U.S. Nuclear Regulatory Commission Operations Center Event Reports For 06/03/94 - 06/06/94 ** EVENT NUMBERS ** 27272 27341 27343 27344 27345 27346 27347 27348 27349 27350 27351 27352 27353 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27272 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DIABLO CANYON REGION: 4 |NOTIFICATION DATE: 05/19/94 | |UNIT: [1] [2] [ ] STATE: CA |NOTIFICATION TIME: 05:27 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 05/19/94 | +------------------------------------------------+EVENT TIME: 02:07[PDT]| |NRC NOTIFIED BY: BOB ARROYO |LAST UPDATE DATE: 06/03/94 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |PHIL HARRELL RDO | |DSAF 73.71(b)(1) SECURITY DEGRADATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE IS INVESTIGATING THE ALLEGATION THAT A SECURITY OFFICER WAS | | ASLEEP AT HIS POST ON 4/28/94. THERE IS NO EVIDENCE OF UNAUTHORIZED ENTRY | | AT THE SITE. THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | | | | *** UPDATE DATE/TIME:06/03/94**FROM LICENSEE:HUBBLE BY:McGINTY*** | | THE LICENSEE IS RETRACTING THIS EVENT BASED ON THE INABILITY TO OBTAIN AN | | INDEPENDENT VERIFICATION THAT THE GUARD WAS ACTUALLY SLEEPING. THE | | LICENSEE HAS INFORMED BOTH THE REGION (DENNIS SCHAEFER) AND THE RESIDENT | | INSPECTOR. HOO NOTIFIED THE R4DO (STETKA). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27341 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: LASALLE REGION: 3 |NOTIFICATION DATE: 06/03/94 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 05:45 [ET]| |RX TYPE: [1] GE-5,[2] GE-5 |EVENT DATE: 06/03/94 | +------------------------------------------------+EVENT TIME: 02:20[CDT]| |NRC NOTIFIED BY: HEARY |LAST UPDATE DATE: 06/03/94 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BRUCE JORGENSEN RDO | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LOSS OF SHUTDOWN COOLING FOR APPROXIMATELY 4 MINUTES WHILE SHUTDOWN COOLING | | LOOPS WERE BEING SWAPPED. | | | | THE FOLLOWING IS A TEXT OF A FACSIMILE FROM THE LICENSEE: | | | | "WHILE SWAPPING SHUTDOWN COOLING LOOPS SHUTDOWN COOLING ISOLATED AS A | | RESULT OF A HIGH SUCTION FLOW ISOLATION. OUR PROCEDURES IDENTIFY THAT | | THESE ISOLATIONS CAN OCCUR WHEN STARTING, SECURING OR ADJUSTING SHUTDOWN | | COOLING FLOW RATES. THE SYSTEM WAS CHECKED FOR LEAKS OR BREAKS AND NONE | | WERE FOUND. THE ONCOMING SHUTDOWN COOLING LOOP WAS THEN RESTARTED. AN | | ALTERNATE METHOD OF FORCED CIRCULATION WAS MAINTAINED WHILE BOTH LOOPS OF | | SHUTDOWN COOLING WERE SECURED." END OF TEXT. | | | | THE LICENSEE WAS SWAPPING FROM SHUTDOWN COOLING LOOP "A" TO SHUTDOWN | | COOLING LOOP "B" AT THE TIME OF THE ISOLATION. REACTOR COOLANT TEMPERATURE | | DECREASED 1 DEGREE F DURING THE 4 MINUTES THAT A SHUTDOWN COOLING LOOP WAS | | NOT RUNNING. THE ALTERNATE MEANS OF FORCED CIRCULATION WAS THE REACTOR | | WATER CLEANUP SYSTEM. | | | | THE LICENSEE HAS INFORMED THE RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27343 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PILGRIM REGION: 1 |NOTIFICATION DATE: 06/03/94 | |UNIT: [1] [ ] [ ] STATE: MA |NOTIFICATION TIME: 13:16 [ET]| |RX TYPE: [1] GE-3 |EVENT DATE: 06/03/94 | +------------------------------------------------+EVENT TIME: 12:38[EDT]| |NRC NOTIFIED BY: FRED DICRISTROFARO |LAST UPDATE DATE: 06/03/94 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN WHITE RDO | |AIND 50.72(b)(2)(iii)(D) ACCIDENT MITIGATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | HPCI DECLARED INOPERABLE SO SURVEILLANCE TEST PROCEDURE FOR TORUS LEVEL | | TRANSMITTER CAN BE PERFORMED. | | | | INSTRUMENT RACK ISOLATION VALVE WHICH IS NORMALLY ISOLATED SO A CALIBRATION | | CHECK OF THEIR TORUS LEVEL TRANSMITTER COULD BE PERFORMED COULD NOT BE USED | | BECAUSE IT LEAKS BY. LICENSEE HAD TO ISOLATE THE NEXT INSTRUMENT RACK | | ISOLATION VALVE SO THE TORUS LEVEL TRANSMITTER CALIBRATION COULD BE | | PERFORMED. SHUTTING THIS VALVE ISOLATED LEVEL CHANGE OVER FOR HPCI FROM | | TORUS TO CST (THEREFORE LICENSEE DECLARED HPCI INOPERABLE). ALL OTHER ECCS | | SYSTEMS ARE FULLY OPERABLE. CALIBRATION CHECK OF THE TORUS LEVEL | | TRANSMITTER AND THEN DECLARING HPCI OPERABLE WILL TAKE ABOUT TWO HOURS. | | | | RESIDENT INSPECTOR WILL BE INFORMED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27344 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BRUNSWICK REGION: 2 |NOTIFICATION DATE: 06/03/94 | |UNIT: [1] [2] [ ] STATE: NC |NOTIFICATION TIME: 13:45 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 06/03/94 | +------------------------------------------------+EVENT TIME: 10:02[EDT]| |NRC NOTIFIED BY: SCHALL |LAST UPDATE DATE: 06/03/94 | |HQ OPS OFFICER: TIM McGINTY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN POTTER RDO | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | 2 | N N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | ESF ACTUATIONS IN RESPONSE TO A LOSS OF POWER TO MAIN STACK RADIATION | | MONITORS DURING REPAIR ACTIVITIES. | | | | WHILE PERFORMING REPAIR ACTIVITIES ON THE MAIN STACK RADIATION MONITOR AN | | INVALID ACTUATION SIGNAL OCCURRED WHEN ELECTRICAL POWER WAS LOST TO THE | | EQUIPMENT. THE FOLLOWING ACTUATIONS OCCURRED: | | | | -UNIT 1: GROUP 6 ISOLATION (CONTAINMENT ATMOSPHERE CONTROL SYSTEM), | | STANDBY GAS TREATMENT INITIATION (SBGT) AND A SECONDARY CONTAINMENT | | ISOLATION. | | | | -UNIT 2: SECONDARY CONTAINMENT ISOLATION. | | | | UNIT 2 IS CURRENTLY DEFUELED IN A REFUELING OUTAGE. THE SBGT SYSTEM WAS | | REMOVED FROM SERVICE AND THE GROUP 6 ISOLATION VALVES WERE PREVIOUSLY | | CLOSED. | | | | ALL SYSTEMS FUNCTIONED AS REQUIRED. THE ACTUATIONS WERE VERIFIED TO BE | | INVALID AND THE AFFECTED SYSTEMS WERE REALIGNED AS REQUIRED TO SUPPORT | | PLANT CONDITIONS. THE EVENT WILL BE INVESTIGATED IN ACCORDANCE WITH THE | | PLANT'S CORRECTIVE ACTION PROGRAM. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27345 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: WOLF CREEK REGION: 4 |NOTIFICATION DATE: 06/03/94 | |UNIT: [1] [ ] [ ] STATE: KS |NOTIFICATION TIME: 19:08 [ET]| |RX TYPE: [1] W-4-LP |EVENT DATE: 06/03/94 | +------------------------------------------------+EVENT TIME: 17:25[CDT]| |NRC NOTIFIED BY: PETER MARTIN |LAST UPDATE DATE: 06/03/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |TOM STETKA RDO | |AENS 50.72(b)(1)(v) ENS INOPERABLE | | |AARC 50.72(b)(1)(v) OTHER ASMT/COMM INOP | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | ALL PHONE LINES, EXCEPT ONE, TO AND FROM THE SITE HAVE BEEN CUT. THIS | | INCLUDES COMMERCIAL PHONE SERVICE, FTS-2000, AS WELL AS THE PHONE LINE TO | | THE LOAD DISPATCHER. THE LICENSEE HAS SEVERAL CELLULAR PHONES AVAILABLE AS | | WELL AS RADIOS TO CALL OFF SITE IF NEEDED. THE LICENSEE PROVIDED THE | | OPERATIONS CENTER WITH THE NUMBER OF THE PHONE LINE THAT IS OPERABLE. | | | | THE PHONE LINES WERE ACCIDENTALLY CUT DURING MAINTENANCE ON THE LICENSEE'S | | PHONE SYSTEM. THE LICENSEE IS WORKING TO RECONNECT THE PHONE LINES AND | | ANTICIPATES RESTORATION OF PHONE SERVICE WITHIN THE NEXT HOUR. | | | | THE LICENSEE WILL NOTIFY THE NRC RESIDENT INSPECTOR. | | | | **** UPDATE AT 2004 EST ON 06/03/94 BY WALGREN TAKEN BY ANDREWS **** | | LICENSEE CALLED TO REPORT THAT FTS-2000 PHONE SERVICE WAS RESTORED. THIS | | WAS SUCCESSFULLY VERIFIED FROM THE OPERATIONS CENTER. THE LICENSEE WILL | | NOTIFY THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27346 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BEAVER VALLEY REGION: 1 |NOTIFICATION DATE: 06/03/94 | |UNIT: [ ] [2] [ ] STATE: PA |NOTIFICATION TIME: 20:26 [ET]| |RX TYPE: [1] W-3-LP,[2] W-3-LP |EVENT DATE: 06/03/94 | +------------------------------------------------+EVENT TIME: 19:30[EDT]| |NRC NOTIFIED BY: B. TUITE |LAST UPDATE DATE: 06/03/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN WHITE RDO | |ASHU 50.72(b)(1)(i)(A) PLANT S/D REQD BY TS | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 HOT STANDBY | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | CHECK VALVE FWE-100 IN THE AUXILIARY FEEDWATER LINE TO THE "B" STEAM | | GENERATOR IS LEAKING IN EXCESS OF 5 GALLONS PER MINUTE. THE CHECK VALVE IS | | A CONTAINMENT ISOLATION VALVE. TECHNICAL SPECIFICATION 3.6.3.1 ACTION D | | REQUIRES THE PLANT TO BE PLACED IN COLD SHUTDOWN IN 30 HOURS. THE CAUSE | | FOR THE LEAKAGE IS UNKNOWN AT THIS TIME. PLANT SHUTDOWN WAS COMMENCED AT | | 1930 EDT. | | | | THE LICENSEE DISCOVERED THIS AS A RESULT OF THE PRESSURE INCREASE IN THE | | AUXILIARY FEEDWATER LINE. THEY TRIED STARTING THE AUXILIARY FEEDWATER PUMP | | AND PUMPING THROUGH THE VALVE THEN SHUTTING OFF THE PUMP TO ATTEMPT TO | | RESEAT THE VALVE. THIS WAS NOT SUCCESSFUL, SO THE DECISION WAS MADE TO | | COOL DOWN AND DEPRESSURIZE TO FIX THE VALVE. | | | | THE LICENSEE DOES NOT WANT TO ISOLATE THIS LINE SINCE THEY WANT TO KEEP | | AUXILIARY FEEDWATER AVAILABLE TO THE STEAM GENERATOR. NORMAL FEEDWATER IS | | AVAILABLE. | | | | THE NRC RESIDENT INSPECTOR WILL BE NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27347 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BEAVER VALLEY REGION: 1 |NOTIFICATION DATE: 06/03/94 | |UNIT: [ ] [2] [ ] STATE: PA |NOTIFICATION TIME: 23:05 [ET]| |RX TYPE: [1] W-3-LP,[2] W-3-LP |EVENT DATE: 06/03/94 | +------------------------------------------------+EVENT TIME: 22:00[EDT]| |NRC NOTIFIED BY: B. TUITE |LAST UPDATE DATE: 06/03/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN WHITE RDO | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 HOT STANDBY | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | TECHNICAL SPECIFICATIONS REQUIRE TESTING OF THE