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Category:LICENSEE EVENT REPORT (SEE ALSO AO RO)
MONTHYEAR05000388/LER-1984-013, Attachments to LER 84-013-001984-09-13013 September 1984 Attachments to LER 84-013-00 05000387/LER-1984-012, Revised LER 84-012-01:on 840225,due Date & Violation Date Inadvertently Omitted from Cover Sheet of Quarterly Surveillance Procedure SI-072-301.Administrative Procedures Revised1984-06-14014 June 1984 Revised LER 84-012-01:on 840225,due Date & Violation Date Inadvertently Omitted from Cover Sheet of Quarterly Surveillance Procedure SI-072-301.Administrative Procedures Revised 05000387/LER-1984-017, Updated LER 84-017-01:on 840310,during Performance of Weekly Preventive Maint Activity,Spray Pond Riser Networks A-1 & B-2 Found Frozen.W/Advent of Mild Weather,Networks Thawed & Pumped down.Long-term Fixes Investigated1984-06-0606 June 1984 Updated LER 84-017-01:on 840310,during Performance of Weekly Preventive Maint Activity,Spray Pond Riser Networks A-1 & B-2 Found Frozen.W/Advent of Mild Weather,Networks Thawed & Pumped down.Long-term Fixes Investigated 05000387/LER-1984-001, Updated LER 84-001-01:on 840103,H2/O2 Analyzers in Containment Atmosphere Monitoring Sys Declared Inoperable Based on Vendor Info.Caused by Catalyst Inability to Withstand Iodine Concentrations1984-04-0909 April 1984 Updated LER 84-001-01:on 840103,H2/O2 Analyzers in Containment Atmosphere Monitoring Sys Declared Inoperable Based on Vendor Info.Caused by Catalyst Inability to Withstand Iodine Concentrations 05000387/LER-1983-153, Updated LER 83-153/03X-1:on 831102,fuse Supplying Power to Topaz Inverter Blew,Deenergizing RCIC Instruments at Remote Shutdown Panel.Cause Not Stated.Fuse Replaced. W/840320 Ltr1984-03-20020 March 1984 Updated LER 83-153/03X-1:on 831102,fuse Supplying Power to Topaz Inverter Blew,Deenergizing RCIC Instruments at Remote Shutdown Panel.Cause Not Stated.Fuse Replaced. W/840320 Ltr 05000387/LER-1983-066, Updated LER 83-066/03X-1:on 830414,during Mod to Remove Check Valve,Valve Disk Found Lodged in Pipe & Various Small Valve Parts Missing.Caused by Extensive Sys run-time During Resolution of ESW Waterhammer problem.W/840307 Ltr1984-03-0707 March 1984 Updated LER 83-066/03X-1:on 830414,during Mod to Remove Check Valve,Valve Disk Found Lodged in Pipe & Various Small Valve Parts Missing.Caused by Extensive Sys run-time During Resolution of ESW Waterhammer problem.W/840307 Ltr 05000387/LER-1982-016, Reissued LER 82-016/01T-1:on 820920,mechanical Vacuum Pump Left in Svc After Ventilation Monitoring Sys Noble Gas Monitor Became Inoperable on 820918.Caused by Operator Not Noting All Parts of Applicable Action Statements1982-10-11011 October 1982 Reissued LER 82-016/01T-1:on 820920,mechanical Vacuum Pump Left in Svc After Ventilation Monitoring Sys Noble Gas Monitor Became Inoperable on 820918.Caused by Operator Not Noting All Parts of Applicable Action Statements 1984-09-13
[Table view] Category:TEXT-SAFETY REPORT
