LER-1998-006, Forwards LER 98-006-01 Re Hpsip Discharge Check Valves Being Misaligned.Ler Contains Commitments for Correcting Condition |
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CATEGORY 1
'EGULAT Y INFORMATION DISTRIBUTIO SYSTEM (RIDS)
ACCESSION NBR:9809100277 DOC.DATE:'98/09/03 NOTARIZED: NO DOCKET I FACZL-STN-50-528 Palo Verde Nuclear Station, Unit 1, Arizona Publi 05000528 AUTH NAME e
AUTHOR AFFILIATION OVERBECK,G.R.
Arizona Public Service Co.
(formerly Arizona Nuclear Power RECIP. NAME RECIPIENT AFFILIATION Records Man'agement Branch (Document Control Desk)
SUBJECT:
Forwards LER 98-006-01,re HPSIP discharge check valves being misaligned.LER contains commitments for correcting condition.
DISTRIBUTION CODE: IE22T COPIES RECEIVED:LTR i ENCL i SIZE:
'TITLE: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.
NOTES:STANDARDIZED PLANT 05000528E RECZPZENT ID CODE/NAME PD4-2 PD INTERNAL: ACRS AEOD/SPD/RRAB NRR/DE/ECGB NRR/DE/EMEB NRR/DRCH/HOHB NRR/DRPM/PECB RES/DET/EIB EXTERNAL: L ST LOBBY WARD NOAC POORE,W.
NRC PDR COPIES LTTR ENCL 1
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RECIPZENT ID CODE/NAME FIELDS,M AEOD SPD RAB L
NRR/DE/EELB NRR/DRCH/HICB NRR/DRCH/HQMB NRR/DSSA/SPLB RGN4 FILE 01 LITCO BRYCE,J H NOAC QUEENER,DS NUDOCS FULL TXT COPIES LTTR ENCL 1
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'Palo Verde Nuclear Generating Station Greg g R Overbeck Vice President Nuclear Production TEL 602I393$ 148 FAX 602/3936077 Mail Station 7602 P.O. Box 52034 Phoenix, AZ 85072-2034 192-01027-GRO/DGM/REB September 3, 1998 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station P1-37 Washington, D.C. 20555-0001
Dear Sirs:
Subject:
Palo Verde Nuclear Generating Station (PVNGS)
Units 1, 2 and 3 Docket No. STN 50-528, 50-529, 50-530 License No. NPF41, NPF-51, NPF-74 Licensee Event Report 9840640 Attached please find Supplement 1 to Licensee Event Report (LER) 98-006-00 prepared and submitted pursuant, to 10 CFR 50.73. This LER supplement reports a condition where the High Pressure Safety Injection pump discharge check valves were misaligned resulting in unacceptable reverse flow. The LER contains speciTic commitments for correcting the condition.
In accordance with 10CFR50.73(d), a copy ofthis LER is being forwarded to the Regional Administrator, NRC Region IV. Ifyou have any questions, please contact Daniel G. Marks, Section Leader, Regulatory Affairs, at (602) 393-6492.
Sincerely, GRO/DGM/REB/I'Ih Attachment cc:
E. W. Merschoff M. B. Fields J. H. Moorman INPO Records Center (all with attachment)
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| 05000528/LER-1998-001, :on 980130,reactor Protection & ESFAS Instrumentation Not Bypassed within one-hour Allowed by TS Occurred.Caused by Inadequate Procedures.Expectation to Detect Alarm Conditions Was Emphasized to CR Personnel |
- on 980130,reactor Protection & ESFAS Instrumentation Not Bypassed within one-hour Allowed by TS Occurred.Caused by Inadequate Procedures.Expectation to Detect Alarm Conditions Was Emphasized to CR Personnel
| 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications
10 CFR 50.73(a)(2) | | 05000530/LER-1998-001-02, :on 980730,entered TS 3.0.3 Due to Safety Injection Flow Instruments Being Removed from Svc.Caused by Personnel Error.Transmitters Were Unisolated & Returned to Svc |
- on 980730,entered TS 3.0.3 Due to Safety Injection Flow Instruments Being Removed from Svc.Caused by Personnel Error.Transmitters Were Unisolated & Returned to Svc
| 10 CFR 50.73(a)(2)(i) | | 05000529/LER-1998-001-01, :on 980301,surveillance Test Deficiency Found During Qaa Leads to TS 3.0.3/4.0.3 Entry.Caused by Personnel Error.Personnel Responsible for Inadequately Performed SR Were Coached |
- on 980301,surveillance Test Deficiency Found During Qaa Leads to TS 3.0.3/4.0.3 Entry.Caused by Personnel Error.Personnel Responsible for Inadequately Performed SR Were Coached
| 10 CFR 50.73(s)(2)(v)
