U.S. Nuclear Regulatory Commission Operations Center Event Reports For 03/13/95 - 03/14/95 ** EVENT NUMBERS ** 28518 28519 28520 28521 28522 28523 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28518 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: WATERFORD REGION: 4 |NOTIFICATION DATE: 03/13/95 | |UNIT: [3] [ ] [ ] STATE: LA |NOTIFICATION TIME: 01:55 [ET]| |RX TYPE: [3] CE |EVENT DATE: 03/12/95 | +------------------------------------------------+EVENT TIME: 23:55[CST]| |NRC NOTIFIED BY: CASSIDY |LAST UPDATE DATE: 03/13/95 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |CHRIS VANDENBURGH RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |MARTIN VIRGILIO EO | | |STINEDURF FEMA | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 3 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNUSUAL EVENT DECLARED BASED ON A TOXIC GAS RELEASE | | | | THE LICENSEE DECLARED AN UNUSUAL EVENT AFTER AN EXPLOSION AND TOXIC GAS | | RELEASE OCCURRED AT THE NEIGHBORING UNION CARBIDE PLANT. WATERFORD | | RECEIVED INFORMATION FROM THE ST. CHARLES PARISH EMERGENCY OPERATIONS | | CENTER (EOC) INDICATING THAT A SMALL RELEASE OF VINYL CYCLO HEXENE MONOXIDE | | (VCM) HAD OCCURRED AND THAT THE RELEASE HAD BEEN TERMINATED. | | | | THE LICENSEE DECLARED AN UNUSUAL EVENT AS A PRECAUTIONARY MEASURE. THE | | CONTROL ROOM VENTILATION SYSTEM WAS PLACED IN THE EMERGENCY MODE. NO ILL | | HEALTH EFFECTS HAVE BEEN OBSERVED ON SITE. THE UNION CARBIDE PLANT IS | | ABOUT 1 MILE FROM WATERFORD 3. AT THE TIME OF THE RELEASE, THE WIND SPEED | | WAS 15 MPH FROM THE UNION CARBIDE PLANT TOWARDS WATERFORD 3. WATERFORD's | | CONTINGENCY PLANS STATE THAT VCM IS A "SMALL" HAZARD. | | | | THE LICENSEE INTENDS TO TERMINATE THE UE WHEN THE THREAT OF FURTHER | | RELEASES HAS SUBSIDED. THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE AT 0330 3/13/95 BY WEMETT TAKEN BY WEAVER * * * | | THE UNUSUAL EVENT WAS TERMINATED AT 0218 CST WHEN THE EVENT AT THE UNION | | CARBIDE PLANT WAS DETERMINED TO BE NO LONGER OF CONCERN. THE HOO NOTIFIED | | THE RDO (VANDENBURGH); EO (VIRGILIO); FEMA (EARL). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28519 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: POINT BEACH REGION: 3 |NOTIFICATION DATE: 03/13/95 | |UNIT: [1] [ ] [ ] STATE: WI |NOTIFICATION TIME: 15:26 [ET]| |RX TYPE: [1] W-2-LP,[2] W-2-LP |EVENT DATE: 03/13/95 | +------------------------------------------------+EVENT TIME: 13:50[CST]| |NRC NOTIFIED BY: FROMM |LAST UPDATE DATE: 03/13/95 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ 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 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE PLANT HAD AM AUTO START AND LOADING OF STANDBY EMERGENCY DIESEL | | GENERATOR. | | | | THIS OCCURRED WHEN SAFEGUARDS BUS "1A05" FEEDER BREAKER TRIPPED OPEN DUE TO | | MODIFICATION WORK ASSOCIATED WITH THE INSTALLATION OF A NEW DIESEL | | GENERATOR DURING THEIR REFUELING OUTAGE. PREPARATORY WIRE LABELING WAS IN | | PROGRESS AT THE TIME, WHEN A WIRE SEPARATED FROM A CRIMP-ON LUG WHICH | | RESULTED IN A LOSS IN DC POWER TO THE UNDER VOLTAGE RELAYS. THE LOSS OF DC | | POWER CAUSED THE BUS FEEDER BREAKER TO BE OPEN. THE S/B DIESEL GENERATOR | | STARTED AND RE-ENERGIZED THE BUS. THEY ARE CURRENTLY ATTEMPTING TO RE-LUG | | AND RE-LAND THE WIRE TO ALLOW FOR NORMAL RE-ALIGNMENT OF THE BUS. ALL | | EQUIPMENT RESPONDED AS EXPECTED AND NO PERTURBATION TO UNIT 1 DECAY HEAT | | REMOVAL OCCURRED. THE RI WAS NOTIFIED | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28520 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MAINE YANKEE REGION: 1 |NOTIFICATION DATE: 03/13/95 | |UNIT: [1] [ ] [ ] STATE: ME |NOTIFICATION TIME: 17:36 [ET]| |RX TYPE: [1] CE |EVENT DATE: 03/13/95 | +------------------------------------------------+EVENT TIME: 15:15[EST]| |NRC NOTIFIED BY: GRIMARD |LAST UPDATE DATE: 03/13/95 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MICHAEL MODES RDO | |ADAS 50.72(b)(2)(i) DEG/UNANALYZED COND | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE HAS DETERMINED THAT THE NUMBER OF DEFECTIVE TUBES IN #3 S/G IS | | GREATER THAN TS 4.10 LIMITS. | | | | THE RESULTS OF EDDY CURRENT TESTING OF #3 S/G TUBES WERE CLASSIFIED AS | | CATEGORY C-3 BECAUSE GREATER THAN 1%(55 OUT OF 5461 TUBES) OF THE SAMPLE | | WERE DEFECTIVE. THE DEFECTIVE TUBES CONTAINED IMPERFECTIONS WHICH EXCEEDED | | THE PLUGGING LIMIT DEPTH OF 40% OF NORMAL WALL THICKNESS. THEY WILL INSPECT | | 100% OF THE TUBES IN ALL THREE STEAM GENERATORS. AS OF THIS TIME 52% OF THE | | #3 S/G TUBES HAVE BEEN INSPECTED. THE REACTOR IS CURRENTLY DEFUELED. | | | | THE RI WAS INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28521 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: ARKANSAS NUCLEAR REGION: 4 |NOTIFICATION DATE: 03/14/95 | |UNIT: [1] [ ] [ ] STATE: AR |NOTIFICATION TIME: 02:35 [ET]| |RX TYPE: [1] B&W-L-LP,[2] CE |EVENT DATE: 03/14/95 | +------------------------------------------------+EVENT TIME: 01:15[CST]| |NRC NOTIFIED BY: VANBUSKIRK |LAST UPDATE DATE: 03/14/95 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BLAINE MURRAY RDO | |ADAS 50.72(b)(2)(i) DEG/UNANALYZED COND | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | REACTOR BUILDING COOLING UNITS SEISMIC ANCHORS NOT INSTALLED | | | | THE AS BUILT REACTOR BUILDING COOLING UNITS SEISMIC ANCHORS WERE FOUND TO | | BE NOT INSTALLED. THE DISCOVERY WAS MADE DURING A SYSTEM WALKDOWN. THERE | | ARE FOUR COOLING UNITS AND EACH SHOULD HAVE HAD MULTIPLE SEISMIC ANCHORS. | | NO SEISMIC ANCHORS WERE FOUND ON ANY OF THE COOLING UNITS. THE COOLING | | UNITS ARE NOT REQUIRED TO BE OPERABLE UNTIL PLANT TEMPERATURE IS RAISED | | ABOVE 200 DEGREES F. | | | | THE LICENSEE IS STILL ANALYZING THE PROBLEM AND DEVELOPING A PLAN OF | | ACTION. THE CURRENT REFUELING OUTAGE IS SCHEDULED TO END MARCH 25TH. THE | | LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28522 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CLINTON REGION: 3 |NOTIFICATION DATE: 03/14/95 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 04:25 [ET]| |RX TYPE: [1] GE-6 |EVENT DATE: 03/14/95 | +------------------------------------------------+EVENT TIME: 02:00[CST]| |NRC NOTIFIED BY: SCHOTTEL |LAST UPDATE DATE: 03/14/95 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BRUCE JORGENSEN RDO | |ADAS 50.72(b)(2)(i) DEG/UNANALYZED COND | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | TWO VALVES IN THE FEEDWATER (FW) SYSTEM FAILED A LEAK RATE TEST | | | | THE REACTOR FW HEADER CHECK VALVE (1-B 21 F010A) HAD SEAT LEAKAGE OF 30,000 | | SCCM. THE FW CONTAINMENT ISOLATION AIR OPERATED CHECK VALVE (1-B 21 F032A) | | HAD GROSS LEAKAGE (NOT QUANTIFIABLE). THE ISI LIMIT FOR EACH VALVE IS | | 20,000 SCCM. MINIMUM PATH LEAKAGE FOR THE PENETRATION IS 30,000 SCCM WHICH | | EXCEEDS ALLOWABLE SECONDARY CONTAINMENT BYPASS LEAKAGE OF .08 La (APPROX. | | 29,000 SSCM). | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28523 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: VOGTLE REGION: 2 |NOTIFICATION DATE: 03/14/95 | |UNIT: [ ] [2] [ ] STATE: GA |NOTIFICATION TIME: 05:36 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 03/14/95 | +------------------------------------------------+EVENT TIME: 01:44[EST]| |NRC NOTIFIED BY: LADD |LAST UPDATE DATE: 03/14/95 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | EMERGENCY BUS INADVERTENTLY DEENERGIZED DURING MAINTENANCE | | | | THE TRAIN B 4160 VAC BUS WAS INADVERTENTLY DEENERGIZED WHILE | | TROUBLESHOOTING A PROBLEM WITH A BREAKER CELL SWITCH ON A SUPPLY BREAKER. | | THE LOSS OF POWER CAUSED THE TURBINE-DRIVEN AUXILIARY FEEDWATER DISCHARGE | | VALVES TO STROKE OPEN DUE TO AN UNDERVOLTAGE SIGNAL FROM THE SEQUENCER. THE | | TRAIN B EDG WAS IN MAINTENANCE MODE FOR THE TROUBLESHOOTING AND DID NOT | | START. THE PROBLEM WAS ISOLATED AND THE BUS WAS REENERGIZED. THE TURBINE | | DRIVEN AUXILIARY FEEDWATER PUMP WAS TAGGED OUT AND DID NOT START. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+