Air Quality Control


Air Quality Control

Sustainable Development Goals

Positive and Negative Impacts

PTT prioritizes controlling, preventing, and reducing air pollution stemming from its operations, products, and services, notably from production processes and equipment like the Gas Separation Plant, natural gas pipeline systems, and natural gas vehicle operations. These activities can affect the environment, neighboring communities, and the public. Thus, PTT is committed to enhancing air quality control within and around its operational areas. This commitment involves investing in environmentally friendly advanced technology for pollution treatment and removal, researching pollution reduction methods at the source, and continuously monitoring, measuring, and managing air quality to meet standard criteria and decrease pollution levels.

Objectives/ Goals

PTT stresses the importance of air quality control in line with legal requirements and aims to reduce environmental impacts on society and communities. Strategic objectives include achieving zero annual increase in air pollutant emissions and establishing Quality, Security, Safety, Health, and Environment (QSHE). Key performance indicators for air pollutants, such as nitrogen oxides (NOx), sulfur dioxide (SO₂), volatile organic compounds (VOCs), and particulate matter (PM2.5), are monitored and reported to government agencies as mandated by law. Additionally, efforts are directed towards monitoring and seeking methods or tools to mitigate potential health impacts on employees, workers, communities, and society.

Management Approach

PTT has identified air quality management and control as a pivotal environmental focal point. Within the SSHE management framework, policies, long-term and yearly objectives are defined, alongside rigorous monitoring, measurement, and oversight procedures to guarantee adherence to laws, standards, best practices, and company protocols. Performance and efficacy undergo quarterly evaluation within the SSHE oversight structure. Furthermore, government bodies are kept informed, while pertinent stakeholders receive transparent and continuous updates.

PTT recognizes its duty and aspires to be a frontrunner in air quality management, meeting the expectations of all stakeholders. Consequently, diverse measures are enacted to monitor, prevent, and mitigate air pollution, including ongoing air quality surveillance for legal compliance and Environmental Impact Assessment (EIA) reporting. The Company invests in and deploys cutting-edge international technology to regulate external air emissions, ensuring effective air quality control and minimizing adverse impacts on the environment, society, and local communities to the greatest extent possible.

Key Initiatives

Control of Nitrogen Oxide (NOx) and Sulfur Oxide (SOx) Emissions from Production Processes:
PTT is dedicated to mitigating emissions at their source by employing cutting-edge technology to efficiently reduce or eliminate air pollutants. Techniques such as Dry Low Emission (DLE) and Selective Catalytic Reduction (SCR) are utilized. The Company has significantly expanded the deployment of pollution control equipment and maintains continuous monitoring, measurement, and oversight of emissions to analyze data and devise the most effective air quality control strategies.

Reduction of Volatile Organic Compounds (VOCs) Emissions from Production Processes:
To curb VOCs emissions, PTT employs advanced technology for precise monitoring and detection, including the use of camera technology to identify VOCs leaks. Additionally, proactive maintenance of protective equipment is conducted to minimize leaks. In 2022, PTT conducted a comprehensive study on VOCs Control Techniques to enhance the efficiency of VOCs control measures.

Control and Mitigation of Fine Particulate Matter (PM2.5) Pollution:
Addressing PM2.5 pollution, a significant environmental concern, PTT, joining forces with the rest of the private sector, undertakes various initiatives:
  • Supporting the government's long-term plan for the national “PM2.5 pollution control” agenda by distributing low-sulfur diesel fuel with an average sulfur content of less than 10 ppm, surpassing the legal requirement by five times. This low-sulfur fuel is available at PTT Stations in Bangkok, suburban areas, and central and eastern regions.
  • For other sources of PM2.5 dust emissions, such as open burning, PTT supports farmers in collecting sugarcane leaves and using them as fuel for electricity generation. This initiative aligns with the government's measures to combat pollution.
  • PTT's Innovation Institute has continuously developed the PTT Innovative Hybrid Treatment Prototype for PM2.5 and Airborne Pathogen Removal, which received the Outstanding State Enterprise Innovation Award in 2021. This innovation has been expanded through installation and utilization in various points across PTT's facilities, including office buildings, main offices, natural gas service stations, and petroleum depots. In 2021, this covered areas in 12 provinces, including Bangkok, Samut Prakan, Pathum Thani, Saraburi, Chachoengsao, Chonburi, Rayong, Ratchaburi, Nakhon Ratchasima, Prachinburi, Nakhon Pathom, and Ayutthaya, with plans for further expansion to over 200 points in 2022.
  • PTT's Innovation Institute has developed the Smart Sensor system for air quality monitoring (PM2.5), known as "HAWA" (PM Alert air quality monitoring system), utilizing Laser Scattering technology. This system transmits data wirelessly via NB-IoT network connectivity, manages data through cloud servers, and displays results through direct text messages, web applications, and Web APIs. The system can be installed both indoors and outdoors, covering areas such as PTT's office buildings, main offices, natural gas service stations, and eastern petroleum depots. In 2023, the installation of Smart Sensor systems for air quality monitoring expanded to cover more than 30 operational sites of PTT nationwide, aiding in assessment, monitoring, and health impact prevention for employees.
  • Predictive modeling of PM2.5 concentrations is conducted using tools like the Mekong Air Quality Explorer, comparing them with actual measurements from the Department of Pollution Control to monitor potential health impacts on employees proactively.
  • Electric vehicles (EVs) have been procured for executive use to replace conventional vehicles, totaling 70 vehicles since November 1, 2023, with plans for further increments in the following years, contributing to the reduction of fine particulate matter (PM2.5) emissions.

Review of Air Emission Targets for PTT Group

In 2023, the Environment Task Force (E-TF) team collaborated to review goals related to air pollutant emissions, which is one of the objectives in the Quality, Safety, Health, and Environment (QSHE) operational area. This aims to ensure effective air quality control and mitigate environmental, social, and community impacts.

Key Performance Indicators

PTT Performance Data: Environment