Event Notification Report for September 22, 2026
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Event Text
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
09/21/2026 - 09/22/2026
EVENT NUMBERS
58450
Agreement State
Event Number: 58450
Rep Org: WA Office of Radiation Protection
Licensee: Fred Hutchinson Cancer Center
Region: 4
City: Seattle State: WA
County:
License #: M0225
Agreement: Y
Docket:
NRC Notified By: Boris G. Tsenov
HQ OPS Officer: Sebastien Bruneau
Licensee: Fred Hutchinson Cancer Center
Region: 4
City: Seattle State: WA
County:
License #: M0225
Agreement: Y
Docket:
NRC Notified By: Boris G. Tsenov
HQ OPS Officer: Sebastien Bruneau
Notification Date: 09/15/2026
Notification Time: 18:37 [ET]
Event Date: 09/14/2026
Event Time: 00:00 [PDT]
Last Update Date: 09/15/2026
Notification Time: 18:37 [ET]
Event Date: 09/14/2026
Event Time: 00:00 [PDT]
Last Update Date: 09/15/2026
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
NMSS_EVENTS_NOTIFICATION (EMAIL)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - MEDICAL EVENT
The following is a summary of information provided by the Washington State Department of Health via email:
An investigational therapeutic dose of Pb-212 was delivered to the licensee with an activity of approximately 7 mCi, at a concentration of approximately 1 mCi/mL. The vial was to be used to administer a prescribed dosage of 6 mCi after decay.
Due to the pharmaceutical's limited expiration window, the licensee did not wait for decay to the prescribed dose and removed approximately 1mCi using a syringe. Using a pump assisted gravity method, the infusion began per protocol. The procedure was halted shortly after it began due to significant leakage from the vial. It was determined that approximately 1.5 mCi had been administered successfully. The leakage was contained in the vial shield and protective gauze, and surveys of personnel and surrounding areas confirmed there was no additional contamination.
The patient and referring physician were notified and a detailed report will follow within 15 days.
Washington incident number: WA 26-011
A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.
The following is a summary of information provided by the Washington State Department of Health via email:
An investigational therapeutic dose of Pb-212 was delivered to the licensee with an activity of approximately 7 mCi, at a concentration of approximately 1 mCi/mL. The vial was to be used to administer a prescribed dosage of 6 mCi after decay.
Due to the pharmaceutical's limited expiration window, the licensee did not wait for decay to the prescribed dose and removed approximately 1mCi using a syringe. Using a pump assisted gravity method, the infusion began per protocol. The procedure was halted shortly after it began due to significant leakage from the vial. It was determined that approximately 1.5 mCi had been administered successfully. The leakage was contained in the vial shield and protective gauze, and surveys of personnel and surrounding areas confirmed there was no additional contamination.
The patient and referring physician were notified and a detailed report will follow within 15 days.
Washington incident number: WA 26-011
A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.
Page Last Reviewed/Updated September 22, 2026, 05:17 am EDT