ML20062D482
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| ML20062D482 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 10/19/1978 |
| From: | Rogers C COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML20062D481 | List: |
| References | |
| LER-78-065-03L-01, LER-78-65-3L-1, NUDOCS 7811240147 | |
| Download: ML20062D482 (1) | |
Similar Documents at Zion | |
|---|---|
Category:LICENSEE EVENT REPORT (SEE ALSO AO RO)
MONTHYEARML20236J7911998-06-12012 June 1998
[Table view]LER 98-S02-00:on 980517,first Shift Security Officer Reported Being Wounded by Unknown Subject Who Fled Area. Caused by accidental,self-inflicted Gunshot Wound.Removed Officer from Duty & Charged Officer W/Filing False Rept ML20211H2191986-06-12012 June 1986 LER Number 85-028 Used to Rept Loss of RHR Cooling Flow.Ltr Should Be Disregarded ML20203L0281986-04-25025 April 1986 Informs of Planned Site Visit to Obtain Info Supporting Implementation of Emergency Response Data Sys,Including Availability of PWR or BWR Parameters in Digital Form & Characterization of Available Data Feed Points 05000304/LER-1985-026, Corrected LER 85-026-00:on 851108,discovered That Spring Loaded Check Valves Installed Backwards on Drain Lines for Reactor Containment Fan Cooler Motor HX Housings.Effect on Drainage Being Studied1985-12-0606 December 1985 Corrected LER 85-026-00:on 851108,discovered That Spring Loaded Check Valves Installed Backwards on Drain Lines for Reactor Containment Fan Cooler Motor HX Housings.Effect on Drainage Being Studied 05000304/LER-1984-006, Corrected LER 84-006-00:on 830602,during Normal Operation, Wide Range RCS Pressure Channels 403 & 405 Difference Exceeded Allowed Tolerance.Channel 405 Inoperable for 26 Days in Violation of Tech Specs1984-04-0404 April 1984 Corrected LER 84-006-00:on 830602,during Normal Operation, Wide Range RCS Pressure Channels 403 & 405 Difference Exceeded Allowed Tolerance.Channel 405 Inoperable for 26 Days in Violation of Tech Specs ML20147E8841978-12-11011 December 1978 /99X-0 on 780914:shortly After Reactor Trip an Inadvertent Safety Injection Occurred from a False Delta P Steam Pressure Signal,Generated from Shock of Feedwater Hammer.No Damage Resulted from Safety Injection ML20062F8481978-12-0808 December 1978 /03L-0 on 781108:during Monthly Performance Test on Containment Spray Pump 2C,a Cooling Water Hose on Diesel Engine Broke.Caused by a Defective Cooling Water Hose on Diesel Engine ML20147E8421978-12-0707 December 1978 /03L-0 on 781107:fuel Bldg Area Radiat Monitor ORE0005 Alarmed High Due to Erroneous Readings in Control Room & Local Readouts.Caused by Failed Gm Tube;Detector Replaced ML20147E8231978-12-0606 December 1978 /03L-0 on 781206:Unit 1 Purge Exhaust Rad Monitor Was Incorrectly Valved.Identification of Personnel & Cause 1RTPR09 of Event Could Not Be Determined.Control Room Is Being Investigated ML20147E7971978-12-0101 December 1978 /03L-0 on 781101:MSIV 1D from Train a Did Not Close When Signal Was Removed,Caused by Relay Plunger Sticking ML20150E1881978-11-22022 November 1978 /99L-0 on 780314:subj Facil Did Not Possess Cert of Compliance for Packages for 12 Shipments of Radioactive matl.10CFR71.12 Had Been Misinterpreted to Apply to Hittman Nuclear Packages.Registered W/Nrc to Use Hittman Packages ML20150E1591978-11-22022 