RESIDUAL HEAT RELEASE CHECK | | VALVES DURING PLANT SHUTDOWN (SEE EVENT 27347). AS PART OF THIS TEST, THE | | RESIDUAL HEAT RELEASE VALVE IS MOMENTARILY OPENED TO RELEASE STEAM FROM THE | | STEAM GENERATOR UNTIL AT LEAST A 10 DEGREE F DECREASE IN COLD LEG | | TEMPERATURE IS OBSERVED. | | | | WHEN THE TEST WAS COMPLETED ON THE "C" STEAM GENERATOR, THE VALVE WAS | | CLOSED, CAUSING A LEVEL DECREASE IN THE STEAM GENERATOR (SHRINK) TO THE | | STEAM DRIVEN AUXILIARY FEEDWATER PUMP AUTOMATIC START SETPOINT. LEVEL WAS | | RESTORED AND THE PUMP WAS SECURED. | | | | THE LICENSEE HAS NOTIFIED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |OTHER NUCLEAR MATERIAL | |EVENT NUMBER: 27348 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: NUCOR STEEL |NOTIFICATION DATE: 06/04/94 | | CITY: CRAWFORDSVILLE REGION: 3 |NOTIFICATION TIME: 10:56 [ET]| | COUNTY: STATE: IN |EVENT DATE: 06/04/94 | |LICENSE#: AGREEMENT: N |EVENT TIME: 09:00[EDT]| | DOCKET: |LAST UPDATE DATE: 06/04/94 | | +-----------------------------+ | |PERSON ORGANIZATION| | |ROGER LANKSBURY RDO | | |MARGARET FEDERLINE EO | +------------------------------------------------+RICHARD BANGART SP | |NRC NOTIFIED BY: RON BARNETT |ROY CANIANO RIII | |HQ OPS OFFICER: WILLIAM HUFFMAN | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NINF INFORMATION ONLY | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | RADIOACTIVE LEVELS ABOVE BACKGROUND DISCOVERED IN WASTE SHIPMENT FROM A | | STEEL RECYCLING PLANT. | | | | NUCOR STEEL OF CRAWFORDSVILLE, INDIANA, REPORTED THAT THREE SEMI-TRAILERS | | FULL OF "FLUE" DUST SET OFF RADIATION DETECTORS AS THEY WERE EXITING THE | | FACILITY. NUCOR IS A STEEL RECYCLING PLANT WHICH CONVERTS SCRAP STEEL INTO | | SHEET METAL AND COILS. THE FLUE DUST COMES FROM THE EXHAUST DUCTS OF | | ELECTRIC ARC FURNACES USED TO MELT THE SCRAP METAL AT THE SITE. THE | | RADIATION LEVELS WERE BETWEEN 1.5 AND 4 MICRO REM PER HOUR USING A HAND | | HELD DETECTOR. | | | | BASED ON DISCUSSIONS WITH THE REGIONAL NRC PERSONNEL, THE COMPANY WILL HOLD | | THE SHIPMENT. THE NRC WILL HAVE THE SHIPMENT ASSAYED ON MONDAY TO DETERMINE | | THE ISOTOPE INVOLVED AND IF THERE IS ANY SIGNIFICANT CONCERN. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27349 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MONTICELLO REGION: 3 |NOTIFICATION DATE: 06/05/94 | |UNIT: [1] [ ] [ ] STATE: MN |NOTIFICATION TIME: 01:56 [ET]| |RX TYPE: [1] GE-3 |EVENT DATE: 06/04/94 | +------------------------------------------------+EVENT TIME: 23:13[CDT]| |NRC NOTIFIED BY: PAT DECKER |LAST UPDATE DATE: 06/05/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROGER LANKSBURY RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | A/R Y 100 POWER OPERATION | 0 HOT SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | REACTOR TRIP DUE TO LOW CONDENSER VACUUM. | | | | A REACTOR SCRAM OCCURRED FOLLOWING A TURBINE TRIP ON LOW CONDENSER VACUUM. | | ALL RODS FULLY INSERTED. THERE WERE NO COMPLICATIONS AND ALL SYSTEMS | | FUNCTIONED AS REQUIRED. REACTOR PRESSURE IS CURRENTLY STABLE AT 845 PSI. | | DECAY HEAT IS BEING DISCHARGED INTO THE CONDENSER AND MAKEUP WATER IS BEING | | SUPPLIED BY NORMAL FEED. NO SAFETY RELIEF