Abstract
This paper discusses the design of the Cooling Water Intake (CWI) system for Nova Scotia Power Incorporated (NSPI) Point Aconi generating station. The CWI system includes shafts, submarine tunnels and offshore marine works. The project incorporated a unique combination of factors that included undersea tunnelling through coal measure strata; shaft sinking exposed to the North Atlantic environment; offshore blind shaft drilling; construction of a submerged intake velocity control cap subject to arctic ice flows and adherence to very stringent environmental stipulations. This paper addresses all aspects of these factors that had to be considered in the development of the design. Construction methods are also discussed in order to present a complete case study of this project.
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