LER-1991-009, Forwards LER 91-009-00 Re Plant Operation W/Sg Tube Not Plugged Per TS 4.4.4.b,rendering SG 2 Administratively Inoperable During Cycle 4 Operation |
| Event date: |
|
|---|
| Report date: |
|
|---|
| 5291991009R00 - NRC Website |
|
text
ACCEI ERAT<D DOCUMENT DISTRjUTION SYSTEM REGULRIOZ ZNPORMRTZON DZSTRIBUTIOOdYSTEM (RIDE)
I ACCESSION NBR:9306170026 DOC.DATE: 93/06/07 NOTARIZED:
NO DOCKET FACIL:STN-50-529 Palo Verde Nuclear Station, Unit 2, Arizona Publi 05000529
'AUTH.NAME AUTHOR AFFILIATION LEVINE,J.M.
Arizona Public Service Co. (formerly Arizona Nuclear Power RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)
SUBJECT:
Forwards LER 91-009-00 re plant operation w/SG tube not
~ plugged per TS 4.4.4.b,rendering SG 2 administratively inoperable during Cycle 4 operation.
DISTRIBUTION CODE:
ZE22T COPIES RECEIVED:LTR j ENCL j SIZE: /
TITLE: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.
NOTES:Standardized plant.
05000529 RECIPIENT ID CODE/NAME PDV LA TRAMMELL,C INTERNAL:'CNW AEOD/DOA AEOD/ROAB/DSP NRR/DE/EMEB NRR/DRCH/HICB NRR/DRIL/RPEB NRR/DRSS/PRPB NRR/DSSA/SRXB RES/DSIR/EIB EXTERNAL: EGhG BRYCE,J.H NRC PDR NSIC POOREPW.
COPIES LTTR. ENCL 1
1 1
1 2
2 1
1 2
2 1
1 1
1 1
1 2
2 1
1 1
1 2
2 1
1 1
1 RECIPIENT ID CODE/NAME PDV PD TRAN,L ACRS AEOD/DSP/TPAB NRR/DE/EELB NRR/DRCH/HHFB NRR/DRCH/HOLB NRR/DRPW/OEAB RR/iDQSA/S P LB EG.FIL~
02 RGN5 FILE 01 L ST LOBBY WARD NSIC MURPHY,G.A NUDOCS FULL TXT COPIES LTTR ENCL 1
1 1
1 2
2 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1
- - 1 1
1 1
NOTE TO ALL"RIDS" RECIPIENTS:
PLEASE HELP US TO REDUCE WASTE! CONTACI'HE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 504-2065) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEEDl FULL TEXT CONVERSION REQUIRED
,TOTAL NUMBER OF COPIES REQUIRED:
LTTR 33 ENCL 33
il
Arizona Public Service Company PALO VERDE NUCLEAR GENERATING STATION P.O. 8OX 52034
~
PHOENIX. ARIZONA85072-2034 JAMES M. LEVINE
'ICE PAESIDENT NUCLEAR PRODUCTION U. S. Nuclear Regulatory Commission Attention: Document Control Desk Mail Station P1-37 Washington, D.C. 20555 192-00843-JML/TRB/NLT June 7, 1993
Dear Sirs:
Subject:
Palo Verde Nuclear Generating Station Unit 2-Docket No. STN 50-529 (License No. NPF-51)
Licensee Event Report 91-009-00 File: 93-020-404 Attached please find Licensee Event Report (LER) 91-009-00 prepared and submitted pursuant to 10CFR50.73.
This LER reports operation with a steam generator tube which was not plugged as required by Technical Specification 4.4A.4.b, rendering Steam Generator 2 administratively inoperable during Cycle 4 operation.
In accordance with 10CFR50.73(d), a copy of this LER is being forwarded to the Regional Administrator, NRC Region V.
If you have any questions, please contact T. R. Bradish, Manager, Nuclear Regulatory Affairs at (602) 393-5421.
