U.S. Nuclear Regulatory Commission Operations Center Event Reports For 09/23/94 - 09/26/94 ** EVENT NUMBERS ** 27815 27816 27817 27818 27819 27820 27821 27822 27823 27824 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27815 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BEAVER VALLEY REGION: 1 |NOTIFICATION DATE: 09/23/94 | |UNIT: [1] [2] [ ] STATE: PA |NOTIFICATION TIME: 02:28 [ET]| |RX TYPE: [1] W-3-LP,[2] W-3-LP |EVENT DATE: 09/23/94 | +------------------------------------------------+EVENT TIME: 02:28[EDT]| |NRC NOTIFIED BY: DOUGHERTY |LAST UPDATE DATE: 09/23/94 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BELLAMY RDO | |AENS 50.72(b)(1)(v) ENS INOPERABLE | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | ENS PHONE INOPERABLE. | | | | LICENSEE CALLED TO REPORT THAT THEY ARE UNABLE TO CALL THE NRC OPERATIONS | | CENTER USING THEIR ENS PHONE. RI WILL BE INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |HOSPITAL | |EVENT NUMBER: 27816 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: SOUTH BEND MEMORIAL HOSPITAL |NOTIFICATION DATE: 09/23/94 | | CITY: SOUTH BEND REGION: 3 |NOTIFICATION TIME: 11:38 [ET]| | COUNTY: STATE: IN |EVENT DATE: 09/13/94 | |LICENSE#: AGREEMENT: N |EVENT TIME: 00:00[EDT]| | DOCKET: |LAST UPDATE DATE: 09/23/94 | | +-----------------------------+ | |PERSON ORGANIZATION| | |CANIANO RDO | | | | +------------------------------------------------+ | |NRC NOTIFIED BY: RICCI | | |HQ OPS OFFICER: BOB STRANSKY | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |LADM 35.33(a) MED MISADMINISTRATION | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | A PATIENT PRESCRIBED A DOSE OF 6500 cGy WAS GIVEN A DOSE OF 4165 cGy DUE TO | | A MISCALCULATION IN THE TREATMENT PLAN. THE TREATMENT OCCURRED DURING THE | | PERIOD FROM 9/13/94 TO 9/16/94. THE DOSE WAS BEING ADMINISTERED BY TWO | | IMPLANTED CESIUM OVOID SOURCES. NO ADVERSE EFFECTS TO THE PATIENT ARE | | EXPECTED. THE MISADMINISTRATION WAS DISCOVERED ON 9/22/94. | | | | REGION 4 HAS BEEN NOTIFIED OF THIS EVENT BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27817 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: TURKEY POINT REGION: 2 |NOTIFICATION DATE: 09/23/94 | |UNIT: [ ] [4] [ ] STATE: FL |NOTIFICATION TIME: 16:04 [ET]| |RX TYPE: [3] W-3-LP,[4] W-3-LP |EVENT DATE: 09/23/94 | +------------------------------------------------+EVENT TIME: 14:47[EDT]| |NRC NOTIFIED BY: DAVID MORRIS |LAST UPDATE DATE: 09/23/94 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |THOMAS DECKER RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 4 | A/R Y 100 POWER OPERATION | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | REACTOR TRIP ON OVERTEMPERATURE DIFFERENTIAL TEMPERATURE FOLLOWING LOSS OF | | THE 4B FEEDWATER PUMP. | | | | UNIT 4 TRIPPED ON OT DELTA T WHEN THE 4B FEEDWATER PUMP WAS LOST DUE TO THE | | LOSS OF A NON VITAL 4KV BUS. THE CAUSE OF THE REACTOR TRIP IS CURRENTLY | | UNDER INVESTIGATION. | | | | THE REACTOR IS STABLE IN MODE 3. ALL RODS FULLY INSERTED. DECAY HEAT IS | | BEING REMOVED VIA THE STEAM DUMPS TO THE MAIN CONDENSER. THE STEAM | | GENERATORS ARE BEING FED VIA THE NORMAL FEED SYSTEM. THE AUXILIARY FEED | | SYSTEM STARTED DURING THE TRANSIENT AND WAS LATER SECURED BY THE OPERATORS | | PER PROCEDURE. ALL ECCS EQUIPMENT AND THE EDGs ARE OPERABLE. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | | | * * * UPDATE AT 2239 ON 9/23/94 FROM MURPHY TAKEN BY WEAVER * * * | | | | THE INITIATING EVENT THAT CAUSED THE UNIT 4 REACTOR TRIP WAS THE ACTUATION | | OF THE 4C BUS PHASE DIFFERENTIAL RELAY. THE RELAY ACTUATION CAUSED A LOSS | | OF POWER TO TO THE 4C BUS WHICH IN TURN CAUSED LOSS OF A REDUNDANT POWER | | SUPPLY TO THE ROD CONTROL SYSTEM. LOSS OF THIS POWER SUPPLY OCCURRED | | COINCIDENTLY WITH THE FAILURE OF A 24 VDC POWER SUPPLY IN ROD CONTROL POWER | | CABINET 1AC. | | | | THE COMBINATION OF THE LOSS OF BOTH POWER SUPPLIES ALLOWED 12 CONTROL RODS | | TO DROP INTO THE REACTOR. THE RESULTANT DROP IN TEMPERATURE AND PRESSURE | | CAUSED AN OT DELTA T REACTOR TRIP. REPAIRS ARE IN PROGRESS ON THE ROD | | CONTROL SYSTEM & REACTOR START UP IS SCHEDULED FOR 0300 ON 9/24/94. | | THE 4C BUS DIFFERENTIAL RELAY ACTUATION WAS CAUSED BY MAINTENANCE PERSONNEL | | CLOSING THE CUBICLE DOOR THAT CONTAINS THE RELAY (VIBRATION). THE 24 VDC | | POWER SUPPLY IS ASSUMED TO HAVE BEEN BAD WHEN THIS TRANSIENT STARTED. | | | | THE LICENSEE INFORMED THE RESIDENT INSPECTOR AND THE HOO NOTIFIED THE RDO | | (T. DECKER). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27818 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SOUTH TEXAS REGION: 4 |NOTIFICATION DATE: 09/23/94 | |UNIT: [1] [ ] [ ] STATE: TX |NOTIFICATION TIME: 17:21 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 09/23/94 | +------------------------------------------------+EVENT TIME: 11:25[CDT]| |NRC NOTIFIED BY: KEN STRUBLE |LAST UPDATE DATE: 09/23/94 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN PELLET RDO | |NONR OTHER UNSPEC REQMNT | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 48 POWER OPERATION | 48 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | BOTH CONTROL ROOM HVAC TOXIC GAS MONITORS INOPERABLE | | | | AT 1125 CDT CONTROL ROOM OPERATORS WERE NOTIFIED BY INSTRUMENTATION | | PERSONNEL THAT TOXIC GAS MONITOR 9326 WAS INOPERABLE. CONTROL ROOM HVAC | | WAS IMMEDIATELY PLACED IN TOXIC GAS RECIRCULATION BECAUSE TOXIC GAS MONITOR | | 9327 WAS ALREADY INOPERABLE FOR REPAIRS. | | | | FURTHER INVESTIGATION REVEALED THAT TOXIC GAS MONITOR 9326 HAD BEEN | | INOPERABLE SINCE 1500 ON 9/22/94. TECH SPEC. 3.3.7 WAS VIOLATED IN THAT | | CONTROL ROOM HVAC WAS NOT PLACED IN TOXIC GAS RECIRC MODE WITHIN 1 HOUR. | | INVESTIGATION CONTINUES INTO THE CAUSE OF MONITOR 9326 BEING INOPERABLE. | | THIS IS A 24 HOUR REPORT BASED ON SECTION 2.G OF THEIR LICENSE. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27819 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: TURKEY POINT REGION: 2 |NOTIFICATION DATE: 09/24/94 | |UNIT: [ ] [4] [ ] STATE: FL |NOTIFICATION TIME: 07:36 [ET]| |RX TYPE: [3] W-3-LP,[4] W-3-LP |EVENT DATE: 09/24/94 | +------------------------------------------------+EVENT TIME: 06:26[EDT]| |NRC NOTIFIED BY: TOM WOGAN |LAST UPDATE DATE: 09/24/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |THOMAS DECKER RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 4 | M/R N 0 HOT STANDBY | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | MANUAL REACTOR TRIP UPON CHANGE IN ROD BANK POSITION INDICATION. | | | | THE FOLLOWING IS THE TEXT OF A FACSIMILE REPORTING