Research report summaries 2020–2021

Contractors’ reports are only available in the language in which they are submitted to the CNSC.

RSP-722.1, Independent Expert Review of Bruce Power Mitigation Measures Study

Following the renewal of Bruce Power’s operating licence in 2018, a condition was established in the Licence Conditions Handbook that requires Bruce Power to conduct an assessment of feasible mitigation measures for thermal effluent and impingement/entrainment improvements. To satisfy this obligation, Bruce Power submitted a final mitigation measures study to Canadian Nuclear Safety Commission (CNSC) on March 31,2020. Kinectrics Inc. was contracted by CNSC to provide an independent review of the Bruce Power draft report in 2019 and final mitigation measures study in 2020. The overall goal of this review was to provide an assessment as to whether the objective and intent of the mitigation measures study was fulfilled.

Kinectrics has completed a review of the Bruce Power final mitigation measures study. The report provides a comprehensive description of a wide range of technologies for potential mitigation of impingement/entrainment and thermal discharge issues at Bruce Power. Bruce Power already has an underwater water intake which minimizes fish impacts compared to the more common surface water intakes. This makes it difficult to justify major capital-intensive solutions to impingement/entrainment and thermal discharge issues without combining the technology with additional operating savings or generation efficiencies.

The report sufficiently assessed most practical available mitigation measures. The report meets the objectives of the study and provides the necessary information that would be required to move to the next level of evaluation. The methodology followed in the evaluation was scientifically sound and provided the required information to generate the data necessary to complete the mitigation matrix. The mitigation matrix is an accepted tool for ranking a range of technologies for potential solutions to a problem. It is recommended any future evaluations are conducted on solutions that can provide mitigation to fish and thermal impacts by the station in addition to reducing debris and/or operating costs to the station or improving operating efficiencies to assist with offsetting the costs of the mitigation measures only. If zebra mussel or algae content in the cooling water could be reduced or increased condenser performance can be linked to these mitigation measures it would be a win/win technology and more likely to be supported at all levels.

Request the RSP-722.1 final report

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