At 0552 EDT Control Room Operators experienced a Loss of
Annunciators. At 0607 EDT, the licensee declared an Unusual Event per
EAL SU4.1, " Unplanned loss of most or all
Annunciators or Indicators associated with Safety Systems on the
RTGB [Remote Turbine Gage Board] Sections A and B, Primary System
Annunciators and Indicators > 15 minutes." During an alarm test, the
annunciators lit up as expected but did not clear at the completion of the test.
Exit criteria for the Unusual Event will be restoration of the annunciator functions. The licensee has compensatory measures in effect. ERFIS [Emergency Response Facility Information System] and the normal RTGB instruments are available.
The licensee notified the state and informed the NRC Resident Inspector. Notified Other FEDS (FEMA, DHS and NNSA via email).
- * * UPDATE FROM HILL TO KLCO ON 8/17/2012 AT 0954 EDT * * *
On August 17, 2012 at 0940 EDT, the licensee terminated the Unusual Event based on restoring annunciator capability. The licensee notified the NRC Resident Inspector and has terminated ERDS transmission.
Notified NRR-EO(Thomas), R2DO(Guthrie),
IRD(Gott) and other FEDS (
FEMA,
DHS and
NNSA via email)
