ENS 46379: Difference between revisions

v t e ENS Event
21:21 Oct 29, 2010
Title	Degraded Condition - 71% Through Wall Indication on Reactor Recirc Nozzle
Event Description	Information from a Phased Array UT [Ultrasonic Testing] examination of RRA-F002A indicates that a linear indication 6.5" long and a maximum depth of 71 % through wall extent (ID [Inner Diameter] connected) exists. The Phased Array UT examination of RRA-F002A was performed as part of scheduled outage activities. TRM [Technical Requirements Manual] LCO [Limiting Condition for Operation] 3.7.3 for Structural Integrity, Condition B has been entered for the Recirc nozzle/piping. This event is being reported as a degraded condition pursuant to 10CFR50.72(b)(3)(ii)(A) based on the fact that the indications result in a material defect in the primary coolant system which cannot be found acceptable under ASME Section XI, IWB-3600, 'Analytical Evaluation of Flaws' or ASME Section XI, Table IWB-3410-1, 'Acceptance Standards.' The licensee informed the NRC Resident Inspector.

ENS 46379 +/-
Where
Duane Arnold Iowa (NRC Region 3)
Reporting

10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded
LER:	05000331/LER-2010-004
Time - Person (Reporting Time:+-0.37 h-0.0154 days <br />-0.0022 weeks <br />-5.06826e-4 months <br />)
Opened:	Dick Fowler 20:59 Oct 29, 2010
NRC Officer:	Dong Park
Last Updated:	Oct 29, 2010
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v • d • e

v t e Emergency Notification System
Duane Arnold with 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded
WEEKMONTHYEAR2010-10-29T21:21:00 [Table view]
[ENS list for Duane Arnold]

@@ Line 16: / Line 16: @@
 | event date = 10/29/2010 16:21 CDT
 | last update date = 10/29/2010
-| title = Degraded Condition - 71% Through Wall Indication On Reactor Recirc Nozzle
+| title = Degraded Condition - 71% Through Wall Indication on Reactor Recirc Nozzle
 | event text = Information from a Phased Array UT [Ultrasonic Testing] examination of RRA-F002A indicates that a linear indication 6.5" long and a maximum depth of 71 % through wall extent (ID [Inner Diameter] connected) exists. The Phased Array UT examination of RRA-F002A was performed as part of scheduled outage activities.
 TRM [Technical Requirements Manual] LCO [Limiting Condition for Operation] 3.7.3 for Structural Integrity, Condition B has been entered for the Recirc nozzle/piping.

Latest revision as of 22:08, 1 March 2018