U.S. Nuclear Regulatory Commission Operations Center Event Reports For 03/15/96 - 03/18/96 ** EVENT NUMBERS ** 30113 30114 30115 30116 30117 30118 30119 30120 30121 30122 30123 30124 30125 30126 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30113 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: QUAD CITIES REGION: 3 |NOTIFICATION DATE: 03/15/96 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 05:56 [ET]| |RX TYPE: [1] GE-3,[2] GE-3 |EVENT DATE: 03/15/96 | +------------------------------------------------+EVENT TIME: 03:40[CST]| |NRC NOTIFIED BY: ED KLUNDT |LAST UPDATE DATE: 03/15/96 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WAYNE KROPP 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 +------------------------------------------------------------------------------+ | ESF ACTUATION | | | | WHILE HANGING A TAGOUT, THE LICENSEE CAUSED A REACTOR BUILDING VENTILATION | | ISOLATION AND STANDBY GAS TREATMENT START. A UNIT 1 CHANNEL "A" RPS | | BREAKER WAS OPENED AS PART OF THE TAGOUT AND CAUSED THE ESF ACTUATION. THE | | RESPONSE WAS CORRECT FOR THE BREAKER THAT WAS OPENED, BUT WAS NOT EXPECTED. | | THE LICENSEE IS INVESTIGATING A POSSIBLE ERROR IN THE DEVELOPMENT OR | | EXECUTION OF THE TAGOUT. | | | | ALL SYSTEMS WERE RESTORED WITHIN ABOUT 30 MINUTES. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30114 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SURRY REGION: 2 |NOTIFICATION DATE: 03/15/96 | |UNIT: [1] [2] [ ] STATE: VA |NOTIFICATION TIME: 07:56 [ET]| |RX TYPE: [1] W-3-LP,[2] W-3-LP |EVENT DATE: 03/15/96 | +------------------------------------------------+EVENT TIME: 07:09[EST]| |NRC NOTIFIED BY: WILLIAM GOODHOPE |LAST UPDATE DATE: 03/15/96 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |THOMAS PEEBLES RDO | |AARC 50.72(b)(1)(v) OTHER ASMT/COMM INOP | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | EMERGENCY RESPONSE COMPUTER SYSTEM INOPERABLE (ERFCS) | | | | THE ERFCS WAS INOPERABLE FROM 0442 UNTIL 0739. THE CONDITION WAS | | DISCOVERED AT 0709. THE LOSS OF THIS COMPUTER SYSTEM IS CONSIDERED A MAJOR | | LOSS OF ASSESSMENT CAPABILITY AS THIS SYSTEM PROVIDES REMOTE MONITORING | | CAPABILITY OF PLANT DATA. THE CAUSE OF THE LOSS OF THE COMPUTER IS UNDER | | INVESTIGATION. THE COMPUTER WAS RESTORED BY REINITIALIZATION | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30115 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: LIMERICK REGION: 1 |NOTIFICATION DATE: 03/15/96 | |UNIT: [ ] [2] [ ] STATE: PA |NOTIFICATION TIME: 11:48 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 03/15/96 | +------------------------------------------------+EVENT TIME: 09:12[EST]| |NRC NOTIFIED BY: BRAUN |LAST UPDATE DATE: 03/15/96 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |RICHARD BARKLEY 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 Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE PLANT HAD AN INADVERTENT TRIP OF THE RPS/UPS POWER MONITORING SERIES | | BREAKER. | | | | THIS TRIP RESULTED IN A "2B" CHANNEL HALF SCRAM AND AUTOMATIC ISOLATIONS OF | | THE DRYWELL CHILLED WATER, INSTRUMENT GAS, REACTOR ENCLOSURE COOLING WATER, | | DRYWELL ATMOSPHERIC SAMPLING, AND SUPPRESSION POOL CLEANUP SYSTEMS. OTHER | | SYSTEMS(PROCESS SAMPLING, RHR S/D COOLING, POST LOCA RECOMBINER, TIP PURGE, | | & DRYWELL DRAIN TANKS) RECEIVED ISOLATION SIGNALS WITH NO VALVE MOTION | | SINCE THEY WERE OUT