VALVES LIFTED DURING THE | | TRANSIENT. | | | | LIGHTNING STORMS IN THE AREA APPARENTLY CAUSED AN ELECTRICAL DISTURBANCE | | WHICH TRIPPED OUT THE "A" OFFGAS RECOMBINER SYSTEM. THE LICENSEE WAS NOT | | ABLE TO GET THE "B" OFFGAS RECOMBINER OPERATIONAL OR RESTORE THE "A" SYSTEM | | BEFORE CONDENSER VACUUM DROPPED BELOW THE TURBINE TRIP SETPOINT. THE | | LICENSEE HAD DOWN POWERED TO APPROXIMATELY 60% OF FULL POWER WHEN THE SCRAM | | TOOK PLACE. NO ELECTRICAL BUSES WERE LOST DURING THE EVENT TRANSIENT. | | INVESTIGATION INTO THE CAUSE OF THE LOST OFFGAS RECOMBINER SYSTEM IS STILL | | UNDER INVESTIGATION. | | | | DURING THE TRANSIENT, REACTOR VESSEL WATER LEVEL SHRANK FROM A NORMAL VALUE | | OF +35 INCHES TO A MINIMUM LEVEL OF +8 INCHES CAUSING GROUP II (CONTAINMENT | | AND REACTOR BUILDING VENTILATION) AND GROUP III (RWCU) ISOLATIONS. THE | | STANDBY GAS TREATMENT SYSTEM ALSO ACTUATED AS EXPECTED. | | | | RESTART IS EXPECTED SOMETIME LATER TODAY. THE NRC RESIDENT INSPECTOR HAS | | BEEN INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27350 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: LASALLE REGION: 3 |NOTIFICATION DATE: 06/05/94 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 11:32 [ET]| |RX TYPE: [1] GE-5,[2] GE-5 |EVENT DATE: 06/05/94 | +------------------------------------------------+EVENT TIME: 08:36[CDT]| |NRC NOTIFIED BY: R. TERMINI |LAST UPDATE DATE: 06/05/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROGER LANKSBURY RDO | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | SPURIOUS RHR ISOLATION. | | | | THE FOLLOWING IS THE TEXT OF A FACSIMILE RECEIVED FROM THE LICENSEE | | REPORTING THIS EVENT: | | | | "FOLLOWING STARTUP OF 1A RHR PUMP, RECEIVED A DIVISION 1 HIGH SUCTION FLOW | | ISOLATION SIGNAL. DIV 1 VALVES CLOSED AND BOTH RUNNING RHR PUMPS TRIPPED AS | | EXPECTED. THE AREA WAS CHECKED FOR LEAKS AND THE ISOLATION WAS DETERMINED | | TO BE SPURIOUS. ISOLATIONS WERE BYPASSED IN ACCORDANCE WITH LOP-RH-07 AND | | THE SYSTEM UNISOLATED. THE RHR PUMPS WERE RE-STARTED AND THE ISOLATION | | UN-BYPASSED. | | | | NO SIGNIFICANT PLANT HEATUP OCCURRED WHILE THE RHR PUMPS WERE OFFLINE. "A" | | RHR PUMP WAS STARTED AT 0931 CDT, "B" RHR PUMP AT 1025 CDT." | | | | THE LICENSEE HAS BEEN SHUTDOWN SINCE FEBRUARY AND IS AT THE END OF A | | REFUELING OUTAGE AND, CONSEQUENTLY, HAS VERY LITTLE DECAY HEAT LOAD. | | TEMPERATURE INCREASE WAS LESS THAN 1 DEGREE. ALL SYSTEMS FUNCTIONED AS | | REQUIRED. ADDITIONAL INVESTIGATION INTO THE CAUSE OF THE ISOLATION SIGNAL | | WILL BE CONDUCTED. | | | | THE RESIDENT INSPECTOR HAS BEEN INFORMED. SEE RELATED EVENT #27341. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27351 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: LASALLE REGION: 3 |NOTIFICATION DATE: 06/05/94 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 12:16 [ET]| |RX TYPE: [1] GE-5,[2] GE-5 |EVENT DATE: 06/05/94 | +------------------------------------------------+EVENT TIME: 10:39[CDT]| |NRC NOTIFIED BY: RAY TERMINI |LAST UPDATE DATE: 06/05/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROGER LANKSBURY RDO | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | SHORTLY AFTER REMOVING JUMPERS BYPASSING