Very truly yours JML/TRB/rv Attachment (all with attachment) cc:
W. F. Conway B. H. Faulkenberry J. A. Sloan INPO Records Center L503. Li 930hi70026 930607 PDR ADOCK 05000529 S
PDR P
I
t
|
|---|
|
|
| | | Reporting criterion |
|---|
| 05000528/LER-1991-001, :on 910110.determined That Postulated Break in Reactor Coolant Pump High Pressure Seal Cooler Could Result in RCS Leak Outside Containment.Caused by Tube Rupture in Seal Cooler.Rcs Activity Monitored |
- on 910110.determined That Postulated Break in Reactor Coolant Pump High Pressure Seal Cooler Could Result in RCS Leak Outside Containment.Caused by Tube Rupture in Seal Cooler.Rcs Activity Monitored
| 10 CFR 50.73(e)(2) | | 05000529/LER-1991-002-01, :on 910619,daily Engineering Review of Reactor Coolant Pump (RCP) Vibration Data Missed Due to Personnel Error.Rcp Vibration Analysis Completed & Personnel Counseled.No Abnormalities Noted |
- on 910619,daily Engineering Review of Reactor Coolant Pump (RCP) Vibration Data Missed Due to Personnel Error.Rcp Vibration Analysis Completed & Personnel Counseled.No Abnormalities Noted
| | | 05000528/LER-1991-003, :on 910208,determined That Essential Spray Pond cross-connect Valves Not Verified in Correct Position. Caused by Failure to Meet TS Surveillance Requirements. Valve Positions Verified & Valves Locked Shut |
- on 910208,determined That Essential Spray Pond cross-connect Valves Not Verified in Correct Position. Caused by Failure to Meet TS Surveillance Requirements. Valve Positions Verified & Valves Locked Shut
| | | 05000530/LER-1991-003, :on 910619,spurious Containment Spray Sys Actuation Occurred During Performance of Monthly Esfs Surveillance Testing of Pps.Caused by Incorrect Assembly of Esfas.Pushbutton Test Switch Replaced |
- on 910619,spurious Containment Spray Sys Actuation Occurred During Performance of Monthly Esfs Surveillance Testing of Pps.Caused by Incorrect Assembly of Esfas.Pushbutton Test Switch Replaced
| | | 05000529/LER-1991-004, :on 910816,reactor Trip Occurred Due to High Pressurizer Pressure.Caused by Generator/Turbine Trip in Combination W/Coginitive Personnel Error.Generrex Ac/Dc Gate Board Was Replaced |
- on 910816,reactor Trip Occurred Due to High Pressurizer Pressure.Caused by Generator/Turbine Trip in Combination W/Coginitive Personnel Error.Generrex Ac/Dc Gate Board Was Replaced
| | | 05000528/LER-1991-004, :on 910320,supply Breaker Between non-Class IE 13.8 Kv Switchgear Buses Opened,Resulting in Loss of Power to Train a Class 1E 4.16 Kv Bus.Caused by Personnel Error. Preventive Maint Suspended |
- on 910320,supply Breaker Between non-Class IE 13.8 Kv Switchgear Buses Opened,Resulting in Loss of Power to Train a Class 1E 4.16 Kv Bus.Caused by Personnel Error. Preventive Maint Suspended
| 10 CFR 50.73(e)(2) | | 05000530/LER-1991-004-01, :on 910713,spurious Train a Containment Purge Isolation Actuation Signal Initiated on balance-of-plant Esfas,Resulting in Spike of Monitor RU-37.Caused by Failure of Detector Tube.Technicians Briefed |
- on 910713,spurious Train a Containment Purge Isolation Actuation Signal Initiated on balance-of-plant Esfas,Resulting in Spike of Monitor RU-37.Caused by Failure of Detector Tube.Technicians Briefed
| | | 05000529/LER-1991-005-02, :on 911009,determined That 11 of 20 Main Steam Safety Valve as-found Relief Settings Out of Tolerance Specified in TS 3.7.1.1.Caused by Setpoint Drift.Valves Adjusted & Successfully Retested |
- on 911009,determined That 11 of 20 Main Steam Safety Valve as-found Relief Settings Out of Tolerance Specified in TS 3.7.1.1.Caused by Setpoint Drift.Valves Adjusted & Successfully Retested
| 10 CFR 50.73(e)(2) 10 CFR 50.73(e)(2)(iii) 10 CFR 50.73(e)(2)(6) | | 05000529/LER-1991-005, :on 911009,determined That Main Steam Safety Valves Out of Tolerence,Per TS 3.7.1.1 & on 911104 & 05, Determined That Pressurizer Safety Valves Out of Tolerence. Caused by Setpoint Drift.Valves Adjusted |
- on 911009,determined That Main Steam Safety Valves Out of Tolerence,Per TS 3.7.1.1 & on 911104 & 05, Determined That Pressurizer Safety Valves Out of Tolerence. Caused by Setpoint Drift.Valves Adjusted
| | | 05000528/LER-1991-006, :on 910517,ESF Actuation Occurred Due to Radiation Monitor Failure.Caused by Malfunctioning Central Processing Unit & Random Access Memory Board on Train B. Boards Replaced |
- on 910517,ESF Actuation Occurred Due to Radiation Monitor Failure.Caused by Malfunctioning Central Processing Unit & Random Access Memory Board on Train B. Boards Replaced
