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Community Information Bulletins/Service water leak safely repaired at Chalk River Laboratories
November 15, 2021

Service water leak safely repaired at Chalk River Laboratories

The following information bulletin is in accordance with CNL’s ongoing commitment to voluntary public disclosure of events related to the Chalk River Laboratories (CRL).

Chalk River, 2021 November 15 At approximately 11:30 p.m. on Thursday, November 11, CNL was alerted to a service water leak in Building 466 at the Chalk River Laboratories site. In responding to the incident, emergency personnel discovered an accumulation of service water in the basement of the building, and its source was traced to a service water line break that had occurred elsewhere in the facility.

CNL employees worked through the night to isolate and repair the water line, which disrupted water service to four nearby buildings. Once repairs were completed, the water line was put back into service the following morning, and the service water was restored to the impacted buildings. The leaked water was analyzed to ensure that it was free of any contaminants, before it was safely released through CNL’s storm water management pond.

CNL can confirm that no employees were injured as a result of this event. CNL can also confirm that there were no off-site consequences to members of the public or the environment, and that conditions on site remain normal. The Canadian Nuclear Safety Commission has been notified about the incident.

Building 466 is currently out of service while CNL conducts a full investigation to ensure that there are no further consequences from the incident. CNL would like to express its thanks and appreciation to those responding to this event.


Patrick Quinn
Director, Corporate Communications