Event Notification Report for April 30, 2001
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
04/29/2001 - 04/30/2001
Power Reactor
Event Number: 37954
Facility: FERMI
Region: 3 State: MI
Unit: [2] [] []
RX Type: [2] GE-4
NRC Notified By: MILLER
HQ OPS Officer: CHAUNCEY GOULD
Region: 3 State: MI
Unit: [2] [] []
RX Type: [2] GE-4
NRC Notified By: MILLER
HQ OPS Officer: CHAUNCEY GOULD
Notification Date: 04/30/2001
Notification Time: 11:38 [ET]
Event Date: 04/30/2001
Event Time: 11:00 [EDT]
Last Update Date: 04/30/2001
Notification Time: 11:38 [ET]
Event Date: 04/30/2001
Event Time: 11:00 [EDT]
Last Update Date: 04/30/2001
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
MELVYN LEACH (R3)
MELVYN LEACH (R3)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 46 | Power Operation | 48 | Power Operation |
PLANT LOST BOTH COMMERCIAL AND ENS PHONE SYSTEMS
The plant lost both their commercial and ENS phone systems due to a fiber optics cable cut. Ameritech is currently troubleshooting and they do not know at this time when service will be restored. The licensee has microwave communication available. They have verified communications with other agencies.
The NRC Resident Inspector was notified.
* * * UPDATE 1702EDT ON 4/30/01 FROM MILLER TO S. SANDIN * * *
"At 1100 on 4/30/01 The Emergency Notification System (ENS) and the commercial telecommunications capability to dial offsite was found to be non-functioning. Communications with outside agencies has been verified through the microwave transmission lines (RERP Lines). The cause is being attributed to a problem with an offsite fiber optics cable and an investigation is underway by the local telecommunications company. The ENS and commercial telecommunications lines were verified functional at 1650."
The licensee informed the NRC resident inspector. Notified R3DO(Leach)
The plant lost both their commercial and ENS phone systems due to a fiber optics cable cut. Ameritech is currently troubleshooting and they do not know at this time when service will be restored. The licensee has microwave communication available. They have verified communications with other agencies.
The NRC Resident Inspector was notified.
* * * UPDATE 1702EDT ON 4/30/01 FROM MILLER TO S. SANDIN * * *
"At 1100 on 4/30/01 The Emergency Notification System (ENS) and the commercial telecommunications capability to dial offsite was found to be non-functioning. Communications with outside agencies has been verified through the microwave transmission lines (RERP Lines). The cause is being attributed to a problem with an offsite fiber optics cable and an investigation is underway by the local telecommunications company. The ENS and commercial telecommunications lines were verified functional at 1650."
The licensee informed the NRC resident inspector. Notified R3DO(Leach)
Power Reactor
Event Number: 38043
Facility: DUANE ARNOLD
Region: 3 State: IA
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: JOHN KARRICK
HQ OPS Officer: DOUG WEAVER
Region: 3 State: IA
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: JOHN KARRICK
HQ OPS Officer: DOUG WEAVER
Notification Date: 06/01/2001
Notification Time: 11:43 [ET]
Event Date: 04/30/2001
Event Time: 23:13 [CDT]
Last Update Date: 06/01/2001
Notification Time: 11:43 [ET]
Event Date: 04/30/2001
Event Time: 23:13 [CDT]
Last Update Date: 06/01/2001
Emergency Class: NON EMERGENCY
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
Person (Organization):
MARK RING (R3)
MARK RING (R3)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Refueling | 0 | Refueling |
INVALID SPECIFIED SYSTEM ACTUATION
On April 30, 2001, during a refueling outage and with the primary containment open for personnel access, an unexpected Group III Primary Containment Isolation System (PCIS, EIIS code: JM) actuation occurred. Operators were attempting to remove 24 VDC battery chargers from service (1D51 and 1D52). The section of the procedure used de-energized the whole Division I 24 VDC bus. As a result, the Offgas system radiation monitor (RM4116A) was the de-energized causing an invalid Group III PCIS isolation.
This actuation is considered a complete isolation for a Group III signal.
The components of the system that were in service at the time of the actuation operated as designed upon receipt of the isolation signal.
The licensee notified the NRC resident inspector.
On April 30, 2001, during a refueling outage and with the primary containment open for personnel access, an unexpected Group III Primary Containment Isolation System (PCIS, EIIS code: JM) actuation occurred. Operators were attempting to remove 24 VDC battery chargers from service (1D51 and 1D52). The section of the procedure used de-energized the whole Division I 24 VDC bus. As a result, the Offgas system radiation monitor (RM4116A) was the de-energized causing an invalid Group III PCIS isolation.
This actuation is considered a complete isolation for a Group III signal.
The components of the system that were in service at the time of the actuation operated as designed upon receipt of the isolation signal.
The licensee notified the NRC resident inspector.