ML20049A605
| ML20049A605 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 06/12/1981 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| RO-2-81-34-1P, NUDOCS 8106180277 | |
| Download: ML20049A605 (2) | |
Similar Documents at Peach Bottom | |
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Category:REPORTABLE OCCURRENCE REPORT (SEE ALSO AO LER)
MONTHYEARML20115H7681996-07-17017 July 1996
[Table view]Special Rept:On 960603,Unit 2 Vent Stack Wide Range Gas Radiation Monitor Sys Removed from Svc for Planned Mod.Sys Subsequently Returned to Svc on 960701.Mod Replaced ML20115H0111996-07-17017 July 1996 Special Rept:On 960703,main Stack Wide Range Gas Radiation Monitor Sys Removed from Svc for Planned Mod.Sys Expected to Be Returned to Svc by 960830 After Mod Work Completed ML20111B4751996-05-10010 May 1996 Special Rept:On 960422,vent Stack Wide Range Gas Radiation Monitor Sys Was Removed from Svc for Planned Mod.Field Survey Teams Would Be Dispatched to Monitor Radioactive Effluents as Defined in Plant Emergency Plan ML20092M1751995-09-22022 September 1995 Special Rept:On 950726,valid Failure of E-3 EDG Occurred Due to Dead Spot on Potentiometer Which Affected E-3 EDG Controller Output signal.E-3 EDG Returned to Operable Status Following Motor Operated Potentiometer Replacement ML20087H2511995-08-14014 August 1995 Special Rept:On 950726,non-valid Failure of E-3 EDG Occurred Due to Dead Spot on E-3 EDG Motor Operated Potentiometer (MOP).E-1 & E-3 EDG Mops Will Be Replaced W/New Type Mop During Future Mod Outages ML20086R5171995-07-25025 July 1995 Special Rept:On 950630,determined That Number 12 Cylinder on E-1 D/G Had Lower than Normal Operating Temps During Surveillance Test.Caused by Failure of Fuel Oil Injector Pump.Injector Pump Replaced & Satisfactorily Tested ML20078C1701994-10-24024 October 1994 Special Rept:On 940924,valid Failure of E-2 EDG Occurred. Caused by Problem w/4 Kv Breaker.Breaker Incorporated Into Preventive Maint Program to Replace Grease ML20071Q5771994-08-0202 August 1994 Special Rept:On 940706,valid Failure of E-4 Emergency Diesel Generator Occurred.Caused by Solenoid Valve Spuriously Sticking.Valves Replaced ML20064C3011994-02-28028 February 1994 Special Rept:On 940211,non Valid Failure of EDG E-4 Occurred When Voltage Shutdown Button Inadvertently Bumped.Maint Insp Initiated to Determine If Generator Damage May Have Occurred Due to Event.Remaining EDGs Were Operable ML20059A8271993-10-22022 October 1993 Special Rept:On 931012,valid Failure of EDG E-2 Occurred During Routine Monthly Test.Edg E-2 Declared Inoperable Due to High Fuel Oil Differential Pressure Condition.Edg E-2 Fuel Oil Filters Replaced ML20056G8701993-08-27027 August 1993 Special Rept:On 930803,discovered That Cylinder on 2-EDG Lower than Normal Operating Temps.Caused by Fuel Pin on Cylinder Injector Pump Not Fully Engaged ML20045B2381993-06-0909 June 1993 Special Rept:On 930523,EDG E-2 Declared Inoperable When Engine Lubricating Oil Temp Alarm Annunicated on Low Temp Condition.Caused by Circulating Pump Trip on Thermal Overload.Thermal Overload Assembly Reinstalled ML20044C4091993-03-17017 March 1993 Special Rept:On 930302,motor Driven Fire Pump Administratively Declared Inoperable Due to Lack of Water Leakage Through Pump Packing.Backup Water Supply Established to Satisfy Requirements Specified in TS 3.14.A.3.a ML20034G2581993-03-0303 March 1993 Special Rept:On 930302,motor Driven Fire Pump Administratively Declared Inoperable Due to Lack of Water Leakage Through Pump Packing.Backup Water Supply Established to Satisfy Requirements Specified in TS 3.14.A.3.a ML20079L6291991-10-30030 October 1991 Special Rept:On 910916 & 23,cable Spreading & Computer Room CO2 Fire Protection Sys Out for Svc for More than 14 Days. Caused by Need to Provide for Worker Safety During Mod Work. Fire Detectors Verified Operable & Firewatch Stationed ML20077P9701991-08-15015 August 1991 