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LER 99-004-00:on 990412,discovered that containment recirculation fan moisture separator vanes were incorrectly installed,per 10CFR21.Caused by improper assembly by mfg. Subject vanes were dismantled & correctly re-installed.

LER 99-004-00:on 990412,discovered that containment recirculation fan moisture separator vanes were incorrectly installed,per 10CFR21.Caused by improper assembly by mfg. Subject vanes were dismantled & correctly re-installed.
Paper図書
ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1999/05/12.
Other Libraries in Japan
  • Author HeadingST, MARTIN. J. T.

LER 98-003-02:on 980904,actuations of CR emergency air treatment sys was noted due to invalid causes.Caused by various degraded components in CR RM sys.CREATS actuation signal was reset & normal ventilation was restored.

LER 98-003-02:on 980904,actuations of CR emergency air treatment sys was noted due to invalid causes.Caused by various degraded components in CR RM sys.CREATS actuation signal was reset & normal ventilation was restored.
Paper図書
ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1999/07/22.
Other Libraries in Japan
  • Author HeadingST, MARTIN. J. T.

LER 98-001-00:on 980209,discovered that Boraflex degradation in SPF was greater than was assumed.Caused by dissolution of boron on Boraflex matrix,per 10CFR50.21.Removed spent fuel assemblies from selected degraded storage rack cells.

LER 98-001-00:on 980209,discovered that Boraflex degradation in SPF was greater than was assumed.Caused by dissolution of boron on Boraflex matrix,per 10CFR50.21.Removed spent fuel assemblies from selected degraded storage rack cells.
Paper図書
ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1998/03/11.
Other Libraries in Japan
  • Author HeadingST, MARTIN. J. T.

LER 96-009-02:on 960723,determined that leak rate outside containment was greater than program limit.Caused by weld defect.Isolated leak & cut out & replaced leaking pipe.

LER 96-009-02:on 960723,determined that leak rate outside containment was greater than program limit.Caused by weld defect.Isolated leak & cut out & replaced leaking pipe.
Paper図書
ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1997/08/11.
Other Libraries in Japan
  • Author HeadingST, MARTIN. J. T.

LER 97-007-01:on 971117,reactor engineer recognized that neutron flux low range trip circuitry for channel was not in tripped condition as required.Caused by technical inadequacies.Channel defeat will be identified.

LER 97-007-01:on 971117,reactor engineer recognized that neutron flux low range trip circuitry for channel was not in tripped condition as required.Caused by technical inadequacies.Channel defeat will be identified.
Paper図書
ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1998/02/06.
Other Libraries in Japan
  • Author HeadingST, MARTIN. J. T.

LER 96-003-01:on 960308,identified that both pressurizer PORVs inoperable concurrently due to disconnection of flex hose to both PORV actuators to install air-sets for benchset & limit switch activities.HPES completed.

LER 96-003-01:on 960308,identified that both pressurizer PORVs inoperable concurrently due to disconnection of flex hose to both PORV actuators to install air-sets for benchset & limit switch activities.HPES completed.
Paper図書
ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1996/05/17.
Other Libraries in Japan
  • Author HeadingST, MARTIN. J. T.

LER 95-006-00:on 950630,34.5 KV offsite power circuit 751 was lost due to offsite lightning strike & resulted in automatic start of "A" EDG.Performed appropriate actions of abnormal procedure AP-ELEC.1 to stabilize plant.

LER 95-006-00:on 950630,34.5 KV offsite power circuit 751 was lost due to offsite lightning strike & resulted in automatic start of "A" EDG.Performed appropriate actions of abnormal procedure AP-ELEC.1 to stabilize plant.
Paper図書
ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1995/07/31.
Other Libraries in Japan
  • Author HeadingST, MARTIN. J. T.

LER 95-001-00:on 950203,pressurizer safety valves lift settings found above TS tolerance during post-svc test,due to setpoint shifts that resulted in independent trains being considered inoperable.

