U.S. Nuclear Regulatory Commission Operations Center Event Reports For 04/20/94 - 04/21/94 ** EVENT NUMBERS ** 26971 26991 27125 27126 27127 27128 27129 27130 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 26971 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PALISADES REGION: 3 |NOTIFICATION DATE: 03/21/94 | |UNIT: [1] [ ] [ ] STATE: MI |NOTIFICATION TIME: 11:14 [ET]| |RX TYPE: [1] CE |EVENT DATE: 03/21/94 | +------------------------------------------------+EVENT TIME: 08:15[EST]| |NRC NOTIFIED BY: PAUL FITTON |LAST UPDATE DATE: 04/20/94 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WAYNE SHAFER 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 N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE DETERMINED THAT AN ADDITIONAL 20,000 GALLONS OF WATER | | AVAILABLE FOR POST LOCA INJECTION WOULD RAISE THE FLOOD LEVEL INSIDE | | CONTAINMENT THREE INCHES. THIS IS NOT ACCOUNTED FOR IN THE FLOOD LEVEL | | ANALYSIS AND MIGHT INVALIDATE EQUIPMENT QUALIFICATIONS. THE LICENSEE IS | | CHECKING THIS POSSIBILITY. THE LICENSEE WILL INFORM THE NRC RESIDENT | | INSPECTOR. | | | | ***UPDATE ON 4/20/94 @ 17:01 BY KUEMIN TO GOULD*** THE LICENSEE IS | | RETRACTING THIS EVENT SINCE FURTHER REVIEW HAS REVEALED THAT THERE ARE A | | FEW VALVE OPERATORS ON BOTH THE HPCI AND LPCI SYSTEMS THAT WOULD BECOME | | SUBMERGED. HOWEVER, PRIOR TO BEING SUBMERGED, THE VALVES WOULD HAVE GONE TO | | THEIR SAFETY(OPEN) POSITION. THE FAILURE OF THE VALVES(IN THE OPEN | | POSITION) AFTER BEING SUBMERGED WOULD NOT IMPACT THE ABILITY OF THE PLANT | | TO MITIGATE THE ACCIDENT, THEREFORE THE EVENT IS NOT REPORTABLE. THE RI | | WILL BE INFORMED. REG 3(WRIGHT) NOTIFIED. | +------------------------------------------------------------------------------+ !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 26991 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PALISADES REGION: 3 |NOTIFICATION DATE: 03/25/94 | |UNIT: [1] [ ] [ ] STATE: MI |NOTIFICATION TIME: 10:24 [ET]| |RX TYPE: [1] CE |EVENT DATE: 03/25/94 | +------------------------------------------------+EVENT TIME: 07:15[EST]| |NRC NOTIFIED BY: FITTON |LAST UPDATE DATE: 04/20/94 | |HQ OPS OFFICER: GREG SCARFO +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WAYNE SHAFER 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 N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | A MAIN STEAM LINE (MSL) WAS DECLARED INOPERABLE WHEN TWO FASTENER NUTS WERE | | FOUND MISSING FROM A PIPE-WHIP RESTRAINTS. | | | | THE FOLLOWING IS THE TEXT OF A FACSIMILE SUBMITTED BY THE LICENSEE: | | "PLANT WALKDOWN OF MAIN STEAM PIPING OUTSIDE CONTAINMENT IDENTIFIED MISSING | | FASTENER NUTS ON MAIN STEAM LINE WHIP RESTRAINTS. 