U.S. Nuclear Regulatory Commission Operations Center Event Reports For 04/19/95 - 04/20/95 ** EVENT NUMBERS ** 28559 28701 28702 28703 28704 28705 28706 28707 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28559 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 03/20/95 | |UNIT: [ ] [3] [ ] STATE: NY |NOTIFICATION TIME: 02:28 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 03/20/95 | +------------------------------------------------+EVENT TIME: 01:30[EST]| |NRC NOTIFIED BY: HOLDAM |LAST UPDATE DATE: 04/19/95 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MODES RDO | |DDDD 73.71 UNSPECIFIED PARAGRAPH | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 3 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | SAFEGUARDS SYSTEM DEGRADATION RELATED TO POWER SUPPLY FUNCTIONS. NOT | | IMMEDIATELY COMPENSATED ON DISCOVERY BUT COMPENSATED NOW. SEE HOO LOG FOR | | DETAILS. NRC RESIDENT INSPECTOR WILL BE INFORMED BY LICENSEE. | | | | ***UPDATE ON 4/19/95 @ 18:44 BY WOOLEY*** | | | | THE LICENSEE IS RETRACTING THIS EVENT. THE LICENSEE DETERMINED THAT THIS | | EVENT WAS LOGGABLE AND NOT REPORTABLE BECAUSE THERE WAS NOT A LOSS OF POWER | | FOR GREATER THAN 10 MINUTES. | | | | THE RESIDENT INSPECTOR AND RDO RULAND WERE NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28701 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BEAVER VALLEY REGION: 1 |NOTIFICATION DATE: 04/19/95 | |UNIT: [1] [ ] [ ] STATE: PA |NOTIFICATION TIME: 00:46 [ET]| |RX TYPE: [1] W-3-LP,[2] W-3-LP |EVENT DATE: 04/18/95 | +------------------------------------------------+EVENT TIME: 23:57[EDT]| |NRC NOTIFIED BY: JEFFERY SHIPE |LAST UPDATE DATE: 04/19/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WILLIAM RULAND 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 | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | A REACTOR OPERATOR INADVERTENTLY SECURED THE WRONG PUMP. | | | | THE UNIT HAS A SUB-ATMOSPHERIC CONTAINMENT WITH TWO SMALL VACUUM PUMPS TO | | MAINTAIN CONTAINMENT VACUUM, AND THE LICENSEE HAS A LOG REQUIREMENT THAT A | | NON-OPERATING VACUUM PUMP WILL BE RUN FOR 15 MINUTES EVERY MIDNIGHT SHIFT. | | AT THE END OF A 15 MINUTE RUN OF THE B CONTAINMENT VACUUM PUMP (CVP1B), A | | REACTOR OPERATOR INADVERTENTLY SECURED THE OPERATING RIVER WATER PUMP | | (WRP1B) WHILE INTENDING TO SECURE CONTAINMENT VACUUM PUMP CVP1B. STANDBY | | RIVER WATER PUMP WRP1A AUTOMATICALLY STARTED AS DESIGNED. THE REACTOR | | OPERATOR IMMEDIATELY RESTARTED RIVER WATER PUMP WRP1B AND SECURED STANDBY | | RIVER WATER PUMP WRP1A. THE SYSTEM WAS RESTORED TO NORMAL SYSTEM | | ARRANGEMENT, AND ALL PARAMETERS WERE NORMAL. | | | | THE LICENSEE STATED THAT THE SWITCHES FOR THE B CONTAINMENT VACUUM PUMP AND | | RIVER WATER PUMP WRP1B WERE LOCATED BESIDE EACH OTHER AND THAT THE RIVER | | WATER PUMPS WERE CONSIDERED TO BE ESF EQUIPMENT. | | | | THE