Event Notification Report for September 28, 2009
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
09/27/2009 - 09/28/2009
EVENT NUMBERS
45386
Power Reactor
Event Number: 45386
Facility: OYSTER CREEK
Region: 1 State: NJ
Unit: [1] [] []
RX Type: [1] GE-2
NRC Notified By: JOSHUA SISAK
HQ OPS Officer: MARK ABRAMOVITZ
Region: 1 State: NJ
Unit: [1] [] []
RX Type: [1] GE-2
NRC Notified By: JOSHUA SISAK
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 09/28/2009
Notification Time: 15:55 [ET]
Event Date: 09/28/2009
Event Time: 07:54 [EDT]
Last Update Date: 09/28/2009
Notification Time: 15:55 [ET]
Event Date: 09/28/2009
Event Time: 07:54 [EDT]
Last Update Date: 09/28/2009
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):
MARIE MILLER (R1DO)
MARIE MILLER (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 99 | Power Operation | 99 | Power Operation |
PLANT PROCESS COMPUTER OUTAGE RESULTING IN A LOSS OF ERDS AND SPDS
"At 07:54 hours EDT, on September 28, 2009, the Plant Process Computer (PPC) was removed from service to replace the Intelligent Remote Control Units (IRCUs). The expected duration of PPC inoperability is approximately 16 to 24 hours. The PPC provides monitoring and communications capability for plant data systems including the Emergency Response Data System (ERDS) and Safety Parameter Display System (SPDS). The loss of PPC requires alternate methods, as described in plant procedures, to be used for the above described functions. Therefore, appropriate assessment of plant conditions, notifications and communications can still be made, if required, during the time that the PPC is inoperable. This report is being made in accordance with 10 CFR 50.72(b)(3)(xiii) which is any event that results in a major loss of emergency assessment capability, offsite response capability or offsite communications capability. As previously stated, alternate means remain available to assess plant conditions, make notifications and accomplish required communications, as necessary. An additional notification will be provided when the PPC operability is restored."
The licensee notified the NRC Resident inspector.
* * * UPDATE AT 2309 ON 9/28/2009 FROM JOSHUA SISAK TO MARK ABRAMOVITZ * * *
"At 2255 hours EDT on Sept 28, 2009, the Plant Process Computer was restored to service. Emergency Response Data System (ERDS) and Safety Parameter Display System (SPDS) were returned to service. All offsite communication capabilities and all emergency assessment capabilities have been restored."
The licensee notified the NRC Resident Inspector.
Notified the R1DO (Miller).
"At 07:54 hours EDT, on September 28, 2009, the Plant Process Computer (PPC) was removed from service to replace the Intelligent Remote Control Units (IRCUs). The expected duration of PPC inoperability is approximately 16 to 24 hours. The PPC provides monitoring and communications capability for plant data systems including the Emergency Response Data System (ERDS) and Safety Parameter Display System (SPDS). The loss of PPC requires alternate methods, as described in plant procedures, to be used for the above described functions. Therefore, appropriate assessment of plant conditions, notifications and communications can still be made, if required, during the time that the PPC is inoperable. This report is being made in accordance with 10 CFR 50.72(b)(3)(xiii) which is any event that results in a major loss of emergency assessment capability, offsite response capability or offsite communications capability. As previously stated, alternate means remain available to assess plant conditions, make notifications and accomplish required communications, as necessary. An additional notification will be provided when the PPC operability is restored."
The licensee notified the NRC Resident inspector.
* * * UPDATE AT 2309 ON 9/28/2009 FROM JOSHUA SISAK TO MARK ABRAMOVITZ * * *
"At 2255 hours EDT on Sept 28, 2009, the Plant Process Computer was restored to service. Emergency Response Data System (ERDS) and Safety Parameter Display System (SPDS) were returned to service. All offsite communication capabilities and all emergency assessment capabilities have been restored."
The licensee notified the NRC Resident Inspector.
Notified the R1DO (Miller).