Event Notification Report for September 06, 2003
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
09/05/2003 - 09/06/2003
EVENT NUMBERS
40138
Power Reactor
Event Number: 40138
Facility: PILGRIM
Region: 1 State: MA
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: MCDONNELL
HQ OPS Officer: CHAUNCEY GOULD
Region: 1 State: MA
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: MCDONNELL
HQ OPS Officer: CHAUNCEY GOULD
Notification Date: 09/06/2003
Notification Time: 17:11 [ET]
Event Date: 09/06/2003
Event Time: 11:51 [EDT]
Last Update Date: 09/06/2003
Notification Time: 17:11 [ET]
Event Date: 09/06/2003
Event Time: 11:51 [EDT]
Last Update Date: 09/06/2003
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
CLIFF ANDERSON (REG)
FRANK GILLESPIE (NRR)
TIM MCGINTY (IRO)
CLIFF ANDERSON (REG)
FRANK GILLESPIE (NRR)
TIM MCGINTY (IRO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 33 | Power Operation |
HPCI DECLARED INOPERABLE DUE TO LOSS OF THE 480V BUS.
While operating at 100% power, the plant sustained a loss of the 480 bus "B1". As a result of the loss of power, HPCI has been isolated due to the inability to auto isolate on a primary containment isolation signal. The SBGT was initiated to restore building ventilation. The Reactor Water Clean Up System was manually isolated due to the loss of power. The "A" recirculation pump tripped as a result of the loss of power. The loss of the 480V bus is being investigated at this time.
The NRC Resident Inspector was notified.
*****UPDATE ON 9/6/03 AT 1805 FROM McDONNELL TO LAURA*****
"Due to the loss of power to the RCIC quadrant coolers, the RCIC system is inoperable but available."
The NRC Resident Inspector was notified.
While operating at 100% power, the plant sustained a loss of the 480 bus "B1". As a result of the loss of power, HPCI has been isolated due to the inability to auto isolate on a primary containment isolation signal. The SBGT was initiated to restore building ventilation. The Reactor Water Clean Up System was manually isolated due to the loss of power. The "A" recirculation pump tripped as a result of the loss of power. The loss of the 480V bus is being investigated at this time.
The NRC Resident Inspector was notified.
*****UPDATE ON 9/6/03 AT 1805 FROM McDONNELL TO LAURA*****
"Due to the loss of power to the RCIC quadrant coolers, the RCIC system is inoperable but available."
The NRC Resident Inspector was notified.