Air pollutant emission monitoring system
Management
EGAT is committed to managing and controlling emissions from its stacks to ensure that pollutant levels do not exceed the regulatory limits and standards required by the Notification of Ministry of Industry Re: Emission Standards for Power Generation Facilities, B.E. 2547 (2004) and the Notification of Ministry of Natural Resources and Environment Re: Emission Control Standards for Power Plants, B.E. 2566 (2023). In addition, EGAT conducts continuous monitoring of Particles with diameters of 2.5 micrometers and smaller (PM2.5) emitted from the stacks.
EGAT monitors sulfur dioxide (SO2), nitrogen oxides (NOX), and particulate matter (PM) from power plants 24 hours daily through Continuous Emission Monitoring System (CEMS). Furthermore, to ensure that air quality emitted from power plants comply with legal requirements and minimize environmental impacts, EGAT continuously monitors and reports stack emissions value to the Department of Industrial Works (DIW) and nearby communities. Real-time monitoring results are publicly displayed on the information monitors at power plants and on EGAT’s official website. EGAT’s Continuous Emission Monitoring System (CEMS) is also linked with the DIW’s Remote Emission Monitoring and Warning System. Additionally, accuracy and reliability of the CEMS at all eight EGAT power plants are verified six-monthly to ensure that all monitoring data are precise, credible, and transparent, accordingly.
In addition, EGAT operates an Ambient Air Quality Monitoring System (AAQMS) that monitors air quality 24 hours daily, along with periodic monitoring conducted six-monthly and reported to the licensing agencies and surrounding communities. The parameters measured include Total Suspended Particulates (TSP), Particles with diameters of 10 micrometers and smaller (PM10), Sulfur Dioxide (SO2), and Nitrogen Dioxide (NO2) by modern instruments and advanced technologies which are in compliance with the United States Environmental Protection Agency (US EPA).
In case, the monitoring results show any sign of possible environmental impact on surrounding communities, the system automatically sends caution to power plant to take quick action to solve the problem and protect environmental quality effectively.
Performance Results
EGAT’s Continuous Emission Monitoring System (CEMS) is connected to the Department of Industrial Works’ Remote Emission Monitoring and Warning System to enable real-time data sharing and effective oversight. The performance and accuracy of CEMS at all eight EGAT power plants are regularly verified to ensure data integrity and reliability.
EGAT reports the results of air quality management to the Joint Committee for Community Environmental Monitoring and Development, including the Tripartite Committee and Subcommittee. EGAT also reports its environmental performance every six months to relevant government agencies to show transparency and ensure compliance with environmental laws
Emission data (NOX, SO2, PM) from EGAT power plants.