The Ontario Society of Professional Engineers (OSPE) welcomes the opportunity to provide feedback on the Draft Integrated Tailored Impact Statement Guidelines for the New Nuclear at Wesleyville (NNW) Project. OSPE is the province's only independent, not-for-profit membership organization representing the engineering profession, with a distribution network reaching over 40,000 engineers across Ontario. Our mandate is to advance the public interest through evidence-based advocacy on matters of engineering, energy, public safety, and environmental stewardship.

Nuclear energy is central to Ontario's long-term energy future. The NNW Project, at a proposed capacity of approximately 10,000 MW, represents one of the most consequential infrastructure decisions in Ontario's history. OSPE supports the federal impact assessment process as the appropriate mechanism for evaluating a project of this scale and complexity, and we are committed to contributing technical expertise that strengthens the rigour and completeness of that process.

OSPE's comments on these draft Integrated Guidelines are informed by the engineering profession's responsibility to protect public safety, the environment, and the long-term interests of the communities affected by this project. They are also informed by OSPE's ongoing engagement with the NNW Project, including our response to the Initial Project Description submitted earlier this year.

Our feedback focuses on areas where the Integrated Guidelines, as currently drafted, miss opportunities to ensure that the full value of the project, including its potential as a thermal energy asset and not only an electricity generator, is properly evaluated. OSPE's comments are offered in a spirit of constructive engagement with IAAC, the CNSC, OPG, and the MS-WTFNs, all of whom share an interest in an assessment process that is thorough, transparent, and capable of producing decisions that will stand the test of time.

OSPE respectfully requests that IAAC consider the observations set out in this submission in finalizing the Integrated Guidelines. We remain available to discuss any aspect of our feedback and to provide further technical input as the assessment proceeds.