Sahamitr Pressure Container Plc. | บริษัท สหมิตรถังแก๊ส จำกัด (มหาชน)

Environmental management

Environmental management

SMPC’s environmental management is part of the overall management approach encompassing ‘Sustainability in Environmental Dimension’. It serves as a demonstration of the company’s commitment to effectively manage business groups, functions, and operational areas in alignment, with a primary focus on sustainable management.

Sustainability Management in the Environment Dimension

Environmental Policy and Practices

To protect the environment, the company has adhered to an environmental policy consisting of the following objectives:

  • Ensuring that all operations and manufacturing processes are environmentally friendly.
  • Preventing accidents and controlling waste discharge to remain below acceptable levels or in compliance with relevant laws.
  • Taking responsibility for upholding environmental protection, as well as respecting local culture and traditions in the areas where the company operates.
  • Promptly and effectively responding to any incidents that impact the environment and community resulting from the company’s operations, while fully cooperating with government officials and related organizations.
  • Avoiding any activities that could harm natural resources and the overall environment.


The company acknowledges that conducting business with environmental friendliness is one of the key factors for sustainability. In order to meet international standards and gain global recognition, SMPC has implemented a policy to encourage employees to efficiently utilize resources such as electricity, water, and oil, and appropriately control their usage. Since 2017, the company has been accredited with ISO 14001:2015 — Environmental Management Systems.

The company has an energy management system in place to achieve the most effective and efficient use of energy. Each year, the company, along with the Environment Management System Committee, sets goals and operates with the aim of reducing electricity consumption. The goals and operations are as follows:

The overall electricity consumption of the company decreased by 10.55% in 2022 compared to 2021, while the electricity consumption per unit of production increased by 0.9%. This increase in electricity consumption per unit of production is due to the decrease in the production unit in 2022. However, the company remains committed to promoting a campaign to reduce energy consumption and increase leakage rate inspections in various areas, including the factory’s air compression system. Additionally, the company has undertaken activities to encourage the reduction of electricity consumption, as outlined below:

The activities aimed at promoting the reduction of electricity consumption include:

    • Replacing conventional light bulbs with energy-saving ones.
    • Conducting regular maintenance of machinery and equipment.
    • Harnessing renewable energy from the sun by installing a Solar Rooftop power generation system.

The company has a water management system in place to ensure efficient water usage, reduce water consumption and loss, and manage water quality. Each year, the company, along with the Environmental Management System Committee, sets goals and operates to reduce water usage. The goals and operations are as follows:

In 2022, the overall water consumption decreased by 1% compared to 2021, while the water usage per production unit increased by 12.8%. This increase in water usage per production unit is a result of the decrease in the production unit in 2022, leading to a higher amount of tap water usage in relation to production. The company continues to actively promote a campaign to reduce water usage and increase water leakage inspections. Additionally, the company has implemented the following activities to reduce tap water usage:

Activities to promote the reduction of tap water usage:

    • The company recycles 100% of used water in the production process by treating it through a filtered and disinfected process.
    • Expanding the water reservoir to increase the capacity for water recycling.
    • Storing rainwater in a reserve water tank for use in the production process.

The company effectively manages both hazardous and non-hazardous garbage and waste. It actively promotes waste management and separation. The information regarding garbage and waste management operations is as follows:

In 2022, 73% of non-hazardous waste was recycled and utilized. As for hazardous waste, the company has installed a zinc dust collector box in the production line, allowing for 20% of it to be reused and recycled. SMPC has implemented the following activities to promote waste management:

Activities to promote waste management:

    • The company has provided suitable waste containers, ensuring waste is separated and stored in an organized manner.
    • A contaminated waste shed has been constructed for appropriate disposal, following standardized company protocols.
    • The company has implemented the ‘Waste Bank Project’ as part of its 5S activities, with continuous participation from all employees.

