Event Notification Report for August 06, 2005
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
08/05/2005 - 08/06/2005
EVENT NUMBERS
41899
Power Reactor
Event Number: 41899
Facility: OYSTER CREEK
Region: 1 State: NJ
Unit: [1] [] []
RX Type: [1] GE-2
NRC Notified By: MARK BARATTA
HQ OPS Officer: MIKE RIPLEY
Region: 1 State: NJ
Unit: [1] [] []
RX Type: [1] GE-2
NRC Notified By: MARK BARATTA
HQ OPS Officer: MIKE RIPLEY
Notification Date: 08/06/2005
Notification Time: 04:42 [ET]
Event Date: 08/06/2005
Event Time: 04:03 [EDT]
Last Update Date: 08/06/2005
Notification Time: 04:42 [ET]
Event Date: 08/06/2005
Event Time: 04:03 [EDT]
Last Update Date: 08/06/2005
Emergency Class: ALERT
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
Person (Organization):
HAROLD GRAY (R1)
BRIAN HOLIAN (R1)
CATHERINE HANEY (NRR)
TIM MCGINTY (IRD)
K. SWEETSER (FEMA)
HAROLD GRAY (R1)
BRIAN HOLIAN (R1)
CATHERINE HANEY (NRR)
TIM MCGINTY (IRD)
K. SWEETSER (FEMA)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 43 | Power Operation |
ALERT DECLARED DUE TO LOW INTAKE WATER LEVEL
The licensee declared an Alert (EAL HA3) at 0403 ET 08/06/05 due to low water level in the north half of the intake structure as a result of heavy grass accumulation due to a storm in the area. Intake level recovered to above the EAL value for an Alert, and the event was de-escalated to an Unusual Event (EAL HU3) at 0406 ET. One Circulating Water Pump associated with the north intake was immediately secured and reactor power was reduced to 43%. When the second Circulating Water Pump associated with the north intake was secured, intake water level returned to normal. As a result of the grassing, trash racks collapsed and traveling screen shear pins sheared at the north intake. The traveling screens were subsequently restored to service.
The licensee notified the NRC Resident Inspector.
* * * UPDATE FROM E. DEMONCH TO M. RIPLEY AT 0800 ET 08/06/05 * * *
The licensee terminated the Unusual Event at 0755 ET 08/06/05. The licensee notified the NRC Resident Inspector. Notified R1 DO (H. Gray), NRR (J. Dyer, C. Haney), NSIR IRD (T. McGinty), R1 (Dapas, Holian, Bellamy, Bores), HHS (J. Tribble), USDA (J. Jones), DHS (M. Inzer), FEMA (Liggett), EPA/NRC (P. Layman), DOE (M. Wyatt).
The licensee declared an Alert (EAL HA3) at 0403 ET 08/06/05 due to low water level in the north half of the intake structure as a result of heavy grass accumulation due to a storm in the area. Intake level recovered to above the EAL value for an Alert, and the event was de-escalated to an Unusual Event (EAL HU3) at 0406 ET. One Circulating Water Pump associated with the north intake was immediately secured and reactor power was reduced to 43%. When the second Circulating Water Pump associated with the north intake was secured, intake water level returned to normal. As a result of the grassing, trash racks collapsed and traveling screen shear pins sheared at the north intake. The traveling screens were subsequently restored to service.
The licensee notified the NRC Resident Inspector.
* * * UPDATE FROM E. DEMONCH TO M. RIPLEY AT 0800 ET 08/06/05 * * *
The licensee terminated the Unusual Event at 0755 ET 08/06/05. The licensee notified the NRC Resident Inspector. Notified R1 DO (H. Gray), NRR (J. Dyer, C. Haney), NSIR IRD (T. McGinty), R1 (Dapas, Holian, Bellamy, Bores), HHS (J. Tribble), USDA (J. Jones), DHS (M. Inzer), FEMA (Liggett), EPA/NRC (P. Layman), DOE (M. Wyatt).