Integration with Existing Power Block
If it is determined that the integration of a natural gas boiler with the Pickering Nuclear Power Plant’s existing power block is possible, and the best option for repurposing the plant, then the steam conditions would need to match closely the steam conditions currently being supplied to the plant’s turbines.
Given that the plant was purpose-built to be a nuclear power plant using CANDU reactor technology, it may not be a simple task to merely decouple the reactors from their power block and insert a steam connection to a natural gas boiler. It may be easier and more cost effective to custom build a complete gas plant on the property and connect it to the grid using the existing substation. Regardless, 4 SKIES understands that a complete engineering study and feasibility study would need to be done to determine what if any of the existing plant’s power block can be used, or refitted, or if an entirely new plant would make more sense.
Rather than focusing on the design and integration of a gas plant with the existing Pickering Power Plant, which would no doubt be subject to a future engineering study, 4 SKIES has focused the purpose of this concept document primarily on the idea of environmental sustainability by combining cogeneration with green house production (trigeneration) to take advantage of waste heat and CO2 from a natural gas plant.
The following schematic illustrates in general terms how a trigeneration gas plant and green house concept will work.