245/LER-1982-014-03, /03L-0:on 820614,emergency Svc Water Pump D Failed to Meet Min Pump Discharge Pressure During Operational Readiness Test.Caused by Accumulation of Marine Growth & Mussels on Pump & Suction Volutes.Pump Cleaned
05000245/LER-1982-008, Forwards LER 82-008/03L-0.Detailed Event Analysis Encl
05000245/LER-1982-010-03, /03L-0:on 820413,while Performing Emergency Svc Water Sys Operational Readiness Test,Valve 1-LPC-4A Failed to Open When Emergency Svc Water Pumps Started.Caused by Excessive Play in Potentiometer.Slider Adjusted
05000245/LER-1982-010, Forwards LER 82-010/03L-0.Detailed Event Analysis Encl
05000219/LER-1981-044, Forwards LER 81-044/03L-0.Detailed Event Analysis Encl
HL-3357, Responds to NRC Re Violations Noted in Insp Rept 50-321/93-06.Corrective Actions:Issued plant-wide Directive & Operating Order
05000219/LER-1982-009, Forwards LER 82-009/03L-0.Detailed Event Analysis Encl
05000259/LER-1982-012-03, /03L-0:on 820125,RHR Pump B & D Min Flow Bypass Valve 1-FCV-74-30 Failed to Close During Surveillance Test. Caused by Failed Coil for Relay 10A-K108B.Coil Replaced
05000245/LER-1982-002, Forwards LER 82-002/03L-0.Detailed Event Analysis Encl
05000245/LER-1982-002-03, /03L-0:on 820115,B Emergency Svc Water Pump Declared Inoperable After Failure to Meet Min Pump Discharge Pressure.Caused by Marine Fouling of Pump Suction W/Possible Slippage of Second Stage Impeller to Pump Shaft
05000219/LER-1981-030, Forwards LER 81-030/01T-0.Detailed Event Analysis Encl
B13758, Requests Temporary Waiver of Compliance from TS 3.5.B.5 Re LCO for Containment Cooling Subsystem.Request Based on 910222 Inoperability of LPCI Pump B Due to Increased Level of Vibration in Motor
BECO-90-041, Application for Amend to License DPR-35,changing Tech Spec 3/4.5, Core & Containment Cooling Sys to Reduce Unnecessary Wear Imposed by Excessive Surveillances on Operable Sys Components & Out of Svc Time to 72 H
BECO-90-017, Forwards Operability Evaluation Re Salt Svc Water Pumps P208 B,C,D & E,Per 900117 Telcon.Evaluation Concluded That Salt Svc Water Pumps P208 B,C,D & E Operable & Tech Spec 3.5.B.1 Requirements Met
05000321/LER-1980-118-03, /03L-0:on 801212,1E11-FO15B Valve,Rhr Inboard Injection,Was Leaking.Caused by Cracks on Seating Surfaces of Valve Disc.Valve Seats Lapped & New Disc Installed
05000260/LER-1980-053-03, Discovered Leak on Heat Exchanger During Steady State Operation.Caused by Leaking Inner Head Gasket on RHR Heat Exchanger Due to Loose Flange Nuts.Gasket Replaced & New Nuts W/Locking Tabs Installed
05000259/LER-1980-043-03, /03L-0:on 800411,during Test Instruction 36A, W/Unit at 85% power,1A RHR Heat Exchanger Was Found Leaking. Caused by Six Loosened Lock Nuts.Gasket Replaced & Tested Per Mechanical Maint Instruction 49
05000333/LER-1980-028-03, /03L-0:on 800324,during Normal Operation,Loop B of Torus Cooling Was Declared Inoperable.Caused by Failure of Base Plate for Hanger H10-49A Per IE Bulletin 79-02. Temporary Repair Restored Sys to Operable Status
05000237/LER-1984-007-06, :on 840628,during Hot Standby,Fuse 2330-702 Removed,Causing Loss of Automatic Control for Lpci/Component Cooling Water Sys HX Delta P.Caused by Wiring Sys Using Same Fuse Circuits
05000321/LER-1979-101-03, /03L-0:on 791212 & 13,w/reactor in Run Mode & on 791216,w/reactor in Cold Shutdown,Diesel Generator C Failed to Start.Apparently Caused by Particles of Rust in Governor Booster Servo.Servo Cleaned & Reinstalled
