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LER 89-020-01:on 891117,identified significant fuel damage during testing of fuel assemblies.Caused by debris which became lodged between lower fuel assembly & first spacer grid.Removed debris & reconstituted fuel assemblies.

LER 89-020-01:on 891117,identified significant fuel damage during testing of fuel assemblies.Caused by debris which became lodged between lower fuel assembly & first spacer grid.Removed debris & reconstituted fuel assemblies.
Paper図書
VAN, NOORDENNEN.CONNECTICUT YANKEE ATOMIC POWER CO.1998/06/04.
Other Libraries in Japan
  • Author HeadingVAN, NOORDENNEN.

LER 95-022-02:on 951215,identified potential that actual post of LOCA low pressure safety injection sys delivery rates may be less than safety analysis assumptions.Caused by sys flow path degradation or pump wear.Assessment performed.

LER 95-022-02:on 951215,identified potential that actual post of LOCA low pressure safety injection sys delivery rates may be less than safety analysis assumptions.Caused by sys flow path degradation or pump wear.Assessment performed.
Paper図書
VAN, NOORDENNEN.CONNECTICUT YANKEE ATOMIC POWER CO.1997/08/01.
Other Libraries in Japan
  • Author HeadingVAN, NOORDENNEN.

LER 96-028-01:on 961016,determined that containment personnel airlock hydraulic sys does not meet requirements of 10CFR50,App J for local leak rate testing.Caused by administrative oversight.Hydraulic sys modified.

LER 96-028-01:on 961016,determined that containment personnel airlock hydraulic sys does not meet requirements of 10CFR50,App J for local leak rate testing.Caused by administrative oversight.Hydraulic sys modified.
Paper図書
VAN, NOORDENNEN.CONNECTICUT YANKEE ATOMIC POWER CO.1997/07/07.
Other Libraries in Japan
  • Author HeadingVAN, NOORDENNEN.

LER 96-029-01:on 961024,primary auxiliary bldg internal flood protection design deficiencies identified.Caused by inadequate design review & inadequate design implementation. Floor penetrations modified.

LER 96-029-01:on 961024,primary auxiliary bldg internal flood protection design deficiencies identified.Caused by inadequate design review & inadequate design implementation. Floor penetrations modified.
Paper図書
VAN, NOORDENNEN.CONNECTICUT YANKEE ATOMIC POWER CO.1997/07/07.
Other Libraries in Japan
  • Author HeadingVAN, NOORDENNEN.

LER 96-018-01:on 960822,determined that feedwater regulating bypass valves would not fully isolate feedwater flow as required for main steam line break inside containment.Caused by erroneous assumption.Mod implemented prior to startup.

LER 96-018-01:on 960822,determined that feedwater regulating bypass valves would not fully isolate feedwater flow as required for main steam line break inside containment.Caused by erroneous assumption.Mod implemented prior to startup.
Paper図書
VAN, NOORDENNEN.CONNECTICUT YANKEE ATOMIC POWER CO.1997/07/07.
Other Libraries in Japan
  • Author HeadingVAN, NOORDENNEN.

LER 96-001-01:on 960111,determined that high side sensing line of instrument blocked.Caused by blocked sensing line & personnel failure to immediately identify problem w/gauge. Personnel counseled.

LER 96-001-01:on 960111,determined that high side sensing line of instrument blocked.Caused by blocked sensing line & personnel failure to immediately identify problem w/gauge. Personnel counseled.
Paper図書
VAN, NOORDENNEN.CONNECTICUT YANKEE ATOMIC POWER CO.1997/08/01.
Other Libraries in Japan
  • Author HeadingVAN, NOORDENNEN.

LER 95-017-01:on 950810,degraded weld was discovered in CAR fan svc water return pipe.Caused by galvanic corrosion. Replaced four dissimilar welds at inlet to throttle valves by installing carbon steel flanges.

LER 95-017-01:on 950810,degraded weld was discovered in CAR fan svc water return pipe.Caused by galvanic corrosion. Replaced four dissimilar welds at inlet to throttle valves by installing carbon steel flanges.
Paper図書
VAN, NOORDENNEN.CONNECTICUT YANKEE ATOMIC POWER CO.1997/08/01.
Other Libraries in Japan
  • Author HeadingVAN, NOORDENNEN.

