ENS 48542: Difference between revisions

v t e ENS Event
15:19 Nov 28, 2012
Title	Notification of Unusual Event Due to Toxic Gas in Radwaste Control Room
Event Description	Entered an Unusual Event [under Emergency Action Level] MU1, toxic gas, carbon monoxide (CO), detected in the Radwaste Control Room. Levels rose to 34 ppm and the Radwaste Control Room was evacuated prior to reaching the First Energy exposure limit of 35 ppm. The source of the CO has not been determined. There is no radiation release from this event. There were no personnel injuries and offsite assistance was not requested. There was no effect on plant operations. The licensee has notified state and local authorities and the NRC Resident Inspector. Notified DHS SWO, FEMA, DHS NICC and NuclearSSA via email. * * UPDATE AT 1504 EST ON 11/28/12 FROM MARIKIO BLOUNT TO HUFFMAN * * * [At 1452 EST, the licensee] terminated the Unusual Event for MU1, due to toxic gas - carbon monoxide, detected in the Radwaste Control Room. The source of the carbon monoxide readings was determined to be from a leaking acetylene bottle. The acetylene bottle has been removed from the building. Carbon monoxide readings have returned to normal. The licensee noted that the acetylene is detected as carbon monoxide by the toxic gas monitoring devices. The licensee has notified State and local authorities and the NRC Resident Inspector. Notified R3DO (Stone), NRR (EO) Lubinski) , IRD (Marshall), DHS SWO, FEMA, DHS NICC and NuclearSSA via email.

ENS 48542 +/-
Where
Perry Ohio (NRC Region 3)
Reporting
Emergency class:	Unusual Event
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:	Rich Prouty 10:50 Nov 28, 2012
NRC Officer:	Howie Crouch
Last Updated:	Nov 28, 2012
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v • d • e

v t e Emergency Notification System
Perry with 10 CFR 50.72(a)(1)(i), Emergency Class Declaration
WEEKMONTHYEAR2014-04-02T18:01:00 [Table view]
[ENS list for Perry]

@@ Line 16: / Line 16: @@
 | event date = 11/28/2012 10:19 EST
 | last update date = 11/28/2012
-| title = Notification Of Unusual Event Due To Toxic Gas In Radwaste Control Room
+| title = Notification of Unusual Event Due to Toxic Gas in Radwaste Control Room
 | event text = Entered an Unusual Event [under Emergency Action Level] MU1, toxic gas, carbon monoxide (CO), detected in the Radwaste Control Room.  Levels rose to 34 ppm and the Radwaste Control Room was evacuated prior to reaching the First Energy exposure limit of 35 ppm.  The source of the CO has not been determined.  There is no radiation release from this event.
 There were no personnel injuries and offsite assistance was not requested. There was no effect on plant operations. The licensee has notified state and local authorities and the NRC Resident Inspector.

Latest revision as of 22:02, 1 March 2018