Event Notification Report for September 18, 2001
U.S. Nuclear Regulatory Commission
Operations Center
Event Reports For
09/17/2001 - 09/18/2001
** EVENT NUMBERS **
38233 38291
!!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!!
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|Power Reactor |Event Number: 38233 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: COLUMBIA GENERATING STATIREGION: 4 |NOTIFICATION DATE: 08/24/2001|
| UNIT: [2] [] [] STATE: WA |NOTIFICATION TIME: 17:05[EDT]|
| RXTYPE: [2] GE-5 |EVENT DATE: 08/24/2001|
+------------------------------------------------+EVENT TIME: 13:05[PDT]|
| NRC NOTIFIED BY: FISHER |LAST UPDATE DATE: 09/17/2001|
| HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: NON EMERGENCY |BILL JONES R4 |
|10 CFR SECTION: | |
|DDDD 73.71 UNSPECIFIED PARAGRAPH | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|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
+------------------------------------------------------------------------------+
| SAFEGUARDS SYSTEM DEGRADATION RELATED TO AREA BOUNDARY |
| |
| IMMEDIATE COMPENSATORY MEASURES TAKEN UPON TO DISCOVERY |
| |
| THE NRC RESIDENT INSPECTOR WILL BE NOTIFIED |
| |
| CONTACT THE HEADQUARTERS OPERATION CENTER FOR ADDITIONAL DETAILS. |
| |
| * * * RETRACTED AT 1407 EDT ON 9/17/2001 BY MICHAEL FERRY TO FANGIE JONES * |
| * * |
| |
| The licensee retracted this notification after further review of the event |
| particulars. The licensee notified the NRC Resident Inspector. The R4DO |
| (John Pellet) has been notified. |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 38291 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: CALLAWAY REGION: 4 |NOTIFICATION DATE: 09/17/2001|
| UNIT: [1] [] [] STATE: MO |NOTIFICATION TIME: 19:05[EDT]|
| RXTYPE: [1] W-4-LP |EVENT DATE: 09/17/2001|
+------------------------------------------------+EVENT TIME: 12:05[CDT]|
| NRC NOTIFIED BY: B. BREDMAN |LAST UPDATE DATE: 09/17/2001|
| HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: NON EMERGENCY |JOHN PELLET R4 |
|10 CFR SECTION: | |
|AESF 50.72(b)(3)(iv)(A) VALID SPECIF SYS ACTUAT| |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|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
+------------------------------------------------------------------------------+
| LOSS OF NON-SAFETY RELATED 125 VOLT DC BUS RESULTED IN BOTH MOTOR DRIVEN |
| AUXILIARY FEEDWATER PUMPS STARTING. |
| |
| |
| During routine scheduled maintenance activities, power was lost to a |
| non-safety related 125 volt DC bus. Loss of power to the bus resulted in |
| loss of oil pressure indication on 1 of 2 channels on both main feedwater |
| pumps, which in turn resulted in the actuation of both motor driven |
| auxiliary feedwater pumps. The motor driven auxiliary feedwater pumps ran |
| for approximately 3 minutes. Reactor power increased but no over power event |
| occurred. |
| Power has been restored to the non-safety related 125 volt bus and the motor |
| driven auxiliary feedwater pumps have been secured. |
| |
| The licensee is looking into that maybe when cross connecting the 125 volt |
| DC buses that one of the two fuse disconnect switches might have had a blown |
| fuse which would have resulted in the above event. |
| |
| The NRC Resident Inspector was notified of this event by the licensee. |
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Page Last Reviewed/Updated Thursday, March 25, 2021