LER 94-013-01:on 940505,HPSI common discharge header relief valve found to be lifting during performance of surveillance procedure.Caused by slightly high shutoff head of "B" HPSI pump coupled w/drifting.HPSI pump placed in trip pull out.

LER 94-013-01:on 940505,HPSI common discharge header relief valve found to be lifting during performance of surveillance procedure.Caused by slightly high shutoff head of "B" HPSI pump coupled w/drifting.HPSI pump placed in trip pull out.
Paper図書
VAN, NOORDENNEN.CONNECTICUT YANKEE ATOMIC POWER CO.1997/07/07.
Other Libraries in Japan
  • Author HeadingVAN, NOORDENNEN.

LER 96-014-01:on 960726,identified discrepancy in mesh sizing,screen fit-up & method of attachment.Caused by inadequate documentation of addition of screen during const coupled w/general acceptance.Sump screen replaced.

LER 96-014-01:on 960726,identified discrepancy in mesh sizing,screen fit-up & method of attachment.Caused by inadequate documentation of addition of screen during const coupled w/general acceptance.Sump screen replaced.
Paper図書
VAN, NOORDENNEN.CONNECTICUT YANKEE ATOMIC POWER CO.1997/08/01.
Other Libraries in Japan
  • Author HeadingVAN, NOORDENNEN.

LER 96-022-01:on 960901,RCS loop stop valves opened without timely boron sample.Caused by personnel error.Procedures revised.

LER 96-022-01:on 960901,RCS loop stop valves opened without timely boron sample.Caused by personnel error.Procedures revised.
Paper図書
VAN, NOORDENNEN.CONNECTICUT YANKEE ATOMIC POWER CO.1997/07/07.
Other Libraries in Japan
  • Author HeadingVAN, NOORDENNEN.

LER 96-011-01:on 960517,postulated break size could result in inadequate core cooling occurred.Caused by failure to recognize or analyze worst case adverse assumptions for entry into two path recirculation.Procedures changed.

LER 96-011-01:on 960517,postulated break size could result in inadequate core cooling occurred.Caused by failure to recognize or analyze worst case adverse assumptions for entry into two path recirculation.Procedures changed.
Paper図書
VAN, NOORDENNEN.CONNECTICUT YANKEE ATOMIC POWER CO.1997/07/07.
Other Libraries in Japan
  • Author HeadingVAN, NOORDENNEN.

LER 96-023-01:on 960814,three on four containment air recirculation fans did not meet TS requirement for air flow rates.Caused by test method variability.Containment air recirculation adjusted.

LER 96-023-01:on 960814,three on four containment air recirculation fans did not meet TS requirement for air flow rates.Caused by test method variability.Containment air recirculation adjusted.
Paper図書
VAN, NOORDENNEN.CONNECTICUT YANKEE ATOMIC POWER CO.1996/07/07.
Other Libraries in Japan
  • Author HeadingVAN, NOORDENNEN.

LER 94-021-01:on 940815,reactor shutdown due to rod position indication inaccuracies.Recalibr all control rod indication. Proposed C/A re replacement of IRPI sys will not be implemented since plant has ceased operation.W/970519 ltr.

LER 94-021-01:on 940815,reactor shutdown due to rod position indication inaccuracies.Recalibr all control rod indication. Proposed C/A re replacement of IRPI sys will not be implemented since plant has ceased operation.W/970519 ltr.
Paper図書
BOUCHARD, G. H.//VAN, NOORDENNEN.CONNECTICUT YANKEE ATOMIC POWER CO.1997/05/19.
Other Libraries in Japan
  • Author HeadingBOUCHARD, G. H.//VAN, NOORDENNEN.

LER 96-005-00:on 960212,discovered PEO improperly utilized to replace automatic backwash function of svc water strainer backwash sys.Caused by failure to enter TS action statement. Revise procedures for IST SWS pump operability.W/960313 ltr.

