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LER 96-002-00:on 960310,inadequate surveillance for determining shutdown margin when unisolating RCL identified. Caused by inadequate procedure.Procedures revised.

LER 96-002-00:on 960310,inadequate surveillance for determining shutdown margin when unisolating RCL identified. Caused by inadequate procedure.Procedures revised.
Paper図書
TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.1996/04/08.
Other Libraries in Japan
  • Author HeadingTEMPLE, W. J.

LER 96-003-00:on 960312,temporary I-Beams located overhead of recirculation spray sys HXs discovered.Caused by inadequate work control.Work control procedures revised.

LER 96-003-00:on 960312,temporary I-Beams located overhead of recirculation spray sys HXs discovered.Caused by inadequate work control.Work control procedures revised.
Paper図書
TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.1996/04/04.
Other Libraries in Japan
  • Author HeadingTEMPLE, W. J.

LER 96-019-00:on 960627,RCS PORV Block Valves were determined to be unable to perform intended safety functions.Caused by structural design deficiency.C/A will be provided in supplement to rept.W/960726 ltr.

LER 96-019-00:on 960627,RCS PORV Block Valves were determined to be unable to perform intended safety functions.Caused by structural design deficiency.C/A will be provided in supplement to rept.W/960726 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/07/26.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-016-00:on 960619,switchgear cabinet in noncompliance w/seismic design basis & subsequently inadvertent ESFA signal occurred.Personnel did not latch known seismic latches as required.Engaged latches.W/960712 ltr.

LER 96-016-00:on 960619,switchgear cabinet in noncompliance w/seismic design basis & subsequently inadvertent ESFA signal occurred.Personnel did not latch known seismic latches as required.Engaged latches.W/960712 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/07/12.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-020-00:on 960627,Mode 5 of MS Motor Driven Atmospheric Relief Valves were determined not to be able to perform safety functions.Caused by personnel error.Revised Design Basis Review & thrust calculation.W/960726 ltr.

LER 96-020-00:on 960627,Mode 5 of MS Motor Driven Atmospheric Relief Valves were determined not to be able to perform safety functions.Caused by personnel error.Revised Design Basis Review & thrust calculation.W/960726 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/07/26.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-021-00:on 960628,failed to include components in In-Service Test (IST) Program.Caused by programmatic deficiency.Reviewed IST Program & revised surveillance procedures and IST basis documents.W/960726 ltr.

LER 96-021-00:on 960628,failed to include components in In-Service Test (IST) Program.Caused by programmatic deficiency.Reviewed IST Program & revised surveillance procedures and IST basis documents.W/960726 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/07/26.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-015-00:on 960610,determined inadequate electrical separation between redundant protection trains.Cause undetermined.Reworked reactor trip switch & reactor trip breaker indicating lights.W/960709 ltr.

LER 96-015-00:on 960610,determined inadequate electrical separation between redundant protection trains.Cause undetermined.Reworked reactor trip switch & reactor trip breaker indicating lights.W/960709 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/07/09.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-010-00:on 960425,determined that potential failure mode of rod control sys Acopian power supplies could create unanalyzed condition.Caused by inadequate design review. Reset feature will be deleted.W/960523 ltr.

LER 96-010-00:on 960425,determined that potential failure mode of rod control sys Acopian power supplies could create unanalyzed condition.Caused by inadequate design review. Reset feature will be deleted.W/960523 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/05/23.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-022-00:on 960722,EDG control panel noncompliance w/seismic design basis occurred.Caused by personnel error. All latches repaired & restored.W/960726 ltr.

LER 96-022-00:on 960722,EDG control panel noncompliance w/seismic design basis occurred.Caused by personnel error. All latches repaired & restored.W/960726 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/07/26.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-017-00:on 960621,determined design deficiency existed in tornado protection ventilation dampers,could have affected EDGs following tornado.Caused by inadequate original plant const design.Procedure revised.W/960719 ltr.

LER 96-017-00:on 960621,determined design deficiency existed in tornado protection ventilation dampers,could have affected EDGs following tornado.Caused by inadequate original plant const design.Procedure revised.W/960719 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/07/19.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-013-00:on 960515,determined design deficiency in Residual Heat Removal System (RHS).Caused by original plant design.Corrective actions will be described in supplement. W/960614 ltr.