LER 95-001-00:on 950203,pressurizer safety valves lift settings found above TS tolerance during post-svc test,due to setpoint shifts that resulted in independent trains being considered inoperable.
Paper図書
ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1995/03/06.
Other Libraries in Japan
  • Author HeadingST, MARTIN. J. T.

LER 99-010-00:on 990615,ventilation isolation of auxiliary bldg occurred when auxiliary bldg gas radiation monitor R-14 reached high alarm setpoint.CR operators rest auxiliary bldg ventilation isolation signal.With 990715 ltr.

LER 99-010-00:on 990615,ventilation isolation of auxiliary bldg occurred when auxiliary bldg gas radiation monitor R-14 reached high alarm setpoint.CR operators rest auxiliary bldg ventilation isolation signal.With 990715 ltr.
Paper図書
MECREDY, R. C.//ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1999/07/15.
Other Libraries in Japan
  • Author HeadingMECREDY, R. C.//ST, MARTIN. J. T.

LER 99-001-01:on 990222,deficiencies in NSSS vendor steam- line brake mass & energy release analysis results in plant being outside design bases occurred.Caused by deficiencies in W.Temporary administrative replaced.With 990621 ltr.

LER 99-001-01:on 990222,deficiencies in NSSS vendor steam- line brake mass & energy release analysis results in plant being outside design bases occurred.Caused by deficiencies in W.Temporary administrative replaced.With 990621 ltr.
Paper図書
MECREDY, R. C.//ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1999/06/21.
Other Libraries in Japan
  • Author HeadingMECREDY, R. C.//ST, MARTIN. J. T.

LER 99-009-00:on 990503,instrumentation declared inoperable in multiple channels resulted in condition prohibited by TS. Caused by unanticipated high frequency AC voltage ripple. Entered TS LCO 3.0.3.With 990602 ltr.

LER 99-009-00:on 990503,instrumentation declared inoperable in multiple channels resulted in condition prohibited by TS. Caused by unanticipated high frequency AC voltage ripple. Entered TS LCO 3.0.3.With 990602 ltr.
Paper図書
MECREDY, R. C.//ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1999/06/02.
Other Libraries in Japan
  • Author HeadingMECREDY, R. C.//ST, MARTIN. J. T.

LER 99-008-00:on 990427,overtemperature delta T reactor trip occurred due to faulted bistable during calibr of redundant channel.Plant was stabilized in mode 3 & faulted bistable was subsequently replaced.With 990527 ltr.

LER 99-008-00:on 990427,overtemperature delta T reactor trip occurred due to faulted bistable during calibr of redundant channel.Plant was stabilized in mode 3 & faulted bistable was subsequently replaced.With 990527 ltr.
Paper図書
MECREDY, R. C.//ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1999/05/27.
Other Libraries in Japan
  • Author HeadingMECREDY, R. C.//ST, MARTIN. J. T.

LER 99-006-00:on 990421,start of turbine-driven auxiliary feedwater pump was noted.Caused by MOV being left in open position.Closed manual isolation valve to secure steam to pump.With 990521 ltr.

LER 99-006-00:on 990421,start of turbine-driven auxiliary feedwater pump was noted.Caused by MOV being left in open position.Closed manual isolation valve to secure steam to pump.With 990521 ltr.
Paper図書
MECREDY, R. C.//ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1999/05/21.
Other Libraries in Japan
  • Author HeadingMECREDY, R. C.//ST, MARTIN. J. T.

LER 99-005-00:on 990413,undervoltage signal of safeguards bus during testing resulted in automatic start of "B" EDG. Caused by personnel error.Blown fuse was replaced & offsite power was restored to safeguards bus 17.With 990513 ltr.

LER 99-005-00:on 990413,undervoltage signal of safeguards bus during testing resulted in automatic start of "B" EDG. Caused by personnel error.Blown fuse was replaced & offsite power was restored to safeguards bus 17.With 990513 ltr.
Paper図書
MECREDY, R. C.//ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1999/05/13.
Other Libraries in Japan
  • Author HeadingMECREDY, R. C.//ST, MARTIN. J. T.