MONTHYEARML20217A9931999-09-30030 September 1999 NRC Regulatory Assessment & Oversight Pilot Program, Performance Indicator Data ML17146B1741999-08-0303 August 1999 GL 96-06 Risk Assessment for Sses. ML20206D3331999-04-27027 April 1999 SER of Individual Plant Examination of External Events Submittal on Susquehanna Steam Electric Station,Units 1 & 2. Staff Notes That Licensee IPEEE Complete with Regard to Info Requested by Suppl 4 to GL 88-20 ML20195B2381999-03-31031 March 1999 Redacted Version for 10CFR2.790 Request for Decommissioning Status Rept for Sses,Units 1 & 2 ML17164A8451998-10-31031 October 1998 SSES Unit 1 Tenth Refueling & Insp Outage ISI Outage Summary Rept. ML20236N6751998-07-0909 July 1998 Part 21 & Deficiency Rept Re Notification of Potential Safety Hazard from Breakage of Cast Iron Suction Heads in Apkd Type Pumps.Caused by Migration of Suction Head Journal Sleeve Along Lower End of Pump Shaft.Will Inspect Pumps ML20217Q4891998-04-21021 April 1998 Rev 1 to Draft LDCN 2482, FSAR Chapter 13.4 & FSAR Chapter 17.2 Changes to Support ITS Implementation ML18026A4931998-03-30030 March 1998 LER 97-007-01:on 971017,entry Into TS 3.0.3 Occurred to Allow Completion of Surveillance Testing of One Channel of Rbm.Caused by Failure of Components in LPRM Output to Rbm. Submitted TS Change Request to Extend LCO Action Statement ML18026A5401998-02-28028 February 1998 Monthly Operating Repts for Feb 1998 for Susquehanna Steam Electric Station.W/980313 Ltr ML18026A4891997-11-17017 November 1997 LER 97-007-00:on 971017,TS 3.0.3 Entry Voluntarily Made. Caused by Inadequate Post Maint Testing Following Earlier Work Associated W/Components.Failed Components Repaired, Replaced & Testing Completed ML18017A2921997-10-28028 October 1997 1997 Nrc/Fema Observed Exercise. ML17158C1861997-06-0505 June 1997 Proceedings of Intl Topical Meeting on Advanced Reactors Safety Vol II, on 970601-05 ML20140A9661997-05-29029 May 1997 Part 21 Rept Re Ksv Emergency Diesel Generator Power Piston Failure.Caused by Jacket Water in Combustion Chamber. Recommends That Users Verify That Crown Thickness at Valve Cutout Be 100 Minimum ML18026A4781997-03-28028 March 1997 Rev 1 to Application of Anfb to ATRIUM-10 for Susquehanna Reloads. ML20137G6261997-03-25025 March 1997 Svcs Part 21 Rept Re Emergency Generators Installed at Zion Station Which Developed Significant Drop in Crankcase Lube Oil Level.Caused by Crack in Liner Wall,Allowing Jacket Water to Enter Chamber ML20155F7661996-07-25025 July 1996 Partially Deleted Job Number 739619-96, Investigation of E Diesel Breaker Misalignment ML20155F7491996-07-24024 July 1996 Independent Safety Evaluation Svcs Project Rept 3-96, Investigation of E Diesel Generator In-Operability Event ML20117G4641996-05-14014 May 1996 Part 21 Rept Re Cooper Bessemer Reciprocating Products,Div of Cooper Cameron Corp,Issued Ltr to Define Utils/Plants Containing Similar Equipment as Supplied on Cooper Bessemer Ksv & Enterprise Dsr EDGs ML18026A5961996-01-0202 January 1996 LER 95-013-00:on 951119,thermally Induced Pressure Locking of HPCI Valve Occurred Under Bonnet Pressure of 3,000-7,000 Psig.Damaged HPCI Injection Valve repaired.W/960102 Ltr ML18017A0511995-11-30030 November 1995 Monthly Operating Repts for Nov 1995 for SSES Units 1 & 2. W/951215 Ltr ML20092H7641995-08-31031 August 1995 Monthly Operating Repts for Aug 1995 for Susquehanna Ses ML17158A8771995-08-15015 August 1995 Exercise Manual. ML17158A8061995-07-14014 July 1995 Books 1 & 2 of ISI Outage Summary Rept SSES Unit 1 8th Refuel Outage. ML18017A0461995-07-0707 July 1995 LER 95-008-00:on 950609,shift Average Licensed Core Thermal Power Was Exceeded.Caused by