THIS EVENT: | | "DURING THE PERFORMANCE OF OPERATING PROCEDURE 1604.1 (FULL LENGTH RCC | | PERIODIC EXERCISE), ACCEPTANCE CRITERIA WAS BEING VERIFIED SO CREDIT COULD | | BE TAKEN FOR PLANT STARTUP TO SATISFY ROD EXERCISE. SHUTDOWN BANK A HAD | | BEEN WITHDRAWN TO 228 STEPS AS INDICATED ON GROUP STEP COUNTERS AND ALL | | INDIVIDUAL ROD POSITION INDICATORS. | | | | ON THE ROD DEVIATION/AXIAL FLUX PANEL, THE OPERATOR NOTICED THAT ON | | SHUTDOWN BANK B, ONE ROD OFF BOTTOM LIGHT WAS NOT LIT. HE TOUCHED THE LIGHT | | BULB AND NOTICED A MOMENTARY ILLUMINATION (FLASH). COINCIDENTALLY, | | ANNUNCIATOR J5/4 ALARMED INDICATING A VITAL AC BREAKER TRIP. THE ACTUAL RPI | | INDICATION SHOWED SHUTDOWN BANK RODS A NOW AT 135 STEPS. THE ORDER WAS | | GIVEN TO MANUALLY OPEN THE REACTOR TRIP BREAKERS. | | | | ALL EQUIPMENT REQUIRED FOR THE TRIP ACTUATED AS REQUIRED. THE CAUSE OF THE | | VITAL BREAKER OPENING AND CHANGE IN ROD POSITION INDICATION IS UNDER | | INVESTIGATION. FOLLOW UP NOTIFICATION WILL TAKE PLACE WHEN EXACT CAUSE IS | | DETERMINED." END OF TEXT. | | | | ESSENTIALLY, A ROD POSITION INDICATING LIGHT BULB BLEW WHEN TOUCHED BY AN | | OPERATOR. THIS APPARENTLY CAUSED A ROD POSITION INDICATOR CIRCUIT | | MALFUNCTION RESULTING IN UNKNOWN POSITION OF SHUTDOWN BANK A RODS. THE | | LICENSEE OPENED THE REACTOR TRIP BREAKERS BASED ON THE INDICATED ROD | | POSITION DEVIATION AND ALL RODS WENT TO A FULLY INSERTED INDICATION. | | | | THE RESIDENT INSPECTOR HAS BEEN NOTIFIED | | | | | | * * * UPDATE AT 1305 EDT ON 9/24/94 BY HALEY TAKEN BY WEAVER * * * | | | | THE INITIATING EVENT WHICH LED TO A MANUAL REACTOR TRIP ON UNIT 4 HAS BEEN | | TRACED TO AN UNGUARDED LIGHT SOCKET AT SHUTDOWN BANK B - ROD 4 POSITION IN | | THE AXIAL FLUX / ROD DEVIATION CABINET. THE UNGUARDED BULB BURNED OUT AND | | SHORTED WHEN TAPPED BY THE OPERATOR. THIS OVERLOADED THE 120V INTERNAL | | POWER SUPPLY AND TRIPPED A FAST ACTING 10 AMP BREAKER AT VITAL INSTRUMENT | | POWER BUS 4P07. | | | | THE TRIPPING OF BREAKER 4P07-20 DEENERGIZED THE ROD DEVIATION DRAWER AND | | LOADED DOWN SHUTDOWN BANK A ROD POSITION INDICATOR SIGNAL CONDITIONING | | MODULES. THIS CAUSED RPI INDICATION TO DROP FROM 228 TO 135 STEPS. | | | | REPAIRS TO THE LIGHT SOCKET HAVE BEEN MADE AND INSPECTION OF OTHERS IN THE | | DRAWER HAVE BEEN COMPLETED. START UP IS SCHEDULED FOR 1315 ON 9/24/94. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. HOO NOTIFIED THE RDO (T. | | DECKER) | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |IRRETRIEVABLE WELL LOGGING SOURCE | |EVENT NUMBER: 27820 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: HALLIBURTON ENERGY SERVICES |NOTIFICATION DATE: 09/24/94 | | CITY: HOUSTON REGION: 4 |NOTIFICATION TIME: 08:48 [ET]| | COUNTY: STATE: NM |EVENT DATE: 09/21/94 | |LICENSE#: 4201068-07/52 AGREEMENT: Y |EVENT TIME: 11:00[MDT]| | DOCKET: |LAST UPDATE DATE: 09/24/94 | | +-----------------------------+ | |PERSON ORGANIZATION| | |JOHN PELLET RDO | | | | +------------------------------------------------+ | |NRC NOTIFIED BY: JEFF PETTIGREW | | |HQ OPS OFFICER: WILLIAM HUFFMAN | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |EIRR 39.77(c) WELL LOGGING SOURCE | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | IRRETRIEVABLE WELL LOGGING SOURCE. | | | | THE RADIATION