LER 99-003-00:on 990301,two main steam non-return check valves were declared inoperable due to exceedance of acceptance criteria.Caused by changes in methodology & matls.Packing gland torque will be adjusted.With 990331 ltr.

LER 99-003-00:on 990301,two main steam non-return check valves were declared inoperable due to exceedance of acceptance criteria.Caused by changes in methodology & matls.Packing gland torque will be adjusted.With 990331 ltr.
Paper図書
MECREDY, R. C.//ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1999/03/31.
Other Libraries in Japan
  • Author HeadingMECREDY, R. C.//ST, MARTIN. J. T.

LER 99-002-00:on 990227,discovered that surveillance had not been performed at frequency,per TS.Caused by personnel error.Procedure O-6.13 will be evaluated for enhancement documentation of completion of ITS SRs.With 990329 ltr.

LER 99-002-00:on 990227,discovered that surveillance had not been performed at frequency,per TS.Caused by personnel error.Procedure O-6.13 will be evaluated for enhancement documentation of completion of ITS SRs.With 990329 ltr.
Paper図書
MECREDY, R. C.//ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1999/03/29.
Other Libraries in Japan
  • Author HeadingMECREDY, R. C.//ST, MARTIN. J. T.

LER 98-003-00:on 980904,actuations of CR emergency air treatment sys occurred.Caused by radon build-up during temp inversion.Air samples were taken & determined that source of radiation was naturally occurring radon.With 981005 ltr.

LER 98-003-00:on 980904,actuations of CR emergency air treatment sys occurred.Caused by radon build-up during temp inversion.Air samples were taken & determined that source of radiation was naturally occurring radon.With 981005 ltr.
Paper図書
MECREDY, R. C.//ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1998/10/05.
Other Libraries in Japan
  • Author HeadingMECREDY, R. C.//ST, MARTIN. J. T.

LER 98-002-00:on 971019,CR emergency air treatment sys actuating function was not operable.Caused by mispositioned switch.Revised procedure CPI-MON-R37.W/980714 ltr.

LER 98-002-00:on 971019,CR emergency air treatment sys actuating function was not operable.Caused by mispositioned switch.Revised procedure CPI-MON-R37.W/980714 ltr.
Paper図書
MECREDY, R. C.//ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1998/07/14.
Other Libraries in Japan
  • Author HeadingMECREDY, R. C.//ST, MARTIN. J. T.

LER 97-007-00:on 971117,NF low range trip circuitry for channel N-44 was not placed in tripped condition.Caused by technical inadequacies in procedures.Implemented EWR 4862 to resolve design deficiency.W/971217 ltr.

LER 97-007-00:on 971117,NF low range trip circuitry for channel N-44 was not placed in tripped condition.Caused by technical inadequacies in procedures.Implemented EWR 4862 to resolve design deficiency.W/971217 ltr.
Paper図書
MECREDY, R. C.//ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1997/12/17.
Other Libraries in Japan
  • Author HeadingMECREDY, R. C.//ST, MARTIN. J. T.

LER 97-006-00:on 971103,NIS audible count rate function was inoperable.Caused by misinterpretation of event sequence due to not verifying boron concentration.B verification occurred every 12 h per ITS LCO action 3.9.2.C.3.W/971203 ltr.

LER 97-006-00:on 971103,NIS audible count rate function was inoperable.Caused by misinterpretation of event sequence due to not verifying boron concentration.B verification occurred every 12 h per ITS LCO action 3.9.2.C.3.W/971203 ltr.
Paper図書
MECREDY, R. C.//ST, MARTIN. J. T.ROCHESTER GAS & ELECTRIC CORP.1997/12/03.
Other Libraries in Japan
  • Author HeadingMECREDY, R. C.//ST, MARTIN. J. T.
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