LER 96-005-00:on 960212,discovered PEO improperly utilized to replace automatic backwash function of svc water strainer backwash sys.Caused by failure to enter TS action statement. Revise procedures for IST SWS pump operability.W/960313 ltr.
Paper図書
RICHARDSON, P. M.//VAN, NOORDENNEN.NORTHEAST NUCLEAR ENERGY CO.1996/03/13.
Other Libraries in Japan
  • Author HeadingRICHARDSON, P. M.//VAN, NOORDENNEN.

LER 96-009-00:on 960216,post LOCA contianment pressure prevented timely extraction of PASS air sample & H sample. Caused by inadequate assessment of revised post LOCA response analysis.Implemented design change.W/960318 ltr.

LER 96-009-00:on 960216,post LOCA contianment pressure prevented timely extraction of PASS air sample & H sample. Caused by inadequate assessment of revised post LOCA response analysis.Implemented design change.W/960318 ltr.
Paper図書
RICHARDSON, P. M.//VAN, NOORDENNEN.NORTHEAST NUCLEAR ENERGY CO.1996/03/18.
Other Libraries in Japan
  • Author HeadingRICHARDSON, P. M.//VAN, NOORDENNEN.

LER 96-025-00:on 960401,identified encl bldg filtration actuation signal/auxiliary exhaust actuation signal interlock not tested periodically.Caused by programmatic deficiency.Plant procedure SP-2614D revised.W/960523 ltr.

LER 96-025-00:on 960401,identified encl bldg filtration actuation signal/auxiliary exhaust actuation signal interlock not tested periodically.Caused by programmatic deficiency.Plant procedure SP-2614D revised.W/960523 ltr.
Paper図書
RICHARDSON, P. M.//VAN, NOORDENNEN.NORTHEAST NUCLEAR ENERGY CO.1996/05/23.
Other Libraries in Japan
  • Author HeadingRICHARDSON, P. M.//VAN, NOORDENNEN.

LER 96-015-00:on 960312,failed to perform action requirement for TS LCO 3.3.1.1.Caused by failure to recognize applicability of TS during abnormal equipment configuration. Revised procedures.W/960411 ltr.

LER 96-015-00:on 960312,failed to perform action requirement for TS LCO 3.3.1.1.Caused by failure to recognize applicability of TS during abnormal equipment configuration. Revised procedures.W/960411 ltr.
Paper図書
RICHARDSON, P. M.//VAN, NOORDENNEN.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/04/11.
Other Libraries in Japan
  • Author HeadingRICHARDSON, P. M.//VAN, NOORDENNEN.

LER 96-006-00:on 960207,service water pump motor flood protection not provided.Caused by inadequate administrative controls.Administrative controls established.W/960307 ltr.

LER 96-006-00:on 960207,service water pump motor flood protection not provided.Caused by inadequate administrative controls.Administrative controls established.W/960307 ltr.
Paper図書
RICHARDSON, P. M.//VAN, NOORDENNEN.NORTHEAST NUCLEAR ENERGY CO.1996/03/07.
Other Libraries in Japan
  • Author HeadingRICHARDSON, P. M.//VAN, NOORDENNEN.

LER 94-039-01:on 941031,components not included in inservice test program identified.Caused by personnel error.No immediate action required.W/960307 ltr.

LER 94-039-01:on 941031,components not included in inservice test program identified.Caused by personnel error.No immediate action required.W/960307 ltr.
Paper図書
RICHARDSON, P. M.//VAN, NOORDENNEN.NORTHEAST NUCLEAR ENERGY CO.1996/03/07.
Other Libraries in Japan
  • Author HeadingRICHARDSON, P. M.//VAN, NOORDENNEN.

LER 94-019-01:on 940726,reactor coolant pump motor oil leaks occurred.Caused by ineffective maint of RCP motor oil sys, inconsistent stds & workmanship during RCP motor overhauls. Addl oil collection devices installed.W/960607 ltr.

LER 94-019-01:on 940726,reactor coolant pump motor oil leaks occurred.Caused by ineffective maint of RCP motor oil sys, inconsistent stds & workmanship during RCP motor overhauls. Addl oil collection devices installed.W/960607 ltr.
Paper図書
RICHARDSON, P. M.//VAN, NOORDENNEN.NORTHEAST NUCLEAR ENERGY CO.1996/06/07.
Other Libraries in Japan
  • Author HeadingRICHARDSON, P. M.//VAN, NOORDENNEN.
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