OF SERVICE WITH THEIR VALVES CLOSED. ADDITIONAL | | SYSTEMS(REACTOR ENCLOSURE VENTILATION/UNIT 1 & UNIT 2, REACTOR ENCLOSURE | | RECIRCULATION/UNIT 1 & UNIT 2, REFUEL FLOOR VENTILATION/UNIT 1 & UNIT 2, | | STANDBY GAS TREATMENT, RWCU, AND CONTAINMENT VENT & PURGE) ALSO RECEIVED | | INITIATION/ISOLATION SIGNALS. ALL SYSTEMS FUNCTIONED AS DESIGNED. | | TROUBLESHOOTING REVEALED THAT THE CAUSE WAS THE RESULT OF HOUSEKEEPING | | ACTIVITIES IN PROGRESS AT THE TIME, BUT THEY ARE STILL INVESTIGATING. THE | | BREAKER WAS CLOSED AND THE HALF SCRAM AND ISOLATIONS WERE RESET. SYSTEM | | RESTORATION IS ONGOING. | | | | THE RI WAS INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |GENERAL INFORMATION or OTHER | |EVENT NUMBER: 30116 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: NUCLEAR METALS, INC |NOTIFICATION DATE: 03/15/96 | | CITY: CONCORD REGION: 1 |NOTIFICATION TIME: 15:47 [ET]| | COUNTY: STATE: MA |EVENT DATE: 03/15/96 | |LICENSE#: SMB-179 AGREEMENT: N |EVENT TIME: 00:00[EST]| | DOCKET: 04000672 |LAST UPDATE DATE: 03/15/96 | | +-----------------------------+ | |PERSON ORGANIZATION| | | | | | | +------------------------------------------------+ | |NRC NOTIFIED BY: VUMBACO |RAMSEY NMSS | |HQ OPS OFFICER: BOB STRANSKY | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |CDEG 21.21(c)(3)(i) DEFECTS/NONCOMPLIANCE | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LICENSEE SUBMITTED PART 21 REPORT REGARDING DEFECTIVE THERMOCOUPLE WHICH | | CAUSED FIRE AT A FACILITY ON 2/21/96 (SEE EVENT REPORT 30029). | | | | THE LICENSEE'S ROOT-CAUSE INVESTIGATION OF A FIRE AT THE FACILITY | | DETERMINED THAT A TYPE-J THERMOCOUPLE MANUFACTURED FOR SONODYNE INDUSTRIES | | BY GULTON INDUSTRIES WAS MANUFACTURED WITH REVERSE POLARITY. THE INCORRECT | | MANUFACTURE CAUSED THE THERMOCOUPLE TO BEHAVE ERRATICALLY AND RESULTED IN | | THE INDICATED PROCESS TEMPERATURE DECREASING AS ACTUAL TEMPERATURE | | INCREASED. THE THERMOCOUPLE WAS PURCHASED IN 1985 THROUGH CARLSON CORP. OF | | COCHITUATE, MA (A GENERAL CONTRACTOR). THE LICENSEE REPORTED THAT SONODYNE | | INDUSTRIES IS NO LONGER IN BUSINESS AND GULTON INDUSTRIES NO LONGER MAKES | | THERMOCOUPLES. | | | | COPY OF REPORT TRANSMITTED TO K. RAMSEY (NMSS) VIA FAX. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30117 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MAINE YANKEE REGION: 1 |NOTIFICATION DATE: 03/15/96 | |UNIT: [1] [ ] [ ] STATE: ME |NOTIFICATION TIME: 18:27 [ET]| |RX TYPE: [1] CE |EVENT DATE: 03/15/96 | +------------------------------------------------+EVENT TIME: 18:17[EST]| |NRC NOTIFIED BY: EBERT |LAST UPDATE DATE: 03/15/96 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BARKLEY 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 Y 90 POWER OPERATION | 90 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | BLOCK WALL DOES NOT MEET SEISMIC REQUIREMENTS. | | | | THE FOLLOWING IS TEXT OF A FACSIMILE SUBMITTED BY THE LICENSEE: | | | | "AS A RESULT OF RECENT WORK IN THE AREA OF A NON-LOAD BEARING CONCRETE | | BLOCK WALL WHOSE FUNCTION IS TO SHIELD VENTILATION FILTERS, IT WAS | | DETERMINED THAT THE BLOCK WALL WAS NOT FILLED WITH CONCRETE AS REQUIRED BY | | THE PLANT'S DESIGN BASIS. ALTHOUGH THE WALL IS NOT LOAD BEARING, IT IS | | REQUIRED TO WITHSTAND A SEISMIC EVENT DUE TO THE PRESENCE OF SAFETY CLASS | | PIPING IN THE VICINITY OF THE WALL WHICH COULD BE AFFECTED BY ITS COLLAPSE. | | ONE