10CFR50.72(iii)D | | REQUIRES A 4 HOUR NON-EMERGENCY REPORT FOR CONDITIONS THAT MAY PREVENT THE | | MITIGATION OF AN ACCIDENT. MAIN STEAM LINE WHIP RESTRAINTS ARE REQUIRED TO | | MITIGATE A MAIN STEAM LINE BREAK. | | | | THE CAUSE OF THIS EVENT IS TO BE DETERMINED BY EVALUATION OF CORRECTIVE | | ACTION DOCUMENT. TWO FASTENER NUTS ARE MISSING ON ONE WHIP RESTRAINT FOR | | ONE MAIN STEAM LINE." | | END OF TEXT. | | | | THE MISSING FASTENER NUTS WERE FOUND FROM ONE PIPE-RESTRAINT ON A MAIN | | STEAM LINE OUTSIDE OF CONTAINMENT. THE HIGH-ENERGY LINE BREAK ANALYSIS | | ASSUMES SUPPORTS TO PREVENT PIPE-WHIP. THE MSL WAS DECLARED INOPERABLE BUT | | NO TECHNICAL SPECIFICATION ACTION STATEMENT WAS ENTERED DUE TO THE MODE OF | | OPERATIONS. A MORE DETAILED WALKDOWN OF THE MSLs AND AN ANALYSIS OF THIS | | CONDITION WILL BE PERFORMED. CORRECTIVE ACTIONS WILL BE DETERMINED AND | | AFFECTED PRIOR TO RESTART. THE LICENSEE WILL INFORM THE NRC RESIDENT | | INSPECTOR. | | | | ***UPDATE ON 4/20/94 @ 1701 BY KUEMIN TO GOULD*** THE LICENSEE IS | | RETRACTING THIS EVENT SINCE A FURTHER ENGINEERING EVALUATION OF THE | | CONDITION HAS DETERMINED THAT THE TWO MISSING NUTS WOULD NOT IMPAIR THE | | OPERABILITY OF THE MAIN STEAM LINE OR SYSTEM, THEREFORE THE EVENT IS NOT | | REPORTABLE. THE RI WILL BE INFORMED. REG 3(WRIGHT) WAS NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27125 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HOPE CREEK REGION: 1 |NOTIFICATION DATE: 04/20/94 | |UNIT: [1] [ ] [ ] STATE: NJ |NOTIFICATION TIME: 01:50 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 04/20/94 | +------------------------------------------------+EVENT TIME: 00:05[EDT]| |NRC NOTIFIED BY: JOHN MILLER |LAST UPDATE DATE: 04/20/94 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GENE KELLY 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 +------------------------------------------------------------------------------+ | ENGINEERED SAFETY FEATURES SYSTEM ACTUATION. | | | | WHEN POWER WAS LOST TO THE "B" RPS BUS A "B & D" NSSSS ISOLATION OCCURRED. | | DUE TO THE STATUS OF THE PLANT THIS RESULTED IN CLOSURE OF ONLY THE MSIV | | DRAIN VALVES. THE "B" RPS BUS WAS POWERED FROM THE ALTERNATE SOURCE AT THE | | TIME OF THE ACTUATION. THE ALTERNATE SOURCE TRIPPED ON UNDERVOLTAGE WHEN A | | LARGE MOTOR LOAD WAS STARTED. THE LICENSEE WILL INFORM THE NRC RESIDENT | | INSPECTOR AND LOWER ALLOWAYS CREEK TOWNSHIP. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27126 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HARRIS REGION: 2 |NOTIFICATION DATE: 04/20/94 | |UNIT: [1] [ ] [ ] STATE: NC |NOTIFICATION TIME: 10:45 [ET]| |RX TYPE: [1] W-3-LP |EVENT DATE: 04/20/94 | +------------------------------------------------+EVENT TIME: 05:55[EDT]| |NRC NOTIFIED BY: BILLY CASE |LAST UPDATE DATE: 04/20/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |PAUL FREDRICKSON RDO | |DDDD 73.71 UNSPECIFIED PARAGRAPH | | |NINF INFORMATION ONLY | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | ATTEMPTED INTRODUCTION OF CONTRABAND INTO PROTECTED AREA. | | | | A LOADED REVOLVER WAS FOUND IN THE LUNCH BOX OF A CONTRACT WORKER AS HE | | ATTEMPTED TO ENTER THE PROTECTED AREA. THE INDIVIDUAL WAS IMMEDIATELY | | APPREHENDED AND TURNED OVER TO THE WAKE COUNTY SHERIFF'S DEPARTMENT. THE | | LICENSEE BELIEVES THAT THERE WAS NO MALEVOLENT INTENT INVOLVED. THE | | INDIVIDUAL CLAIMS THAT HE FORGOT THAT THE WEAPON WAS IN HIS LUNCH BOX. HIS | | PROTECTED AREA ACCESS HAS BEEN REMOVED. | | | | THE LICENSEE HAS NOTIFIED THE RESIDENT INSPECTOR AND THE REGION II SECURITY | | BRANCH. | | | | SEE HOO LOG FOR ADDITIONAL DETAILS. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27127 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: LIMERICK REGION: 1 |NOTIFICATION DATE: 04/20/94 | |UNIT: [ ] [2] [ ] STATE: PA |NOTIFICATION TIME: 12:42 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 04/20/94 | +------------------------------------------------+EVENT TIME: 11:13[EDT]| |NRC NOTIFIED BY: DELANEY |LAST UPDATE DATE: 04/20/94 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GENE KELLY RDO | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE PLANT ENTERED 12 HR LCO TO BE IN HOT S/D DUE TO CONTAINMENT ISOLATIONS | | WHICH WERE CAUSED BY PERSONNEL ERROR. | | | | THIS OCCURRED WHEN A TECHNICIAN WAS RESTORING A LIFTED LEAD DURING A | | RPS/NSSSS SURVEILLANCE TEST. THE LEAD WAS INADVERTENTLY GROUNDED RESULTING | | IN A BLOWN FUSE. THIS RESULTED IN VARIOUS CONTAINMENT ISOLATIONS AND | | REACTOR ENCLOSURE HVAC ISOLATIONS. ALL SYSTEMS FUNCTIONED AS DESIRED. WITH | | THE OUTBOARD PRIMARY CONTAINMENT ISOLATION VALVES CLOSED THAT PUT THEM IN A | | LCO TO CLOSE THE INBOARD ISOLATION VALVES IN 4 HRS OR BE IN HOT S/D. AT | | 11:15, ISOLATIONS FOR REACTOR ENCLOSURE COOLING WATER, DRYWELL CHILLED | | WATER AND CONTAINMENT INSTRUMENT GAS WERE BYPASSED. THE BLOWN FUSE WAS | | IDENTIFIED AND REPLACED AT 11:30 ALL ISOLATIONS WERE RESET BY 11:47 AND THE | | ISOLATION BYPASSES WERE RESET AT 11:49. THE LCO WAS EXITED WHEN ALL | | CONTAINMENT ISOLATIONS WERE RESET. THE RI WAS INFORMED | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27128 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HADDAM NECK REGION: 1 |NOTIFICATION DATE: 04/20/94 | |UNIT: [1] [ ] [ ] STATE: CT |NOTIFICATION TIME: 14:54 [ET]| |RX TYPE: [1] W-4-LP |EVENT DATE: 04/20/94 | +------------------------------------------------+EVENT TIME: 14:45[EDT]| |NRC NOTIFIED BY: GLADDING |LAST UPDATE DATE: 04/20/94 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GENE KELLY 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 +------------------------------------------------------------------------------+ | THE LICENSEE DISCOVERED THAT A NONCONSERVATIVE CONDITION EXISTED WITH THE | | S/D MONITOR ALARM SETPOINT. | | | | FOLLOWING AN ENGINEERING EVALUATION, IT WAS DISCOVERED THAT A PREVIOUS | | ANALYSIS USED NONCONSERVATIVE ASSUMPTIONS IN DETERMINING THE S/D MONITOR | | ALARM SETPOINT. THIS OCCURRED WHEN THEY CHANGED FUEL SUPPLIERS AND WERE | | RE-EVALUATING THE CALCULATIONS. THEY REVIEWED PAST STARTUP DATA AND | | IDENTIFIED THAT THE 1/M DATA WAS PREVIOUSLY ASSUMED TO BE A LINEAR FUNCTION | | AND THAT ASSUMPTION WAS DETERMINED TO BE IN ERROR OR NON CONSERVATIVE. | | BASED ON CURRENT CORE CONDITIONS, HOWEVER, THIS NOW IS NO LONGER A PROBLEM, | | THEREFORE, NO CORRECTIVE ACTION WILL BE IMPLEMENTED AT THIS TIME. HOWEVER, | | SOME TYPE OF CORRECTIVE ACTION WILL BE REQUIRED