SAFETY OFFICER FOR HALLIBURTON ENERGY SERVICES OF HOUSTON, | | TEXAS, REQUESTED PERMISSION TO ABANDON A 1.5 CURIE CESIUM-137 WELL LOGGING | | SOURCE (#SDL-198). THE SOURCE WAS DECLARED IRRETRIEVABLE IN A WELL OWNED BY | | THE MARBOB ENERGY CORPORATION. THE NAME OF THE WELL IS "BURCH KEELY #243" | | IN EDDY COUNTY, NEW MEXICO. THE SOURCE IS AT THE BOTTOM OF THE WELL, | | APPROXIMATELY 4600 FEET DOWN AND IS STILL WITHIN ITS WELL LOGGING TOOL. THE | | WELL IS LOCATED ON FEDERAL LAND. | | | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27821 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BYRON REGION: 3 |NOTIFICATION DATE: 09/24/94 | |UNIT: [ ] [2] [ ] STATE: IL |NOTIFICATION TIME: 13:44 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 09/24/94 | +------------------------------------------------+EVENT TIME: 10:12[CDT]| |NRC NOTIFIED BY: PETER KNARR |LAST UPDATE DATE: 09/24/94 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROY CANIANO RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | A/R Y 99 POWER OPERATION | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | AUTOMATIC REACTOR TRIP CAUSED BY A DROPPED ROD. | | | | MAINTENANCE ON THE ROD CONTROL SYSTEM CAUSED A CONTROL ROD TO DROP, WHICH | | IN TURN CAUSED A REACTOR TRIP ON NEGATIVE RATE. ALL RODS FULLY INSERTED | | AND THE PLANT IS STABLE IN HOT STANDBY. THE S/Gs ARE BEING FED BY THE | | STARTUP FEED SYSTEM AND STEAM IS BEING DUMPED TO THE MAIN CONDENSERS AS | | NECESSARY TO REMOVE DECAY HEAT. THE ROD DROPPED DURING POST MAINTENANCE | | TESTING FOLLOWING THE REPLACEMENT OF CONTROL CARDS IN THE ROD DRIVE | | CABINET. | | | | THE B AUXILIARY FEEDWATER PUMP (AFW) WAS INADVERTENTLY SECURED BY AN | | OPERATOR WHO MISINTERPRETED AN ANNOUNCEMENT RELATED TO THE B MAIN FEEDWATER | | PUMP. THE PUMP WAS RESTARTED WHEN OPERATORS REALIZED WHAT HAD HAPPENED. | | | | AFTER HAVING RESTORED S/G LEVELS FOLLOWING THE TRIP AND HAVING SECURED THE | | AFW SYSTEM, THE B AFW PUMP AGAIN AUTOMATICALLY STARTED. THE SECOND AUTO | | START WAS CAUSED BY A LOW LEVEL IN THE C S/G. THE LOW LEVEL WAS CAUSED BY | | OPERATOR ERROR, AS THE S/G WAS BEING FED BY THE STARTUP FEED PUMP AT THAT | | TIME. | | | | IMMEDIATELY FOLLOWING THE REACTOR TRIP, A CONTAINMENT VENTILATION ISOLATION | | SIGNAL WAS GENERATED. THE CAUSE OF THIS SIGNAL IS UNKNOWN AND UNDER | | INVESTIGATION. ALL CONTAINMENT VENTILATION ISOLATION VALVES WERE CLOSED | | PRIOR TO THE REACTOR TRIP. THERE IS NO INDICATION OF ABNORMAL RADIATION | | LEVELS. | | | | ALSO UNDER INVESTIGATION IS THE AUTO CLOSURE OF THE COMPONENT COOLING WATER | | SURGE TANK VENT ISOLATION VALVE, WHICH CLOSED AS A RESULT OF A TEMPORARY | | LOSS OF SAMPLE FLOW. SAMPLE FLOW HAS BEEN RESTORED AND THE VENT VALVE | | REOPENED. | | | | NO ESTIMATED RESTART DATE WAS AVAILABLE. THE LICENSEE INFORMED THE NRC | | RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27822 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PEACH BOTTOM REGION: 1 |NOTIFICATION DATE: 09/24/94 | |UNIT: [ ] [3] [ ] STATE: PA |NOTIFICATION TIME: 19:37 [ET]| |RX TYPE: [2] GE-4,[3] GE-4 |EVENT DATE: 09/24/94 | +------------------------------------------------+EVENT TIME: 17:24[EDT]| |NRC NOTIFIED BY: MIKE KELLY |LAST UPDATE DATE: 09/24/94 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |RONALD