TransCanada is proposing to construct new natural gas pipeline facilities primarily along the Canadian Mainline pipeline corridor between the City of Markham and the Township of Edwardsburgh/Cardinal.
The project will include four sections of new 36-inch diameter natural gas transmission pipeline between the City of Markham and the Township of Edwardsburgh/Cardinal as well as new compressor unit additions at five existing compressor stations to help move the natural gas efficiently through the system. The five existing facilities are located in the Municipality of Clarington (Station 134), the Township of Alnwick-Haldimand (Station 136), the Township of Tyendinaga (Station 139), the City of Kingston (Station 142) and the Township of Augusta (Station 144).
The compressor packages will be equipped with dry low emissions reduction technology, as well as noise attenuation equipment, and will be housed at each site in a new two-unit compressor building within a fully fenced station yard adjacent to the existing station. The new units will be located on TransCanada’s property. The final scope of the Project will be determined by ongoing consultation with customers and system capability in the service area.
The additional compression units are required to offset pressure losses as the gas travels through the pipeline. These units will provide the primary service at the station and in so doing, permit the reduced utilization of older compression equipment on site. The existing compressor units will remain available for use to provide additional capacity as required in order to meet our customer commitments. TransCanada will deactivate or decommission these units at a later date as required.
The compressor stations will be powered by gas turbine engines, equipped with air and noise attenuation equipment. In addition to remote monitoring by the TransCanada Operations Control Centre (OCC), a local safety system will automatically shut down the compressor units in the case of abnormal operating conditions.
Additional details about the compressor stations will be provided in the application along with the Environmental and Socio-Economic Assessment (ESA).
Advances in Compressor Unit Technology
The proposed compressor units utilize state of the art controls technology to minimize air emissions. The units will operate without vibration levels and will meet the Ontario Ministry of the Environment’s guidelines. Overall, the modifications will make the station operate in a quieter, cleaner and smoother manner, resulting in an improvement to existing effects experienced by residents neighbouring the station.
- Addition of one steel framed compressor station building (approximately 25 metres by 50 metres)
- Addition of two 11 MW compressor units within the new compressor building
- Addition of five skidded buildings for personnel, electrical, mechanical equipment, and back-up power generator (approximately 3.7 metres by 15.2 metres)
- New yard piping to connect the new station to TransCanada’s existing pipeline system
Compressor Station Fact Sheets
- Station 134 Bowmanville – Municipality of Clarington (248 KB, PDF)
- Station 136 Cobourg – Township of Alnwick/Haldimand (248 KB, PDF)
- Station 139 Belleville – Tyendinaga Township (248 KB, PDF)
- Station 142 Kingston – City of Kingston (247 KB, PDF)
- Station 144 Brockville – Township of Augusta (247 KB, PDF)