Event Notification Report for August 24, 1999
U.S. Nuclear Regulatory Commission Operations Center Event Reports For 08/23/1999 - 08/24/1999 ** EVENT NUMBERS ** 36058 36059 36060 +------------------------------------------------------------------------------+ |Power Reactor |Event Number: 36058 | +------------------------------------------------------------------------------+ +------------------------------------------------------------------------------+ | FACILITY: GINNA REGION: 1 |NOTIFICATION DATE: 08/23/1999| | UNIT: [1] [] [] STATE: NY |NOTIFICATION TIME: 12:25[EDT]| | RXTYPE: [1] W-2-LP |EVENT DATE: 08/23/1999| +------------------------------------------------+EVENT TIME: 11:45[EDT]| | NRC NOTIFIED BY: DOUGLAS GOMEZ |LAST UPDATE DATE: 08/23/1999| | HQ OPS OFFICER: FANGIE JONES +-----------------------------+ +------------------------------------------------+PERSON ORGANIZATION | |EMERGENCY CLASS: N/A |KATHLEEN MODES R1 | |10 CFR SECTION: | | |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 100 Power Operation |100 Power Operation | | | | | | | +------------------------------------------------------------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | TEAR DISCOVERED IN THE SUCTION BOOT OF THE CONTROL ROOM RETURN AIR FAN | | | | "At 1015 on 8/23/99 a tear was discovered in a flexible suction joint to the | | Control Room Return Air Fan. This allowed unisolable outside air to be | | drawn into the Control Room Air Handling Unit. A temporary patch was in | | place at 1040. At 1055 the temporary patch was removed and a Temporary | | Modification was installed and completed at 1103. | | | | "Further analysis showed that the tear had allowed inleakage of 178 CFM | | which exceeded the allowable leak rate of 45 CFM per UFSAR Section 6.4." | | | | An investigation will be conducted to determine the cause of the tear. | | | | The licensee informed the NRC Resident Inspector. | +------------------------------------------------------------------------------+ +------------------------------------------------------------------------------+ |Power Reactor |Event Number: 36059 | +------------------------------------------------------------------------------+ +------------------------------------------------------------------------------+ | FACILITY: SAINT LUCIE REGION: 2 |NOTIFICATION DATE: 08/23/1999| | UNIT: [1] [] [] STATE: FL |NOTIFICATION TIME: 14:25[EDT]| | RXTYPE: [1] CE,[2] CE |EVENT DATE: 08/23/1999| +------------------------------------------------+EVENT TIME: 12:36[EDT]| | NRC NOTIFIED BY: JIM HURCHALLA |LAST UPDATE DATE: 08/23/1999| | HQ OPS OFFICER: FANGIE JONES +-----------------------------+ +------------------------------------------------+PERSON ORGANIZATION | |EMERGENCY CLASS: N/A |KENNETH BARR R2 | |10 CFR SECTION: | | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | | | | | | | | | | +-----+----------+-------+--------+-----------------+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ |1 M/R Y 100 Power Operation |0 Hot Standby | | | | | | | +------------------------------------------------------------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | MANUAL REACTOR TRIP DUE TO LOSS OF MAIN CONDENSER VACUUM | | | | The reactor was manually tripped (all rods inserted) due to low main | | condenser vacuum at 1236 EDT. The cause of the low vacuum is under | | investigation and is unknown at this time. When the trip occurred the 'A' | | side non-essential 6.9 kV bus failed to transfer from the auxiliary (plant) | | power to startup (offsite) source resulting in the loss of two of four | | reactor coolant pumps. The cause of the failure to transfer is also unknown | | and under investigation. | | | | The plant is stable in hot standby with forced circulation via the remaining | | two reactor coolant pumps. Feedwater is via the main feedwater system and | | steaming is via the steam bypass system. | | | | The licensee notified the NRC Resident Inspector. | +------------------------------------------------------------------------------+ +------------------------------------------------------------------------------+ |Power Reactor |Event Number: 36060 | +------------------------------------------------------------------------------+ +------------------------------------------------------------------------------+ | FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 08/24/1999| | UNIT: [1] [2] [3] STATE: CT |NOTIFICATION TIME: 06:52[EDT]| | RXTYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 08/24/1999| +------------------------------------------------+EVENT TIME: 06:30[EDT]| | NRC NOTIFIED BY: ACKERMAN |LAST UPDATE DATE: 08/24/1999| | HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+PERSON ORGANIZATION | |EMERGENCY CLASS: N/A |KATHLEEN MODES R1 | |10 CFR SECTION: | | |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 N 0 Refueling |0 Refueling | |2 N Y 100 Power Operation |100 Power Operation | |3 N Y 100 Power Operation |100 Power Operation | +------------------------------------------------------------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | OFF SITE NOTIFICATION DUE TO FIRE OUTSIDE OF THE PROTECTED AREA. | | | | A FIRE WAS REPORTED AT THE COMPRESSOR OIL SEPARATOR IN THE SWITCHYARD | | OUTSIDE THE PROTECTED AREA. THE FIRE WAS EXTINGUISHED WITHIN 10 MINS WITH | | ASSISTANCE FROM OFF SITE FIRE DEPARTMENT. THE FIRE CONSISTED MOSTLY OF | | SMOKE AND SOME FLAMES, BUT THERE WAS NO APPARENT DAMAGE TO THE COMPRESSOR OR | | SWITCHYARD. THE STATE DEPARTMENT OF ENVIRONMENTAL PROTECTION AND THE COUNTY | | WERE NOTIFIED. | | | | THE RESIDENT INSPECTOR WILL BE NOTIFIED. | +------------------------------------------------------------------------------+
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Page Last Reviewed/Updated Wednesday, March 24, 2021