Special Rept:On 910714,diesel Driven Fire Pump Out of Svc for More than Seven Days Due to Annual Preventative Maint Activities.Preventative Maint Completed & Pump Returned to Svc.Operability Testing Completed Satisfactorily on 910723 ML20029A1281991-01-28028 January 1991 Special Rept:On 910107,diesel Driven Fire Pump Out of Svc in Excess of 7 Days.Three Control Relays Burned Out Due to Failure of Voltage Regulator for diesel-mounted Generator. Generator Rebuilt & Reinstalled.Relays & Regulator Replaced ML20064A4651990-08-27027 August 1990 Special Rept:On 900802,diesel-driven Fire Pump Declared Inoperable During Testing Due to Engine Overheating.Caused by Silt & Marine Biotic Life Plugging Y Strainer in Cooling Line.Strainer Cleaned & Retested ML20059B8991990-08-21021 August 1990 Special Rept:On 900802,diesel Driven Fire Pump Declared Inoperable During Testing Due to Engine Overheating.Diesel Generator E-2 Returned to Operable Status & motor-driven Fire Pump Declared Operable on 900807 ML20058N6651990-08-0808 August 1990 Special Rept:On 900802 & 07,diesel Driven & Motor Driven Fire Pumps,Respectively,Declared Administratively Out of Svc.Caused by Engine Overheating & Diesel Generator (DG) E-2 Out of Svc.Local Fire Depts Notified & DG E-2 Repaired ML20043G1171990-06-0606 June 1990 Special Rept:On 900501,diesel Driven Fire Pump Out of Svc for More than 7 Days During Performance of Annual Insp.Pump Returned to Svc on 900508 ML20006F3861990-02-16016 February 1990 Ro:On 900103,common Plant Standby Gas Treatment Sys Train a Fire Protection Deluge Sys Declared Inoperable for More than 14 Days.Caused by Replacement of Filter W/Threaded Pipe Plug.Fire Watch Patrol Established & Nozzle Replaced ML20245H4461989-08-10010 August 1989 Ro:On 890710,diesel Driven Fire Pump Out of Svc for More than 7 Days.Caused by Disconnected Coolant Hose from Engine Block During Test,Draining Coolant from Engine & Heat Exchanger.Insp & Repair of Engine Performed ML20245J5571989-05-0101 May 1989 Ro:On 890331,motor Driven Fire Pump Out of Svc in Excess of 7 Days.Caused by Removal of Pump from Svc on 890324 to Allow Implementation of Electrical Mods.Diesel Driven Fire Pump Verified Operable & Tested Every 72 H ML20245B3391989-04-14014 April 1989 Special Rept:On 890303,seismic Monitoring Instruments Inoperable for More than 30 Days.Caused by Triaxial Accelerometer Cables Picking Up Electrical Noise Which Caused Spurious Alarms.Noise Filters Will Be Installed ML20195E5011988-11-0303 November 1988 Special Rept:On 881020,diesel Driven Fire Pump Failed to Start Automatically During Surveillance Test.Caused by Inadequate Test.Diesel Driven Fire Pump & auto-start Feature Tested & Rev of Fire Pumps Surveillance Tests in Process ML20205H2561988-10-21021 October 1988 Ro:On 881020,diesel Driven Fire Pump Failed to Start Automatically During Performance of Surveillance Test.Cause Under Investigation.Diesel Driven Fire Pump Subsequently Tested Successfully & Returned to Svc ML20154A7261988-09-0202 September 1988 Special Rept:On 880726,motor-driven Fire Pump Out of Svc for More than 7 Days.Caused by Action Taken to Allow Cleaning & Insp of of E-42 4 Kv bus.Motor-driven Fire Pump Restored to Operable Status on 880821 ML20154A9611988-09-0101 September 1988 Special Rept:On 880822,discharge Pressure Lost While Motor Driven Fire Pump in Operation.Caused by Crack That Formed in Column Pipe Flange Area Where It Bolts to Pump.Motor Driven Pump Removed from Pump Structure,Disassembled & Inspected ML20195B8501988-06-15015 June 1988 Special Rept:On 870215,packing Leak from RCIC Outboard Isolation Valve Reported to Operating Shift.Caused by Steam Leak.New Grease Replaced.On 870915,degradation to Motor Operator & Field Wiring Discovered.Components Replaced ML20154P3591988-05-27027 May 1988 Special Rept:On 880415,carbon Dioxide Fire Suppression Sys Taken Out of Svc for More than 14 Days.Caused by Continuous Fire Watch