ENS 49626: Difference between revisions

v t e ENS Event
12:36 Dec 12, 2013
Title	Both Trains of Primary Containment Hydrogen and Oxygen Monitors Out of Service for Maintenance
Event Description	This notification is being made due to a loss of emergency assessment capability in accordance with 10 CFR 50.72(b)(3)(xiii). At 0436 (PST), on 12/12/2013 the Division 1 sample rack for monitoring primary containment oxygen and hydrogen atmospheric concentrations was removed from service for planned maintenance activities. The Division 1 sample rack is expected to be out of service for 14 hours1.62037e-4 days <br />0.00389 hours <br />2.314815e-5 weeks <br />5.327e-6 months <br />. The redundant Division 2 sample rack was previously removed from service for maintenance and remains out of service for repairs. Compensatory measures to monitor primary containment for hydrogen and oxygen are available via grab samples using chemistry procedures. The licensee has notified the NRC Resident Inspector. * * UPDATE FROM QUOC VO TO HOWIE CROUCH AT 1705 EST ON 12/13/13 * * * Following completion of maintenance activities, the Division 1 sample rack for monitoring primary containment oxygen and hydrogen atmospheric concentrations was returned to operable status at 1150 PST on 12/13/2013, restoring its required emergency assessment capability. The NRC Resident Inspector has been notified. Notified R4DO (Walker).

ENS 49626 +/-
Where
Columbia Washington (NRC Region 4)
Reporting

10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness
Time - Person (Reporting Time:+0.13 h0.00542 days <br />7.738095e-4 weeks <br />1.78074e-4 months <br />)
Opened:	Quoc Vo 12:44 Dec 12, 2013
NRC Officer:	Howie Crouch
Last Updated:	Dec 13, 2013
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v • d • e

v t e Emergency Notification System
Columbia with 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness
WEEKMONTHYEAR2024-06-05T04:41:00 [Table view]
[ENS list for Columbia]

@@ Line 16: / Line 16: @@
 | event date = 12/12/2013 04:36 PST
 | last update date = 12/13/2013
-| title = Both Trains Of Primary Containment Hydrogen And Oxygen Monitors Out Of Service For Maintenance
+| title = Both Trains of Primary Containment Hydrogen and Oxygen Monitors Out of Service for Maintenance
 | event text = This notification is being made due to a loss of emergency assessment capability in accordance with 10 CFR 50.72(b)(3)(xiii). At 0436 (PST), on 12/12/2013 the Division 1 sample rack for monitoring primary containment oxygen and hydrogen atmospheric concentrations was removed from service for planned maintenance activities. The Division 1 sample rack is expected to be out of service for 14 hours. The redundant Division 2 sample rack was previously removed from service for maintenance and remains out of service for repairs. Compensatory measures to monitor primary containment for hydrogen and oxygen are available via grab samples using chemistry procedures.
 The licensee has notified the NRC Resident Inspector.

Latest revision as of 20:52, 1 March 2018