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| Issue date | Title | Topic | |
|---|---|---|---|
| ML17241A489 | 7 October 1999 | LER 99-004-00:on 990912,noted That MSSV Surveillance Was Outside of TS Requirements.Caused by Setpoint Drift.Subject MSSVs Are Being Refurbished & Retested Prior to Unit Startup from SL1-16 Refueling Outage.With 991007 Ltr | |
| ML17300B381 | 30 September 1999 | Monthly Operating Repts for Sept 1999 for Pvngs,Units 1,2 & 3.With 991007 Ltr | |
| ML17241A495 | 30 September 1999 | Monthly Operating Repts for Sept 1999 for St Lucie,Units 1 & 2.With 991014 Ltr | |
| ML17300B327 | 31 August 1999 | Monthly Operating Rept for Aug 1999 for Pvngs,Units 1,2 & 3 | |
| ML17241A474 | 31 August 1999 | Rev 1 to PCM 99016, St Lucie Unit 1,Cycle 16 Colr. | |
| ML17241A459 | 31 August 1999 | Monthly Operating Repts for Aug 1999 for St Lucie,Units 1 & 2.With 990913 Ltr | |
| ML17313B075 | 27 August 1999 | LER 99-002-00:on 990730,test Mode Trip Bypass for EDG Output Breakers Not Surveilled.Cause Under Investigation.Operations Personnel Conservatively Invoked SR 3.0.3 for SR 3.8.1.13. with 990827 Ltr | Missed surveillance |
| ML17241A430 | 31 July 1999 | Monthly Operating Repts for Jul 1999 for St Lucie Units 1 & 2.With 990805 Ltr | |
| ML17313B061 | 31 July 1999 | Monthly Operating Repts for July 1999 for Pvngs,Units 1,2 & 3.With 990810 Ltr | |
| ML17313B019 | 16 July 1999 | LER 99-005-00:on 990618,RT on Low DNBR Was Noted.Caused by Hardware Induced Calculation Error.Cr Operator Was Taken to Place Reactor in Stable Condition IAW Appropriate Operating Procedure | Anticipated operational occurrence |
| ML17241A411 | 16 July 1999 | LER 99-007-00:on 990610,unplanned Cooldown Transient Occurred Due to Personnel Error.Trained & Briefed Personnel & Revised Procedures.With 990716 Ltr | |
| ML17241A403 | 6 July 1999 | LER 99-006-00:on 990605,sub-critical Reactor Trip Occurred Due to Inadvertent MSIV Opening.Caused by Personnel Error. Provided Operation Supervision Instruction to Operating Crews,Stand Down Meetings & Operator Aids.With 990706 Ltr | Shutdown Margin |
| ML17241A404 | 6 July 1999 | LER 99-005-00:on 990604,CEA Drop Resulted in Manual Reactor Trip.Caused by Procedural Inadequacies.Procedure Changes Are Planned to Correct Lack of Procedural Guidance for CEA Subgroup Power Switch Replacement.With 990706 Ltr | Rod Drop Event |
| ML17355A368 | 30 June 1999 | Revised Update to Topical QA Rept, Dtd June 1999 | Safe Shutdown Non-Destructive Examination Fire Barrier Commercial Grade Dedication Coatings Nondestructive Examination Condition Adverse to Quality License Renewal Control of Heavy Loads Early Warning Fire Detection |
| ML17241A394 | 30 June 1999 | LER 99-004-01:on 990415,as Found Cycle 10 Psv Setpoints Were Outside TS Limits.Caused by Manufacturing Process Defect. All Three Psvs Were Replaced with pre-tested Valves During Cycle 11 Refueling Outage.With 990630 Ltr | |
| ML17300B315 | 30 June 1999 | Monthly Operating Repts for June 1999 for Pvngs,Units 1,2 & 3.With 990714 Ltr | |
| ML17241A409 | 30 June 1999 | Monthly Operating Repts for June 1999 for St Lucie,Units 1 & 2.With 990712 Ltr | |
