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. |
+------------------------------------------------------------------------------+
Page Last Reviewed/Updated Wednesday, March 24, 2021