ENS 46824: Difference between revisions

From kanterella

Latest revision as of 21:07, 1 March 2018

v t e ENS Event
07:09 May 6, 2011
Title	Discovery of an After-The-Fact Unusual Event
Event Description	Operators were making preparations to fill the Containment Spray System riser to support outage activities. At 0204 CDT, when Containment Spray Riser Isolation Valve CS-125A was opened, pressurizer level began to lower. The licensee suspects leak by of a valve in the Shutdown Cooling System. At 0214 CDT, the leak was stopped. Pressurizer level was lowered by 2.6%. After reviewing the event, the licensee determined that the leak rate was greater than 25 gpm which would have resulted in a declaration of an Unusual Event under EAL CU1. Since the event had concluded, no declaration was made. The licensee notified the NRC Resident Inspector.

ENS 46824 +/-
Where
Waterford Louisiana (NRC Region 4)
Reporting

Other Unspec Reqmnt
Time - Person (Reporting Time:+-3.03 h-0.126 days <br />-0.018 weeks <br />-0.00415 months <br />)
Opened:	Michael Shumate 04:07 May 6, 2011
NRC Officer:	Howie Crouch
Last Updated:	May 6, 2011
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v • d • e

v t e Emergency Notification System
Waterford with Other Unspec Reqmnt
WEEKMONTHYEAR2016-10-31T16:00:00 [Table view]
[ENS list for Waterford]

@@ Line 16: / Line 16: @@
 | event date = 05/06/2011 02:09 CDT
 | last update date = 05/06/2011
-| title = Discovery Of An After-The-Fact Unusual Event
+| title = Discovery of an After-The-Fact Unusual Event
 | event text = Operators were making preparations to fill the Containment Spray System riser to support outage activities.  At 0204 CDT, when Containment Spray Riser Isolation Valve CS-125A was opened, pressurizer level began to lower. The licensee suspects leak by of a valve in the Shutdown Cooling System. At 0214 CDT, the leak was stopped. Pressurizer level was lowered by 2.6%.
 After reviewing the event, the licensee determined that the leak rate was greater than 25 gpm which would have resulted in a declaration of an Unusual Event under EAL CU1. Since the event had concluded, no declaration was made.