ENS 57764

v t e ENS Event
04:00 Mar 25, 2025
Title	Lost Seed
Event Description	The following is a summary of information provided by the New York City Department of Health via email: The licensee reported a loss of licensed material in quantity more than 10 times the value in 10 CFR Part 20 Appendix C. Memorial Sloan-Kettering reported via email on 5/22/2025 that a I-125 localization seed was discovered to be lost by the licensee on 3/25/2025 during a routine reconciliation. The seed had been implanted in a patient on 3/20/2025 and explanted on 3/21/2025. The activity was estimated as 115 microcuries on the date of clinical use. New York Identification Number: NY250004 THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf

ENS 57764 +/-
Where
Memorial Sloan-Kettering New York City, New York (NRC Region 1)
License number:	75-2968-01
Organization:	New York City Bureau Of Rad Health
Reporting

Agreement State
Time - Person (Reporting Time:+2027.42 h84.476 days <br />12.068 weeks <br />2.777 months <br />)
Opened:	Erik Finkelstein 15:25 Jun 17, 2025
NRC Officer:	Ernest West
Last Updated:	Jun 17, 2025
57764 - NRC Website
v • d • e

v t e Emergency Notification System
Memorial Sloan-Kettering with Agreement State
WEEKMONTHYEAR2025-03-26T04:00:00 [Table view]
[ENS list for Memorial Sloan-Kettering]

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