ENS 52016

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v t e ENS Event
05:00 Jun 16, 2016
Title	Agreement State Report - Two Sources Stuck in Dip Tubes During Annual Shutter Test
Event Description	The following information was received from the State of Louisiana via fax: On June 16, 2016, at approximately 1500 CDT, [the] Radiation Safety Officer of ExxonMobil notified LDEQ [Louisiana Department of Environmental Quality] of a potential equipment malfunction. A custom built Berthold level/density gauge installed on G-Line Reactor Vessel, V5300 and possessing seven 10 mCi Co-60 sealed sources, was undergoing a routine annual shutter test in which the sealed sources were pulled upwards in their dip tubes via connecting cables to the top of the source holder. The sources in dip tubes #2 and #6 became stuck in the dip tubes and could not be pulled upward further. The other sources were pulled up to the top of the source holder successfully. All sources were successfully returned to their normal operating positions. [The RSO] called Berthold contract service engineer [at] Radcon, LLC and discussed the potential malfunction. [The service engineer] stated that differential thermal expansion between the source capsules and dip tubes under heating within the reactor vessel likely caused the sources to begin sticking as they were being pulled upward in their dip tubes. The licensee placed another service call to [the service engineer] on June 17, 2016, but was unable to contact him, but left a message. Radcon, LLC will conduct a maintenance inspection and repair of the gauge which is tentatively planned for July 11, 2016. This is not an emergency situation. ExxonMobil Radiation Safety Office staff are monitoring the vessel condition and have the situation under control. There is no potential for off-site exposure. Event Report ID No.: LA160007

ENS 52016 +/-
Where
Exxonmobil Baton Rouge, Louisiana (NRC Region 4)
License number:	LA-2349-L01
Organization:	Louisiana Radiation Protection Div
Reporting

Agreement State
Time - Person (Reporting Time:+36.25 h1.51 days <br />0.216 weeks <br />0.0497 months <br />)
Opened:	Russell Clark 17:15 Jun 17, 2016
NRC Officer:	Donald Norwood
Last Updated:	Jun 17, 2016
52016 - NRC Website
v • d • e

v t e Emergency Notification System
Exxonmobil with Agreement State
WEEKMONTHYEAR2023-08-09T05:00:00 [Table view]
[ENS list for Exxonmobil]

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ENS Notification