Failed Instrumentation Drift. Repaired & Recalibrated Subject Instrumentation ML17164A6631995-04-11011 April 1995 Impact of Extending T-10 AOT from 3 to 7 Days. ML17164A5871995-01-31031 January 1995 Monthly Operating Repts for Jan 1995 for Susquehanna Ses ML18026A5351994-10-31031 October 1994 SSES Unit 1 & 2 MSIV Leakage Alternate Treatment Method Seismic Evaluation. W/One Oversize Drawing ML17158A4821994-08-23023 August 1994 ISI Outage Summary Rept Unit 2 6th Refueling Outage, Books 1 & 2 of 2 ML17158A2391994-04-0505 April 1994 Books 1 & 2 of SSES Unit 1 Seventh Refueling & Insp Outage ISI Outage Summary Rept. ML18017A2701993-12-31031 December 1993 PP&L Annual Rept 1993. ML17158A2651993-12-31031 December 1993 Allegheny Electric Cooperative,Inc Annual Rept 1993. ML17158A1631993-12-0909 December 1993 Remote Indication of Spent Fuel Pool Level & Temperature. ML18026A4281993-08-16016 August 1993 PP&L Response to NRC Concerns Re Loss of Spent Fuel Pool Cooling Following Loca,Sses,Units 1 & 2. ML18026A4261993-06-0909 June 1993 LER 90-007-01:on 900705,primary Power Supply to RPS a Power Distribution Panel Lost When One Electrical Protection Assembly (EPA) Breaker Tripped.Epa Logic Cards Reviewed & RPS Power Supply Will Be redesigned.W/930609 Ltr ML17157C2441993-02-28028 February 1993 Monthly Operating Rept for Feb 1993 for Susquehanna Steam Electric Station,Units 1 & 2 ML18017A2031993-02-0101 February 1993 Books 1 & 2 of Unit 2 Fifth Refueling & Insp Outage,Isi Outage Summary Rept. ML20044C2741993-01-31031 January 1993 Corrected Monthly Operating Rept for Jan 1993 for Susquehanna Steam Electric Station,Unit 2,consisting of Info on Unit Shutdowns & Power Reductions ML17157C3691992-12-31031 December 1992 PP&L Annual Rept 1992. ML20056C3941992-12-31031 December 1992 Allegheny Electric Cooperative,Inc Annual Rept 1992 ML18017A0421992-12-14014 December 1992 Suppl to 921127 Part 21 Rept Re High Air Concentration in Reactor Bldg Making Area Uninhabitable for Retrieving Air Filters,Per NUREG-0737,Item II.F.1.Util Current Position Re Fuel Pool Cooling Issues Contrary to Reg Guide 1.3 ML18026A2481992-11-27027 November 1992 Part 21 Rept Re Substantial Safety Hazard in Design of Facility for Loss of Normal Spent Fuel Pool Cooling ML18026A4231992-11-17017 November 1992 LER 92-016-00:on 920416,discovered That Existing Analysis for Two Spent Fuel Storage Pools Did Not Reflect Current Fuel Design & Plant Operation.Caused by Failure to Modify FSAR Analysis.Fsar Will Be revised.W/921117 Ltr ML17157C1421992-10-21021 October 1992 Engineering Assessment of Fuel Pool Cooling Piping EDR-G20020. ML17157C1411992-08-31031 August 1992 Loss of Fuel Pool Cooling Event Evaluation. ML17157C1401992-08-31031 August 1992 Review of Fuel Pool Cooling During Postulated Off-Normal & Accident Events SSES Units 1 & 2. ML20082C4941992-08-14014 August 1992 Evaluation of Unit 1 & Unit 2 Derating of Power Cables in Raceways Wrapped W/Thermo-Lag Matl ML17157C1381992-07-27027 July 1992 Safety Consequences of Boiling Spent Fuel Pool at Susquehanna Steam Electric Station. ML17157B9331992-07-24024 July 1992 Sixth Refueling & Insp Outage Inservice Insp Outage Summary Rept, Books 1 & 2 ML20097D4681991-12-31031 December 1991 Pennsylvania Power & Light Company,1991 Annual Rept ML18017A0391991-07-26026 July 1991 LER 91-010-00:on 910628,RWCU Isolated on Two Occassions Due to Actuations of Steam Leak Detection Instrumentation. Caused by Design Deficiency & Elevated Ambient Penetration Room Temps.Temp Modules replaced.W/910726 Ltr 1999-09-30