The company has ensured compliance with exhaust fume standards specified by law. Each year, the company, along with the Environment Management System Committee, sets targets and implements air pollution management. The goals and operations are as follows:

Activities to promote air quality management:

    • SMPC reduces internal dust levels before releasing air into the surrounding community by outsourcing daily vacuuming services within the plant.
    • The production process utilizes a wet scrubber system to prevent the emission of fumes and dust generated during production into the air, thereby minimizing the impact on the environment.
    • The relevant departments conduct regular monitoring of air quality and have an audit and maintenance plan for machinery and equipment.

The company recognizes the importance of climate change and global warming, as they pose the risk to the company’s business operations. Therefore, the company emphasizes the reducing of greenhouse gas emissions in response to government and private sector policies, both domestically and internationally, which focus on mitigating such emissions. In 2022, the company established a working team for carbon footprint management to assess its greenhouse gas emissions. Using data from January 1, 2021, to December 31, 2021, with that year as the base, the company hired an expert company to verify the emissions. On July 26, 2022, the company obtained certification for Carbon Footprint for Organization from the Thailand Greenhouse Gas Management Organization (Public Organization). The company has also set goals to reduce greenhouse gas emissions, with the following operational information.

1. Direct greenhouse gas emissions (Scope 1):
These are caused by the combustion of various fuels, both from machines and from company-owned vehicles, such as LPG, gasoline and diesel. Additionally, direct emissions include carbon dioxide emissions from the production process, the use of refrigerants, and the use of chemicals in the wastewater treatment system.

2. Indirect greenhouse gas emissions from energy use (Scope 2):
These are caused by the company’s electricity consumption.

3. Other indirect greenhouse gas emissions (Scope 3):
These are caused by consumption of energy and various fuels, such as LPG, gasoline, diesel and electricity.

In 2022, the company set a goal to reduce greenhouse gas emissions by 1 percent compared to the base year of 2021. In that year, the company successfully reduced greenhouse gas emissions by 4,479 tons of carbon dioxide, which represents a decrease of 16.38 percent compared to the base year 2021.

The company measures noise, light and heat levels to ensure a good working environment for employees and operators. The company also prioritizes the safety and well-being of operators by setting operational goals as follows:

  • Level of noise: SMPC consistently monitors level of noise according to the required law to ensure there is no noise pollution in the community. Wind noise reduction devices (silencers) are used in the production process. The company has also installed soundproof walls to reduce the noise caused by factory operation. Planting trees around the factory fence serves as an additional soundproofing measure. SMPC also considers other strategies to prevent and manage the noise pollution. For the employee safety, the company provides noise protection, such as earplugs and earmuffs, to those working in high-risk noise environment. Employees are also encouraged to wear personal protection equipment (PPE). Additionally, the company conducts hearing test as part of the annual medical checkup for the employees working in areas with high noise levels.
  • Lighting: The company ensures proper illumination in the working area to provide employees with sufficient lighting and a safe working environment, thereby preventing accident.
  • Heat: The company measures heat levels in the working areas and takes immediate corrective action if improper operating conditions are detected.

Employee Education and Training on Environment

The company has a policy to raise awareness and spread the concept of efficient resource utilization and environmental conservation to all employees through training, the company’s notice board, and posters. Additionally, the company organizes activities to inspire all employees to properly use resources and conserve the environment, as follows:

1. ISO 14001 training is provided to new staff members. The public relations team of the ISO 14001 project has already incorporated the project into the annual training course for review.

2. A campaign is being implemented by the company to separate waste into general waste, recyclable waste, and hazardous waste, with continuous efforts.

3. Energy conservation is promoted both within and outside the organization, reaching out to business partners and the community through brochures, contact manuals, and regulations.

4. The company provides a complaint center for submitting complaints related to environmental impact. The center can be reached at 02-895-4139 or via email at, available 24 hours a day.

5. During the quarterly Board of Directors meeting, there will be an agenda item to regularly consider, follow up on, and take action regarding whistleblowing incidents.

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