Required in Cable Spreading Room During Repair of Hole in Floor.Hole Repaired & Subj Sys Returned to Svc ML20153B3101988-03-16016 March 1988 Special Rept:On 880302,E-224 440-volt Emergency Load Ctr Supply Breaker Tripped Open,Removing Power Supply for Motor Driven Fire Pump.Caused by Failure of Undervoltage Relay on E-22 Bus.Failed Relay Replaced ML20153B4681988-03-16016 March 1988 Revised Special Rept Re Diesel Driven Fire Pump out-of-svc for More than Tech Spec Limit of 7 Days.On 871111,diesel Driven Fire Pump Declared Inoperable.Probably Caused by Battery Failures.Surveillance Procedure Revised ML20196G5521988-03-0707 March 1988 Ro:On 880302 & 05,motor Driven Fire Pumps Declared Inoperable.Caused by Level in Storage Tank Dropped Due to Oil Being Transferred from Storage to Day Tank.Diesel Fuel Added Storage Tank to Bring Level Above 300 Gallon Limit ML20147G1531988-03-0303 March 1988 Ro:On 880302,both Fire Pumps Became Inoperable When Breaker E-224 for Motor Driven Fire Pump Tripped.Diesel Driven Fire Pump Taken Out of Svc for Maint on 880301.Caused by Failure of Bus E-22 Undervoltage Relay.Temporary Jumpers Installed ML20147C2081988-01-11011 January 1988 Special Rept:On 871216,planned Release of Liquid Radwaste from Laundry Drain Tank B Made W/O Being Treated as Described in Limiting Condition of Operation 3.8.B.4.Caused by Procedural Deficiency.Procedure Revised ML20238C5071987-12-21021 December 1987 Special Rept:On 871111,diesel-driven Fire Pump Failed Surveillance Test & Declared Inoperable.Cause Unknown.Four Sets of Cells for Two Batteries Replaced & Charged W/Portable Charger.Surveillance Test Procedure Revised ML20236K9111987-08-0303 August 1987 Ro:On 870731,motor Driven Fire Pump Automatically Started on Decreasing Header Pressure at 140 Psig.Caused by Personnel Digging in Yard Directly Behind Radwaste Bldg.Affected Portion of Fire Header Isolated for Repair of Leak ML20214W7691987-06-0505 June 1987 Special Rept:On 870428,bus E22 Deenergized to Perform Series of outage-related Mods,Causing Motor Driven Fire Pump to Be out-of-svc for More than 7 Days,In Violation of Tech Specs. Motor Driven Fire Pump Restored to Svc on 870515 ML20214U0341987-06-0404 June 1987 Special Rept:During Update of Safe Shutdown Data Base, Conditions Re Unencapsulated Cables in Fire Areas Identified as Reportable Per Confirmatory Action Ltr 86-07 & App R. Caused by Exclusion from Previous Analysis.Fire Watch Begun 05000000/LER-1986-009, Ro:On 860312,discovered That LER 2-86-04 & LER 86-009 Not Submitted to Nrc.Caused by Misplaced Repts.Repts Telecopied to Nrc.Procedure for Distribution of Repts Revised1986-04-14014 April 1986 Ro:On 860312,discovered That LER 2-86-04 & LER 86-009 Not Submitted to Nrc.Caused by Misplaced Repts.Repts Telecopied to Nrc.Procedure for Distribution of Repts Revised ML20199F4401986-03-27027 March 1986 Special Rept:On 860216,during Cold Shutdown,Condensate Storage Tank (CST) Filled & Overflowed Into CST Moat & Outside Moat.Caused by Blown Fuse Resulting in Removal of Power from Hotwell Level Controllers.Fuse Mods Considered ML20093F1951984-09-21021 September 1984 RO MM-3-03:on 840823,routine Surveillance Testing Indicated Three Moisture Sensors in Recirculation Sys Moisture Monitoring Sys Functioning Improperly.Cause Not Determined. Hourly Monitoring Being Performed ML20096F4901984-08-14014 August 1984 RO-MM-3-02:on 840715,surveillance Test Revealed Malfunctioning of Moisture Sensors in Recirculation Sys Moisture Monitoring Sys.Cause Unknown.Hourly Monitoring of Drywell Sump Collection Initiated Until Next Outage ML20094F4451984-07-23023 July 1984 RO MM-3-01:on 840622 & 25,moisture Sensors in Recirculation Sys Moisture Monitoring Sys Functioned Improperly.Cause Unknown.Drywell Sump Collection Sys Monitored Hourly Until Next Outage ML20083Q0231984-03-23023 March 1984 Ro:On 840224,during Verification of Moisture Monitoring Sys,Point 7 Failed.Cause Will Be