ENS 56770

v t e ENS Event
04:00 Sep 28, 2023
Title	Agreement State - I-125 Seed Inadvertently Transected
Event Description	The following information was provided by the Pennsylvania Bureau of Radiation Protection via email: On September 28, 2023, staff from Magee Pathology department called the [University of Pittsburgh] radiation safety office to report that they had accidentally transected an I-125 seed used for radioactive seed localization (RSL) in breast tissue during the pathology processing in the laboratory. The seed was a Best Medical International Model 2301 containing 169 microcuries of I-125. Two staff members were involved, and they were told to sequester in the room until personnel from radiation safety could respond. Shortly after, radiation safety personnel performed surveys to determine the extent of the contamination. No personnel contamination was observed. All contamination was discovered in waste material and on the tissue samples. The transected seed was contained. The radiation safety office took possession of the damaged seed and all radioactive waste. At the time of reporting, it is estimated that approximately 50 percent of the activity was lost to open contamination, which is greater than 1 annual limit on intake (ALI) of I-125, and therefore reached the criteria for [10 CFR] 22.2202 reportability. Workers had bioassays performed for thyroid exposure and all returned negative. PA event report ID: PA230028

ENS 56770 +/-
Where
University Of Pittsburgh Pittsburgh, Pennsylvania (NRC Region 1)
License number:	PA-0190
Organization:	Pa Bureau Of Radiation Protection
Reporting

Agreement State
Time - Person (Reporting Time:+102.32 h4.263 days <br />0.609 weeks <br />0.14 months <br />)
Opened:	John Chippo 10:19 Oct 2, 2023
NRC Officer:	Ernest West
Last Updated:	Oct 2, 2023
56770 - NRC Website
v • d • e

v t e Emergency Notification System
University Of Pittsburgh with Agreement State
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