LICENSEE PLANS TO NOTIFY THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |OTHER NUCLEAR MATERIAL | |EVENT NUMBER: 28702 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: UNIVERSITY OF VIRGINIA MEDICAL CTR |NOTIFICATION DATE: 04/19/95 | | CITY: CHARLOTTESVILLE REGION: 2 |NOTIFICATION TIME: 08:35 [ET]| | COUNTY: ALBEMARLE STATE: VA |EVENT DATE: 04/18/95 | |LICENSE#: 45-00034-26 AGREEMENT: N |EVENT TIME: 08:45[EDT]| | DOCKET: |LAST UPDATE DATE: 04/19/95 | | +-----------------------------+ | |PERSON ORGANIZATION| | |CAUDLE JULIAN RDO | | |DON COOL EO | +------------------------------------------------+ | |NRC NOTIFIED BY: RICHARD PICCOLO | | |HQ OPS OFFICER: LEIGH TROCINE | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |IBAC 30.50(b)(1)(i) ACCESS DENIED >24 HRS | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | ENHANCED RADIOLOGICAL CONTROLS IN AN AREA FOR GREATER THAN 24 HOURS AT THE | | UNIVERSITY OF VIRGINIA NUCLEAR MEDICINE DEPARTMENT TEACHING HOSPITAL | | LOCATED IN CHARLOTTESVILLE, VIRGINIA. | | | | AT APPROXIMATELY 0845 ON APRIL 18, 1995, THE LICENSEE WAS IN THE PROCESS OF | | CALIBRATING A 70-MILLICURIE IODINE-131 THERAPY SOURCE IN THE NUCLEAR | | MEDICINE DEPARTMENT TEACHING HOSPITAL. WHILE PULLING THE SOURCE OUT OF THE | | DOSE CALIBRATOR, THE VIAL FELL OFF AND OUT OF THE CAP. IT HIT THE SIDE OF | | THE DOSE CALIBRATOR, AND APPROXIMATELY 20 MILLICURIES IN THE VOLUME OF | | ABOUT 1 CC LANDED ON AN ABSORBENT PAD. THE LICENSEE SPENT THE BALANCE OF | | THE DAY DECONNING, SURVEYING, PUTTING PADS DOWN ON THE FLOOR, AND | | BIOASSAYING THE INDIVIDUALS INVOLVED. THE HIGHEST BIOASSAY FOUND WAS 0.003 | | MICROCURIES. | | | | THERE WAS ONLY ONE CONTAMINATION OF ANY SIGNIFICANCE DURING THIS EVENT. A | | FEMALE TECHNOLOGIST WAS FOUND TO HAVE A SMALL NUMBER OF COUNTS OF IODINE IN | | HER HAIR. THE LICENSEE WAS ABLE TO REMEDY THIS VERY QUICKLY BY CLIPPING | | OFF THE CONTAMINATED HAIR. THE BIOASSAY ON THIS TECHNOLOGIST WAS 0.0027 | | MICROCURIES. | | | | ADDITIONAL LICENSEE INVESTIGATIONS TO ASCERTAIN THE ROOT CAUSE (POTENTIAL | | DESIGN PROBLEMS, TRAINING, ETC.) ARE CURRENTLY ONGOING. THE LICENSEE HAS | | DECONNED AS MUCH AS IT COULD WITHOUT LIFTING UP TILES. THE LICENSEE | | CURRENTLY PLANS ON LIFTING THE BLUE PADS TODAY IN ORDER TO PERFORM | | ADDITIONAL SWIPE TESTS TO SEE IF ANY OF THE CONTAMINATION IS SMEARABLE. IF | | SO, THE LICENSEE INTENDS TO CONTINUE DECONNING. THE LICENSEE PLANS ON | | KEEPING THE BLUE PADS DOWN UNTIL THE MIGRATION STOPS. AS AN ADDITIONAL | | PRECAUTION, THE LICENSEE HAS SET UP A STEP-OFF PAD OUTSIDE OF THE HOT | | LABORATORY (THE PHARMACY AREA). THIS STEP-OFF PAD WILL PROBABLY BE REMOVED | | SOME TIME THIS MORNING. | | | | THE LICENSEE HAS NOT NOTIFIED ANY OTHER AGENCIES OF THIS EVENT BUT PLANS ON | | NOTIFYING THE NRC REGION II INSPECTORS TO KEEP EVERYONE INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28703 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BRUNSWICK REGION: 2 |NOTIFICATION DATE: 04/19/95 | |UNIT: [1] [ ] [ ] STATE: NC |NOTIFICATION TIME: 11:45 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 04/19/95 | +------------------------------------------------+EVENT TIME: 08:23[EDT]| |NRC NOTIFIED BY: SCHALL |LAST UPDATE DATE: 04/19/95 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CAUDLE JULIAN 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 +------------------------------------------------------------------------------+ | THE PLANT HAD SECONDARY CONTAINMENT ISOLATION AND CONTAINMENT ATMOSPHERIC | | CONTROL SYSTEM ISOLATION. | | | | AT 08:23, A UNIT 1 SECONDARY CONTAINMENT ISOLATION AND CONTAINMENT | | ATMOSPHERIC CONTROL SYSTEM (GROUP 6B) ISOLATION OCCURRED DUE TO A FAILURE | | OF REACTOR BUILDING VENTILATION EXHAUST RADIATION MONITOR "B". THE HIGH | | VOLTAGE POWER SUPPLY TO THE MONITOR FAILED. THE CAUSE IS CURRENTLY UNKNOWN | | AND IS BEING INVESTIGATED. THE REACTOR BUILDING EXHAUST AND SUPPLY DAMPERS | | CLOSED, AND THE VENTILATION FANS TRIPPED AS REQUIRED. THE FOLLOWING GROUP | | "6B" VALVES CLOSED: CAC-V10, CAC-V15, CAC-SV-1262, CAC-SV-3439, AND | | CAC-SV-3440. THE OTHER GROUP "6B" VALVES WERE CLOSED OR UNDER EQUIPMENT | | CLEARANCE. THE GROUP "6A" CONTAINMENT ATMOSPHERIC CONTROL VALVES WERE NOT | | AFFECTED BY THE ISOLATION SIGNAL. THE STANDBY GAS TREATMENT TRAINS | | RECEIVED AN AUTOMATIC START SIGNAL AND STARTED AS REQUIRED. SAFETY | | SIGNIFICANCE OF THE EVENT WAS MINIMAL. THE LICENSEE HAS REPLACED THE HIGH | | VOLTAGE POWER SUPPLY AND ALL SYSTEMS WERE RETURNED TO NORMAL. | | | | THE RESIDENT INSPECTOR WAS INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28704 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: NINE MILE POINT REGION: 1 |NOTIFICATION DATE: 04/19/95 | |UNIT: [1] [ ] [ ] STATE: NY |NOTIFICATION TIME: 11:58 [ET]| |RX TYPE: [1] GE-2,[2] GE-5 |EVENT DATE: 04/19/95 | +------------------------------------------------+EVENT TIME: 10:35[EDT]| |NRC NOTIFIED BY: SHELTON |LAST UPDATE DATE: 04/19/95 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WILLIAM RULAND 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 +------------------------------------------------------------------------------+ | THE PLANT HAD A REACTOR SCRAM FROM 100% DUE TO A TURBINE/GENERATOR TRIP. | | | | THE PLANT HAD A GENERATOR TRIP WHICH RESULTED IN A TURBINE TRIP AND CAUSED | | A SUBSEQUENT REACTOR SCRAM. THE CAUSE OF THE GENERATOR TRIP IS UNKNOWN AND | | IS BEING INVESTIGATED. ALL RODS FULLY INSERTED, AND HPCI INITIATED ON A | | TURBINE TRIP SIGNAL. (HPCI ALSO RECEIVED A LOW REACTOR WATER LEVEL | | SIGNAL.) FIVE OUT OF SIX SAFETY RELIEF VALVES LIFTED DUE TO REACTOR | | PRESSURE REACHING BETWEEN 1080 AND 1090 PSI. ALL VALVES FULLY