| ML17313A992 | 21 June 1999 | Special Rept:On 990525,RMS mini-computer Was Removed from Service to Implement Yr 2000 Mod & Was OOS Longer than 72 H Allowed.Caused by Planned Y2K Mods.Preplanned Alternate Sampling Program Was Initiated | Offsite Dose Calculation Manual |
| ML17313A991 | 18 June 1999 | Special Rept:On 990510,loose-part Detection Sys Channel 2 Was Declared Inoperable.Caused by Malfunction of Mineral Cable Connector to Accelerometer.Licensee Will Implement Modifications Which Will Enhance loose-part Detection Sys | |
| ML17241A355 | 4 June 1999 | LER 99-002-00:on 990505,both Trains of Safety Injection Actuation Were Blocked During Surveillance.Caused by Procedure Error.Procedure Revised.With 990604 Ltr | |
| ML17241A363 | 31 May 1999 | Monthly Operating Repts for May 1999 for St Lucie Units 1 & 2.With 990610 Ltr | |
| ML17313A973 | 31 May 1999 | Monthly Operating Repts for May 1999 for Pvngs,Units 1,2 & 3.With 990608 Ltr | |
| ML17241A332 | 17 May 1999 | LER 99-004-00:on 990415,determined That as Found Cycle 10 Psv Setpoints Outside TS Limits.Root Cause Under Investigation.Psvs Replaced with pe-tested Valves During Cycle 11 | |
| ML17313A928 | 7 May 1999 | LER 99-004-00:on 990408,PSV Lift Pressures Were Outside of TS Limits.Caused by Lift Pressure Setpoint Drift.Psvs Have Been Tested,Disassembled,Inspected,Reassembled & Certified at Wyle Labs | |
| ML17241A327 | 6 May 1999 | LER 99-003-00:on 990406,ECCS Suction Header Leak Resulted in Both ECCS Trains Being Inoperable & Entry Into TS 3.0.3. Caused by Chloride Induced OD Stress Corrosion Cracking of Piping.Made Code Repairs & Coated Piping.With 990506 Ltr | Boric Acid Coatings Through Wall Leak Power change |
| ML17241A333 | 30 April 1999 | Monthly Operating Rept for Apr 1999 for St Lucie,Units 1 & 2.With 990517 Ltr | |
| ML17313A920 | 30 April 1999 | Monthly Operating Repts for Apr 1999 for Pvngs,Units 1,2 & 3.With 990512 Ltr | |
| ML17313A895 | 14 April 1999 | LER 99-003-00:on 990317,required Surveillance Requirement Not Completed Due to Deficient Procedure,Was Determined. Caused by Cognitive Personnel Error.St Procedures Revised to Require Chiller to Be Operating & Oil Temperature Checked | Ultimate heat sink Missed surveillance |
| ML17313A892 | 13 April 1999 | LER 98-003-01:on 980902,discovered That MSSV as-found Lift Pressures Were Outside TS Limits.Caused by Bonding of Valve Disc to Nozzle Seat.Affected Valves Were Adjusted,Retested & Returned to Svc | |
| ML17313A889 | 9 April 1999 | LER 99-001-00:on 990310,RT on High Pressurizer Pressure Was Noted.Caused by Loss of Heat Removal.Cr Supervisor Was Removed from Shift Duties for Diagnostics Skills Training. with 990409 Ltr | Shutdown Margin |
| ML17229B079 | 7 April 1999 | LER 99-001-00:on 990309,discovered Inadequate Design & IST SRs for Iodine Removal Sys (Irs).Caused by Original Design Inadequacies & Personnel Error.Naoh Tank Vent Valve V07233 Was Tagged Open.With 990407 Ltr | Unanalyzed Condition Boric Acid Time of Discovery Coatings |
| ML17229B080 | 7 April 1999 | LER 99-002-00:on 990311,SG ECT Error Caused Operation with Condition Prohibited by Ts.Caused by Deficiencies in Data Analysis Guideline Instructions.Licensee Will Change Data Analysis Guidelines for Lead Analysts.With 990407 Ltr | |
