Pages that link to "NRC Form 336A"

The following pages link to NRC Form 336A:

Displaying 33 items.

• 05000321/LER-1989-011-02, :on 890901,personnel Made Aware That Procedures 34GO-OPS-013-1S & 2S Did Not Fully Verify Operability of Rod Worth Minimizer as Required by Tech Spec.Caused by Procedural Error.Procedures Revised (← links)
• 05000483/LER-1989-011-01, :on 890905,ESF Containment Purge,Control Room Ventilation & Fuel Bldg Ventilation Isolations Received. Caused by Failed 15-volt Dc Power Supply in Train B ESF Cabinet.Power Supply Replaced & Tested (← links)
• 05000423/LER-1998-016, :on 980223,potential Air/Gas Intrusion in Chemical & Volume Control Sys Was Noted.Caused by Inadequate Initial Design.No Cause for Corrective Actions Because Both Flow Paths Were Operable (← links)
• 05000333/LER-1989-006-01, :on 890419,standby Liquid Control Sys Declared Inoperable When Pump Discharge Accumulator Nitrogen Precharge Was 0 Psig.Caused by Slow Leak in Charging Connector Spring Loaded Valve.Bladder Repaired (← links)
• 05000293/LER-1998-005, :on 980331,supports for RHR Quadrant Coolers Were Found Not to Be Seismically Qualified.Caused by Lack of Comprehensive Original Design of Seismic Stability.Approved Temporary Mod 98-06 Was Approved at Orc (← links)
• 05000301/LER-1989-003-01, :on 890712,level Channel 2LE-934 Declared Inoperable & Fill Operation Suspended When Channel Indicated Spuriously.Caused by Moisture Intrusion Between Halar Insulator & Sensing Rod.Detector Replaced (← links)
• 05000424/LER-1989-009-01, :on 890313,radiation Monitor Spiked High, Causing Containment Ventilation Isolation & Entry Into Tech Spec 3.3.2.Table 3.3-2.Caused by Detector Tube Failure.Tube Replaced & Monitor Operated in Bypass Mode (← links)
• 05000395/LER-1987-019, :on 870730,design Deficiency Discovered in Instrument Air Sys.Caused by Misapplication of Check Valves Installed on Outside Air Intake Dampers.Control Circuitry Interlocks Jumpered Pending Permanent Mods (← links)
• 05000498/LER-1987-015, :on 871121,cooldown Initiated Due to Inoperability of Essential Chiller Units 11C & 12A.Caused by Inadequate Protection of Equipment Controls.Caution Tags Posted & Operator Logs Revised (← links)
• 05000278/LER-1998-003-03, :on 980328,identified Failure to Meet TS for IST Stroke Timing of Msivs.Caused by Incorrect Interpretation of Required Testing Frequency.Reset Subject Surveillances to Appropriate TS Frequency (← links)
• 05000364/LER-1987-004-01, :on 871113,steam Generator Tube Degradation Observed.Investigations & Evaluations Performed Identified Four Areas Where Tube Degradation Observed.Tubes Have Been Plugged as Required & Listed Actions Taken (← links)
• 05000277/LER-1989-002-01, :on 890202,determined That Several Conditions Found During Analysis of Unsuccessful Special Test of Emergency Cooling Sys May Inhibit Function of Sys Needed to Maintain Safe Shutdown (← links)
• 05000282/LER-1998-006, :on 980319,equipment Discrepancy Was Confirmed for Electrical Equipment Associated w/122 CR Outside as & Steam Exclusion Damper CD-34177.Caused by Failure to Find Location of CD-34177.Will Correct Documents (← links)
• 05000327/LER-1997-012-01, :on 970801,manual Reactor Tripped Due to Loss of Control Air.Caused by Corrosion Products (Rust Debris) Inhibiting Full Closure of One of six-inch Gate Valves. Isolated Breached Control & Svc Air Sys Header (← links)
• 05000298/LER-1987-014, :on 870518,during Plant Startup After Unscheduled Shutdown,High Reactor Water Conductivity Led to Manual Scram.Caused by Main Condenser Tube Leakage.Tube Leak Checking & Plugging of Faulty Tubes Completed (← links)
• 05000278/LER-1999-002-02, :on 990406,safeguard Sys to Unrelated Door Was Inadvertently Disabled by Security Alarm Station Operator. Caused by Noncompliance with Procedures & Less than Adequate Shift Turnover.Briefed Personnel on Event.With (← links)
