ENS 45498: Difference between revisions

v t e ENS Event
13:26 Nov 15, 2009
Title	Unit 2 Declared an Unusual Event Due to a Loss of Annunciators
Event Description	At 0826 EST, Millstone Unit 2 declared a NOUE, due to a loss of power to the control room main board annunciators. Power was lost to the non-vital power supply, VR-11&21, during heater drain pump post maintenance testing, which caused the loss of power to the main control board annunciators. Charging and letdown systems are secured. Additional watchstanders were stationed during the annunciator outage. Power was restored to the main control board, and the licensee is in the process of terminating the NOUE. The NRC remained in Normal Mode. The NRC Senior Resident Inspector has been notified. The State of Connecticut has been notified. * * NOTIFIED BY BRIEN STRIZZI TO DONG PARK AT 0922 EST ON 11/15/09 * * * Millstone Unit 2 terminated the NOUE at 0859 EST after power was restored to the main control board annunciator. Notified R1DO (Cahill), R1RA (Roberts), IRD MOC (Grant), NRR ET (Boger), NRR EO (Bahadur). The NRC Senior Resident Inspector has been notified. The State of Connecticut has been notified as well as DHS and FEMA.

ENS 45498 +/-
Where
Millstone Connecticut (NRC Region 1)
Reporting

10 CFR 50.72(a) (1) (i), Emergency Class Declaration
Time - Person (Reporting Time:+-4.48 h-0.187 days <br />-0.0267 weeks <br />-0.00614 months <br />)
Opened:	Brien Strizzi 08:57 Nov 15, 2009
NRC Officer:	Dong Park
Last Updated:	Nov 15, 2009
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v • d • e

v t e Emergency Notification System
Millstone with 10 CFR 50.72(a)(1)(i), Emergency Class Declaration
WEEKMONTHYEAR2020-11-08T13:29:00 [Table view]
[ENS list for Millstone]

@@ Line 16: / Line 16: @@
 | event date = 11/15/2009 08:26 EST
 | last update date = 11/15/2009
-| title = Unit 2 Declared An Unusual Event Due To A Loss Of Annunciators
+| title = Unit 2 Declared an Unusual Event Due to a Loss of Annunciators
 | event text = At 0826 EST, Millstone Unit 2 declared a NOUE, due to a loss of power to the control room main board annunciators.  Power was lost to the non-vital power supply, VR-11&21, during heater drain pump post maintenance testing, which caused  the loss of power to the main control board annunciators.  Charging and letdown systems are secured.  Additional watchstanders were stationed during the annunciator outage.  Power was restored to the main control board, and the licensee is in the process of terminating the NOUE.  The NRC remained in Normal Mode.
 The NRC Senior Resident Inspector has been notified.  The State of Connecticut has been notified.

Latest revision as of 21:10, 1 March 2018