LER 96-013-00:on 960515,determined design deficiency in Residual Heat Removal System (RHS).Caused by original plant design.Corrective actions will be described in supplement. W/960614 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/06/14.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-012-00:on 960515,containment leakage exceeded Tech Spec limit.Caused by boric acid residue.Performed flush of line to remove boron deposits.W/960614 ltr.

LER 96-012-00:on 960515,containment leakage exceeded Tech Spec limit.Caused by boric acid residue.Performed flush of line to remove boron deposits.W/960614 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/06/14.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-014-02:on 960516,surveillances for Emergency Diesel Generator performed during operation,versus shutdown.Caused by misinterpretation of shutdown stipulation.Surveillances performed during shutdown.W/960614 ltr.

LER 96-014-02:on 960516,surveillances for Emergency Diesel Generator performed during operation,versus shutdown.Caused by misinterpretation of shutdown stipulation.Surveillances performed during shutdown.W/960614 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/06/14.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-009-00:on 960423,discovered that channels of shutdown margin monitors (SMM) inoperable due to low count rate. Caused by inadequate design control.Reduced setpoint at which SMM alarms.W/960521 ltr.

LER 96-009-00:on 960423,discovered that channels of shutdown margin monitors (SMM) inoperable due to low count rate. Caused by inadequate design control.Reduced setpoint at which SMM alarms.W/960521 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/05/21.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-018-00:on 960621,determined degraded concrete pedestal for svc water sys booster pump rendered inoperable. Caused by salt water intrusion from seal leakage.Degraded pedestal repaired.W/960719 ltr.

LER 96-018-00:on 960621,determined degraded concrete pedestal for svc water sys booster pump rendered inoperable. Caused by salt water intrusion from seal leakage.Degraded pedestal repaired.W/960719 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/07/19.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-008-00:on 960412,reactor protection sys lead/lag time constants found non-conservative.Caused by failure of vendor to identify conservative calibr requirements.TSs changed to correctly identify direction of conservatism.W/960510 ltr.

LER 96-008-00:on 960412,reactor protection sys lead/lag time constants found non-conservative.Caused by failure of vendor to identify conservative calibr requirements.TSs changed to correctly identify direction of conservatism.W/960510 ltr.
Paper図書
BROTHER, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/05/10.
Other Libraries in Japan
  • Author HeadingBROTHER, M. H.//TEMPLE, W. J.

LER 96-007-00:on 960403,CRS & QS sys found outside design basis due to design errors.Restored sys to appropriate design basis requirements prior to declaring sys inoperable. W/960502 ltr.

LER 96-007-00:on 960403,CRS & QS sys found outside design basis due to design errors.Restored sys to appropriate design basis requirements prior to declaring sys inoperable. W/960502 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES1996/05/02.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-004-00:on 960316,auxiliary feedwater isolation valves noncompliance w/TS occurred.Caused by misinterpretation of TS.Event reviewed w/station personnel to caution others on TS surveillance requirements.W/960416 ltr.

LER 96-004-00:on 960316,auxiliary feedwater isolation valves noncompliance w/TS occurred.Caused by misinterpretation of TS.Event reviewed w/station personnel to caution others on TS surveillance requirements.W/960416 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.,NORTHEAST UTILITIES SERVICE CO.1996/04/16.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-006-00:on 960330,plant shutdown required by TS for AFW containment isolation valves declared inoperable.Caused by opened valves outside containment.Unit was shutdown in orderly manner.W/960426 ltr.

LER 96-006-00:on 960330,plant shutdown required by TS for AFW containment isolation valves declared inoperable.Caused by opened valves outside containment.Unit was shutdown in orderly manner.W/960426 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.1996/04/26.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.

LER 96-011-00:on 960512,determined that both trains of CR envelope pressurization sys inoperable due to imbalance in air-conditioning sys.CR air-conditioning sys rebalanced.W/ 960610 ltr.

LER 96-011-00:on 960512,determined that both trains of CR envelope pressurization sys inoperable due to imbalance in air-conditioning sys.CR air-conditioning sys rebalanced.W/ 960610 ltr.
Paper図書
BROTHERS, M. H.//TEMPLE, W. J.NORTHEAST NUCLEAR ENERGY CO.1996/06/10.
Other Libraries in Japan
  • Author HeadingBROTHERS, M. H.//TEMPLE, W. J.
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