Water Management Water is a vitally important resource, not only for IRPC but for everybody else in all sectors of society. The company takes it upon itself to participate in water resource management in collaboration with government agencies and other water users within the PTT Group as well as external parties. Participation in water resource management must start at the upstream to ensure the company’s operations do not interfere with water consumption patterns linked to ways of life of people in the agricultural sector, the needs of other industry sectors and the general public. In 2022, a water user committee was established with the objective to achieve a balanced approach to the sharing of natural water resources between IRPC and communities. This is implemented alongside the company’s effort to ensure smooth, continuous operations, uninterrupted by scarcity or shortage. IRPC’s internal water resource management approach is based on the 3Rs concept: Reduce, Reuse, and Recycle. That is, reduce water consumption at the source, then reuse and recycle effluent discharge that has undergone treatment to meet quality standards suitable for reuse for other purposes, such as watering plants and using treated water instead of distilled water to prepare chemical solutions. As for digitalization, the i-utility application is being used to monitor efficient water usage to promote awareness. This could lead to less water being extracted from the natural sources in the first place. The company also launched a campaign to encourage employees to conserve water in their daily life at home and at work as part of the effort to instill in them a culture of water conservation. And this not only applies with the company’s employees. In the major scheduled maintenance in 2022, the company cooperated with the machine cleaning contractor to calculate the amount of water consumption in the machine cleaning work. This helps to determine and control the amount of water used as appropriate. The company joined the PTT Group in conducting a feasibility study to find untapped potential for further water conservation in the production process through the Water Demand Management project. Pilot projects are being conducted at two plants, ETP and UHV. Wastewater Management IRPC has conducted measurements and surveillance of wastewater based on effluent quality parameters applicable within the company’s own industrial zone to ensure it meets the standards of the Online COD at Receiving Ponds 1 and 2. Measurement results are then delivered to the Department of Industrial Works’ monitoring system. IRPC has registered two wastewater treatment plants in IRPC industrial zone in Rayong Province to ensure efficiency in the management of wastewater from the company’s operations. The operation of IRPC’s wastewater treatment plants is controlled by a pipeline network that covers all factories in the industrial zone. Wastewater quality is checked against internal standards prior to being discharged into the treatment facility to ensure the efficiency of treatment at the source and to minimize errors at the central wastewater treatment system. For the management of wastewater from major scheduled maintenance, each type of wastewater will be subject to clearly defined disposal method. Wastewater that cannot be fed into the company's wastewater treatment system will have to be disposed of by a licensed disposal company. This is to prevent unlawful disposal of wastewater and reduce the impact on surrounding communities. To ensure water treatment management efficiency and gain stakeholders’ trust and reassure them of the company’s operational sustainability, IRPC has engaged third-party consultant and government agencies to regularly collect wastewater samples for analysis to ascertain its wastewater quality meets both its internal standards and the standards prescribed by Notifications of the Ministry of Industry. 156 56-1 One Report 2022 IRPC PUBLIC COMPANY LIMITED
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