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Category:REPORTABLE OCCURRENCE REPORT (SEE ALSO AO LER)
MONTHYEARML20154H5291998-10-0808 October 1998 Special Rept:On 980928,meteorological Monitoring Instrumentation Channel Inoperable for Period Greater than 7 Days.Caused by Vendor to Follow Std Industry Practice for Calibr of Instrumentation.Instruments Installed ML20129B8991996-10-17017 October 1996 Special Rept:On 960919-22,DG Failures Experienced.Causes Could Not Be Conclusively Determined Although Kepner Tregoe Problem Analysis Identified Several Possible Causes. Components Identified Possible Contributors Being Monitored ML20065N1171994-04-25025 April 1994 Special Rept:On 940125,unplanned Reactor Trip & ECCS Actuation & Injection Into RCS Occurred.Total Accumulated Actuation Cycles for Four High Head Injection Lines Is Three ML20064N2381994-03-25025 March 1994 Ro:On 940316,determined Recorder 1-SM-X-6706 Inoperable for Indeterminate Period of Time.Caused by Corroded Sensors. Damaged Sensors Replaced & Recorder Returned to Svc on 940317 ML20059D9891994-01-0303 January 1994 Special Rept:On 931201,02,16,18 & 29,diesel Generator Failures Occurred.Causes & Corrective Actions Listed ML20127H3161993-01-15015 January 1993 Special Rept:On 921216,discovered That Prior to Closing EDG Output Breaker,Dg Output Voltage Was Offscale High.Caused by Valid EDG Start Failure.Silicon Controlled Recifier Bank a Placed Into Svc & Bank B Will Be Repaired or Replaced ML20079K9011991-10-31031 October 1991 Suppl to 910925 Special Rept:On 910826,train a Emergency Diesel Generator Tripped During post-maint Testing.Caused by Reversed Wiring Leads in Power Relays.Design Change Issued, Rewiring Performed & Input Leads Corrected ML20085D8251991-10-11011 October 1991 Special Rept:On 910911,EDG 1B Shutdown Due to Excessive Vibration.On 910916,EDG 1B Shutdown Due to Oil Leak on Cylinder 8.On 910919,EDG 1B Shutdown Due to Loud Noises from Air Start Distributor.Distributor Shaft Reinstalled ML20083D5741991-09-25025 September 1991 Special Rept:On 910826,A Train EDG Tripped.Trip Actuated by Reverse Power Relay.Root Cause Analysis Will Be Completed by 911030.Design Change Issued & Implemented to Correct Wiring of Subj Relays & Schematic Drawings ML20083D2951991-09-24024 September 1991 Special Rept:On 910825,Train a Emergency Diesel Generator Tripped on Low Lube Oil Pressure During post-maint Testing. Caused by Large Fluctuations in Engine Revolutions Per Minute.Procedures Re Auxiliary Lube Oil Pump Revised ML20247R5721989-09-25025 September 1989 Ro:On 890902,radiation Monitor Inoperable for Period Exceeding 7 Days.Caused by Installation of Nonfuse Dependent Isolation Devices in Communication Loops of Radiation Data Mgt Sys & Need for Relocation of Monitor Due to New Design ML20245G7151989-04-17017 April 1989 Ro:On 890316,train a Emergency Diesel Generator Tripped on Low Oil Pressure During Initial Startup.Caused by Engine Lube Oil Monitoring Circuit Becoming Active Before Engine Speed Developed Sufficient Lube Oil Pressure ML20154F3231988-09-0909 September 1988 Special Rept:On 880811,fuel Oil Leak Required Engine Shutdown & on 880812,Train B Emergency Diesel Generator Tripped.Caused by Incorrect Setting of Water Jacket Temp Controller.Adjustment Knob Protected from Misadjustment ML20207C3181988-07-22022 July 1988 Special Rept:On 880224,low Lube Oil Pressure Trip Occurred. Caused by 8-wk Maint Outage Resulting in Slower than Normal Engine Acceleration During Engine Start.Development of Design Change to Relocate Coolant Pressure Switch Underway ML20238E4601986-08-28028 August 1986 Partially Withheld Secrity Event Rept:On 860824,bomb Threat Received for Plants.Bomb Search Initiated.No Suspicious Objects Found 1998-10-08
[Table view] Category:TEXT-SAFETY REPORT