Determined During Next Outage W/Drywell Deinerted.Drywell Sump Collection Sys Will Be Monitored Hourly ML20083P9631984-03-12012 March 1984 Ro:On 840209,CO2 Fire Protection Sys,Serving Cable Spreading Room & Computer Room,Declared Inoperable.Caused by Ground in One of Two Cables from Smoke Detector Control Panel.Cables Replaced & Sys Available for Svc ML20083P8201984-03-0505 March 1984 Ro:On 840125,moisture Sensor in Recirculation Sys Moisture Monitoring Sys Functioned Improperly & Sys Declared Inoperable.Caused by Failed Techmark Limited Moisture Sensor Circuit Card.Sensor Replaced ML20080A7731984-01-16016 January 1984 Ro:On 831128,from 830830-1128,seismic Monitoring Sys Inoperable.Caused by Personnel Oversight.Startup check-off List Modified to Require Maint Request ML20024D2331983-07-0505 July 1983 Followup Ro:Response Spectrum Analyzer Experienced Intermittent Operability Problems.Caused by Voltage Spikes in Dc Current Due to Induced Noise on Dc Signal Lines of Seismic Instrumentation.Fuses Removed 1996-07-17 Category:TEXT-SAFETY REPORT MONTHYEAR05000278/LER-1999-005-03, :on 990920,uplanned Esfas During Planned Mod Activitives in Main CR Were Noted.Caused by Inattention to Detail by Individuals Performing Work.All CR Mods Were Ceased to Allow Review of Mod Work Packages.With1999-10-20020 October 1999
[Table view]
ML20153B9651998-09-14014 September 1998 Safety Evaluation Supporting Amend 9 to License DPR-12 1999-09-30 |
Text
__
M PHILADELPHIA ELEC"!RIC COMPANT 1%ech Boi.com Atomic Power Station Delta, Pennsylinanir.
1731k June 12. 1981 W. Boyes E. Grier Office of Inspection and Enforcement Region 1 (Asited. States Nuclear Regulatory Commission.
631 Park Avenue King of Prussia,.PA 19k06 1
SUBJECT:
REPORTABLE OCCURRENCE - PROMPT NOTIFICATIDE United" States Nuclear Regulatory Ccuatission on 6/12/81. Confirming J. E. Winseuried's couvers 1
V crg %
meterence: Docket so. 05o-277/278 Poech Bottom tJaits 2 and 3
/p?
1, {' j k
6.9 2s(9) b-1 7 1981 * \\
Technical Specification
Reference:
... 1 i
amport so. 2-81-34/1P 3:
wp*" O
" cc"ta #
NO..
Occurrence Date:
June 12. 1981 N
Identification of Occurrence:
/'lg During the Safe Shutdown analysis four cables in each unit were identified.
which were improperly designated se non-safeguard. and improperly routed.
Condition Prior to Occurrence:
Unit 2 - Critical on range 9 of IRM k50 psig.
Unit 3 - Dettaeled for major outage.
Ah R Cause of Occurrence:
Improper designation of three cables associated with the power supply to-auxiliary control relays of the room eccler fans for RER, Core Spray, HPCI and BCIC pump rooms.
Analysis of Cs,_-.mece:
During the design phase of the Peach Bcttom U~ its, an error in destsnating the a
bower supply cable to the roost eccler fan auxiliary control relay cabinets
. wee made.
l'his was identified during a design review of cable routing initiated as a result of an investigation with respect to fire protectice.
The four cables involved were origin =1Tv considered non-safeguard and routed secordingly.
There are four cabinets containing the relays for.the automatie start feature of the tsas.
The cables to the A., C 4 D cabinets are routed in separated cable trays.
Hoverer the B cable is in cable tray shared. with.
the A cables.
By operating the 3 fans In the run mode, the auto start-feature is no longer required and a firs could no longer affect more than one BER or core spray pump roent cooler.
[
8106180 W
$i,
~
s
4-9 cc...ctive Action:
As an 1 Mate corrective nem the fans for the B IGR, B Core Spray and HPCI room cooler will be operated continocusly in the run mode.
Engi w ring design changes will be made to wet ther designation sad routing deficiencies.
~
Previous Failures:
7.at. 2-79-1/IP dated January h.17T9 m 2-79-10/IP dated February 26,.1979 Very truly yours.
W. T. IIllriett,. Superintendent Peach Bottaa Atomie Power Station.
ifTU: cat O
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