| 10 CFR 50.73(e)(2) 10 CFR 50.73(e)(1) | | 05000529/LER-1991-006-02, :on 911027,control Element Assemblies Withdrawn Approx 1 Ft Out of Core During Refueling Operations W/O Direct Communication W/Control Room.Caused by Personnel Errors.Personnel Involved Briefed |
- on 911027,control Element Assemblies Withdrawn Approx 1 Ft Out of Core During Refueling Operations W/O Direct Communication W/Control Room.Caused by Personnel Errors.Personnel Involved Briefed
| | | 05000528/LER-1991-007, :on 910822,determined That Normal HVAC Sys Cooling to Various ESF Pump Rooms Not Adequate.Caused by Not Recognizing That Normal HVAC Sys Was Not 100 Percent Redundant to Some Components.Guidance Issued |
- on 910822,determined That Normal HVAC Sys Cooling to Various ESF Pump Rooms Not Adequate.Caused by Not Recognizing That Normal HVAC Sys Was Not 100 Percent Redundant to Some Components.Guidance Issued
| 10 CFR 50.73(c)(2) | | 05000529/LER-1991-007-02, :on 911205,discovered That Containment Isolation Valve Required to Be Closed During Core Alteration Was in Open Position.Caused by Procedure Inadequacy. Personnel Involved W/Actuator Briefed |
- on 911205,discovered That Containment Isolation Valve Required to Be Closed During Core Alteration Was in Open Position.Caused by Procedure Inadequacy. Personnel Involved W/Actuator Briefed
| | | 05000530/LER-1991-008-01, :on 911114,lighting Induced Electrical Fault on a Phase Main Transformer Caused Generator Trip,Turbine Trip & Reactor Power Cutback.Caused by Problem W/Calculator Software.Lightning Protection Sys Evaluated |
- on 911114,lighting Induced Electrical Fault on a Phase Main Transformer Caused Generator Trip,Turbine Trip & Reactor Power Cutback.Caused by Problem W/Calculator Software.Lightning Protection Sys Evaluated
| | | 05000528/LER-1991-008, :on 910816,determined That Design Basis App R Fire in Control Room Could Result in Loss of Reactor Coolant Pump Seal Cooling & Seal Damage.Caused by Erroneous App R Evaluations.Continuous Fire Watch Established |
- on 910816,determined That Design Basis App R Fire in Control Room Could Result in Loss of Reactor Coolant Pump Seal Cooling & Seal Damage.Caused by Erroneous App R Evaluations.Continuous Fire Watch Established
| | | 05000528/LER-1991-009, :on 910914,reactor Trip & Main Steam Isolation Signal ESF Occurred.Caused by High Steam Generator Level. Troubleshooting Performed,Economizer Valve Positioner Replaced,Tested & Returned to Svc |
- on 910914,reactor Trip & Main Steam Isolation Signal ESF Occurred.Caused by High Steam Generator Level. Troubleshooting Performed,Economizer Valve Positioner Replaced,Tested & Returned to Svc
| | | 05000529/LER-1991-009, Forwards LER 91-009-00 Re Plant Operation W/Sg Tube Not Plugged Per TS 4.4.4.b,rendering SG 2 Administratively Inoperable During Cycle 4 Operation | Forwards LER 91-009-00 Re Plant Operation W/Sg Tube Not Plugged Per TS 4.4.4.b,rendering SG 2 Administratively Inoperable During Cycle 4 Operation | | | 05000528/LER-1991-010, :on 911027,grid Perturbation Caused Main Turbine Control Sys to Fast Close & Immediately Reopen Turbine Control Valves.Caused by Lightning Strike on Feeder Line.Temporary Mod Installed |
- on 911027,grid Perturbation Caused Main Turbine Control Sys to Fast Close & Immediately Reopen Turbine Control Valves.Caused by Lightning Strike on Feeder Line.Temporary Mod Installed
| | | 05000530/LER-1991-010-01, :on 911115,mobile Crane Came in Contact W/ Energized 13.8 Kv Power Line,Resulting in Deenergization of Offsite Power.Caused by Personnel Error.Crane Operating Engineer Site Access Revoked |
- on 911115,mobile Crane Came in Contact W/ Energized 13.8 Kv Power Line,Resulting in Deenergization of Offsite Power.Caused by Personnel Error.Crane Operating Engineer Site Access Revoked
| 10 CFR 50.73(e)(2) | | 05000530/LER-1991-011-01, :on 911104,auxiliary Feedwater Flow Transmitters Equalizing Valve Found Improperly Aligned. Cause Not Determined.Valves Aligned Properly |
- on 911104,auxiliary Feedwater Flow Transmitters Equalizing Valve Found Improperly Aligned. Cause Not Determined.Valves Aligned Properly
| 10 CFR 50.73(s)(2) | | 05000528/LER-1991-011, :on 911029,determined That Design Basis App R Fire in Control Room Could Result in Loss of One Train B Essential Air Handling Unit.Caused by Failure of Original App R Design.Hourly Fire Watch Established |
- on 911029,determined That Design Basis App R Fire in Control Room Could Result in Loss of One Train B Essential Air Handling Unit.Caused by Failure of Original App R Design.Hourly Fire Watch Established
| |
|