U.S. Nuclear Regulatory Commission Operations Center Event Reports For 11/08/95 - 11/09/95 ** EVENT NUMBERS ** 29510 29573 29574 29575 29576 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29510 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: POINT BEACH REGION: 3 |NOTIFICATION DATE: 10/26/95 | |UNIT: [1] [2] [ ] STATE: WI |NOTIFICATION TIME: 10:15 [ET]| |RX TYPE: [1] W-2-LP,[2] W-2-LP |EVENT DATE: 10/26/95 | +------------------------------------------------+EVENT TIME: 08:30[CDT]| |NRC NOTIFIED BY: BRIAN KOPETSKY |LAST UPDATE DATE: 11/08/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GARY SHEAR RDO | |HFIT 26.73 FITNESS FOR DUTY | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | ALCOHOL INADVERTENTLY BROUGHT ONSITE | | | | AT 08:30 CDT, THE LICENSEE DISCOVERED THAT AN INDIVIDUAL HAD INADVERTENTLY | | BROUGHT TWO SMALL (ONE OR ONE AND ONE HALF OUNCE) BOTTLES OF ALCOHOL | | (CURACAO) INTO THE PROTECTED AREA IN A BRIEFCASE ON 10/25/95 BETWEEN THE | | HOURS OF 08:00 CDT AND 16:00 CDT. THIS WAS SELF IDENTIFIED. APPARENTLY, | | THE INDIVIDUAL HAD BEEN TRAVELLING, HAD RECEIVED THE BOTTLES OF ALCOHOL AS | | A GIFT, AND HAD FORGOTTEN THAT THE BOTTLES OF ALCOHOL WERE IN HIS | | BRIEFCASE. THE INDIVIDUAL DISCOVERED THE BOTTLES LAST EVENING AT HOME AND | | BROUGHT IT TO THE ATTENTION OF HIS SUPERVISOR THIS MORNING. | | | | THE LICENSEE WILL NOTIFY THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE AT 1209 ON 11/08/95 BY KOPETSKY ENTERED BY HOO JOLLIFFE * * * | | | | LICENSEE DESIRES TO RETRACT THIS EVENT SINCE THE INDIVIDUAL INVOLVED WAS | | NOT LICENSED PER THE REQUIREMENTS OF 10CFR55 AND WAS NOT A SUPERVISOR. | | | | LICENSEE PLANS TO INCLUDE THIS EVENT AS A LOGGABLE EVENT IN ITS NEXT | | SEMIANNUAL FITNESS FOR DUTY REPORT SUBMITTED TO THE NRC. | | | | LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | | | | HOO NOTIFIED R3DO JOHN JACOBSON. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29573 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 11/08/95 | |UNIT: [1] [ ] [ ] STATE: CT |NOTIFICATION TIME: 10:38 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 11/08/95 | +------------------------------------------------+EVENT TIME: 10:35[EST]| |NRC NOTIFIED BY: DONOVAN |LAST UPDATE DATE: 11/08/95 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN KINNEMAN RDO | |AOUT 50.72(b)(1)(ii)(B) OUTSIDE DESIGN BASIS | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 CLOSED COOLING WATER (RBCCW) SYSTEM FLOW RATE EXCEEDED THE | | DESIGN FLOW RATE THROUGH THE SHUTDOWN COOLING HEAT EXCHANGERS (SD HXs). | | | | RBCCW FLOW TO THE SHUTDOWN COOLING SYSTEM HXs EXCEEDED DESIGN FLOW RATE | | THROUGH THE SHUTDOWN COOLING HXs. DESIGN FLOW RATE PER HX IS 1800 gpm. | | DURING TESTING OF THE FLOW INSTRUMENTATION IT WAS FOUND THAT SHUTDOWN | | COOLING HEAT EXCHANGER "A" HAD A RBCCW FLOW RATE THROUGH IT OF 2500 gpm AND | | SHUTDOWN COOLING HEAT EXCHANGER "B" HAD A RBCCW FLOW RATE THROUGH IT OF | | 2700 gpm. LICENSEE WAS TESTING THE FLOW INSTRUMENTATION TO FIND OUT THE | | FLOW RATES FOR A SUBMITTAL OF A NEW SHUTDOWN COOLING TECHNICAL | | SPECIFICATION REGARDING SPENT FUEL POOL COOLING. IMMEDIATE CORRECTIVE | | ACTION WAS TO REDUCED RBCCW FLOW RATE THROUGH EACH HX TO 1800 gpm. LONG | | TERM CORRECTIVE ACTION WILL BE TO SEE IF ANY DAMAGE WAS WAS DONE TO THE HX | | TUBES. LICENSEE NOTIFIED STATE AND LOCAL OFFICIALS OF THIS EVENT. | | | | RESIDENT INSPECTOR WAS INFORMED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29574 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: FT CALHOUN REGION: 4 |NOTIFICATION DATE: 11/08/95 | |UNIT: [1] [ ] [ ] STATE: NE |NOTIFICATION TIME: 16:02 [ET]| |RX TYPE: [1] CE |EVENT DATE: 11/08/95 | +------------------------------------------------+EVENT TIME: 14:08[CST]| |NRC NOTIFIED BY: O'CONNER |LAST UPDATE DATE: 11/08/95 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CHARLES CAIN RDO | |AOUT 50.72(b)(1)(ii)(B) OUTSIDE DESIGN BASIS | | |ACNC 50.72(b)(1)(ii)(C) COND OUTSIDE