U.S. Nuclear Regulatory Commission Operations Center Event Reports For 08/26/94 - 08/29/94 ** EVENT NUMBERS ** 27716 27717 27718 27719 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27716 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: WATERFORD REGION: 4 |NOTIFICATION DATE: 08/26/94 | |UNIT: [3] [ ] [ ] STATE: LA |NOTIFICATION TIME: 01:44 [ET]| |RX TYPE: [3] CE |EVENT DATE: 08/25/94 | +------------------------------------------------+EVENT TIME: 23:32[CDT]| |NRC NOTIFIED BY: ESQUIVER / WALSH |LAST UPDATE DATE: 08/26/94 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |LAWRENCE YANDELL 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 3 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | - LOSS OF SPD, PMC, AND COLS COMPUTER SYSTEMS FOR LONGER THAN 1 HOUR - | | | | AT 2332 (CDT) ON 08/25/94, THE PLANT LOST THE SAFETY PARAMETER DISPLAY | | (SPD) SYSTEM FOR UNKNOWN REASONS. | | | | AT 2344 (CDT) ON 08/25/94, THE PLANT LOST THE PLANT MONITORING COMPUTER | | (PMC), 'A' COMPLEX, FOR UNKNOWN REASONS. THIS CAUSED A LOSS OF THE CORE | | OPERATING LIMIT SUPERVISORY (COLS) SYSTEM SINCE THE PMC, 'B' COMPLEX WAS | | INOPERABLE, AT THE TIME. | | | | TECH SPEC LCO A/S 3.2.1 AND 3.2.4 REQUIRE LICENSEE TO RESTORE THE COLS | | SYSTEM TO OPERABLE STATUS WITHIN 4 HOURS OR REDUCE POWER TO LOWER THE | | DNBR AND LINEAR HEAT RATE LEVELS TO ACCEPTABLE LIMITS. | | | | PLANT TECHNICIANS ARE TROUBLESHOOTING THE SYSTEMS. | | | | LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27717 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: FERMI REGION: 3 |NOTIFICATION DATE: 08/26/94 | |UNIT: [2] [ ] [ ] STATE: MI |NOTIFICATION TIME: 19:43 [ET]| |RX TYPE: [2] GE-4 |EVENT DATE: 08/26/94 | +------------------------------------------------+EVENT TIME: 16:04[EDT]| |NRC NOTIFIED BY: MARK SMITH |LAST UPDATE DATE: 08/26/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MIKE McCANN 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 N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | DURING MODIFICATION WORK, CRAFT PERSONNEL LOOSENED AN ELECTRICAL TERMINAL | | TO ADD A CONNECTION AT THAT POINT. WHEN THE AFFECTED TERMINAL SCREW WAS | | LOOSENED, THE NEUTRAL PHASE POWER FEED WAS INTERRUPTED TO MOST OF THE | | DIVISION II ISOLATION LOGIC. THIS RESULTED IN ISOLATIONS AND ACTUATIONS | | THAT WERE EXPECTED TO OCCUR ON LOSS OF THIS POWER. THE TERMINAL HAS BEEN | | RE-TIGHTENED AND THE LOGIC HAS BEEN RESET. RECOVERY FROM THE ISOLATIONS | | AND ACTUATIONS IS IN PROGRESS. | | | | THE PLANT IS SHUTDOWN AND DEFUELED. THIS EVENT DID NOT HAVE ANY AFFECT ON | | THE SPENT FUEL POOL OR FUEL POOL COOLING. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27718 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DRESDEN REGION: 3 |NOTIFICATION DATE: 08/27/94 | |UNIT: [ ] [2] [3] STATE: IL |NOTIFICATION TIME: 02:45 [ET]| |RX TYPE: [1] GE-1,[2] GE-3,[3] GE-3 |EVENT DATE: 08/27/94 | +------------------------------------------------+EVENT TIME: 01:15[CDT]| |NRC NOTIFIED BY: TIM WOGTELEWICZ |LAST UPDATE DATE: 08/27/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MIKE MCCANN 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | 3 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | OFFSITE DOSE ASSESSMENT MONITOR OUT OF SERVICE. | | | | AT 2302 CDT ON 8/26/94, IT WAS DISCOVERED THAT CHANNELS 1,3,4,5,7,8, & 9 OF | | THE UNIT 2/3 MAIN CHIMNEY SYSTEM PARTICULATE IODINE AND NOBLE GAS (SPING) | | MONITOR WERE STUCK IN THE FLUSH MODE. EFFORTS TO RESTORE THE SPING MONITOR | | CHANNELS HAVE FAILED. EFFORTS TO PLACE A BACKUP GE SYSTEM IN SERVICE WERE | | ALSO UNSUCCESSFUL UNTIL 0125 CDT ON 8/27/94 DUE TO NUMEROUS TRIPS OF A | | SAMPLE PUMP. | | | | PER TECH SPEC 3.2.5, A MARINELLI SAMPLE (TYPE OF GRAB SAMPLE) HAS BEEN | | OBTAINED AND WILL BE TAKEN EVERY EIGHT HOURS UNTIL THE MAIN CHIMNEY SPING | | MONITOR HAS BEEN RETURNED TO SERVICE. REPAIRS OF THE MONITOR ARE IN | | PROGRESS. | | | | THE SPING MONITOR HAS APPARENTLY BEEN IN THE FLUSH MODE SINCE 1316 CDT ON | | 8/26/94 RESULTING IN NO OFFSITE DOSE ASSESSMENT MONITORING FOR | | APPROXIMATELY 13 HOURS. HOW THE SPING MONITOR GOT INTO THE FLUSH MODE IS | | STILL UNDER INVESTIGATION. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27719 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: VERMONT YANKEE REGION: 1 |NOTIFICATION DATE: 08/28/94 | |UNIT: [1] [ ] [ ] STATE: VT |NOTIFICATION TIME: 20:34 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 08/28/94 | +------------------------------------------------+EVENT TIME: 20:22[EDT]| |NRC NOTIFIED BY: DAVE HOLLENQUIST |LAST UPDATE DATE: 08/28/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN KINNEMAN 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 | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE HAS BEEN NOTIFIED BY ALLCOM THAT THE AMES HILL NOAA EMERGENCY | | RADIO TRANSMITTER IS INOPERABLE. ALLCOM IS IN THE PROCESS OF DISPATCHING | | PEOPLE OUT TO FIX IT. | | | | THE NRC RESIDENT INSPECTOR, STATE AND LOCAL OFFICIALS WILL BE NOTIFIED. | | | | **** UPDATE AT 2157 EDT ON 08/28/94 BY HOLLINQUIST TAKEN BY ANDREWS **** | | THE TRANSMITTER WAS RETURNED TO SERVICE AT 2153 EDT. THE LICENSEE WILL | | NOTIFY THE NRC RESIDENT INSPECTOR. | | | | HOO NOTIFIED R1DO (JOHN KINNEMAN). | +------------------------------------------------------------------------------+