This report was received by the State of
Illinois via e-mail:
Varian Medical Systems reported that during a routine [high dose rate] HDR source exchange on 11/7/18, at Hinsdale Hospital, IL, they found residual contamination on a wipe sample of the wire from the source being removed from the device. The wipe activity measured less than leak test limits of 0.005 microCurie and measured 7.87 cps (40 Bq) with background measuring 0.45 cps. The source and wire were removed from the device. The wire was wiped prior to shipment to return the source to Alpha Omega. The area was immediately cordoned off by the engineer. Varian assumes this is a contaminated particle on the wire and that the source itself is not leaking. The wire is wiped prior to shipment from Alpha Omega and if contaminated it should not have been installed in the field. The source activity is now approximately 4.0 Ci of lr-192. The investigation is ongoing by the licensee and Varian.
Illinois Item Number: IL180039