OF THE SEISMIC DESIGN FEATURES OF THE WALL IS THE CONCRETE FILL. | | | | THE ONLY SAFETY CLASS PIPE IN THE VICINITY OF THE WALL THAT IS RELATED TO | | ACCIDENT MITIGATION IS A 2-INCH POST ACCIDENT HYDROGEN PURGE LINE. | | ADMINISTRATIVE CONTROLS ARE BEING PLACED ON THE MANUALLY ACTUATED POST | | ACCIDENT HYDROGEN PURGE SYSTEM TO ENSURE ITS INTEGRITY BEFORE IT IS PLACED | | IN SERVICE. IN ADDITION, A CONTINGENCY PLAN IS BEING IMPLEMENTED WHICH | | WILL PROVIDE FOR BYPASSING THE AFFECTED SECTION OF THE PIPE SHOULD A | | SEISMIC EVENT OCCUR AND THE LINE FAIL. | | | | SIMILAR BLOCK WALLS ARE BEING CHECKED TO ENSURE THAT THE CONDITION DOES NOT | | EXIST AT OTHER LOCATIONS." | | | | THE NRC RESIDENT INSPECTOR WILL BE INFORMED OF THIS EVENT BY THE LICENSEE. | | | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30118 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 03/15/96 | |UNIT: [ ] [2] [ ] STATE: CT |NOTIFICATION TIME: 19:09 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 03/15/96 | +------------------------------------------------+EVENT TIME: 19:09[EST]| |NRC NOTIFIED BY: SUDIGALA |LAST UPDATE DATE: 03/15/96 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BARKLEY 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | WIDE RANGE NUCLEAR INSTRUMENTS DECLARED INOPERABLE. | | | | THE LICENSEE HAS DECLARED ALL FOUR CHANNELS OF THE WIDE RANGE NUCLEAR | | INSTRUMENTATION INOPERABLE DUE TO CONCERNS ABOUT CHANNEL SEPARATION. A | | CABLE WHICH SUPPLIES ANNUNCIATORS RELATED TO THE WIDE RANGE INSTRUMENTS | | DAISY-CHAINS THROUGH ALL FOUR INSTRUMENT CHANNELS. THE INSTRUMENTS ARE | | FUNCTIONING CORRECTLY AT THIS TIME. THE LICENSEE INTENDS TO DEENERGIZE THE | | INSTRUMENTS TO DETERMINE WHETHER A DESIGN CHANGE IS NECESSARY. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED OF THIS EVENT BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30119 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HADDAM NECK REGION: 1 |NOTIFICATION DATE: 03/16/96 | |UNIT: [1] [ ] [ ] STATE: CT |NOTIFICATION TIME: 10:34 [ET]| |RX TYPE: [1] W-4-LP |EVENT DATE: 03/16/96 | +------------------------------------------------+EVENT TIME: 10:15[EST]| |NRC NOTIFIED BY: JACK STANFORD |LAST UPDATE DATE: 03/16/96 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |RICHARD BARKLEY RDO | |ASHU 50.72(b)(1)(i)(A) PLANT S/D REQD BY TS | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 56 POWER OPERATION | 56 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE IS SHUTTING DOWN PER THE REQUIREMENTS OF TECH SPEC SECTION | | 3.0.3 DUE TO DISCOVERY OF A SCENARIO WHICH COULD RENDER EMERGENCY CORE | | COOLING INOPERABLE. | | | | AN ENGINEERING EVALUATION REVEALED THAT DURING A LARGE BREAK LOSS OF | | COOLANT ACCIDENT WITH THE LOSS OF CONTROL AIR AND ONE CHARGING PUMP, THE | | OTHER CHARGING PUMP MAY FAIL DUE TO CAVITATION. THE LICENSEE IS REWRITING | | THEIR EMERGENCY PROCEDURES, AND IS SHUTTING DOWN AT ONE MW PER MINUTE. THE | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE 1512 3/16/96 FROM HOUFF TAKEN BY STRANSKY * * * | | | | THE LICENSEE HAS STOPPED THE UNIT SHUTDOWN, AND WILL BE RETURNING TO 100% | | POWER. THE LICENSEE COMPLETED THE ENGINEERING ANALYSIS OF THIS CONDITION, | | AND HAS UPDATED THE EMERGENCY OPERATING PROCEDURES. REACTOR POWER HAD BEEN | | REDUCED TO 17%. THE NRC RESIDENT INSPECTOR WILL BE INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30120 