10 CFR 50.73(s)(2) | | 05000529/LER-1998-001, Forwards LER 98-001-00,which Describes TS Violation Due to Exceeding Specified Surveillance Interval Including Maximum Allowable Extension of 25% as Specified in TS SR 4.0.2 for TS SR 4.5.2.d.3 (Trisodium Phosphate) | Forwards LER 98-001-00,which Describes TS Violation Due to Exceeding Specified Surveillance Interval Including Maximum Allowable Extension of 25% as Specified in TS SR 4.0.2 for TS SR 4.5.2.d.3 (Trisodium Phosphate) | | | 05000530/LER-1998-002, Forwards LER 98-002-00,re Discovery & Correction of cross- Wired Power Supply Receptacle for B Train H Recombiner. No New Commitments Made by Util | Forwards LER 98-002-00,re Discovery & Correction of cross- Wired Power Supply Receptacle for B Train H Recombiner. No New Commitments Made by Util | | | 05000530/LER-1998-002-02, :on 980814,B Train H Recombiner Was Noted Inoperable Due to cross-wired Power Receptacle.Cause of Event Is Under investigation.Cross-wired Power Supply Receptacle for B Train H Recombiner Was re-wired |
- on 980814,B Train H Recombiner Was Noted Inoperable Due to cross-wired Power Receptacle.Cause of Event Is Under investigation.Cross-wired Power Supply Receptacle for B Train H Recombiner Was re-wired
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function
10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications
10 CFR 50.73(a)(2)
10 CFR 50.73(a)(2)(viii)(B) | | 05000529/LER-1998-002, Forwards LER 98-002-00 Prepared & Submitted,Per 10CFR50.73. LER Repts TS Violation Due to Improperly Performed Shiftly Channel Checked for Core Protection Calculators Following CPC Data Link Failure | Forwards LER 98-002-00 Prepared & Submitted,Per 10CFR50.73. LER Repts TS Violation Due to Improperly Performed Shiftly Channel Checked for Core Protection Calculators Following CPC Data Link Failure | | | 05000528/LER-1998-002, Forwards LER 98-002-00,which Repts Automatic Reactor Trip on Low SG Level Due to Insufficient Main Feedwater Flow.Ler Does Not Contain Commitments | Forwards LER 98-002-00,which Repts Automatic Reactor Trip on Low SG Level Due to Insufficient Main Feedwater Flow.Ler Does Not Contain Commitments | | | 05000530/LER-1998-002-01, Forwards LER 98-002-01,re Discovery & Correction of cross- Wired Power Supply Receptacle for B Train H Recombiner,Per 10CFR50.73 | Forwards LER 98-002-01,re Discovery & Correction of cross- Wired Power Supply Receptacle for B Train H Recombiner,Per 10CFR50.73 | | | 05000529/LER-1998-003-01, Forwards LER 98-003-01,per 10CFR50.73.Revised LER Provides Cause & Corrective Action for Delay in Bypassing Failed Instrument Used in PPS | Forwards LER 98-003-01,per 10CFR50.73.Revised LER Provides Cause & Corrective Action for Delay in Bypassing Failed Instrument Used in PPS | | | 05000529/LER-1998-003, :on 980113,discovered That One Channel of RWT Level Sys Had Failed High.Caused by Water Intrusion Into Electrical Termination Pull Box.Weep Holes Were Drilled Into Bottoms of Pull Boxes Nearest Level Transmitters |
- on 980113,discovered That One Channel of RWT Level Sys Had Failed High.Caused by Water Intrusion Into Electrical Termination Pull Box.Weep Holes Were Drilled Into Bottoms of Pull Boxes Nearest Level Transmitters
| 10 CFR 50.73(a)(2)(i)
10 CFR 50.73(a)(2)
10 CFR 50.73(s)(2)(ii) | | 05000530/LER-1998-003-02, :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 |
- 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
| 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability
10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications | | 05000530/LER-1998-003, Forwards LER 98-003-00 Prepared & Submitted Per 10CFR50.73.LER Repts out-of-tolerance Condition of Several MSSV Which Were Discovered During pre-outage Testing | Forwards LER 98-003-00 Prepared & Submitted Per 10CFR50.73.LER Repts out-of-tolerance Condition of Several MSSV Which Were Discovered During pre-outage Testing | | | 05000530/LER-1998-003-01, Forwards LER 98-003-01 Re MSSV as-found Lift Pressures out- Side of TS Limits.Ler Suppl Provides Evaluation Findings from Unit 3 out-of-tolerance MSSVs Conditions Which Were Discovered During pre-outage Testing | Forwards LER 98-003-01 Re MSSV as-found Lift Pressures out- Side of TS Limits.Ler Suppl Provides Evaluation Findings from Unit 3 out-of-tolerance MSSVs Conditions Which Were Discovered During pre-outage Testing | | | 05000528/LER-1998-003, Forwards LER 98-003-00 Reporting Unanalyzed Condition Which Exists When Automatic Fast Bus Transfer Capability Is Blocked to Prevent Transfer of non-class Plant Equipment from Unit Auxiliary to Startup Transformer | Forwards LER 98-003-00 Reporting Unanalyzed Condition Which Exists When Automatic Fast Bus Transfer Capability Is Blocked to Prevent Transfer of non-class Plant Equipment from Unit Auxiliary to Startup Transformer | | | 05000528/LER-1998-003-01, Forwards LER 98-003-01,IAW 10CFR50.73.Interim Corrective Actions Which Were Implemented to Control Fbt Blocking, Have Subsquently Been Discontinued Based Upon More Recent Analysis | Forwards LER 98-003-01,IAW 10CFR50.73.Interim Corrective Actions Which Were Implemented to Control Fbt Blocking, Have Subsquently Been Discontinued Based Upon More Recent Analysis | | | 05000529/LER-1998-004-01, :on 980630,personnel Discovered That Pressure Safety Valve Had Not Received Periodic Set Pressure Test for ASME Class 1 Pressure Safety Valve.Caused by Personnel Error.Pressure Safety Valve Reviewed |
