Event Reporting: Class II Nuclear Facilities
(These facilities are used in medicine, cancer therapy and research)


Sylvia Fedoruk Canadian Centre for Nuclear Innovation

Date of event: September 19, 2018

On September 19, 2018, the Sylvia Fedoruk Canadian Centre for Nuclear Innovation informed the CNSC of a pressure loss in the target chamber during carbon-11 target bombardment testing at the cyclotron facility. A minor carbon-11 release into the environment was detected. The cyclotron was shut down and an investigation to determine the source of the leak is under way.

Carbon-11 has a very short half-life, so no impact to public health or the environment is expected.

For more information: fedorukcentre.ca/news/news-releases/nr20180920.php


Vancouver Coastal Health Authority

Date of event: March 1, 2017

Vancouver General Hospital, Vancouver, British Columbia

On March 3, 2017, the Vancouver Coastal Health Authority informed the CNSC of an overexposure to a nuclear energy worker (NEW), who was administering therapeutic doses of liquid iodine-131 to two patients at the Vancouver General Hospital. The calculated maximum dose was 2,327 mSv (2.3 Sv) to the right hand and 114 mSv to the left hand. The regulatory dose limit for NEWs for dose to the hand is 500 mSv per year. There has been no health effect noted since the incident. No physical effects of the exposure are expected.

The event will be discussed at a public Commission meeting on April 12, 2017.


Vancouver Coastal Health Authority

Date of event: October 28, 2016

Lions Gate Hospital, Vancouver, British Columbia

The CNSC was informed by Vancouver Coastal Health that a nuclear energy worker working at the Lions Gate Hospital in North Vancouver was exposed to a radiation dose in excess of the applicable dose limit prescribed by the Radiation Protection Regulations on October 28, 2016. During a routine administration of Yttrium-90 to patients, the worker conducting the injections experienced contamination of the hands. The calculated maximum dose the worker received was 1,098.8 mSv (1.1 Sv). The regulatory dose limit is 500 mSv per year. The worker has had no health effects since the incident, and no physical effects from the exposure are expected.

This unfortunate event will be discussed at a public Commission meeting on December 14, 2016.


Montreal Neurological Institute and Hospital

Date of event: January 12, 2015

Isotope production facility, Montreal

The CNSC has been informed that a possible overexposure of a nuclear energy worker has occurred at the Montreal Neurological Institute and Hospital. The licensee has removed the individual from duties that could add to the dose, as required by section 16(b) of the Radiation Protection Regulations, and is conducting an investigation. The licensee has also filed a report with Quebec's Commission de la santé et de la sécurité du travail. The CNSC will continue to report on the situation as further information becomes available.

Visit the Montreal Neurological Institute and Hospital's website for more information.

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