MONTHYEARML20217H2841999-09-30030 September 1999 Monthly Operating Rept for Sept 1999 for Seabrook Station. with ML20212D1461999-09-17017 September 1999 SER Accepting Request to Use Proposed Alternative to Certain Weld Repair Requirements in ASME Boiling & Pressure Vessel Code ML20216F5141999-08-31031 August 1999 Rept on Status of Public Petitions Under 10CFR2.206 ML20212B8671999-08-31031 August 1999 Monthly Operating Rept for Aug 1999 for Seabrook Station. with ML20210Q7581999-08-11011 August 1999 SER Approving Proposed Merger of CES & Bec,Which Will Create New Parent Company of Canal ML20210R9781999-08-0606 August 1999 ISI Exam Rept of Seabrook Station, for RFO 6,period 3 ML20210J8681999-08-0303 August 1999 SER Approving License Transfer from Montaup Electric Co to Little Bay Power Corp & Approval of Conforming Amend for Seabrook Station Unit 1 ML20210R6001999-07-31031 July 1999 Monthly Operating Rept for July 1999 for Seabrook Station, Unit 1.With ML20210H1151999-06-30030 June 1999 Naesc Semi-Annual Fitness-for-Duty Rept for 990101-0630 ML20209H1371999-06-30030 June 1999 Monthly Operating Rept for June 1999 for Seabrook Station, Unit 1.With ML20195G5391999-05-31031 May 1999 Monthly Operating Rept for May 1999 for Seabrook Station, Unit 1.With ML20195C0491999-05-25025 May 1999 Offshore Intake Seal Deterrent Barrier Design ML20206E4761999-04-30030 April 1999 LER 99-S01-00:on 990408,contractor Employee Was Granted Temporary Unescorted Access to Seabrook Station Protected Area.Caused by Failure of Contractor Employee to Provide Accurate Info.Individual Access Revoked.With ML20206N1751999-04-30030 April 1999 Monthly Operating Rept for Apr 1999 for Seabrook Station, Unit 1.With ML20196L2081999-04-19019 April 1999 Rev 01-07-00 to RE-21, Cycle 7 Colr ML20205K5441999-03-31031 March 1999 Decommissioning Update ML20205L8141999-03-31031 March 1999 Monthly Operating Rept for Mar 1999 for Seabrook Station. with ML20205C1981999-03-24024 March 1999 Safety Evaluation Concluding That Proposed Relief Request IR-8,Rev 1,provides Acceptable Alternative to ASME Code Requirements.Recommends Authorization of Proposed Alternative Pursuant to 10CFR50.55a(a)(3)(i) ML20207F4941999-02-28028 February 1999 Monthly Operating Rept for Feb 1999 for Seabrook Station. with ML20199E6731998-12-31031 December 1998 Monthly Operating Rept for Dec 1998 for Seabrook Station, Unit 1.With ML20198P1831998-12-31031 December 1998 LER 98-S01-00:on 981214,incomplete pre-employment Screening Records Was Noted.Caused by Failure of Contractor Employee to Provide Accurate Info.Subject Contractor Employees Employment Was Terminated.With ML20202E8241998-12-31031 December 1998 Naesc Semi-Annual Fitness-for-Duty Rept for 980701-981231 ML20196F5741998-12-0202 December 1998 Safety Evaluation Concluding That Licensee Has Established Acceptable Program to Verify Periodically design-basis Capability of safety-related MOVs at Seabrook ML20198B8661998-11-30030 November 1998 Monthly Operating Rept for Nov 1998 for Seabrook Station, Unit 1.With ML20195D0311998-10-31031 October 1998 Monthly Operating Rept for Oct 1998 for Seabrook Station, Unit 1.With ML20154H5291998-10-0808 October 1998 Special Rept:On 980928,meteorological Monitoring Instrumentation Channel Inoperable for Period Greater than 7 Days.Caused by Vendor to Follow Std Industry Practice for Calibr of Instrumentation.Instruments Installed ML20154M8421998-09-30030 September 1998 Monthly Operating Rept for Sept 1998 for Seabrook Generating Station,Unit 1.With ML20151V5951998-08-31031 August 1998 Monthly Operating Rept for Aug 1998 for Seabrook Station, Unit 1.With ML20237B4501998-07-31031 July 1998 Monthly Operating Rept for July 1998 for Seabrook Station ML20236R1781998-06-30030 June 1998 Naesc Semi-Annual Fitness-for-Duty Rept for 980101-0630 ML20236M3591998-06-30030 June 1998 Monthly Operating Rept for June 1998 for Seabrook Station, Unit 1 ML20237A4871998-06-0303 June 1998 North Atlantic Seabrook Station 1998 Exercise on 980603 ML20248M2951998-05-31031 May 1998 Monthly Operating Rept for May 1998 for Seabrook Station, Unit 1 ML20247G2641998-04-30030 April 1998 Monthly Operating Rept for Apr 1998 for Seabrook Station ML20247H3171998-04-27027 April 1998 Rev 1 to Seabrook Station SGs B & C Isi,May/June 1997 ML20216F8891998-03-31031 March 1998 Monthly Operating Rept for Mar 1998 for Seabrook Station 05000443/LER-1998-002, Re Potential Safety Injection Pump Runout Conditions Identified on 980113.LER 98-002-00 Retracted1998-03-20020 March 1998 Re Potential Safety Injection Pump Runout Conditions Identified on 980113.LER 98-002-00 Retracted ML20216H9211998-03-13013 March 1998 Fitness for Duty Program