| ML17229B084 | 7 April 1999 | Rev 2 to PSL-ENG-SEMS-98-102, Engineering Evaluation of ECCS Suction Lines. | |
| ML17313A880 | 31 March 1999 | Monthly Operating Repts for Mar 1999 for Pvngs,Units 1,2 & 3.With 990412 Ltr | |
| ML17229B096 | 31 March 1999 | Monthly Operating Repts for Mar 1999 for St Lucie,Units 1 & 2.With 990408 Ltr | |
| ML17300B307 | 31 March 1999 | Seismic Portion of Submittal-Only Screening Review of Palo Verde Nuclear Generating Station Units Ipeee. | Safe Shutdown Safe Shutdown Earthquake Design basis earthquake Earthquake |
| ML20207M923 | 12 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 | |
| ML17229B054 | 10 March 1999 | LER 99-001-00:on 990211,inadequate TS SRs for SIT & SDC Isolation Valves Were Noted.Caused by Failure to Correctly Implement TS Srs.Submitted LAR to Align Required TS SR with Design Bases Requirements Being Verified.With 990310 Ltr | Enforcement Discretion |
| ML20207H747 | 10 March 1999 | 1999 Emergency Preparedness Exercise 99-E-AEV-03003 | High Radiation Area Ultimate heat sink Grab sample Safe Shutdown Earthquake Operating Basis Earthquake Earthquake Deep Dose Equivalent Chernobyl Downpower Siren |
| ML17313A836 | 1 March 1999 | LER 99-001-00:on 990103,TS Violation for Power Dependent Insertion Limit Alarm Being Inoperable.Caused by Personnel Error.Revised Procedure to Clarify How Computer Point Is to Be Returned to Scan Mode.With 990302 Ltr | Shutdown Margin |
| ML17229B046 | 28 February 1999 | Monthly Operating Repts for Feb 1999 for St Lucie,Units 1 & 2.With 990310 Ltr | |
| ML17313A850 | 28 February 1999 | Monthly Operating Repts for Feb 1999 for Palo Verde Nuclear Generating Station.With 990311 Ltr | |
| ML17313A779 | 5 February 1999 | Safety Evaluation Accepting Licensee Rev to Emergency Plan That Would Result in Two Less Radiation Protection Positions Immediatelu Available During Emergencies | |
| ML17229B005 | 31 January 1999 | Monthly Operating Repts for Jan 1999 for St Lucie,Units 1 & 2.With 990211 Ltr | |
| ML17313A806 | 31 January 1999 | Monthly Operating Repts for Jan 1999 for Pvngs,Units 1,2 & 3.With 990218 Ltr | |
| ML17229A990 | 20 January 1999 | LER 98-009-00:on 981223,noted That Facility Operated Outside of Design Basis.Caused by non-conservative MSLB Analysis Inputs.Will Review SR Component Differences Between Units & Will re-baseline LTOP Analysis.With 990120 Ltr | |
| ML17313A770 | 15 January 1999 | LER 96-008-00:on 960507,inadequate Procedure Results in Nuclear Power Channels Not Calibrated During Power Ascension Tests Occurred.Caused by Deficient Procedure.Procedure Revised | |
| ML17229A996 | 14 January 1999 | SG Tube Inservice Insp Special Rept. | |
| ML17229A982 | 4 January 1999 | LER 98-010-00:on 981207,RCS Boron Sample Frequency Required by Ts,Was Exceeded by Twelve Minutes.Caused by Personnel Error.Equipment Clearance Order Was Lifted to Draw Required Sample & Operations Procedure Was Changed.With 990104 Ltr | Shutdown Margin |
| ML17313A738 | 31 December 1998 | Monthly Operating Repts for Dec 1998 for Palo Verde Nuclear Generating Station,Units 1,2 & 3.With 990113 Ltr |