U.S. Nuclear Regulatory Commission Operations Center Event Reports For 07/05/94 - 07/06/94 ** EVENT NUMBERS ** 27481 27482 27483 27484 27485 27486 27487 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27481 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: WASHINGTON NUCLEAR REGION: 4 |NOTIFICATION DATE: 07/05/94 | |UNIT: [2] [ ] [ ] STATE: WA |NOTIFICATION TIME: 01:41 [ET]| |RX TYPE: [2] GE-5 |EVENT DATE: 07/04/94 | +------------------------------------------------+EVENT TIME: 20:29[PDT]| |NRC NOTIFIED BY: GEORGE RICHMOND |LAST UPDATE DATE: 07/05/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CHARLES CAIN 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 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | WHILE PERFORMING A VALVE LINE UP TO ALIGN THE CONTINUOUS BACKFILL TO THE | | REACTOR PRESSURE VESSEL REFERENCE LEGS, AN ESF ACTUATION OCCURRED DUE TO A | | SPURIOUS LEVEL TRANSIENT. ACTUAL REACTOR VESSEL LEVEL REMAINED CONSTANT. | | THE LEVEL TRANSIENT WAS A TRANSIENT WITHIN THE INDICATION SYSTEM ONLY. | | | | THE HIGH PRESSURE CORE SPRAY DIESEL GENERATOR AUTOMATICALLY STARTED ON A | | LEVEL 2 SIGNAL (REACTOR VESSEL WATER LEVEL -50 INCHES FROM REFERENCE). NO | | INJECTION TO THE VESSEL OCCURRED BECAUSE HIGH PRESSURE CORE SPRAY WAS NOT | | REQUIRED TO BE OPERABLE. A REACTOR PROTECTION SYSTEM HALF SCRAM OCCURRED | | DUE TO A LEVEL 3 SIGNAL (REACTOR VESSEL WATER LEVEL 13 INCHES ABOVE | | REFERENCE). THE ACTUATION SIGNALS HAVE BEEN RESET AND THE HIGH PRESSURE | | CORE SPRAY DIESEL HAS BEEN SECURED. | | | | THE LICENSEE WILL CONVENE AN INCIDENT REVIEW BOARD AND A PROBLEM EVALUATION | | REQUEST WILL BE INITIATED. | | | | THE NRC RESIDENT INSPECTOR WILL BE NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27482 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: LASALLE REGION: 3 |NOTIFICATION DATE: 07/05/94 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 07:01 [ET]| |RX TYPE: [1] GE-5,[2] GE-5 |EVENT DATE: 07/05/94 | +------------------------------------------------+EVENT TIME: 03:36[CDT]| |NRC NOTIFIED BY: JIM SPIELER |LAST UPDATE DATE: 07/05/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |RONALD GARDNER RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | A/R Y 56 POWER OPERATION | 0 HOT SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | DURING THE UNIT 1 STARTUP, THE "B" TURBINE DRIVEN REACTOR FEED PUMP CONTROL | | SYSTEM MALFUNCTIONED RESULTING IN AN AUTOMATIC SCRAM ON LOW REACTOR LEVEL | | (12.5 INCHES). REACTOR LEVEL WAS RECOVERED MANUALLY AND IS PRESENTLY | | STABLE. THE EXACT CAUSE OF THE MALFUNCTION IS NOT KNOWN AT THIS TIME. THE | | LICENSEE WILL INVESTIGATE. | | | | UNIT 1 IS PRESENTLY IN HOT SHUTDOWN. ALL RODS FULLY INSERTED. HEAT IS | | BEING DUMPED TO THE CONDENSER. OTHER THAN THE INITIATING EVENT, THERE WERE | | NO UNUSUAL REACTOR WATER LEVEL SWINGS. THERE WERE NO ABNORMAL PRESSURE | | TRANSIENTS AND NO SAFETY / RELIEF VALVES LIFTED. | | | | DURING THE SCRAM, THE LICENSEE EXPERIENCED SOME TROUBLE WITH THE REACTOR | | MANUAL CONTROL SYSTEM RESULTING FROM A BLOWN FUSE. ADDITIONALLY, THE "A" | | ELECTRICAL HYDRAULIC CONTROL PUMP TRIPPED. THE CAUSE IS UNKNOWN AT THIS | | TIME. