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ML23033A57112 January 2023Comanche PeakComment (538) of Joy Baker on Notice of Intent to Conduct Scoping Process and Prepare Environmental Impact Statement; Vistra Operations Company LLC; Comanche Peak Nuclear Power Plant, Units 1 and 2
ML15287A46530 April 2015Dresden2015 Dresden Station Initial License Examination Form ES-401-6
ML15287A46330 April 2015Dresden2015 Dresden Station Initial License Examination Form ES-301-6
ML15287A46830 April 2015Dresden2015 Dresden Station Initial License Examination Proposed Admin JPMs
ML20087E28326 July 1995ColumbiaPerformance Enhancement Strategy 1995
ML20029E10929 December 1993SummerRev 2 to Quality Sys Procedure QSP-213, NDE Inservice Exam Program.
ML20029E11029 December 1993SummerRev 2 to Quality Sys Procedure QSP-211, Inservice Exam for Component Supports.
ML20029E11129 December 1993SummerRev 2 to Quality Sys Procedure QSP-210, ISI Nde.
ML20029E11329 December 1993SummerRev 3 to Quality Sys Procedure QSP-214, Guidelines for ASME Activities.
ML20059D34517 December 1993ClaiborneComment Supporting Claiborne Enrichment Ctr
ML17290A44731 May 1993ColumbiaMonthly Operating Rept for May 1993 for WNP-2. W/930601 Ltr
ML17290A28630 April 1993ColumbiaMonthly Operating Rept for Apr 1993 for WNP-2.W/undated Ltr
ML17290A24419 April 1993ColumbiaLER 93-013-00:on 930318,design Error Identified by Engineers Working in Component Safety Calssification Program.Caused by Deficiency in Original Design of Cis.Rcic Pump Isolation Valve from Suppression de-energized.W/930419 Ltr
ML17290A1799 April 1993ColumbiaLER 93-001-00:on 930310,determined That Previously Performed Surveillance Testing Had Not Been Fully Adequate to Demonstrate Operability of Hoists.Caused by Error by Nonlicensed Util Personnel.Calibration revised.W/930409 Ltr
ML17290A1789 April 1993ColumbiaLER 93-012-00:on 930311,Sys Engineer Learned That Fast Open Function of Main Turbine BPV Was Not Operable.Caused by Less than Adequate Surveillance Procedures.No Immediate Corrective Actions Were required.W/930409 Ltr
ML17290A1695 April 1993ColumbiaLER 93-010-00:on 930304,nonconforming Conditions Noted in TS Surveillance Improvement Project Covering end-of-cycle Recirculation Pump Trip & Turbine Throttle Valve Closure. Power Reduced to 92% & Procedures revised.W/930405 Ltr
ML17290A1641 April 1993ColumbiaForwards Rev 1 to LER 91-005,documenting Alternate Corrective Action,Involving Manual Sequencing Implemented for Containment Monitoring Sys (Cms).Corrective Action in Rev 0 Stated That CMS Would Be Placed in Automatic Mode
ML17290A1821 April 1993ColumbiaApplication for Amend to License NPF-21,adding Note to Spec 3.7.3, RCIC Sys to Allow for RCIC to Be Assumed Operable W/Rcic Suction Aligned to Condensate Storage Tank
ML17290A19231 March 1993ColumbiaMonthly Operating Rept for Mar 1993 for Washington Nuclear Plant 2.W/undated Ltr
ML17290A15826 March 1993ColumbiaRequests Waiver of Compliance from Portion of LCO of TS 3.7.3, RCIC to Extend Spring 1993 Maint & Refueling Outage Until 930517 or Beginning of 1993 Refueling Outage When RCIC Operability No Longer Required,Whichever Occurs First
ML17289B27125 March 1993ColumbiaForwards Info Pertaining to Significant Corrective Maint Performed on safety-related Equipment During 1992,per Reg Guide 1.16
