ISO 80079-34 Certification
Strengthen your manufacturing quality for explosive atmospheres with ISO 80079-34 guidance tailored to your processes and safety requirements. Start your journey today — request a personalized quote designed to support your organisation’s product quality and risk management goals.
ISO 80079-34 certification specifies the quality management system (QMS) requirements for manufacturers of Ex products—equipment and components intended for use in explosive atmospheres.
The standard ensures that Ex products are manufactured consistently in accordance with the approved type examination certificates and technical documentation. It does not certify the product design itself; instead, it confirms that the manufacturer has the necessary systems and controls to reproduce certified designs correctly during production.
ISO 80079-34 applies to both electrical and non-electrical Ex equipment, including components, assemblies, and finished products. It is commonly used as the manufacturing quality system requirement within IECEx and ATEX certification schemes.
For manufacturers in Thailand, ISO 80079-34 certification demonstrates that the organization has a controlled manufacturing system capable of maintaining conformity with Ex certification requirements on an ongoing basis.
Why a Manufacturing Quality System Is Mandatory for Ex Products in Thailand
Ex products are used in hazardous areas where explosive atmospheres may be present, such as oil and gas facilities, chemical plants, refineries, and industrial sites. In these environments, manufacturing deviations—no matter how small—can invalidate certification.
Manufacturers in Thailand often deal with:
- Complex Ex certification requirements
- Tight tolerances for Ex-critical characteristics
- Multiple suppliers and subcontractors
- Ongoing surveillance audits from certification bodies
Without a dedicated manufacturing quality system, it becomes difficult to ensure that every Ex product leaving the factory matches the certified design exactly.
ISO 80079-34 provides the structured framework needed to control production, documentation, inspections, testing, and change management. This is why certification bodies require ISO 80079-34 (or an equivalent system) as a condition for Ex product certification and continued approval.
Who Needs ISO 80079-34 Certification in Thailand?
ISO 80079-34 certification is intended for organizations in Thailand that manufacture Ex products or Ex components for use in explosive atmospheres.
This includes:
- Manufacturers of electrical Ex equipment
- Manufacturers of non-electrical / mechanical Ex equipment
- Assemblers of Ex systems or Ex components
- OEMs producing Ex equipment under licensed or approved designs
- Manufacturers supplying Ex products for IECEx or ATEX certification
Industries commonly requiring ISO 80079-34-certified manufacturers include:
- Oil and gas
- Petrochemical and chemical processing
- Power generation
- Mining
- Industrial manufacturing with hazardous areas
Any organization in Thailand that wishes to obtain or maintain Ex product certification will require ISO 80079-34 as part of its manufacturing approval process.
ISO 80079-34 Requirements for Ex Product Manufacture in Line With Certificates
ISO 80079-34 sets out specific requirements to ensure Ex products are manufactured exactly in line with their certificates.
Key requirements include:
- Control of Ex-critical characteristics
- Use of approved materials and components only
- Documented manufacturing and assembly instructions
- Control of production equipment and processes
- Inspection and testing at defined production stages
- Competence and training of personnel involved in Ex manufacturing
- Control of changes affecting certified designs
The standard places strong emphasis on preventing unauthorized changes. Any modification that could affect Ex protection must be assessed and approved before implementation.
These requirements ensure that the manufactured Ex product remains compliant with its certification throughout serial production.
Managing Ex Production Controls, Documentation, and Traceability Through ISO 80079-34
One of the core objectives of ISO 80079-34 is to ensure full traceability and control across Ex product manufacturing.
The standard requires manufacturers to maintain:
- Controlled technical documentation
- Records of inspections and tests
- Identification and traceability of products and components
- Supplier control and evaluation
- Procedures for handling non-conforming products
This level of control supports ongoing surveillance audits conducted by certification bodies and helps manufacturers demonstrate continued compliance.
For manufacturers in Thailand, ISO 80079-34 reduces the risk of certification suspension, rejected products, and audit findings by ensuring production activities remain fully aligned with certification requirements.
Frequently Asked Questions – ISO 80079-34 Certification in Thailand
Is ISO 80079-34 a product certification standard?
No. ISO 80079-34 is a manufacturing quality management system standard. Product certification (IECEx or ATEX) is handled separately.
Why is ISO 80079-34 required even if the product is already certified?
Product certification approves the design. ISO 80079-34 ensures the certified design is manufactured correctly and consistently.
Does ISO 80079-34 apply to both electrical and non-electrical Ex products?
Yes. The standard applies to all Ex products, including electrical and non-electrical equipment.
Is ISO 9001 enough for Ex manufacturing?
No. ISO 9001 does not cover Ex-specific manufacturing controls. ISO 80079-34 includes additional requirements essential for Ex conformity.
Can certification be suspended if ISO 80079-34 requirements are not maintained?
Yes. Failure to maintain ISO 80079-34 compliance can result in suspension or withdrawal of Ex manufacturing approval.