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 03/16/96 | |UNIT: [ ] [3] [ ] STATE: NY |NOTIFICATION TIME: 17:37 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 03/16/96 | +------------------------------------------------+EVENT TIME: 13:43[EST]| |NRC NOTIFIED BY: SMYERS |LAST UPDATE DATE: 03/16/96 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BARKLEY 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 +------------------------------------------------------------------------------+ | AUTOMATIC START OF AUXILIARY FEEDWATER PUMP MOTOR DURING MAINTENANCE | | | | WHILE PREPARING TO PERFORM A ROTATIONAL CHECK ON THE MOTOR FOR AUXILIARY | | FEEDWATER PUMP #33, THE MOTOR STARTED UNEXPECTEDLY. THE MOTOR HAD BEEN | | DISCONNECTED FROM THE PUMP FOR MAINTENANCE ACTIVITIES, AND THE CONTROL | | SWITCH FOR THE MOTOR HAD BEEN PLACED IN PULL-TO-LOCK. STEAM GENERATORS #31 | | AND #32 HAD BEEN DRAINED FOR UNRELATED MAINTENANCE ACTIVITIES. WHEN THE | | CONTROL SWITCH FOR FEEDWATER PUMP #33 WAS PLACED IN AUTOMATIC, AN AUTOMATIC | | START OF THE PUMP MOTOR OCCURRED DUE TO THE VALID LOW-LOW STEAM GENERATOR | | LEVELS. NO PERSONNEL INJURIES OCCURRED AS A RESULT OF THIS EVENT. THE | | LICENSEE SECURED THE PUMP MOTOR. | | | | THE NRC RESIDENT INSPECTOR WILL BE INFORMED OF THIS EVENT BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30121 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OCONEE REGION: 2 |NOTIFICATION DATE: 03/16/96 | |UNIT: [ ] [ ] [3] STATE: SC |NOTIFICATION TIME: 21:48 [ET]| |RX TYPE: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP |EVENT DATE: 03/16/96 | +------------------------------------------------+EVENT TIME: 13:18[EST]| |NRC NOTIFIED BY: OWENS |LAST UPDATE DATE: 03/16/96 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |PEEBLES RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | | | | | 3 | A/R Y 100 POWER OPERATION | 0 HOT SHUTDOWN | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | AUTOMATIC REACTOR TRIP DUE TO TRIP OF BOTH FEEDWATER PUMPS | | | | THE FOLLOWING IS TEXT OF A FACSIMILE SUBMITTED BY THE LICENSEE: | | "AT 1318, THE UNIT 3 REACTOR TRIPPED DUE TO AN ANTICIPATORY TRIP DUE TO A | | LOSS OF BOTH FEEDWATER PUMPS. LOSS OF BOTH FEEDWATER PUMPS WAS A RESULT OF | | LOSING ONE HOTWELL PUMP AND ONE CONDENSATE BOOSTER PUMP. THESE PUMPS | | TRIPPED UNEXPECTEDLY WHILE PERFORMING A DEGRADED GRID, SWITCHYARD ISOLATION | | AND KEOWEE OVER FREQUENCY PROTECTION FUNCTIONAL TEST (PT/0/A/0610/22). [ALL | | CONTROL RODS INSERTED FOLLOWING THE REACTOR TRIP.] THE REACTOR COOLANT | | PUMPS WERE LOST AS A RESULT OF THEIR CONTROL SWITCH TRANSFER SWITCHES BEING | | IN MANUAL AS PART OF THE TEST. | | | | "REACTOR COOLANT PUMPS HAVE BEEN RESTARTED AND THE REACTOR COOLANT SYSTEM | | IS STABLE AT HOT SHUTDOWN ON FORCED CIRCULATION. AUXILIARY FEEDWATER IS | | PRESENTLY BEING USED TO REMOVE DECAY HEAT. AN INVESTIGATION IS UNDERWAY TO | | DETERMINE THE CAUSE OF THE TRIP. SOME GASKETS IN THE FEEDWATER SYSTEM | | DEVELOPED LEAKS AS A RESULT OF CONDENSATE BOOSTER PUMPS AND HOTWELL PUMPS | | STOPPING AND RESTARTING WITHOUT FLOW BEING THROTTLED." | | | | THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30122 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: ZION REGION: 3 |NOTIFICATION DATE: 03/17/96 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 00:40 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 