November 1978 /03L-0 on 781027:5 Snubbers Which Had Empty Reserviors Were Proven Inoperable When Bench Tested.Caused by Hydraulic Fluid Leakage.Leakeage Sources:Reservoir Seals, Leaking Body Joints & Adjustment Screw Thread Seals ML20150E1221978-11-20020 November 1978 /03L-0 on 781021:surveillance Level Xmtrs 950,951 for Accumulator a & 956,957 for Accum B Were Found Out of Tolerance Low.Caused by Instru Drift ML20150E1551978-11-17017 November 1978 /03L-0 on 781020:during Refueling Surveillance Noted That Steam Generator 1D Level Channel IL-538 Was 5% High,Exceeding 2% Loop Tolerance.Caused by Blocked Instru Line Leading to Transmitter.Line Subsequently Cleared ML20150E1401978-11-17017 November 1978 /03L-0 on 781020:during Refueling Surveillance, Noted That Steam Generator 1B Level Channel 1L-548 Had Drifted Above Tech Spec Accuracy Limit.Caused by Instru Drift of Transmitter Instru Subsequently Recalibr ML20150E1091978-11-17017 November 1978 /03L-0 on 781020:during Refueling Outage Surveillance,Noted That Feed Water Flow Xmtr 1LT-531 Had Shifted in Excess of Tech Spec Limits.Caused by Transmitter Drift.Xmtr Recalibr & Channel Returned to Normal ML20197D8801978-11-17017 November 1978 /03L-0 on 781018:Containment Air Particulate monitor,1RE0011 Blower Continually Tripped Due to Low Flow. Caused by Improper Valve Lineup of Monitor ML20062D5171978-11-14014 November 1978 /03L-0 on 781015:2D MSIV Failed to Close from the Control Room.Caused by Failure of Both DC Solenoid Valves & AC Solenoid Valve.Ac Solenoid Valve Replaced ML20062D4711978-11-0606 November 1978 /03L-0 on781008:S/G Level Channel 2 LI-538 Was Found to Be Indicating 6% Higher than the Other 2 Channels. Caused by Dirt in Xmtr Sensing Lines & a Xmtr Oscillator PN805B27U01 Being Out of Tune ML20150C7281978-11-0303 November 1978 /03L-0 on 781004:Unit 1 Component Cooling Radiat Monitor Would Not Respond to Check Source.Caused by Water Damaged Detector in Detector Well & Defective Rate Board ML20150C7371978-11-0303 November 1978 /03L-0 on 781006:Westinghouse Reported 0.5% Error in Apdms Limit Calculations Due to Roundoff & Addl Apparent Error Totaled 1.5%,creating Potential for Exceeding Apdms Limits.Caused by X.Xxx Format of Apdms Calculations ML20150C7461978-10-27027 October 1978 /03L-0 on 780904:channel 1L-537 Higher than 2 Redundant Channels Due to Steam Leak on Root Valve (3/4, Manual,Globe)On Sensing Line Xmtr.Channel Failed Again on 780908.Root Valve Replaced ML20062D5481978-10-25025 October 1978 /03L-0 on 780925:pressurizer Level 2LT-459 Was Found to Be 6% Lower That the Other 2 Channels.No Cause Was Found for Failure ML20062D4821978-10-19019 October 1978 /03L-0 on 780919:during Normal Oper,Channel 2L-547 Had Failed High & Assoc Bistables Were Tripped,Due to Faulty Xmtr(Level,Mode 13D2495K).XMTR Replaced W/Spare & Channel Recalibr ML20150C6241978-10-13013 October 1978 /03L-0 on 780914:an Inadvertent SI Occurred When 1A Diesel Generator Was Started Due to Bent Plunger Spring Causing Failure of Engine Trip Lockout Solenoid Valve (Asco 8320).Valves Replaced & Springs Checked ML20150C7031978-10-13013 October 1978 /03L-0 on 780914:on a Phase a isolation,1FCV-PR24B & 1FCV-WD17A Failed to Close Placing Containment Isolation Sys in Degraded Mode.Caused by Asco 8320 Solenoid Valve Failing