Preserving air quality
As part of our environmental management commitments, we conduct an air emissions monitoring program at all production facilities to ensure ambient air quality meets certain criteria.
A key component of this air monitoring program is stack testing. Stack testing involves a team of third party specialists who use purpose-built equipment to measure gas emissions from production facility stacks.
Air emissions must comply with specific stack emissions criteria as set out in our environmental management plans.
Our stack testing program covers generators, compressors and waste incinerators at the LNG Plant (23 stacks), HGCP (eight stacks) and Hides Waste Management Facility (one stack).
The types of emissions monitored during stack testing include nitrogen oxide, carbon monoxide and various metals, which are key parameters used to measure air quality.
Testing is performed while equipment is operating and is taken over several hours.
Third party specialists are all trained in working-at-heights because most stacks are located well above ground level. Safety is managed by conducting a thorough Job Safety Analysis to assess risks, including weather-related risks, before starting the monitoring.
The stack testing data is being used in conjunction with our ambient air monitoring results and site-specific weather data gathered at production facilities to build an overall air emissions model.
This model will assess ambient air quality and will be used to verify emissions across production facilities. It will also enable us to better understand the air emissions of greatest impact and allow our engineering teams to focus on potential reductions through operational efficiency.