Sustainability

Air Quality Control

Sustainability

Air Quality Control

Sustainable Development Goals
  





Impact of Issues over Time 
Short
Term
Medium Term 
Long
Term
 
Low
Low
Low




  • Air pollution management, including volatile organic compounds (VOCs), nitrogen oxides (NOx), and sulfur dioxide (SO2) emissions
  • Management of other environmental pollutants, such as light pollution, vibrations, electromagnetic radiation, and radiation emissions
Financial Materiality
Impact Materiality
Risk Opportunities
- Financial and reputational damage + The operational 
processes are efficient

+ Reducing environmental, social, and community impacts
- Environmental contamination and public health risks

Objectives/ Targets 

PTT places high importance on air quality management, ensuring compliance with legal standards and minimizing environmental, social, and community impacts. The strategic goal is to achieve zero increase in air pollutant emissions annually. PTT has also established Quality, Security, Safety, Health, and Environment (QSHE), with key indicators for air pollution, including nitrogen oxides (NOx), sulfur dioxide (SO₂), and volatile organic compounds (VOCs). For other pollutants, such as particulate matter (PM2.5), PTT ensures regular monitoring and reporting in accordance with legal requirements. Additionally, PTT actively explores and implements methods and tools to mitigate potential health and environmental impacts on employees, workers, communities, and society.

Management Approach 

PTT integrates air quality management and control as a critical element of its SSHE Management. This includes setting policies, long-term goals, and annual targets, while consistently monitoring progress to ensure compliance with legal, regulatory, and company standards. The effectiveness of these initiatives is reviewed quarterly, with results being reported to the authorities and shared with relevant stakeholders in a transparent and ongoing manner. 

PTT recognizes its responsibility and is dedicated to leading in air quality management, fully committed to meeting the expectations of all stakeholders. To this end, the company has implemented a comprehensive range of measures to control, prevent, reduce, and monitor air quality, ensuring full compliance with legal standards and the requirements set out in Environmental Impact Assessments (EIA). PTT has invested in the installation and utilization of cutting-edge international technologies to control the air quality emissions, ensuring effective management and minimizing the environmental, social, and community impacts to the greatest extent possible. 

Key Initiatives

Control of Nitrogen Oxides (NOx) and Sulfur Oxides (SOx) Emissions from Production Processes 
PTT places a strong emphasis on controlling emissions at their source, utilizing advanced technologies to effectively reduce or eliminate air pollution. Key technologies employed include Dry Low Emission (DLE) and Selective Catalytic Reduction (SCR) systems. The Company has expanded the installation of pollution control equipment and continuously monitors, measures, and regulates emissions. This data is used for analysis and to improve the air quality management plan to ensure maximum efficiency. 

Reduction of Volatile Organic Compounds (VOCs) Emissions from Production Processes 
PTT adopts advanced technologies for the efficient monitoring and measurement of VOC emissions. This includes the use of VOC leak detection cameras and proactive equipment maintenance to minimize leakage. In 2022, PTT conducted a study on VOCs control techniques to further enhance the effectiveness of managing Volatile Organic Compounds (VOCs). The insights gained from this study have been actively implemented in operational areas since 2022. 

Control and Mitigation of Fine Particulate Matter (PM2.5) Pollution 
PM2.5 pollution has become a major environmental issue. PTT has proactively joined the private sector’s efforts to address PM>2.5, with the following initiatives:  
  • Supporting the government's long-term measures in the “National Dust Pollution Management Action Plan” by providing low-sulfur diesel fuel (averaging 10 ppm, five times lower than the legal requirement) through PTT Stations in Bangkok and its vicinity, Central Thailand, and the Eastern region. 
  • Addressing PM2.5 sources, such as open-air burning, by encouraging farmers to collect sugarcane leaves and use them as fuel for electricity generation, aligning with government efforts to reduce burning. 
  • Managing PM2.5 levels indoors by developing an innovative PM2.5 and airborne pathogen treatment system (PTT Innovative Hybrid Treatment Prototype), which won the "Outstanding State Enterprise Award 2021" for Creativity and Innovation. The system is installed at PTT’s headquarters and other locations to reduce indoor PM2.5 concentrations. Additionally, air quality is continuously monitored through the "HAWA" (PM Alert) air quality monitoring system, which utilizes laser scattering technology. PTT's Innovation Institute developed a Smart Sensor system to monitor PM2.5 levels, with data transmitted via NB-IoT wireless networks to a cloud server. The system provides real-time results through direct text messages, web applications, and Web APIs, allowing data integration with other platforms. It is designed for both indoor and outdoor installation, with sensors deployed at key locations such as PTT's headquarters, natural gas stations, and petroleum storage facilities in Eastern Thailand. Over 30 operational sites nationwide, including the Natural Gas Pipeline Operations Center and Eastern Region Petroleum Storage facilities, are equipped with the system. This technology is used for continuous assessment, monitoring, and surveillance, helping to mitigate potential health risks to employees. 
  • Forecasting future PM2.5 concentrations using models such as the Mekong Air Quality Explorer, which is compared to actual PM2.5 measurements from the Pollution Control Department. This helps anticipate health risks to employees from potential air quality changes. 
  • Providing electric vehicles (EVs) to replace gasoline-powered cars for 70 executives, starting on November 1, 2023, with plans to gradually increase the number in the coming years. This initiative is part of efforts to reduce fine particulate matter (PM2.5). 
  • Since January 1, 2024, PTT and its subsidiaries involved in diesel fuel production and distribution have supported the government’s policy by offering Euro 5 standard diesel for vehicles. This initiative aims to improve fuel quality and help reduce PM2.5 emissions in the country’s transportation sector. 

Review of Air Emission Reduction Targets for PTT Group 

Since 2023, the Environment Taskforce (E-TF) of PTT Group has been actively revisiting and refining the targets related to air emissions, which are integral to our Quality, Security, Health, Safety, and Environmental (QSHE) objectives. This review process ensures that PTT effectively manages and controls air quality, while minimizing the environmental, societal, and community impacts. 

Key Performance Indicators and Key Results

PTT Performance Data: Environmental