to Close Due to Oil in Instru Air ML20150C7121978-10-13013 October 1978 /03L-0 on 780914: Damper Switching Sequence from Normal to Accident Mode Caused Pressure Differential in 1B Rcfc.Pressure Differential Caused Accident Inlet Damper Blades to Flex & Bend.Switching Sequence to Be Changed ML20062D5741978-10-13013 October 1978 /03L-0 on 780915:during Normal Oper,Received a Nis Channel Deviation Alarm.Pwr Range Channel N42 Was Reading 93% Instead of 100%.Caused by Defective 25 Volt Pwr Supply in N42 Pwr Range Drawer ML20062A7451978-10-0606 October 1978 /03L-0:on 780906,during Testing,Raw Water Svc Tank to Charging Suction Valve Failed to Open Remotely Causing Sys Degradation Per Tech Specs.Limitorque Model SMB00 Valve Operator Torqued Out & Valve Stroked Three Times 1998-06-12 Category:TEXT-SAFETY REPORT MONTHYEARML20217J4791999-10-18018 October 1999
[Table view]SER Approving Exemption from Certain Requirements of 10CFR73 for Zion Nuclear Power Station,Units 1 & 2.NRC Concluded That Proposed Alternative Measures for Protection Against Radiological Sabotage Meets Requirements of 10CFR73.55 A99026, Monthly Operating Repts for Sept 1999 for Zion Nuclear Power Station,Units 1 & 2.With1999-09-30030 September 1999 Monthly Operating Repts for Sept 1999 for Zion Nuclear Power Station,Units 1 & 2.With ML20217A1691999-09-22022 September 1999 Part 21 Rept Re Engine Sys,Inc Controllers,Manufactured Between Dec 1997 & May 1999,that May Have Questionable Soldering Workmanship.Caused by Inadequate Personnel Training.Sent Rept to All Nuclear Customers A99023, Monthly Operating Repts for Aug 1999 for Zion Nuclear Power Station,Units 1 & 2.With1999-08-31031 August 1999 Monthly Operating Repts for Aug 1999 for Zion Nuclear Power Station,Units 1 & 2.With ML20211K0401999-08-31031 August 1999 SER Accepting Approval of Defueled Station Emergency Plan & Exemption from Certain Requirements of 10CFR50.47, Emergency Plans for Plants,Units 1 & 2 A99022, Monthly Operating Repts for July 1999 for Zion Nuclear Power Station,Units 1 & 2.With1999-07-31031 July 1999 Monthly Operating Repts for July 1999 for Zion Nuclear Power Station,Units 1 & 2.With A99021, Monthly Operating Repts for June 1999 for Zion Nuclear Power Station,Units 1 & 2.With1999-06-30030 June 1999 Monthly Operating Repts for June 1999 for Zion Nuclear Power Station,Units 1 & 2.With A99019, Monthly Operating Repts for May 1999 for Zion Nuclear Power Station,Units 1 & 2.With1999-05-31031 May 1999 Monthly Operating Repts for May 1999 for Zion Nuclear Power Station,Units 1 & 2.With ML20195B2591999-05-19019 May 1999 Rev 66a to CE-1-A,consisting of Proposed Changes to QAP for Dnps,Qcs,Znps,Lcs,Byron & Braidwood Stations A99016, Monthly Operating Repts for Apr 1999 for Zion Nuclear Power Station,Units 1 & 2.With1999-04-30030 April 1999 Monthly Operating Repts for Apr 1999 for Zion Nuclear Power Station,Units 1 & 2.With ML20195H9521999-04-30030 April 1999 Revised Monthly Operating Repts for Apr 1999 for Zion Nuclear Power Station,Units 1 & 2 A99013, Monthly Operating Repts for Mar 1999 for Zion Nuclear Power Station,Units 1 & 2.With1999-03-31031 March 1999 Monthly Operating Repts for Mar 1999 for Zion Nuclear Power Station,Units 1 & 2.With ML20207M9231999-03-12012 March 1999 Amended Part 21 Rept Re Cooper-Bessemer Ksv