Performance Data Personnel Subject to 10CFR26 ML20248L2811998-02-28028 February 1998 Monthly Operating Rept for Feb 1998 for Seabrook Station, Unit 1 ML20197A7531998-02-27027 February 1998 Safety Evaluation Accepting License Request for Relief from ASME Code,Section IX Requirements Re Inservice Insp of RHR Heat Exchanger Nozzle Welds & Reactor Vessel Closure Head Nuts ML20202G3701998-01-31031 January 1998 Monthly Operating Rept for Jan 1998 for Seabrook Station ML20198G0271997-12-31031 December 1997 Commonwealth Energy Sys 1997 Annual Rept ML20248L7711997-12-31031 December 1997 Western Massachusetts Electric 1997 Annual Rept. Supporting Info,Encl ML20198G1021997-12-31031 December 1997 Baycorp Holdings 1997 Annual Rept ML20198N7021997-12-31031 December 1997 Monthly Operating Rept for Dec 1997 for Seabrook Station, Unit 1 ML20198G0351997-12-31031 December 1997 Eastern Edison Co 1997 Annual Rept ML20198G0681997-12-31031 December 1997 Taunton Municipal Lighting Plant 1997 Annual Rept ML20248L7671997-12-31031 December 1997 North Atlantic 1997 Annual Rept ML20198F9511997-12-31031 December 1997 United Illuminating Co 1997 Annual Rept ML20236M9561997-12-31031 December 1997 Amended Public Service of New Hampshire 1997 Annual Rept 1999-09-30
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New Hamoshire "ce S2=
8 Vice President Nuclear Produchon l
Yanke.e ~
NYN-89039 April 17, 1989 United States Nuclear Regulatory Commission Washington, DC 20555 Attention: Document Control Desk
Reference:
Facility Operating License No. NPF-56, Docket No. 50-443
Subject:
Diesel Generator Special Report i
Gentlemen: 4 The A Train Emergency Diesel Generator (EDG) tripped on low lube oil i pressure while performing post-maintenance testing on March 16, 1989. In accordance with Regulatory Position C.3.b of Pagulatcry Guide 1.108, Revision 1. August, 1977, a determination hau been made that this event is a non-valid EDG start failure. This event is being reported pursuant to Technical Specifications 4.8.1.1.3 and 6.8.2. At the time of this event the plant was in MODE 5 (cold shutdown) with the B Train EDG operable.
The A Train EDG tripped on low lube oil pressure during the initial starting sequence after performance of an alghteen month maintenance engine overhaul. A review of activities just prior to this start, as well as previous starts after maintenance periods, was conducted and concluded that a slow engine start could result in a low lube oil pressure trip. These engine trips are apparently caused by the engine lube oil monitoring circuit becoming active before the engine speed has developed sufficient lube oil pressure.
Corrective actions ,
No immediate corrective actions are being taken at this time since this and two similar previous lube oil trips have occurred dering the first start following maintenance or extended outages. These EDG trips do not cause any excessive engine wear since by procedure the engine is adequately prelubricated before each post-maintenance start. An EDG monitoring program will collect data during EDG starts efter extended outages and maintenance periods. The results of this data will be used to develop corrective actions as appropriate.
The above non-valid start failure does not count toward events that are considered as a valid start failure and will not require additional EDG testing to be performed.
h 030226 890417 ADOCM 05000443
.s PNV New Hampshire Yonkee Division of Public Service Company of New Hampshire ,
P.O. Box 300
- Telephone (603) 474 9521 ff
, e 3
4 United States Nuclear Regulatory Commission April 17, 1989 Attention: Document Control Desk Page 2 If you have any questions regarding this report, please contact Mr. Robert A. Gwinn at (603) 474-9521, extension 4056.
Very truly yours, C$ w George S. Thomas cc Mr. William T. Russell Regional Administrator United States Nuclear Regulatory Commission Region I 475 Allendale Road
. King of Prussia PA 19406 Mr. Victor Neroes, Project Manager Project Directorate I-3 United States Nuclear Regulatory Commission '
Division of Reactor Projects Washington, DC 20555 Mr. David G. Ruscitto NRC Senior Resident Inspector P.O. Box 1149 Seabrook, NH 03874 i
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