OPG Nuclear Plant Upgrades

Construction – Clarington, ON

The Objective

A complete renewal of the OPG Darlington Nuclear Generating Station’s sewer and watermain systems. This was a complete replacement in which the existing wastewater treatment plant was removed and replaced with new pumping stations.


There were a number of challenges on this project. Excavation work at a nuclear facility has the potential to impact the reactors, it’s therefore imperative to operate with a heightened level of awareness. We were tasked with adhering not only to our own high standards of Health & Safety but the province’s nuclear standards as well.

The Result

The project was identified as a Chief Nuclear Officer (CNO) milestone and despite numerous design changes throughout the course of work, was completed on time.


Clarington, ON


Black & MacDonald

Work Performed As


Final Value



Andrew Watson, P.Eng

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