ML17289B23219 March 1993ColumbiaLER 93-009-00:on 930217,concluded That Existence of Noncondensible Gases in Ref Leg of RPV Instrumentation Could Have Affected Point at Which RPV Level 3 Isolation Actuated.Caused by Design deficiency.W/930319 Ltr
ML17289B22818 March 1993ColumbiaLER 91-019-01:on 910716,determined That Failure to Rept Five Periods in Excess of 30 Days of Inoperability of Rv Seismic Monitor in Violation of Ts.Caused by Inadequate Procedures. Procedures revised.W/930318 Ltr
ML17289B25018 March 1993ColumbiaInforms NRC That Seismic Monitor Will Remain at Present Location & Required 10 Day Rept Will Be Submitted Each Time Monitor Is Inoperable for More than 30 Days,Per Change Delineated in Ref Special Rept,Ler 91-09 & LER 91-09-01
ML17289B22315 March 1993ColumbiaLER 93-008-00:on 930211,determined That Methods Used to Demonstrate Operability for Div 1,2 & 3 Emergency Logic Circuits Inadequate to Satisfy Ts.Caused by Inadequate Review & Evaluation.Procedures developed.W/930315 Ltr
ML17289B21512 March 1993ColumbiaLER 93-007-00:on 930210,low RPV Level Reactor Scram Initiated by RPS Due to Low Water Level Condition.Caused by Loss of Rfw Pump 1B Due to Loss of Turbine Governor Control. Governor Actuators replaced.W/930312 Ltr
ML17289B2088 March 1993ColumbiaLER 93-006-00:on 930206,manual Reactor Scram Initiated Due to Reactor Recirculation Pump Trip While Operating in Area of Increased Awareness.Caused by Component Design Not within Parameter Limits.Procedures changed.W/930308 Ltr
ML17289B1964 March 1993ColumbiaLER 93-005-00:on 930202,inadequate Documentation & Review of Operability Status Results in Unavailability of Wetwell Purge Exhaust Valve.Caused by Technical Inadequacies.Wetwell Valves Adjusted & Returned to Operable status.W/930304 Ltr
ML17289B2272 March 1993ColumbiaProvides NRC W/Early Info Re Actions Taken by Util to Address Existence of Noncondensible Gases in Reactor Pressure Vessel Narrow Range Instrumentation.Condition Identified During Review of 930121 Reactor Scram
ML17289B22628 February 1993ColumbiaMonthly Operating Rept for Feb 1993 for Washington Nuclear Plant 2.W/undated Ltr
ML17289B18426 February 1993ColumbiaLER 93-004-00:on 930127,determined That Two Inadequately Installed Fuses Could Have Caused Loss of RHR Capability During Seismic Event.Caused by Improper Installation of Fuses.Fuse Deficiencies Will Be evaluated.W/930226 Ltr
ML17289B18222 February 1993ColumbiaCorrected Forwarding Ltr for LER 91-006-01,superceding 930217 Ltr Which Contained Incorrect Rept Number
ML17289B17922 February 1993ColumbiaLER 93-003-00:on 930121,determined That Under Certain Ac Electrical Distribution Sys Alignments,Fault Could Result in Unavailability of Both Offsite Power Sources.Caused by Inadequate Sys Analysis.Delay Times revised.W/930222 Ltr
ML17289B17012 February 1993ColumbiaLER 90-017-01:on 900830,HPCS Sys Declared Inoperable Due to Crack in 125 Volt Dc Battery Cell Jar.Caused by Functional Design Deficiency.Plant Mod Being Developed to Change HPCS Battery Racks & encls.W/930212 Ltr
ML17289B16912 February 1993ColumbiaLER 93-001-00:on 930113,determined That Both Trains of Suppression Pool Cooling of RHR Sys Inoperable on 900806 Due to Design Deficiency of RHR Sys.Plant Procedure PPM 2.4.2, RHR Will Be Changed by 930301.W/930212 Ltr