- on 980630,personnel Discovered That Pressure Safety Valve Had Not Received Periodic Set Pressure Test for ASME Class 1 Pressure Safety Valve.Caused by Personnel Error.Pressure Safety Valve Reviewed
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function
10 CFR 50.73(a)(2)
10 CFR 50.73(s)(2)
10 CFR 50.73(s)(2)(6) | | 05000530/LER-1998-004, Forwards LER 98-004-00 Prepared & Submitted Pursuant to 10CFR50.73.LER Reports TS Violation Due to non-compliance with TS 3.9.3 for Not Establishing Containment Penetration Isolation During Core Alterations | Forwards LER 98-004-00 Prepared & Submitted Pursuant to 10CFR50.73.LER Reports TS Violation Due to non-compliance with TS 3.9.3 for Not Establishing Containment Penetration Isolation During Core Alterations | | | 05000528/LER-1998-004, :on 980304,safety Valves as-found Pressures Out of Tolerance.Cause of Event Is Under Investigation.Three MSSVs & Psv Will Be Replaced W/Refurbished & Recertified Valves During Refueling Outage U1R7 |
- on 980304,safety Valves as-found Pressures Out of Tolerance.Cause of Event Is Under Investigation.Three MSSVs & Psv Will Be Replaced W/Refurbished & Recertified Valves During Refueling Outage U1R7
| 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability
10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications | | 05000528/LER-1998-005, :on 980428,noted That Required Response Time Testing Had Not Been Performed.Caused by Personnel Error. Coached I&C Personnel Responsible for Reviewing Work Authorization Documentation |
- on 980428,noted That Required Response Time Testing Had Not Been Performed.Caused by Personnel Error. Coached I&C Personnel Responsible for Reviewing Work Authorization Documentation
| 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications | | 05000528/LER-1998-006, :on 980507,determined That Plant Was Outside Design Basis Due to SI Discharge Check Valve Reverse Flow. Check Valve Was Disassembled,Examined & Reassembled, Whereupon Valve Met Acceptance Criteria |
- on 980507,determined That Plant Was Outside Design Basis Due to SI Discharge Check Valve Reverse Flow. Check Valve Was Disassembled,Examined & Reassembled, Whereupon Valve Met Acceptance Criteria
| 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability
10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications | | 05000528/LER-1998-006-01, Forwards LER 98-006-01 Re Hpsip Discharge Check Valves Being Misaligned.Ler Contains Commitments for Correcting Condition | Forwards LER 98-006-01 Re Hpsip Discharge Check Valves Being Misaligned.Ler Contains Commitments for Correcting Condition | | | 05000528/LER-1998-007, :on 980520,CR Personnel Observed Flow & Pressure Perturbations on Chemical & Vol Control Sys Letdown Sys.Caused by Cyclic Fatigue Due to Dynamic Pressure Transients.Unit Letdown Piping Replaced |
- on 980520,CR Personnel Observed Flow & Pressure Perturbations on Chemical & Vol Control Sys Letdown Sys.Caused by Cyclic Fatigue Due to Dynamic Pressure Transients.Unit Letdown Piping Replaced
| 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications | | 05000528/LER-1998-007-01, Forwards LER 98-007-01 Re Letdown Leak That Required Entry Into TS LCO 3.0.3.LER Contains Specific Commitments for Correcting Condition | Forwards LER 98-007-01 Re Letdown Leak That Required Entry Into TS LCO 3.0.3.LER Contains Specific Commitments for Correcting Condition | | | 05000528/LER-1998-008, :on 980729,EQ of Electrical Connectors Were Not Adequately Demonstrated.Caused Because Test Was Conducted with Only Single Lv Connector & Without Fully Ranged Inputs. Revised EQ Requirements |
- on 980729,EQ of Electrical Connectors Were Not Adequately Demonstrated.Caused Because Test Was Conducted with Only Single Lv Connector & Without Fully Ranged Inputs. Revised EQ Requirements
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