ENS 44068
ENS Event | |
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18:30 Mar 16, 2008 | |
Title | Loss of Plant Process Computer System Erdads |
Event Description | The Plant Process Computer System (Emergency Response and Data Acquisition System, 'ERDADS') OPCONs for Unit 4 failed causing the NRC Emergency Response Data System Link to be non-functional.
This is an eight hour NRC Notification for an ERDADS failure which is not corrected in 30 minutes and a loss of ability to supply ERDS data for greater than 30 minutes per 1OCFR 50.72(b)(3)(xiii). The licensee notified the NRC Resident Inspector.
The Unit 4 Plant process Computer System (Emergency Response and Data Acquisition System, 'ERDADS') is out of service for an approximate 4 week period to implement a planned modification which replaces the current ERDADS system. During this time period the Unit 4 ERDS and SPDS functions will not be available. Also, Unit 4 Regulatory Guide 1.97 Category 2D Containment Temperature and power system indicators for motor control centers, batteries and inverters is unavailable in the Control Room, although other instrumentation is available to monitor these parameters. The reactor is currently defueled. Notified the R2DO (Musser). The licensee notified the NRC Resident Inspector.
ERDS was returned to service on October 31, 2008. The licensee notified the NRC Resident Inspector. Notified the R2DO (Bonser). |
Where | |
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Turkey Point ![]() Florida (NRC Region 2) | |
Reporting | |
10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
Time - Person (Reporting Time:+-1.63 h-0.0679 days <br />-0.0097 weeks <br />-0.00223 months <br />) | |
Opened: | Grant Melin 16:52 Mar 16, 2008 |
NRC Officer: | John Knoke |
Last Updated: | Nov 14, 2008 |
44068 - NRC Website
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Unit 4 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
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