PRIOR TO START OF NEXT | | CYCLE. THE RI, STATE AND LOCAL AGENCIES WERE NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |GENERAL INFORMATION or OTHER | |EVENT NUMBER: 27129 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: RIO ALGOM MINING CORP |NOTIFICATION DATE: 04/20/94 | | CITY: LISBON REGION: 4 |NOTIFICATION TIME: 16:28 [ET]| | COUNTY: STATE: UT |EVENT DATE: 04/20/94 | |LICENSE#: SUA1119 AGREEMENT: Y |EVENT TIME: 11:00[MDT]| | DOCKET: |LAST UPDATE DATE: 04/20/94 | | +-----------------------------+ | |PERSON ORGANIZATION| | |LAWRENCE YANDELL RDO | | |ROBERT PIERSON EO | +------------------------------------------------+ | |NRC NOTIFIED BY: FERDINAND | | |HQ OPS OFFICER: CHAUNCEY GOULD | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NINF INFORMATION ONLY | | |JBBE 40.60(b)(2)(i) ACCID MIT EQUIP FAILS | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | RIO ALGOM MINING CORP., LISBON, UTAH. | | THE LICENSEE REPORTED THAT THEY WERE REPAIRING SOME WIND WAVE NOTCH ACTION | | ON THEIR EVAPORATION CELL. WHILE THEY WERE DOING THIS, THEY NOTED THAT THE | | EMBANKMENT ON THE EVAPORATION CELL WAS MORE MOIST THEN THEY ANTICIPATED. | | THE OCCURRENCE OF THIS CONDITION MEANS THAT WATER HAD OVERLAPPED THE TOP OF | | THE EVAPORATION CELL AND THE SOLUTIONS WETTED THE CORE OF THE EMBANKMENT OR | | THEY MAY HAVE ERODED SOME OF THE CLAY AWAY AND THE SOLUTION IN THE | | EVAPORATION CELL MIGRATED INTO THE CORE OF THE EMBANKMENT. THE EVAPORATION | | CELL IS USED TO CLEANUP GROUND WATER CONTAMINATION FROM THEIR MINING | | PROCESSES THROUGH EVAPORATION. THEY WILL TRANSFER ALL THE WATER FROM THIS | | EVAPORATION CELL TO A SECOND CELL SO THAT IT CAN BE INSPECTED FOR CLAY | | EROSION. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27130 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: VERMONT YANKEE REGION: 1 |NOTIFICATION DATE: 04/20/94 | |UNIT: [1] [ ] [ ] STATE: VT |NOTIFICATION TIME: 18:23 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 04/20/94 | +------------------------------------------------+EVENT TIME: 15:21[EDT]| |NRC NOTIFIED BY: HALLONQUIST |LAST UPDATE DATE: 04/20/94 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GENE KELLY 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 +------------------------------------------------------------------------------+ | THE PLANT HAD A GROUP 3 ISOLATION DUE TO SPIKING ON THE "B" REFUEL FLOOR | | RAD MONITOR. | | | | THIS GP3 ISOLATION WAS CAUSE BY A SPURIOUS SIGNAL ON THE "B" REFUEL FLOOR | | RAD MONITOR. THEY PERFORMED A SURVEY IN THE AREA AND READ NORMAL | | BACKGROUND. THE OTHER RAD MONITOR CHANNEL ALSO READ NORMAL. THE GP 3 | | ISOLATION RESULTED IN CLOSURE OF CONTAINMENT ISOLATION VALVES, ISOLATION OF | | THE REACTOR BUILDING SUPPLY AND VENT SYSTEM AND AUTO START OF THE S/B GAS | | TREATMENT SYSTEM. THE "B" RAD MONITOR WAS TAKEN OUT OF SERVICE AND THE | | ISOLATIONS WERE RESET WITHIN 1 HR 24 MINS. THE RI WAS INFORMED AND THE | | STATE WILL BE NOTIFIED. | +------------------------------------------------------------------------------+