RESEATED. | | | | OPERATORS ENTERED EMERGENCY OPERATING PROCEDURE (EOP) "2" DUE TO THE LOW | | REACTOR WATER LEVEL AND EXITED THE EOP WITHIN 15 MINUTES AFTER THEY HAD | | STABILIZED THE LEVEL. THERE WAS ALSO A PROBLEM WITH THE FAST TRANSFER OF | | POWER BOARD "11". IT DID NOT AUTOMATICALLY TRANSFER AND HAD TO BE MANUALLY | | TRANSFERRED. THE MANUAL TRANSFER CAUSED A DELAY OF LESS THAN 30 SECONDS IN | | THE AUTOMATIC START OF HPCI TRAIN "11". THE LOSS OF POWER BOARD "11" ALSO | | CAUSED THE LOSS OF 2 OF THE 4 REACTOR RECIRCULATION PUMPS (WHICH WERE | | EVENTUALLY MANUALLY RESTARTED), SERVICE WATER PUMP "11", CIRCULATING WATER | | PUMP "11", REACTOR WATER CLEANUP PUMP "11", AND TURBINE BUILDING CLOSED | | LOOP COOLING PUMP "11". ALL OF THESE WERE RETURNED TO SERVICE AFTER THE | | "11" BOARD WAS MANUALLY TRANSFERRED. THE HEAT SINK IS THE CONDENSER. | | | | THE RESIDENT INSPECTOR WAS INFORMED, AND THERE WILL BE A PRESS RELEASE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |HOSPITAL | |EVENT NUMBER: 28705 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: MISSOURI DELTA COMMUNITY HOSPITAL |NOTIFICATION DATE: 04/19/95 | | CITY: SIKESTON REGION: 3 |NOTIFICATION TIME: 12:18 [ET]| | COUNTY: STATE: MO |EVENT DATE: 04/18/95 | |LICENSE#: 24-12876-02 AGREEMENT: N |EVENT TIME: 09:00[CDT]| | DOCKET: |LAST UPDATE DATE: 04/19/95 | | +-----------------------------+ | |PERSON ORGANIZATION| | |JOHN MADERA RDO | | | | +------------------------------------------------+ | |NRC NOTIFIED BY: COLBERT | | |HQ OPS OFFICER: CHAUNCEY GOULD | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NINF INFORMATION ONLY | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | A DIAGNOSTIC WAS BEING PERFORMED ON A PATIENT AT MISSOURI DELTA COMMUNITY | | HOSPITAL, AND THE FAMILY PHYSICIAN HAD RECOMMENDED USING EITHER THALLIUM OR | | CARDIOLITE FOR A CARDIAC SCAN. THE CARDIOLOGIST, HOWEVER, WANTED THALLIUM | | TO BE USED, BUT DUE TO A COMMUNICATION PROBLEM, CARDIOLITE WAS USED. THE | | AMOUNT OF CARDIOLITE USED WAS THE PRESCRIBED AMOUNT. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28706 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: GRAND GULF REGION: 2 |NOTIFICATION DATE: 04/20/95 | |UNIT: [1] [ ] [ ] STATE: MS |NOTIFICATION TIME: 00:30 [ET]| |RX TYPE: [1] GE-6 |EVENT DATE: 04/19/95 | +------------------------------------------------+EVENT TIME: 00:00[CDT]| |NRC NOTIFIED BY: KELLY McDONALD |LAST UPDATE DATE: 04/20/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: | | |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 +------------------------------------------------------------------------------+ | UNEXPECTED ESF ACTUATION (VENTILATION ISOLATION AND STANDBY GAS TREATMENT | | ACTUATION). | | | | DURING THE PERFORMANCE OF AN ELECTRICAL WORK ORDER, 125-VOLT DC BREAKER NO. | | 72-DA33 WAS OPENED FOR AN OVERCURRENT