ML17289B16812 February 1993ColumbiaLER 88-008-01:on 880318,determined That 11 Plant TS Fire Penetration Seals Discovered Impaired.Caused by Inadequate Control of Fire Seal Penetrations.Maint Work Requests Written to Repair penetrations.W/930212 Ltr
ML17289B16712 February 1993ColumbiaLER 88-031-01:on 880902,determined That Due to Single Failure CR HVAC Sys Could Operate in Recirculation Mode. Caused by Lack of Communication Between Ae Design Groups.Cr HVAC Recirculation Mode of Operation analyzed.W/930212 Ltr
ML17289B16612 February 1993ColumbiaLER 89-006-01:on 890316,entry Into TS 3.0.3 Caused by Errors Discovered in Calculation for Dose Received by CR Operators During Loca.Cr Calculation Revised to Assume Zero Percent Mixing of Leakage from containment.W/930212 Ltr
ML17289B16512 February 1993ColumbiaLER 88-005-01:on 880208,determined That CREFS Train B Bypass Flow Not in Compliance W/Ts.Caused by Installation Deficiency.Engineering Evaluations Performed to Determine Effects of Minor Sys Changes on Bypass flow.W/930212 Ltr
ML17289B17111 February 1993ColumbiaLER 91-006-01:on 910412,plant Shutdown Due to Inoperability of Div 1 Edg.Caused by Inadequately Cleaning DG 1 Lube Oil Sys & Oil Changes Recommended by Mfg Inadequate to Reduce Contamination.Addl Reservoir installed.W/930217 Ltr
ML17289B1391 February 1993ColumbiaLER 92-043-01:on 921202,determined That Discrepancy Existed Between Plant Procedures & Monitoring Range of RPV Instrumentation in MCR & at Remote Shutdown Panel.Caused by Insufficient Communication.Procedures revised.W/930201 Ltr
ML17289B16331 January 1993ColumbiaMonthly Operating Rept for Jan 1993 for WNP-2.W/930209 Ltr
ML17289B13127 January 1993ColumbiaForwards LER 92-034-01,describing Identification of Addl Unqualified Penetration Seals in ECCS Pump Room & Providing Status of Penetration Seal Rework
ML17289B18320 January 1993ColumbiaLER 93-002-00:on 930121,low RPV Level Reactor Scram Initiated by RPS in Response to Actual Low Water Level Condition.Caused by High Thrust Bearing Wear Trip of Rfw Pump 1A Turbine.Pressure Reduction commenced.W/930222 Ltr
ML17289B10714 January 1993ColumbiaLER 92-046-00:on 921215,night Technicians Failed to Collect Main Condenser Offgas Sample within TS Time Requirements, Due to Personnel Error.Memo Issued That Will Address Requirements for Shift personnel.W/930114 Ltr
ML17289B12811 January 1993ColumbiaUpdate to 921007 Special Rept Re Inoperability of Loose Parts Detection Instrumentation Following Failure of Channel 1 on 921113.On 921128,constant Alarm Received on Channel 8. Maint Work Request Initiated to Repair Failed Channels
ML17289B10910 January 1993ColumbiaLER 92-045-00:on 921210,an Unplanned Automatic Isolation of RCIC Occurred Due to Surveillance Procedure Deficiency & Training Inadequacy.Rcic Steam Supply Instruments Will Be Improved & Personnels Will Be trained.W/930111 Ltr
ML17289B0974 January 1993ColumbiaLER 92-043-00:on 921202,identified That Operator Actions Inadequately Presented in Procedures Used to Implement App R Shutdown Analysis Requirements.Root Cause Under Consideration.Suppl LER Will Be submitted.W/930104 Ltr
ML17289B18631 December 1992ColumbiaAnnual Operating Rept,1992. W/930301 Ltr
ML17289B14431 December 1992ColumbiaAnnual Personnel Monitoring Rept for 1992. W/930204 Ltr
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