Product Quality and Safety
Commitment, Challenge and Opportunity
CH. Karnchang operates in construction and large-scale infrastructure development, where the use of high-quality materials, energy efficiency, and resource conservation is critical. The company emphasizes environmentally friendly practices and maintains strict construction oversight to ensure safety, sustainability, and compliance with applicable standards. These efforts support stakeholder confidence, reduce operational risks, minimize environmental impacts, and contribute to long-term business value and brand reputation.
The company prioritizes safety, sustainability, and environmental responsibility at every stage, aiming to minimize environmental impact and workplace risks, foster a positive work environment, reduce operational costs, and strengthen its reputation and brand image. Upholding quality standards enhances confidence and increases company value, ensuring long-term stakeholder satisfaction.
Supporting the SDGs Goals
Goal 11:
Goal 12:
Goal 13:
Stakeholders Directly Impacted
Goals and Performance Highlights
- Use environmentally friendly materials for at least 10% of the project's total material cost.
- Concrete must contain at least 20% recycled materials and be made entirely from local materials.
- Rebar and structural steel must contain at least 90% recycled materials and 90% locally sourced materials.
- Lightweight bricks and Mon bricks must be made entirely from locally sourced materials.
- Minimize construction waste in accordance with TREES NC Credit MR 2 by reusing or recycling at least 50% of the waste by weight and volume.
(However, the team aims to reduce waste by more than 75%)
Management and Operational Approach
The company adheres to its environmental management policies and promotes sustainable construction practices under the “Green Construction” approach. Key focus areas include climate change mitigation, biodiversity conservation, and responsible resource use throughout the construction lifecycle.
Supply chain & materials
Hazardous materials and Volatile Organic Compounds (VOCs)
ISO and quality assurance
Construction Quality Warranty
Guidelines for reusing materials and selecting environmentally friendly materials.
CH. Karnchang’s Commitment to Recycling Construction Materials
CH. Karnchang has implemented a systematic approach to managing construction waste, ensuring that construction waste is systematically segregated and transferred to legally authorized and licensed waste management providers for recycling or proper disposal. These materials are then either recycled or disposed of properly through a structured process, as outlined below:
The quality of construction materials is a key determinant of structural safety, durability, and operational efficiency. CH. Karnchang has established internal standards and best practice guidelines for concrete formwork to ensure compliance with safety, engineering, and quality requirements.
Standards and Best Practice Guidelines
| Material Selection | Quality Control Process |
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CH. Karnchang has developed guidelines to maximize material efficiency in its operations through structured construction planning and the safe reuse of materials. Examples of these practices include treating formwork wood with chemical preservatives or release agents to extend its lifespan and constructing worker accommodations using reclaimed materials that remain safe and of good quality.
Before the construction
- Ensure the formwork is secure before placing the reinforcing steel.
- Clean the formwork to remove any debris or contaminants.
- Do not place heavy construction materials on the formwork to prevent damage.
Under construction
- Install leveling devices to keep the formwork stable and prevent any movement during concrete pouring.
- Continuously monitor the strength of the formwork while pouring concrete, and if any settlement occurs, take immediate corrective action.
After the construction was completed
- The removal of formwork must follow the specified curing period. For example, the side forms of beams, columns, walls, and foundations should remain in place for at least two days before removal.
- After removing the formwork, additional bracing must be installed to support the structure’s weight.
- The concrete surface should be inspected, and any defects must be corrected as necessary.
In addition, the company has launched a pilot test for collecting and analyzing material usage data through the SAP: Controlling System. This initiative aims to optimize material usage planning for greater efficiency. Following the completion of the pilot phase, the company plans to progressively implement the SAP Controlling System across its operations to enhance material usage planning and efficiency.
Integrating Life Cycle Assessment (LCA) in Product and System Design
CH. Karnchang employs Life Cycle Assessment (LCA) as a key tool to assess and manage environmental impacts across the full life cycle of construction materials and systems. LCA results are used to support material selection, construction planning, and waste management decisions, with the objective of reducing resource consumption, energy use, and environmental emissions.
Target
In 2024, construction began on the Nan City Art and Cultural Center and the Eastern Lanna Art and Cultural Learning Center, with a strong focus on sustainable development. The project prioritizes both social and environmental aspects, particularly by incorporating a designated percentage of recycled and locally sourced materials.
| Key Performance Indicators (KPIs) / Goals | Performance Results for 2025 | Certification |
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CH. Karnchang has successfully met the specified benchmarks and targets outlined in the procurement contract by undergoing verification through the Material Checklist. Additionally, materials are inspected for compliance with environmental standards, including:
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Performance and Results
Changes in material consumption during the reporting period reflect overall project progress and construction intensity. Material usage is monitored against planned quantities to control losses, optimize procurement, and minimize construction waste.