03/16/96 | +------------------------------------------------+EVENT TIME: 22:56[CST]| |NRC NOTIFIED BY: CHARLES WINTER |LAST UPDATE DATE: 03/17/96 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WAYNE KROPP 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 20 POWER OPERATION | 0 HOT STANDBY | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | TURBINE TRIP AND REACTOR TRIP DUE TO HIGH LEVEL IN THE "C" STEAM GENERATOR. | | | | AT 2215 CST THE UNIT WAS PUT ON LINE AND POWER INCREASED IN ACCORDANCE WITH | | OPERATING PROCEDURES. THE "C" STEAM GENERATOR'S FEED WATER REGULATING | | VALVE WAS DIFFICULT TO CONTROL AND THE "C" STEAM GENERATOR REACHED ITS HIGH | | LEVEL SET POINT. THE TURBINE TRIPPED AND THE REACTOR TRIPPED. ALL CONTROL | | RODS INSERTED FULLY FOLLOWING THE TRIP. DECAY HEAT REMOVAL IS VIA STEAM | | DUMPS TO THE MAIN CONDENSER. AUXILIARY FEED WATER WAS MANUALLY INITIATED | | IN ANTICIPATION OF AUTO START. THE LICENSEE INFORMED THE NRC RESIDENT | | INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30123 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OCONEE REGION: 2 |NOTIFICATION DATE: 03/17/96 | |UNIT: [ ] [ ] [3] STATE: SC |NOTIFICATION TIME: 06:18 [ET]| |RX TYPE: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP |EVENT DATE: 03/17/96 | +------------------------------------------------+EVENT TIME: 04:58[EST]| |NRC NOTIFIED BY: FRED OWENS |LAST UPDATE DATE: 03/17/96 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |THOMAS PEEBLES RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | | | | | 3 | A N 0 HOT SHUTDOWN | 0 HOT SHUTDOWN | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | SPURIOUS TRIP OF RPS CHANNELS POSSIBLY DUE TO INSTRUMENTATION NOISE. | | | | RPS CHANNELS "A,B, AND C" TRIPPED ON FLUX/IMBALANCE/FLOW WHEN REACTOR | | COOLANT PUMP "3B1" WAS MANUALLY TRIPPED. THE CONTROL RODS WERE FULLY | | INSERTED PRIOR TO THE RPS ACTUATION (SEE EVENT 30121); THEREFORE, THERE WAS | | NO CONTROL ROD MOTION. THE LICENSEE SUSPECTS THE RPS ACTUATION WAS CAUSED | | BY NOISE IN THE FLUX INSTRUMENTATION IN EACH OF THE THREE CHANNELS. THE | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30124 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: COOK REGION: 3 |NOTIFICATION DATE: 03/17/96 | |UNIT: [1] [ ] [ ] STATE: MI |NOTIFICATION TIME: 19:10 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 03/17/96 | +------------------------------------------------+EVENT TIME: 15:27[EST]| |NRC NOTIFIED BY: DEPUYDT |LAST UPDATE DATE: 03/17/96 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |KROPP 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 STANDBY | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | AUTOMATIC REACTOR TRIP DUE TO LOW FEEDWATER FLOW COINCIDENT WITH LOW S/G | | LEVEL | | | | WITH THE UNIT OPERATING AT 100% POWER, THE MAIN FEEDWATER DIFFERENTIAL | | PRESSURE CONTROLLER (1-RU-5) FAILED, RESULTING IN A RAPID SPEED REDUCTION | | IN BOTH MAIN FEEDWATER PUMPS, AND A DECREASE IN FEEDWATER FLOW. CONTROL | | ROOM OPERATORS TOOK MANUAL CONTROL OF THE MAIN FEEDWATER PUMPS, AND | | MANUALLY STARTED THE TURBINE DRIVEN AUXILIARY FEEDWATER PUMP, BUT WERE NOT | | ABLE TO INCREASE FLOW SUFFICIENTLY TO PREVENT A LOW LEVEL IN THE #4 STEAM | | GENERATOR. | | | | THE REACTOR AUTOMATICALLY TRIPPED DUE TO LOW FEEDWATER FLOW COINCIDENT WITH | | LOW STEAM GENERATOR LEVEL. ALL CONTROL