[Table view] |
LER-2084-017, Updated LER 84-017-01:on 840310,during Performance of Weekly Preventive Maint Activity,Spray Pond Riser Networks A-1 & B-2 Found Frozen.W/Advent of Mild Weather,Networks Thawed & Pumped down.Long-term Fixes Investigated |
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NRC Pere 300 U S. NUCLEAR EEGULATO2V COMMIS$60N APcROVED OMe No 3150-4104
'"REs ar3i en LICENSEE EVENT REPORT (LER)
DOCKET NUMSER (2) PAGE G FACILITY NAME Hi Susquehanna Steam Electric Station - Unit 1 o l5 l 0 l 010131817 1 lOFl0 13 TITLE toe Emercency Service Water Spray Networks Frozen.
EVENT DATE (El LER NunaBER (6) REPORT DATE 171 OTHER F ACILITIES INVOLVED (Si YEAR IIQ 'A' '
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NAME TELEPHONE NUMSER ARE A CQDE l L.A. Kuczynski - Nuclear Plant Specialist III l 711 17 514121-l31715 19 CoasPLETE ONE LINE FOR EACM COMPONENT P A8 LURE DESCRISED IN TMeS REPORT (13)
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""""} No ol9 9 l3 gl4 AeST ACT (bmst M 7400 more, u, aseroseviemy hfmen sempeasce rueentma haeW 088 The A-1 (89 risers) and B-2 (43 risers) spray pond riser networks were found to be frozen during the performance of a weekly preventive maintenance activity to pump down the risers. Af ter four days of milder weather, all four networks were thawed out and successfully pumped down. Unit I was shut down throughout the event; Unit 2 was in a pre-fuel load status. All spray headers and risers were inspected and no damage was found. The networks were pumped down every two days and monitored for leakage every day until March 31, 1984, when it was considered that the probability of the risers freezing again would be very low. Long term fixes are being investigated that will ensure that freezing of the spray networks does not occur again.
8406130119 e40606 gDRADOCK 05000387 PDR NaC ew. 3 (9431
e NRC Feren 3e4A U S. NUCLE AR KEGULATO3Y COMMIS$lON LICENSEE EVENT REPORT (LER) TEXT CONTINUATION AreRovEo oMe No siso-oio.
EXPERES 8/3i/85 FACILITY NAME (1) DOCKET NUMSER C4) LER NUMSER (6) PAGE431 ygg, stoutw eat . Revtsooav Susquehanna Steam Electric Station " " " "
Unit 1 015 lo [0 l0 l318l 7 8]4 -
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0l 1 0l 2 OF 0l3 TEXT rs o m <wer.ni.asse,nm During the investigation performed in response to spray pond riser crm damage caused by ice formation on the spray nozzles (LERs84-002 and 84-002, Rev. 1), concerns were raised that leakag a past the seats of the spray pond riser network inlet valves (2-30 in butterfly) could lead to ice formation in the risers themselves. A preventive maintenance activity was instituted to pump down the riser networks on a weekly basis to min-imize the possibility of freezing in the risers. Routinc maintenance of the riser network inlet valves is impractical since complete isolation of ESW is required and results in a one hour L.C.O.
The A-1, A-2, B-1 and B-2 spray pond networks were pumped down for the first time under the new procedure in February 27, 1984 at 2240 hours0.0259 days <br />0.622 hours <br />0.0037 weeks <br />8.5232e-4 months <br />.
