Event Notification Report for December 05, 2005
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/04/2005 - 12/05/2005
EVENT NUMBERS
42188
Power Reactor
Event Number: 42188
Facility: PRAIRIE ISLAND
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: WILLIAM MATHER
HQ OPS Officer: JOHN MacKINNON
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: WILLIAM MATHER
HQ OPS Officer: JOHN MacKINNON
Notification Date: 12/05/2005
Notification Time: 10:45 [ET]
Event Date: 12/05/2005
Event Time: 09:00 [CST]
Last Update Date: 01/06/2006
Notification Time: 10:45 [ET]
Event Date: 12/05/2005
Event Time: 09:00 [CST]
Last Update Date: 01/06/2006
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):
PATTY PELKE (R3)
PATTY PELKE (R3)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
PLANT PROCESS COMPUTER SYSTEM (PPCS) WILL BE TAKEN OUT OF SERVICE FOR APPROXIMATLEY 2 WEEKS.
"The Plant Process Computer (PPCS) will be taken out of service for an approximately 2 week period to implement a planned modification. The current PPCS is being replaced and the computer outage is required to allow cutover to the new PPCS. During this time period ERDS and SPDS will not be available. ERDS and SPDS parameters will be monitored by control board indications. Compensatory actions have been developed.
"This is an 8-hour reportable event per 10 CFR50.72(b)(3)(xiii) Major Loss of Assessment Capability. The operation of plant systems will not be affected due to this planned action.
"The PPCS outage is expected to commence around 0600 CST on 12/5/05. The licensee has informed the NRC Resident Inspectors of the modification and schedule. The NRC was previously notified of this planned outage via letter dated November 7, 2005."
The NRC Resident Inspector was notified of this event by the licensee.
* * * UPDATE PROVIDED BY JOHNSON TO ROTTON AT 0324 EST ON 12/16/05 * * *
"The Plant Process Computer System was restored at 2330 CST on 12/15/05. The Safety Parameter Display System (SPDS) has been returned to service. The Emergency Response Data System (ERDS) portion of the system will be turned over once the testing has been completed."
The licensee will notify the NRC Resident Inspector. Notified R3DO (Burgess).
* * * UPDATE PROVIDED BY ELLISON TO ROTTON AT 1716 EST ON 01/06/06 * * *
"This notification is an update to previously made notification, EN# 42188. As of 14:30 CST on 1/6/06 the Unit 1 Emergency Response Data System (ERDS) has been accepted for use and is considered fully operational."
The licensee notified the NRC Resident Inspector. Notified the R3DO (Ring)
"The Plant Process Computer (PPCS) will be taken out of service for an approximately 2 week period to implement a planned modification. The current PPCS is being replaced and the computer outage is required to allow cutover to the new PPCS. During this time period ERDS and SPDS will not be available. ERDS and SPDS parameters will be monitored by control board indications. Compensatory actions have been developed.
"This is an 8-hour reportable event per 10 CFR50.72(b)(3)(xiii) Major Loss of Assessment Capability. The operation of plant systems will not be affected due to this planned action.
"The PPCS outage is expected to commence around 0600 CST on 12/5/05. The licensee has informed the NRC Resident Inspectors of the modification and schedule. The NRC was previously notified of this planned outage via letter dated November 7, 2005."
The NRC Resident Inspector was notified of this event by the licensee.
* * * UPDATE PROVIDED BY JOHNSON TO ROTTON AT 0324 EST ON 12/16/05 * * *
"The Plant Process Computer System was restored at 2330 CST on 12/15/05. The Safety Parameter Display System (SPDS) has been returned to service. The Emergency Response Data System (ERDS) portion of the system will be turned over once the testing has been completed."
The licensee will notify the NRC Resident Inspector. Notified R3DO (Burgess).
* * * UPDATE PROVIDED BY ELLISON TO ROTTON AT 1716 EST ON 01/06/06 * * *
"This notification is an update to previously made notification, EN# 42188. As of 14:30 CST on 1/6/06 the Unit 1 Emergency Response Data System (ERDS) has been accepted for use and is considered fully operational."
The licensee notified the NRC Resident Inspector. Notified the R3DO (Ring)