• 05000278/LER-1999-001-03, :on 990312,ESF Actuation of Rcics Occurred Due to High Steam Flow Signal During Sys Restoration.Temporary Change to Restoration Procedure Was Initiated to Open RCIC Outboard Steam Isolation Valve in Smaller Increments (← links)
• 05000412/LER-1999-002-01, :on 990305,discovered Potential Damage to Charging HHSI Pumps Due to Inadequate pre-fire Plan Procedure Guidance.Caused by Inadequate Analysis in 1987. Procedures Revised Addressing Subj Issue.With (← links)
• 05000249/LER-1987-002-09, :on 870225,while Unit Operating at 87% Power, HPCI Sys Discovered Inoperable.Caused by Oil Pressure Regulation Valve Failure.Similar Event Occurred on 870313. Limits of PS4 Reset to 60 Psig Increasing (← links)
• 05000281/LER-1999-001-02, :on 990301,RPS Relay Not Placed in Trip Resulted in Violation of TS 3.7.Caused by Lack of Procedural Guidance.Developed New Procedure to Provide More Explicit Instructions for Placing Stop Valve in Relay Trip (← links)
• 05000413/LER-1986-054, :on 860927,containment Purge (CP) Sys Inadvertently Tripped Twice.Cause Unknown.Cp Trip Reset Each Time & CP Reinitiated (← links)
• 05000278/LER-1998-005-03, :on 981025,inadvertent Unit 3 Electrical Bus E33 Trip (Esfa) During Performance of Unit 2 Electrical Bus E32 Surveillance Test Was Noted.Caused by Personnel Error. Sp S12M-54-E32-XXF4 Was Completed.With (← links)
• 05000277/LER-1998-006-02, :on 980915,automatic RWCU Isolation Occurred While Placing RWCU Sys in Svc.Caused by Unexpected Surge of Water.Procedure Change Was Initiated to Open MO-2-12-74 & RWCU Sys Was Successfully Returned to Svc.With (← links)
• 05000277/LER-1998-005-02, :on 980824,noted Failure to Meet TS Actions for Suppression chamber-to-drywell Vacuum Breaker Not Being Fully Seated.Caused by Personnel Failing to Take All TS Required Actions.Temporary Procedure Changes Were Made (← links)
• 05000278/LER-1998-004-03, :on 980820,automatic RWCU Isolation Occurred While Placing B RWCU Sys Demineralizer in Svc.Caused by less-than-adequate Control of Equipment.Isolated B Demineralizer & Returned RWCU Sys to Svc (← links)
• 05000293/LER-1997-009, :on 970417,RCIC Sys Became Inoperable.Caused by Gear Change in Motor Operator of RCIC Sys Flow Test Valve. RCIC Sys Procedures for Potential Rev Reviewed (← links)
• 05000382/LER-1997-015, :on 970418,ultimate Heat Sink Did Not Incorporate Conservative Assumptions.Caused by Design Errors Associated W/Original Design of Ultimate Heat Sink. Operability Evaluation Completed on 970404 (← links)
• 05000336/LER-1994-035, :on 941102,discovered That Roving Fire Watch Established for Breached Electrical Penetration When Requirement for Continuous Fire Watch.Caused by Personnel Error.Continuous Fire Watch Established (← links)
• 05000336/LER-1994-038, :on 941026,identified That Local Leak Rate Testing Not Adequately Performed on Containment Penetrations.Caused by Personnel Error.Revs to Surveillance Procedure Sp 2605D Initiated (← links)
• 05000318/LER-1994-005-01, :on 940924,reactor Trip Experienced Due to Main Turbine Governor Valve Opening.Wire on 21 Governor Valve LVDT Tightened & Wiring on All Other Unit 2 Main Turbine Throttle & Governor Valves Checked (← links)
• 05000325/LER-1991-005, :on 910227,nonconservative Setpoint for High Steam Flow Isolation Instruments Resulted in Manual HPCI Isolation.Due to Error Induced by Formation of Loop Seals. Pressure Sensing Line Rerouted (← links)
• 05000369/LER-1990-008-01, :on 900430,radiation Monitor for Contaminated Parts Warehouse Ventilation & Sampler Min Flow Device Declared Inoperable.Caused by Personnel Error.Appropriate Procedures Enhanced to Prevent Recurrence (← links)
• 05000334/LER-2006-001, Re Main Steam Safety Valve Relief Tests Exceeded Technical Specification Required Setpoint Tolerance (← links)