EDG Power Piston Failure.Total of 198 or More Pistons Have Been Measured at Seven Different Sites.All Potentially Defective Pistons Have Been Removed from Svc Based on Encl Results A990101, Monthly Operating Repts for Feb 1999 for Zion Nuclear Power Station,Units 1 & 2.With1999-02-28028 February 1999 Monthly Operating Repts for Feb 1999 for Zion Nuclear Power Station,Units 1 & 2.With ML20205M7061998-12-31031 December 1998 Unicom Corp 1998 Summary Annual Rept. with A99002, Monthly Operating Repts for Dec 1998 for Zion Nuclear Power Station,Units 1 & 2.With1998-12-31031 December 1998 Monthly Operating Repts for Dec 1998 for Zion Nuclear Power Station,Units 1 & 2.With A98062, Monthly Operating Repts for Nov 1998 for Zion Nuclear Power Station,Units 1 & 2.With1998-11-30030 November 1998 Monthly Operating Repts for Nov 1998 for Zion Nuclear Power Station,Units 1 & 2.With ML20196J0061998-11-19019 November 1998 Rev 66 to Topical Rept CE-1-A, QA Program ML20196A4191998-11-19019 November 1998 Safety Evaluation Accepting QA TR CE-1-A,Rev 66 Re Changes in Independent & Onsite Review Organization by Creating NSRB A98057, Monthly Operating Repts for Oct 1998 for Zion Nuclear Power Station,Units 1 & 2.With1998-10-31031 October 1998 Monthly Operating Repts for Oct 1998 for Zion Nuclear Power Station,Units 1 & 2.With A98052, Monthly Operating Rept for Sept 1998 for Zion Nuclear Power Station,Units 1 & 2.With1998-09-30030 September 1998 Monthly Operating Rept for Sept 1998 for Zion Nuclear Power Station,Units 1 & 2.With A98049, Special Rept 304-123-98-001SR:on 980902,valid Failure Rept for 2A EDG Occurred.Cause Unknown.Util Submitted Written Certification of Permanent Cessation of Operations at Zion Station,Units 1 & 21998-09-25025 September 1998 Special Rept 304-123-98-001SR:on 980902,valid Failure Rept for 2A EDG Occurred.Cause Unknown.Util Submitted Written Certification of Permanent Cessation of Operations at Zion Station,Units 1 & 2 ML20195D1221998-08-31031 August 1998 DSAR, for Zion Station A98048, Monthly Operating Repts for Aug 1998 for Zion Station,Units 1 & 2.With1998-08-31031 August 1998 Monthly Operating Repts for Aug 1998 for Zion Station,Units 1 & 2.With ML20237E2331998-08-21021 August 1998 Revised Pages of Section 20 of Rev 66 to CE-1-A, QA Topical Rept A98042, Monthly Operating Repts for July 1998 for Zion Station,Units 1 & 21998-07-31031 July 1998 Monthly Operating Repts for July 1998 for Zion Station,Units 1 & 2 ML20236U6331998-07-24024 July 1998 Safety Evaluation Supporting Amends 179 & 166 to Licenses DPR-39 & DPR-48,respectively ML20236S3281998-07-20020 July 1998 Safety Evaluation Supporting Certified Fuel Handlers Training & Retraining Program A98041, Monthly Operating Repts for June 1998 for Zion Nuclear Station,Units 1 & 21998-06-30030 June 1998 Monthly Operating Repts for June 1998 for Zion Nuclear Station,Units 1 & 2 ML20236J7911998-06-12012 June 1998 LER 98-S02-00:on 980517,first Shift Security Officer Reported Being Wounded by Unknown Subject Who Fled Area. Caused by accidental,self-inflicted Gunshot Wound.Removed Officer from Duty & Charged Officer W/Filing False Rept A98039, Monthly Operating Repts for May 1998 for Zion Generating Station,Units 1 & 21998-05-31031 May 1998 Monthly Operating Repts for May 1998 for Zion Generating