Commission amends Ontario Power Generation’s operating licence for the Darlington Nuclear Generating Station to authorize the production of lutetium-177 and yttrium-90

Today, the Canadian Nuclear Safety Commission announced the Commission’s decision to amend Ontario Power Generation’s power reactor operating licence for the Darlington Nuclear Generating Station to authorize the production of lutetium-177 and yttrium-90.

Today, the Canadian Nuclear Safety Commission (CNSC) announced the Commission’s decision to amend Ontario Power Generation’s (OPG) power reactor operating licence for the Darlington Nuclear Generating Station (NGS) to authorize the production of lutetium-177 (Lu-177) and yttrium-90 (Y-90) using the existing target delivery system on Darlington NGS Unit 2. This decision follows a public hearing in writing with interventions. The amended licence remains valid until November 30, 2025.

The Darlington NGS is located in the Municipality of Clarington, Ontario, within the traditional lands and waters of the Michi Saagiig Anishinaabeg, the Gunshot Treaty (1787–88), the Williams Treaties (1923), and the Williams Treaties Settlement Agreement (2018). 

In making its decision, the Commission considered written submissions from OPG, CNSC staff and 7 intervenors. After reviewing all submissions, the Commission concluded that OPG is qualified to carry on the activities that the amended licence will authorize.

The record of decision is available upon request by contacting the Commission Registry at [email protected]. It will also be posted in both official languages on the CNSC website at cnsc-ccsn.gc.ca at a later date. All submissions are also available on the CNSC website.