BELLAMY RDO | |AINA 50.72(b)(2)(iii)(A) POT UNABLE TO SAFE SD | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | HPCI INOPERABLE BECAUSE OF A PACKING LEAK ON A STEAM SUPPLY VALVE | | | | THE HPCI STEAM SUPPLY VALVE MO-3-23-15 WAS CLOSED AND THE ELECTRICAL FEED | | REMOVED TO ISOLATE A 3 GPM PACKING LEAK. THIS VALVE IS INSIDE CONTAINMENT. | | THE LEAK HAS STOPPED. THE PLANT IS IN A 7 DAY SHUTDOWN LCO. | | | | BECAUSE THE DOWNSTREAM SIDE OF THIS VALVE IS NOW DEPRESSURIZED AND COOLING | | OFF, THIS VALVE CAN NOT BE IMMEDIATELY REOPENED. | | | | THE PLANT IS EVALUATING WHAT ACTION TO TAKE. THE LICENSEE INFORMED THE | | NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27823 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OYSTER CREEK REGION: 1 |NOTIFICATION DATE: 09/24/94 | |UNIT: [1] [ ] [ ] STATE: NJ |NOTIFICATION TIME: 19:45 [ET]| |RX TYPE: [1] GE-2 |EVENT DATE: 09/24/94 | +------------------------------------------------+EVENT TIME: 10:26[EDT]| |NRC NOTIFIED BY: VANBLARCOM |LAST UPDATE DATE: 09/24/94 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |RONALD BELLAMY 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 +------------------------------------------------------------------------------+ | INADVERTENT CONTAINMENT VENTILATION ISOLATION | | | | THE PLANT RECEIVED A CONTAINMENT HIGH RANGE RADIATION MONITOR ISOLATION | | SIGNAL WHEN AN I&C TECH INADVERTENTLY TURNED THE MONITOR SELECTOR SWITCH TO | | THE OFF POSITION DURING A SURVEILLANCE. THIS CAUSED DRYWELL AND TORUS | | VENTILATION AND PURGE VALVES TO ISOLATE. | | | | THE SWITCH WAS RETURNED TO ITS CORRECT POSITION & THE ISOLATION SIGNAL WAS | | RESET. ALL VALVES WERE RETURNED TO THEIR PREVIOUS POSITIONS. THE LICENSEE | | DETERMINED THIS EVENT TO BE REPORTABLE AT 1900 TODAY. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27824 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CALVERT CLIFFS REGION: 1 |NOTIFICATION DATE: 09/24/94 | |UNIT: [ ] [2] [ ] STATE: MD |NOTIFICATION TIME: 21:02 [ET]| |RX TYPE: [1] CE,[2] CE |EVENT DATE: 09/24/94 | +------------------------------------------------+EVENT TIME: 20:16[EDT]| |NRC NOTIFIED BY: DICK DENTON |LAST UPDATE DATE: 09/24/94 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |RONALD BELLAMY RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | A/R Y 16 POWER OPERATION | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | REACTOR TRIP ON LOW STEAM GENERATOR PRESSURE DURING STARTUP | | | | THE MAIN TURBINE HAD JUST BEEN PARALLELED TO THE GRID AND ELECTRICAL POWER | | WAS STABLE AT 40 MWe, WHEN THE MAIN TURBINE BEGAN TO PICK UP LOAD FOR NO | | APPARENT REASON. OPERATORS NOTICED DECREASING STEAM GENERATOR PRESSURE AND | | REACTOR COOLANT SYSTEM TEMPERATURE. BEFORE ACTION COULD BE TAKEN TO REDUCE | | MAIN TURBINE LOAD, THE REACTOR TRIPPED ON LOW STEAM GENERATOR PRESSURE. | | OPERATORS NOTICED A PEAK TURBINE LOAD OF 210 MWe. | | | | ALL RODS FULLY INSERTED AND NO ESFAS ACTUATION OCCURRED OR WERE REQUIRED. | | THE STEAM GENERATORS ARE BEING FED BY THE MAIN FEED SYSTEM, AND STEAM IS | | BEING DUMPED TO THE MAIN CONDENSER AS NECESSARY TO REMOVE DECAY HEAT. | | | | INVESTIGATION CONTINUES INTO THE CAUSE OF THE TURBINE MALFUNCTION. THE | | LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+