On March 7, 1984 at 1505 hours0.0174 days <br />0.418 hours <br />0.00249 weeks <br />5.726525e-4 months <br /> the B-1 and B-2 networks were successfully pumped down. The A-1 and A-2 network pumpdown was not attemped because of a prerequisite in the pumpdown procedure which required RHttSW and ESW systems to be shut down. When ESW and RHRSW are running, it is very diffi-cult to pump down the networks associated with this loop. The spray piping drain pump discharges into the RHRSW Bypass line upstream of a restricting orifice. When RHRSW and ESW pumps are running (discharging through the bypass line), sufficient back pressure is created by the restricting orifice to drive the capacity of the drain pump far back cn its pump curve (small flow). A combination of this small flow and the leakage past the isolation valves, makes the time to drain down a network excessively long. The A loop of RHRSW was required to be running to support other plant evolutions and was not able to be shut down. On March 10, 1984, the A-1 and A-2 spray networks were attemped to be pumped down. The A-2 network was successfully drained but the A-1 network had indications of being frozen (no flow ob-served thru the A-1 spray network). After determining the A-1 network was frozen, the B-1 and B-2 networks were examined for similar conditions.
The B-1 network was not frozen and the B-2 network was suspected to be frozen. Outside air temperature was approximately'6*F when the frozen networks were identified.
Even though;a Limiting Condition for Operation was not incurred because of the risers being frozen, Unit I was in cold shutdown and Unit 2 was pre-fuel load, all risers were to be returned to service prior to re-start of Unit 1. Ambient temperatures moderated over the next few days and all riser networks were able to be pumped down when the procedure was run on March 14, 1984.- All spray headers and risers were inspected and no damage was found. '
From March 14, 1984 through March-31, 1984, the riser networks were pumped .
down every two days and monitored for leakage every day. Present directions regarding riser network pumpdown specify that, between September 1 and March.
- 31, the pumpdown will be done once per week, except when either of the following occur:
- when the outside air temperature drops 'to 35*F, riser' pumpdown will commence within 12 hrs., and will occur once every two days while temperature-is-below 35'F, or E ,"." N "" ""
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NRC Feem 3e6A u 5 huCLEAM P!MLATORY COMD SUON LICENSEE EVENT REPORT (LER) TEXT CONTINUATION AreaovEo own No mo-oi a ExPtRES 8/31 M FACILITY NAME 11) , DOCKET NUMSER (21 LER NUMSEP (El PAGE (3)
Susquehanna Steam Electric Station . . . sagn 7v;5,y; Unit 1 1 0F 0151010101318 l 7 8 14 0 l1 l 7 l-- 0 10 0I3 0 l3 TEXT t# more apoco e regu.e4 see seutonalNAC form JK4'sJ 817)
-when the outside air temperature drops to 33*F, riser pumpdown will commence within one naur and will occur once every two days while temperature is below 33*F.
Guidelines have also been developed for spray pond operation to avoid freezing fo the risers and spray nozzles at low ambient temperature (32*F or below) when Residual Heat Removal Service Water (RHRSW) and Emergency Service Water (ESW) system heat loads make it desirable to direct flow through the spray networks. If pond temperature is above 75*F, the sprays may be run with the riser network bypass valves closed. This configuration insures that the pond can provide adequate cooling under even the worst case heat loads under the most severe hot weather meteorological condition anticipated. If pond temperature is between 60*F and 70*F, the sprays should be run with the riser netwcrk bypasu valves open. This configu-ration provides moderate cooling and regulation of the rate of change of pond temperature. If the pond temperature is A0*F or less, the cr7;/s should remain isolated with the riser ne.twork bypass valves open. If tne pond temperature is less than 60*F and the use of sprays is unavoidable, flow through the sprays should be maintained so that the height of the sprays is 4-12 inches above the nozzles (accomplished by opening the by-pass valve). If the sprays are ooerated in this range, a stagnant con-dition is avoided and the potential for free n ing is reduced because droplet sizes are maximized and the amount of time t he droplets are exposed to the air is minimized.