EOPS | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | GENERAL ELECTRIC RMS-9 TRIP UNITS ARE SUBJECT TO SPURIOUS TRIPPING. | | | | ABOUT THREE YEARS AGO GENERAL ELECTRIC RMS-9 TRIP UNITS WERE INSTALLED ON | | THE 480V CIRCUIT BREAKERS WHICH REPLACED ALL THE OIL DASH POT TRIP UNITS. | | IT HAS BEEN DETERMINED THAT THE RMS-9 TRIP UNITS ARE SUBJECT TO SPURIOUS | | TRIPPING. THE SPURIOUS BREAKER TRIPS ARE BELIEVED TO BE CAUSED BY GROUNDS | | ON THE 480V 3-PHASE FLOATING DELTA SYSTEMS INDUCING NOISE ON THE 480V | | SYSTEM. | | THE BREAKER TRIPPING IS A RESULT OF THE RMS-9's APPARENTLY OVER SENSITIVITY | | TO SHORT DURATION CURRENT SPIKES (ON THE ORDER OF 100 MICROSECONDS) ON THE | | INPUTS TO THE RMS-9's. THE NOISE SPIKES ARE BEING INTERPRETED BY THE | | RMS-9's AS OVERCURRENT CONDITIONS THAT REQUIRE A BREAKER TRIP. | | GROUNDS ON THE 480V SYSTEM ARE POSSIBLE FROM EQUIPMENT LOCATED IN | | CONTAINMENT OR ROOM 81 THAT IS 1) NOT ELECTRICAL EQUIPMENT QUALIFICATION | | PROGRAM QUALIFIED, AND 2) THAT IS NOT NORMALLY OFF OR THAT IS NOT LOAD SHED | | IN DESIGN BASIS ACCIDENT (DBA). THESE LOADS COULD ACT AS THE SOURCE OR | | PROPAGATOR OF A 480V SYSTEM GROUND. THIS CONDITION HAS BEEN DETERMINED TO | | BE OUTSIDE THE DESIGN BASIS OF THE PLANT. ACTIONS BEING TAKEN TO REDUCE THE | | POTENTIAL FOR GROUND INDUCED TRIPS INCLUDE: | | 1. TAGGING OPEN LOADS WHICH HAVE BEEN IDENTIFIED THAT WOULD CONTRIBUTE TO | | THIS PROBLEM (ie. WELDING RECEPTACLES). | | 2. PROVIDE OPERATOR GUIDANCE TO DISCONNECT CERTAIN LOADS DURING A DBA. | | 3. INCREASE OPERATOR AWARENESS OF THIS SITUATION. | | 4. A MODIFICATION HAS BEEN INITIATED TO REVIEW THIS CONDITION WITH THE | | RMS-9 TRIP UNITS. | | | | RESIDENT INSPECTOR WAS INFORMED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29575 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MONTICELLO REGION: 3 |NOTIFICATION DATE: 11/08/95 | |UNIT: [1] [ ] [ ] STATE: MN |NOTIFICATION TIME: 16:42 [ET]| |RX TYPE: [1] GE-3 |EVENT DATE: 11/08/95 | +------------------------------------------------+EVENT TIME: 13:40[CST]| |NRC NOTIFIED BY: ELLIS PFEFFER |LAST UPDATE DATE: 11/08/95 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN JACOBSON 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 Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LICENSEE INTENDS TO NOTIFY THE MINNESOTA STATE POLLUTION CONTROL AGENCY | | THAT THEY EXCEEDED THE 5 DEGREE F PER HOUR DISCHARGE CANAL RATE OF | | TEMPERATURE INCREASE LIMIT BY 1 DEGREE F WHEN THEY REMOVED 1 OF 2 COOLING | | TOWERS (#11) FROM SERVICE. LICENSEE DETERMINED THAT NO FISH WERE KILLED | | AS A RESULT OF THIS RAPID DISCHARGE TEMPERATURE INCREASE. | | | | LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29576 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BROWNS FERRY REGION: 2 |NOTIFICATION DATE: 11/08/95 | |UNIT: [ ] [ ] [3] STATE: AL |NOTIFICATION TIME: 17:37 [ET]| |RX TYPE: [1] GE-4,[2] GE-4,[3] GE-4 |EVENT DATE: 11/08/95 | +------------------------------------------------+EVENT TIME: 13:57[CST]| |NRC NOTIFIED BY: NACOSTE |LAST UPDATE DATE: 11/08/95 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | | | | | 3 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | - ESF ACTUATIONS DUE TO Rx MOV BOARD FAILING TO TRANSFER TO NORMAL SUPPLY - | | | | DURING MAINTENANCE ACTIVITIES, 480 VAC REACTOR MOTOR OPERATED VALVE (MOV) | | BOARD #3B FAILED TO TRANSFER FROM ITS ALTERNATE SUPPLY TO ITS NORMAL | | SUPPLY, AS EXPECTED. THIS DEENERGIZED REACTOR MOV BOARD #3B WHICH | | DEENERGIZED REACTOR PROTECTION SYSTEM BUS 'B' WHICH STARTED THE CONTROL | | ROOM EMERGENCY VENTILATION SYSTEM AND THE SBGT SYSTEM AND ISOLATED | | PCIS GROUP 2 (RHR SYSTEM AND DRYWELL SUMP OUTBOARD ISOLATION VALVES), | | GROUP 3 (RWCU SYSTEM), AND GROUP 6 (REACTOR BUILDING VENTILATION SYSTEM). | | | | LICENSEE RESET ALL SYSTEMS TO NORMAL BY 1430 (CST). | | | | LICENSEE IS INVESTIGATING THE CAUSE OF THE FAILURE TO TRANSFER. | | | | LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+