RODS INSERTED FOLLOWING THE TRIP. | | OPERATORS MANUALLY OPENED A PRESSURIZER SPRAY VALVE WHICH FAILED TO RESPOND | | TO AN AUTOMATIC SIGNAL. NO PRIMARY SAFETY VALVES LIFTED; HOWEVER, ONE | | SECONDARY SAFETY VALVE DID LIFT. ALL OTHER SYSTEMS FUNCTIONED AS EXPECTED. | | | | THE LICENSEE PLANS TO TROUBLESHOOT THE PRESSURE CONTROLLER BEFORE | | RESTARTING THE UNIT. THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED BY THE | | LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30125 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BRUNSWICK REGION: 2 |NOTIFICATION DATE: 03/17/96 | |UNIT: [1] [2] [ ] STATE: NC |NOTIFICATION TIME: 19:32 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 03/17/96 | +------------------------------------------------+EVENT TIME: 18:34[EST]| |NRC NOTIFIED BY: WILLIAMS |LAST UPDATE DATE: 03/17/96 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |PEEBLES RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |ZWOLINSKI EO | |ASHU 50.72(b)(1)(i)(A) PLANT S/D REQD BY TS |AUSTIN 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 | | 2 | N Y 60 POWER OPERATION | 60 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | BOTH UNITS BEING SHUT DOWN AFTER ALL SERVICE WATER PUMPS DECLARED | | INOPERABLE | | | | AT 1834 ON 3/17/96, THE LICENSEE COMMENCED A SHUTDOWN OF UNIT 2 AFTER | | ADMINISTRATIVELY DECLARING ALL SERVICE WATER PUMPS INOPERABLE. THIS ACTION | | WAS TAKEN DUE TO THE DISCOVERY OF GALVANIC CORROSION ON A PUMP IMPELLER | | RETAINING RING BOLT FOLLOWING THE FAILURE OF THE '2A' NUCLEAR SERVICE WATER | | PUMP. SIMILAR CORROSION WAS ALSO FOUND ON THE '1B' CONVENTIONAL SERVICE | | WATER AND '1B' NUCLEAR SERVICE WATER PUMPS. THE LICENSEE WILL COMMENCE A | | SHUTDOWN OF UNIT 1 AT 2130 THIS EVENING. BOTH UNITS WILL BE TAKEN TO COLD | | SHUTDOWN. AT THIS TIME, ALL OPERATING SERVICE WATER PUMPS ARE FUNCTIONING | | WITHIN NOMINAL PARAMETERS. | | | | AT 1920 ON 3/17/96, AN UNUSUAL EVENT WAS DECLARED AS A DISCRETIONARY ACTION | | IN RESPONSE TO THIS EVENT. THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED BY | | THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30126 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: FT CALHOUN REGION: 4 |NOTIFICATION DATE: 03/18/96 | |UNIT: [1] [ ] [ ] STATE: NE |NOTIFICATION TIME: 04:24 [ET]| |RX TYPE: [1] CE |EVENT DATE: 03/18/96 | +------------------------------------------------+EVENT TIME: 01:15[CST]| |NRC NOTIFIED BY: SCOTT LINDQUIST |LAST UPDATE DATE: 03/18/96 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WILLIAM JOHNSON 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 HOT SHUTDOWN | 0 HOT SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | A CONTAINMENT PURGE HAD RECENTLY BEEN STARTED WHEN A VENTILATION ACTUATION | | ISOLATION ON HIGH STACK RADIATION OCCURRED. | | | | THE PURGE WAS STOPPED WHEN RAD MONITOR RMO 52 READ 20,315 COUNTS PER | | MINUTE. THE SET POINT IS 20,300 CPM. RMO 62 ALSO SHOWED AN INCREASED | | COUNT RATE. THE PURGE ISOLATION SET POINT IS AT 15% BELOW THE 10CFR20 | | INSTANTANEOUS RELEASE LIMIT, THEREFORE, NO PART 20 LIMITS AT THE SITE | | BOUNDARY WERE EXCEEDED. CONTAINMENT AREA AND PROCESS MONITORS REMAINED | | CONSTANT THROUGHOUT THE EVENT. THE LICENSEE WILL TAKE CONTAINMENT AIR | | SAMPLES AND WILL INVESTIGATE THE CAUSE OF THE INCREASED COUNT RATE. THE | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+