This occurrencs is reported under 10CFR50.73(a)(2)(v), because one large and one small spray network would have been unable to perform their safety function of heat removal from cooling water used in the Emergency Service Water system and the Residual Heat Removal Service Water system. Since positive assurance could not be provided that the frozen risers would be thawed prior to the need to utilize the spray network, it must be assumed that the single failure criteria for the spray network could no longer be met. The Station's FSAR (Section 9.2.7.3.1) contains analysis of spray pond capabilities under a LOCA/ Forced Shutdown scenario with only one spray network available, and concludes that the spray pond would still meet the performance requirements of an ultimate heat. sink. Thus, while the single failure criteria could not be met, the units could have been safely maintained under a LOCA/ Forced Shutdown situation (A-2 and B-1 spray arrays were available throughout this event). Also, engineering
. evaluation has shown that for single unit - operation, a LOCA can be safely dissapated by only one large array. (At the date of occurrence, only
. one unit was licensed for operation and one large and one small array were -
available for operation.) The bypass lines which allow returning water to be injected directly to the spray pond without passing through a spray network were available for operation throughout the. event.
Long term fixes'will be developed and submitted.to NRC Region.I by September 1
1, 1984, to ensure the freezing of the' spray header does.not. reoccur.
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PP&l; Pennsylvania Power & Light Company
June 6, 1984 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 SUSQUEHANNA STEAM ELECTRIC STATION LICENSEE EVENT REPORT 84-017-01 ER 100450 FILE 841-23 Docket No. 50-387 PLA-2228 License No. NPF-14 Attached is Licensee Event Report 84-017-01. This event was determined to be reportable per 10CFR50.73(a)(2)(v) in that, during a preventive maintenance activity to pump down the spray pond network risers, portions 1 f the spray pond network risers were discovered to be frozen. A long-term fix will be developed and submitted to NRC Region I by September 1,1984.
H.W. Keiser Superintendent of Plant-Susquehanna LAK/pjg cc: Dr. Thomas E. Murley Regional Administrator, Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406 Mr. R.H. Jacobs Senior Resident Inspector U.S. Nuclear Regulatory Commission P.O. Box 52 Shickshinny, PA 18655 ff*S$
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05000387/LER-1984-001, Updated LER 84-001-01:on 840103,H2/O2 Analyzers in Containment Atmosphere Monitoring Sys Declared Inoperable Based on Vendor Info.Caused by Catalyst Inability to Withstand Iodine Concentrations | Updated LER 84-001-01:on 840103,H2/O2 Analyzers in Containment Atmosphere Monitoring Sys Declared Inoperable Based on Vendor Info.Caused by Catalyst Inability to Withstand Iodine Concentrations | | 05000387/LER-1984-012, Revised LER 84-012-01:on 840225,due Date & Violation Date Inadvertently Omitted from Cover Sheet of Quarterly Surveillance Procedure SI-072-301.Administrative Procedures Revised | Revised LER 84-012-01:on 840225,due Date & Violation Date Inadvertently Omitted from Cover Sheet of Quarterly Surveillance Procedure SI-072-301.Administrative Procedures Revised | | 05000388/LER-1984-013, Attachments to LER 84-013-00 | Attachments to LER 84-013-00 | | 05000387/LER-1984-017, Updated LER 84-017-01:on 840310,during Performance of Weekly Preventive Maint Activity,Spray Pond Riser Networks A-1 & B-2 Found Frozen.W/Advent of Mild Weather,Networks Thawed & Pumped down.Long-term Fixes Investigated | Updated LER 84-017-01:on 840310,during Performance of Weekly Preventive Maint Activity,Spray Pond Riser Networks A-1 & B-2 Found Frozen.W/Advent of Mild Weather,Networks Thawed & Pumped down.Long-term Fixes Investigated | | 05000387/LER-1984-047, Forwards LER 84-047-00,originally Issued on 841130.LER Reissued Due to Apparent Distribution Problems | Forwards LER 84-047-00,originally Issued on 841130.LER Reissued Due to Apparent Distribution Problems | |
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