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27483 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 07/05/94 | |UNIT: [ ] [ ] [3] STATE: CT |NOTIFICATION TIME: 10:39 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 07/05/94 | +------------------------------------------------+EVENT TIME: 10:30[EDT]| |NRC NOTIFIED BY: R. W. ROTHGEB |LAST UPDATE DATE: 07/05/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |JACK DURR RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |AL CHAFFEE EO | | |SIMMERS 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 BECAUSE MORE THAN 1 ROD IN CONTROL BANK "D" HAS | | QUESTIONABLE POSITION INDICATION ON THE DIGITAL ROD POSITION INDICATION | | SYSTEM. THIS RESULTS IN AN UNRELIABLE POSITION INDICATION FOR CONTROL BANK | | "D." | | | | THE LICENSEE IS COMMENCING A SHUTDOWN PER TECHNICAL SPECIFICATION 3.0.3. | | THEY ARE TROUBLESHOOTING THE DIGITAL ROD POSITION INDICATION SYSTEM AND | | REVIEWING ROD POSITION DATA TRANSMITTED TO THE PLANT COMPUTER. FLUX MAPS | | HAVE DETERMINED THAT THE RODS ARE POSITIONED WITHIN +/- 12 STEPS OF THE | | GROUP INDICATION AND ARE MOVING IN TOGETHER. | | | | THE UNUSUAL EVENT WILL BE TERMINATED WHEN THE ACTION STATEMENTS FOR | | TECHNICAL SPECIFICATION 3.0.3 HAVE BEEN SATISFIED OR THE DIGITAL ROD | | POSITION INDICATION SYSTEM HAS BEEN RESTORED TO RELIABLE OPERATION. | | | | THE LICENSEE HAS NOTIFIED STATE & LOCAL OFFICIALS & THE RESIDENT INSPECTOR. | | | | * * * UPDATE AT 1345 BY ROTHGEB ENTERED BY HOO JOLLIFFE * * * | | | | AT 1342, LICENSEE REPLACED A DEFECTIVE COMPUTER CARD IN THE DEVIATION | | CIRCUIT, TESTED THE SYSTEM SATISFACTORILY, TERMINATED THE UNIT 3 PLANT | | SHUTDOWN AT 64% POWER, EXITED TECH SPEC LCO A/S 3.0.3, AND TERMINATED THE | | UNUSUAL EVENT. | | | | LICENSEE NOTIFIED STATE AND LOCAL OFFICIALS AND THE NRC RESIDENT INSPECTOR | | OF THE TERMINATION OF THE UNUSUAL EVENT. | | | | HOO NOTIFIED R1DO DURR, NRR EO CHRIS GRIMES, FEMA SIMMERS. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27484 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OYSTER CREEK REGION: 1 |NOTIFICATION DATE: 07/05/94 | |UNIT: [1] [ ] [ ] STATE: NJ |NOTIFICATION TIME: 12:18 [ET]| |RX TYPE: [1] GE-2 |EVENT DATE: 07/05/94 | +------------------------------------------------+EVENT TIME: 12:05[EDT]| |NRC NOTIFIED BY: DECKER |LAST UPDATE DATE: 07/06/94 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |JACK DURR RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |CHRIS GRIMES EO | |NLCO TECH SPEC LCO A/S |SIMMERS FEMA | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | - UE DUE TO CONTAINMENT SPRAY SYSTEM INOP DUE TO HEAT EXCHANGER FOULING - | | | | AT 1205, LICENSEE DECLARED AN UNUSUAL EVENT DUE TO BOTH TRAINS OF THE | | CONTAINMENT SPRAY SYSTEM BEING DECLARED INOPERABLE DUE TO HEAT EXCHANGER | | FOULING. | | | | TECH SPEC LCO A/S 3.4.C.7 REQUIRES LICENSEE TO IMMEDIATELY COMMENCE A | | PLANT SHUTDOWN AND TO PLACE THE PLANT IN AT LEAST COLD SHUTDOWN CONDITION | | WITHIN 30 HOURS WITH BOTH TRAINS INOPERABLE. | | | | TECH SPEC LCO A/S 3.4.C.3 REQUIRES LICENSEE TO PLACE THE PLANT IN AT LEAST | | COLD SHUTDOWN CONDITION WITHIN 7 DAYS WITH ONE TRAIN INOPERABLE. | | | | LICENSEE EXPECTS TO RESTORE AT LEAST ONE TRAIN TO OPERABLE STATUS WITHIN | | 24 HOURS. | | | | LICENSEE BEGAN REDUCING POWER AND EXPECTS TO PLACE THE PLANT IN | | HOT SHUTDOWN CONDITION WITHIN 24 HOURS PROVIDED AT LEAST ONE TRAIN | | HAS NOT BEEN RESTORED TO OPERABLE STATUS WITHIN 24 HOURS. | | | | LICENSEE NOTIFIED STATE AND LOCAL OFFICIALS AND THE NRC RESIDENT INSPECTOR | | OF THE DECLARATION OF THE UNUSUAL EVENT. | | | | *** UPDATE FROM HUTTON TO HUFFMAN AT 0242 EDT ON 7/6/94 *** | | THE LICENSEE TERMINATED THEIR UNUSUAL EVENT 0225 EDT WHEN THE SYSTEM "1" | | CONTAINMENT SPRAY HEAT EXCHANGER WAS CLEANED AND RETURNED TO SERVICE AND | | DECLARED OPERABLE. POWER HAD BEEN REDUCED TO 52% BUT THE LICENSEE PLANS TO | | INCREASE BACK TO FULL POWER. THE STATE AND LOCAL AUTHORITIES HAVE BEEN | | INFORMED. THE RESIDENT WILL BE NOTIFIED. R1DO(DURR); EO(ROSSI); AND FEMA | | (LOUZONIS) WERE UPDATED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27485 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BEAVER VALLEY REGION: 1 |NOTIFICATION DATE: 07/05/94 | |UNIT: [1] [2] [ ] STATE: PA |NOTIFICATION TIME: 15:36 [ET]| |RX TYPE: [1] W-3-LP,[2] W-3-LP |EVENT DATE: 07/05/94 | +------------------------------------------------+EVENT TIME: 15:20[EDT]| |NRC NOTIFIED BY: NELSON |LAST UPDATE DATE: 07/05/94 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JACK DURR 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 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | BEAVER COUNTY EMERGENCY SIRENS INOPERABLE POSSIBLY DUE TO LIGHTNING STRIKES | | DURING LOCAL THUNDER STORMS. | | | | LICENSEE IS DETERMINING THE CAUSE AND WILL MAKE REPAIRS. | | | | LICENSEE NOTIFIED BEAVER COUNTY OFFICIALS AND THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE AT 1629 BY HUMMEL TAKEN BY HOO JOLLIFFE * * * | | | | AT 1625, LICENSEE RESTORED THE BEAVER COUNTY EMERGENCY SIRENS TO OPERABLE | | STATUS. | | | | LICENSEE NOTIFIED BEAVER COUNTY OFFICIALS AND WILL NOTIFY THE NRC RESIDENT | | INSPECTOR. | | | | HOO NOTIFIED R1DO DURR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27486 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OCONEE REGION: 2 |NOTIFICATION DATE: 07/05/94 | |UNIT: [ ] [ ] [3] STATE: SC |NOTIFICATION TIME: 18:09 [ET]| |RX TYPE: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP |EVENT DATE: 07/05/94 | +------------------------------------------------+EVENT TIME: 10:25[EDT]| |NRC NOTIFIED BY: LOOPER |LAST UPDATE DATE: 07/05/94 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |PIERCE SKINNER RDO | |NINF INFORMATION ONLY | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | | | | | 3 | N N 0 HOT SHUTDOWN | 0 HOT SHUTDOWN | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | - UNIT 3 SHUTDOWN TO REPAIR / REPLACE LEAKING LETDOWN COOLER - | | | | LICENSEE DISCOVERED A 5 GPM ISOLABLE PRIMARY LEAK IN THEIR UNIT 3 LETDOWN | | COOLER. TECH SPEC IDENTIFIED PRIMARY LEAK RATE LIMIT IS 10 GPM. | | | | AT 1025, LICENSEE ELECTED TO BEGIN SHUTTING UNIT 3 DOWN FROM 100% POWER | | TO REPAIR THE LEAK. | | | | AT 1730, UNIT 3 ENTERED MODE 4 (HOT SHUTDOWN). | | | | LICENSEE IS IN THE PROCESS OF ISOLATING THE LEAK. | | | | LICENSEE ESTIMATES THAT IT WILL TAKE APPROXIMATELY 10 DAYS TO REPAIR / | | REPLACE THE COOLER. | | | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27487 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: POINT BEACH REGION: 3 |NOTIFICATION DATE: 07/05/94 | |UNIT: [1] [2] [ ] STATE: WI |NOTIFICATION TIME: 19:01 [ET]| |RX TYPE: [1] W-2-LP,[2] W-2-LP |EVENT DATE: 07/05/94 | +------------------------------------------------+EVENT TIME: 18:01[CDT]| |NRC NOTIFIED BY: WOOD |LAST UPDATE DATE: 07/05/94 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN JACOBSON RDO | |NINF INFORMATION ONLY | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | MULTIPLE TORNADOS WERE SIGHTED IN THE GENERAL AREA OF THE PLANT SITE. | | | | 345 KV OFFSITE POWER LINE #151 WAS LOST. ONE OFFSITE POWER LINE TOWER | | IS DOWN. | | | | UNIT 1 AND UNIT 2 ARE OPERATING NORMALLY WITH OFFSITE POWER AVAILABLE. | | | | LICENSEE IS ASSESSING THE DAMAGE. | | | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+