ENS 54272: Difference between revisions

v t e ENS Event
01:24 Sep 12, 2019
Title	Main Steam Line Radiation Monitor Communication Failure
Event Description	The following event description is based on information currently available. If through subsequent reviews of this event, additional information is identified that is pertinent to this event or alters the information being provided at this time, a follow-up notification will be made via the ENS or under the reporting requirements of 10CFR50.73. Radiation monitor RU-140 (#2 Steam Generator Main Steam Line radiation monitor) experienced a communication failure on both ports A and B. The RU-140 monitor is off line and non-functional at this time. At least one channel of RU-140 is required to perform a Steam Generator Tube Rupture (SGTR) dose assessment. This represents an unplanned loss of radiological assessment capability for the inability to perform dose assessments that require the radiation monitor. The ability to make emergency classifications from other radiological data collection methods such as field sampling remains available. Actions have been initiated to restore the radiation monitor. The NRC Resident Inspector has been informed.

ENS 54272 +/-
Where
Palo Verde Arizona (NRC Region 4)
Reporting

10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness
Time - Person (Reporting Time:+2.02 h0.0842 days <br />0.012 weeks <br />0.00277 months <br />)
Opened:	Jason Hill 03:25 Sep 12, 2019
NRC Officer:	Jeff Herrera
Last Updated:	Sep 12, 2019
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v • d • e

v t e Emergency Notification System
Palo Verde with 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness
WEEKMONTHYEAR2022-03-19T20:06:00 [Table view]
[ENS list for Palo Verde]

@@ Line 20: / Line 20: @@
 Radiation monitor RU-140 (#2 Steam Generator Main Steam Line radiation monitor) experienced a communication failure on both ports A and B. The RU-140 monitor is off line and non-functional at this time.
 At least one channel of RU-140 is required to perform a Steam Generator Tube Rupture (SGTR) dose assessment. This represents an unplanned loss of radiological assessment capability for the inability to perform dose assessments that require the radiation monitor. The ability to make emergency classifications from other radiological data collection methods such as field sampling remains available. Actions have been initiated to restore the radiation monitor.
-The NRC Resident Inspector has been informed."
+The NRC Resident Inspector has been informed.
-| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2019/20190912en.html#en54272
+| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2019/20190913en.html#en54272
 }}{{unit info
 | Unit =  3

Latest revision as of 23:43, 23 February 2020