05000321/LER-1979-100-03, During Steady State Power Operation,Rhr B Loop Heat Exchanger Pressure Indicator E11-R606B Showed Excessive Pressure Due to Leaking LPCI Containment Isolation Valve.Caused by Normal Valve Wear
05000265/LER-1979-025-03, /03L-0:on 791026,during Lcpi Motor Operated Valve Operability Test,Motor Control Breaker Tripped on Thermal Overload.Caused by Tripping Circuit Breaker.Motor Meggared
05000260/LER-1980-034-03, /03L-0:on 800815,w/unit at 94% Power in Steady State Operation,Rhr Heat Exchange 2C Found Leaking During TI-36A.Caused by Loose Lock Nuts & Full Nuts Due to Thermal Cycling & Vibration Resulting in Gasket Leak
05000296/LER-1980-016-03, /03L-0:on 800513,following Completion of Flow Test on Diesel Generator Heat Exchanger 3D,cooling Water Found Inadequate Per Tech Spec 3.5.B.2.Apparently Caused by Restriction in Cooling Water Piping.Water Lines Flushed
05000260/LER-1980-035-03, /03L-0:on 800830,during Normal Operation While Performing TI-36,increase in Pressure on Shell Side of RHR Heat Exchanger 2D Was Detected.Caused by Leaking Check Valve Between Heat Exchangers
05000296/LER-1980-006-03, /03L-0:on 800217,w/unit at Steady State Operation, Emergency Equipment Cooling Water Flow Did Not Meet Min Flow of 4 Gpm.Caused by Shells & Mud Preventing Adequate Flow Through Residual Heat Removal Pump 3B Seal Cooler Valve
05000260/LER-1980-011-03, During Hot Shutdown, 480-volt Rmov Board 2B Failed to Transfer Properly During Manual Transfer.Caused by Dirty Moveable Contacts on Normal Breaker.Contacts Cleaned & Board Transferred
05000296/LER-1980-002-03, /03L-0:on 800117,while Performing Surveillance Instruction 4.5.B.1.d,residual Heat Removal Sys Flow Control Valve FCV.74-73 Tripped in mid-position.Caused by Valve Stem Lubricant Losing Lubricity,Causing Force on Motor
05000296/LER-1980-015-03, /03L-0:on 800512,3B RHR Pump Cooling Water Flow Determined Inadequate Per TS 3.5.B.1(2) & 3.5.BB.5.Caused by Apparent Restriction in Cooling Water Piping.Exchanger Removed & Flushed
05000293/LER-2016-005, Regarding Ultimate Heat Sink and Salt Service Water System Declared Inoperable
05000293/LER-2015-004-01, Regarding 480V Bus B6 Auto Transfer Function Degraded
05000293/LER-2015-006, Regarding Ultimate Heat Sink and Salt Service Water System Declared Inoperable
05000293/LER-2013-007, Regarding Ultimate Heat Sink and Salt Service Water System Declared Inoperable
05000293/LER-2010-001, Regarding Single Train of Reactor Building Closed Cooling Water System Inoperable for Time Period Exceeding Technical Specification Limits
NUREG-1433, Part 1- Edwin I. Hatch, Units 1 & 2, License Amendments, Replace Current Technical Specification & Associated Bases
05000277/LER-1986-020-01, :on 860817,failure to Maintain Cold Shutdown Conditions & Exceeding Torus Vol Limit Discovered.Caused by Poor Planning of Proposed Operation by Station Supervision. GP-12 Revised
05000296/LER-1985-009, :on 850320,RHR Pump Motor 3D Began to Smoke During Investigation of Unusual Motor Noise.Caused by Failure of Lower Radial Guide Bearing Resulting in Stator Winding Failure
05000293/LER-1996-008, :on 960918,RBCCW Heat Exchanger Was Declared Inoperable.Caused by through-wall Longitudinal Crack in Channel Cylinder Near Bottom on Lower Partition Plate. Cracks in Walls Repaired
05000219/LER-1984-007, :on 840402,standby Gas Treatment Sys (SGTS) II Not Tested within Tech Spec Limits.Caused by Failure of Emergency Power Supply for SGTS I.Change to Tech Specs Under Investigation