ENS 53492: Difference between revisions

v t e ENS Event
05:00 May 10, 2018
Title	Louisiana Agreement State Report - Potential Overexposure
Event Description	The following is an excerpt from a report received from the state of Louisiana via email: On June 12, 2018, the Radiation Safety Officer (RSO) for MISTRAS Group, Inc. (MGI), received a Landauer Corporation dosimetry report for an Excessive Exposure to the whole body. The report indicated that an instructor received a whole body exposure of 5168 mR during the month of May, yielding a whole body cumulative exposure to date of 5618 mR. A MGI two-person crew, composed of a radiography instructor and a radiography trainee were making exposures at a temporary jobsite located at the Bechtel Liquid Natural Gas Project at Sabine Pass, Louisiana in Cameron Parish. The exposure device was a QSA GLOBAL Model 880D loaded with a 74 Ci Ir-192 source. When the RSO informed the instructor of the reported excessive exposure, the instructor claimed that one day during May 2018, he had dropped his badge while he and his trainee were performing panoramic exposures, but did not notice the badge missing until after the exposure was completed. The instructor stated he searched for his badge and recovered it from the platform approximately one foot directly below the area being radiographed for a 90-second exposure. Upon further questioning of the above instructor, the RSO learned the body badge had been dropped and inadvertently exposed on May 10, 2018. The RSO stated the instructor failed to report the incident on the date of occurrence. The instructor claimed his direct-reading pocket dosimeter had not gone off-scale or received a high reading. The instructor stated that he believed his badge had only been missing for a single exposure. Health Physics calculations performed by the RSO using the isotope, activity, distance and exposure time provided to him by the instructor do not adequately account for the above excessive exposure in terms of the claimed single inadvertent exposure to the badge, as described. Instead of promptly utilizing the Louisiana Department of Environmental Quality [LDEQ] required emergency hotline number, the RSO for the licensee sent an email to an LDEQ radioactive materials inspector on June 25, 2018 at 11:59 am [CDT], approximately 13 days after the RSO for the licensee first discovered the excessive exposure. Event Report ID No.: LA 180013

ENS 53492 +/-
Where
Mistras Group, Inc Sabine Pass, Louisiana (NRC Region 4)
License number:	La-10986-L01
Organization:	Louisiana Radiation Protection Div
Reporting

Agreement State
Time - Person (Reporting Time:+1379.53 h57.48 days <br />8.211 weeks <br />1.89 months <br />)
Opened:	Russell Clark 16:32 Jul 6, 2018
NRC Officer:	David Air
Last Updated:	Jul 6, 2018
53492 - NRC Website
v • d • e

v t e Emergency Notification System
Mistras Group, Inc with Agreement State
WEEKMONTHYEAR2018-05-10T05:00:00 [Table view]
[ENS list for Mistras Group, Inc]

@@ Line 9: / Line 9: @@
 | unit =
 | utype =
-| cfr = Agreement State
+| cfr = , Agreement State,
 | emergency class =  Non Emergency
 | notification date = 07/06/2018 16:32

ENS 53492: Difference between revisions

Revision as of 20:40, 30 October 2018

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ENS 53492: Difference between revisions

Revision as of 20:40, 30 October 2018

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