THE SHUTDOWN COOLING HIGH FLOW | | ISOLATION LOGIC, THE LICENSEE RECEIVED ANOTHER ISOLATION SIGNAL (SEE EVENT | | 27350) ON HIGH SUCTION LINE FLOW. VALVES CLOSED AND THE RESIDUAL HEAT | | REMOVAL PUMPS TRIPPED AS EXPECTED. | | | | THE LICENSEE BYPASSED THE ISOLATION AND RESTARTED THE "B" RESIDUAL HEAT | | REMOVAL PUMP AT 1053 CDT. THE SECOND RESIDUAL HEAT REMOVAL PUMP WAS NOT | | RESTARTED. JUMPERS WERE THEN REMOVED, RESTORING THE ISOLATION LOGIC. THE | | LICENSEE IS CHECKING THE DP SWITCHES TO DETERMINE THE CAUSE OF THE | | ISOLATION WITH FLOW MUCH LOWER THAN THE SETPOINT. | | | | NO PLANT HEATUP OCCURRED WHILE THE RESIDUAL HEAT REMOVAL PUMPS WERE OFF. | | | | NRC RESIDENT HAS BEEN NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27352 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: QUAD CITIES REGION: 3 |NOTIFICATION DATE: 06/05/94 | |UNIT: [1] [2] [ ] STATE: IL |NOTIFICATION TIME: 20:14 [ET]| |RX TYPE: [1] GE-3,[2] GE-3 |EVENT DATE: 06/05/94 | +------------------------------------------------+EVENT TIME: 16:40[CDT]| |NRC NOTIFIED BY: MARK JENSEN |LAST UPDATE DATE: 06/05/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROGER LANKSBURY RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | 2 | N Y 97 POWER OPERATION | 97 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE ESTIMATES THEY HAVE RELEASED 18 GALLONS OF FUEL OIL TO THE | | GROUND DUE TO A BROKEN UNDERGROUND DRAIN LINE. THE SPILL IS CONTAINED ON | | COMPANY PROPERTY AND DID NOT INVOLVE A RELEASE TO THE MISSISSIPPI RIVER. | | THIS DRAIN LINE HAS BEEN ISOLATED AND THE LICENSEE IS TAKING STEPS TO HAVE | | THE OIL CLEANED UP AND TO HAVE THE LINE REPAIRED. | | | | THE LICENSEE NOTIFIED THE NATIONAL RESPONSE CENTER AND THE ILLINOIS | | EMERGENCY MANAGEMENT AGENCY. THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED | | BY THE LICENSEE OF THIS NOTIFICATION. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27353 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BYRON REGION: 3 |NOTIFICATION DATE: 06/05/94 | |UNIT: [1] [2] [ ] STATE: IL |NOTIFICATION TIME: 20:54 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 06/05/94 | +------------------------------------------------+EVENT TIME: 17:39[CDT]| |NRC NOTIFIED BY: PAUL INFINGER |LAST UPDATE DATE: 06/05/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROGER LANKSBURY RDO | |AARC 50.72(b)(1)(v) OTHER ASMT/COMM INOP | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | AT 1739 CDT, ON 06/05/94, THE LICENSEE DISCOVERED THAT THEY COULD NOT | | ACCESS THE PRIME COMPUTER POINT HISTORY. LOSS OF ACCESS TO THE POINT | | HISTORY IS CONSIDERED TO BE A LOSS OF ASSESSMENT CAPABILITY. | | | | WORK IS IN PROGRESS TO RESTORE THE PRIME COMPUTER TO OPERABLE STATUS. | | HOWEVER, THE COMPUTER WAS NOT RESTORED WITHIN THE 2 HOURS GIVEN IN | | COMMITMENT DOCUMENTS. THE LICENSEE SUSPECTS THE PROBLEM IS RELATED TO THE | | HARD DISK. THEY DID NOT HAVE AN ESTIMATED TIME REQUIRED TO COMPLETE THE | | REPAIRS. THIS PROBLEM DOES NOT AFFECT THE ANNUNCIATOR SYSTEM USED BY THE | | OPERATORS. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN NOTIFIED. | +------------------------------------------------------------------------------+