Station,Units 1 & 2 A98035, Monthly Operating Repts for Apr 1998 for Zion Station,Units 1 & 21998-04-30030 April 1998 Monthly Operating Repts for Apr 1998 for Zion Station,Units 1 & 2 A98033, Monthly Operating Repts for Mar 1998 for Zion Station,Units 1 & 21998-03-31031 March 1998 Monthly Operating Repts for Mar 1998 for Zion Station,Units 1 & 2 A98029, Monthly Operating Repts for Feb 1998 for Zion Station,Units 1 & 21998-02-28028 February 1998 Monthly Operating Repts for Feb 1998 for Zion Station,Units 1 & 2 A98015, Monthly Operating Repts for Jan 1998 for Zion Station,Units 1 & 21998-01-31031 January 1998 Monthly Operating Repts for Jan 1998 for Zion Station,Units 1 & 2 ML20199K1651998-01-23023 January 1998 Rev 65h to Topical Rept CE-1-A, Comm Ed QA Tr ML20198P8361998-01-0909 January 1998 SER Accepting Determination of Zone of Influnce for Coatings in Containment of Plant,Units 1 & 2 ML20198P8721998-01-0909 January 1998 Safety Evaluation Accepting Request for Alternative Insp Requirements for Augmented Exam of Reactor Presure Vessels for Zion Nuclear Power Station,Units 1 & 2 A98034, 1997 Annual 10CFR50.59 Summary Rept1997-12-31031 December 1997 1997 Annual 10CFR50.59 Summary Rept ML20216D3611997-12-31031 December 1997 Unicom Corp 1997 Summary Annual Rept A98004, Monthly Operating Repts for Dec 1997 for Zion Station,Units 1 & 21997-12-31031 December 1997 Monthly Operating Repts for Dec 1997 for Zion Station,Units 1 & 2 ML20202F1451997-12-0303 December 1997 Independent Investigation Team Rept on Safety Conscious Work Environment at Zion Station ML20202F0761997-12-0202 December 1997 Safety Evaluation Denying Licensee Proposed Alternative Contained in Request for Relief CR-13,Rev 1,of Removing Only Insulation Classified as Removable.Staff Determined That Submittal Does Not Provide Acceptable Level of Quality A97076, Monthly Operating Repts for Nov 1997 for Zion Station,Units 1 & 21997-11-30030 November 1997 Monthly Operating Repts for Nov 1997 for Zion Station,Units 1 & 2 ML20199J5931997-11-26026 November 1997 SG Insp Results,Fall 1996 Refueling Outage 14 (Z2R14) A97063, Special Rept 295-123-97-002SR:on 971014,failure of 1B EDG Occurred.Exam of Nipple Fractured Surface Revealed Failure Occurred Through Thread Root.Unit 1 Defueled & Unit 2 in Mode 5 Throughout Event1997-11-13013 November 1997 Special Rept 295-123-97-002SR:on 971014,failure of 1B EDG Occurred.Exam of Nipple Fractured Surface Revealed Failure Occurred Through Thread Root.Unit 1 Defueled & Unit 2 in Mode 5 Throughout Event A97069, Monthly Operating Repts for Oct 1997 for Zion Station,Units 1 & 21997-10-31031 October 1997 Monthly Operating Repts for Oct 1997 for Zion Station,Units 1 & 2 ML20211M0181997-10-0707 October 1997 Special Rept 295-123-97-001SR:on 970904,OA Motor Declared Inoperable Due to Pin Hole Leaks Identified on Pressure Regulating Relief valve,0FP0052.Procedure Was Rewritten to Ensure 0FP0052 Would Maintain Same Pressure When Fully Open A97058, Monthly Operating Repts for Sept 1997 for Zion Generating Station,Units 1 & 21997-09-30030 September 1997 Monthly Operating Repts for Sept 1997 for Zion Generating Station,Units 1 & 2 ML20210V2401997-09-19019 September 1997 Rev 65g to Topical Rept CE-1-A, Comm Ed QA Manual 1999-09-30 |
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