TRIP TEST. ALTHOUGH THIS THIS ACTION | | WAS PERFORMED PER THE WORK ORDER, IT RESULTED IN THE UNEXPECTED | | DE-ENERGIZATION OF THE CONTROL LOGIC FOR DIVISION 1 STANDBY GAS TREATMENT, | | "A" CONTROL ROOM STANDBY FRESH AIR, AND "A" COMBUSTIBLE GAS CONTROL. THIS | | IN TURN CAUSED THESE SYSTEMS TO AUTOMATICALLY INITIATE. THE DIVISION 1 | | AUXILIARY BUILDING ISOLATION VALVES ALSO RECEIVED AN ISOLATION SIGNAL. | | BREAKER NO. 72-DA33 WAS RECLOSED WITHIN APPROXIMATELY 30 SECONDS, AND | | SYSTEMS WERE RESTORED TO PRE-EVENT STATUS. THE LICENSEE'S ROOT CAUSE | | INVESTIGATION IS ONGOING. | | | | THE NRC RESIDENT INSPECTOR WILL BE NOTIFIED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28707 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: ARKANSAS NUCLEAR REGION: 4 |NOTIFICATION DATE: 04/20/95 | |UNIT: [1] [ ] [ ] STATE: AR |NOTIFICATION TIME: 05:53 [ET]| |RX TYPE: [1] B&W-L-LP,[2] CE |EVENT DATE: 04/20/95 | +------------------------------------------------+EVENT TIME: 03:13[CDT]| |NRC NOTIFIED BY: DARYLL SAULSBERRY |LAST UPDATE DATE: 04/20/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CHARLES CAIN RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | A/R Y 100 POWER OPERATION | 0 HOT STANDBY | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LIGHTNING HIT APPARENTLY CAUSED A GENERATOR STATOR GROUND WHICH | | SUBSEQUENTLY CAUSED A GENERATOR LOCKOUT AND REACTOR TRIP. ALL ROD INSERTED | | AS DESIGNED. THERE WAS NO LOSS OF OFFSITE POWER, AND THERE WERE NO | | PROBLEMS WITH ANY POWER SUPPLY TRANSFERS. ALL ECCS SYSTEMS AND EDGS ARE | | CURRENTLY OPERABLE, AND THERE WERE NO ESF ACTUATIONS. THE LICENSEE IS | | STEAMING TO THE MAIN CONDENSER AND FEEDING WITH EFW. THE LICENSEE NEVER | | STEAMED TO ATMOSPHERE. THE UNIT IS CURRENTLY IN A STABLE CONDITION. | | | | THE FOLLOWING ABNORMAL SYSTEM FUNCTIONS OCCURRED POSSIBLY DUE TO THE | | LIGHTNING STRIKE: (1) MAIN STEAM SAFETY VALVE REMAINED OPEN FOR LONGER | | THAN EXPECTED ON THE "B" STEAM GENERATOR (ALL MAIN STEAM SAFETY VALVES ARE | | CURRENTLY CLOSED.), (2) HALF TRIP ON EMERGENCY FEEDWATER INITIATION AND | | CONTROL SYSTEM DUE TO POWER SUPPLY PROBLEM AND WAS CAUSED BY A LOW LEVEL | | INITIATE ON EFW (NO ACTUALLY LOW LEVEL CONDITION OCCURRED.), (3) DECREASE | | OF CONDENSER VACUUM TO APPROXIMATELY 20.4" Hg (CONDENSER VACUUM IS | | RECOVERING AT THIS TIME, AND THE ROOT CAUSE IS CURRENTLY UNDER | | INVESTIGATION.), AND (4) ATMOSPHERIC DUMP VALVE NO. CV-2668 ON THE "A" | | STEAM GENERATOR RECEIVED AN OPEN DEMAND SIGNAL BUT THE DOWNSTREAM BLOCK | | VALVE REMAINED CLOSED (THE ROOT CAUSE IS CURRENTLY UNDER INVESTIGATION.). | | | | | | THE LICENSEE MADE A COURTESY CALL TO THE ARKANSAS DEPARTMENT OF HEALTH AND | | WILL INFORM THE NRC RESIDENT INSPECTOR. NO PRESS RELEASE IS PLANNED. | +------------------------------------------------------------------------------+