ATEX Module F Explained

ATEX Module F is a conformity assessment procedure defined in Directive 2014/34/EU that focuses on Product Verification. Under this module, an ATEX Notified Body examines and verifies individual products or statistically selected products from a production batch to confirm that they conform to the product type approved under ATEX Module B (EU-Type Examination).

Unlike ATEX Module D and Module E, which rely on approved quality management systems, Module F emphasizes direct verification of finished products by the Notified Body before they are placed on the European market. This conformity assessment route is particularly suitable where independent verification of manufactured products is preferred over approval of the manufacturer's quality system.

This article explains what ATEX Module F is, how Product Verification works, when it is used, and how it supports compliance with Directive 2014/34/EU.

Quick Answer

What Is ATEX Module F?

ATEX Module F is one of the conformity assessment procedures established by Directive 2014/34/EU for certain categories of explosion-protected equipment. Instead of evaluating a manufacturer's quality management system, Module F requires the direct verification of finished products by an ATEX Notified Body.

The verification may involve examination and testing of every product or statistically selected products from a production batch, depending on the verification method applied and the applicable conformity assessment requirements.

The objective is to confirm that products released to the market remain identical to the product type approved during the EU-Type Examination under Module B.

Why Is Module F Required?

Although the EU-Type Examination confirms that a representative product design complies with Directive 2014/34/EU, manufacturers must also demonstrate that products manufactured for commercial sale continue to match the approved type.

Module F provides this assurance through direct verification performed by an independent ATEX Notified Body.

This conformity assessment procedure helps ensure that:

• Finished products conform to the approved product type.
• Critical explosion protection characteristics are maintained.
• Independent verification is performed before products are placed on the market.
• Equipment continues to comply with Directive 2014/34/EU.

Who Performs Module F?

ATEX Module F may only be carried out by an ATEX Notified Body designated under Directive 2014/34/EU.

The manufacturer prepares the finished products for verification, while the Notified Body performs the required inspections, examinations, and testing to determine whether the products conform to the approved EU-Type Examination.

If the products satisfy the applicable requirements, the Notified Body confirms conformity in accordance with the selected verification procedure.

What Does Product Verification Include?

During Module F, the ATEX Notified Body verifies that finished equipment continues to comply with the approved product type and the applicable ATEX requirements.

Typical verification activities include:

• Visual inspection of finished products.
• Verification of explosion protection markings.
• Review of critical dimensions.
• Inspection of construction details.
• Functional testing where applicable.
• Verification of technical documentation.
• Confirmation of conformity with the approved EU-Type Examination Certificate.

The scope of verification depends on the equipment type, applicable harmonized standards, and the verification method defined for the conformity assessment.

How Does the ATEX Module F Process Work?

ATEX Module F is applied after the equipment has successfully completed the EU-Type Examination under Module B. Unlike Module D or Module E, which rely on approved quality management systems, Module F requires an ATEX Notified Body to verify the conformity of finished products before they are placed on the market.

A typical Module F conformity assessment process includes:

1. The manufacturer obtains an EU-Type Examination Certificate under Module B.
2. The manufacturer completes production of the equipment.
3. The finished products or production batches are submitted for verification.
4. An ATEX Notified Body performs inspections, examinations, and testing as required.
5. The Notified Body confirms that the products conform to the approved type.
6. Products that successfully complete verification may proceed through the applicable conformity assessment process before being placed on the European market.

This procedure provides independent confirmation that manufactured equipment remains consistent with the design approved during the EU-Type Examination.

What Does the Notified Body Verify?

During Module F, the ATEX Notified Body evaluates whether the finished products continue to conform to the approved product type described in the EU-Type Examination Certificate.

The verification typically includes:

• Inspection of explosion protection markings.
• Verification of product identification.
• Review of critical construction features.
• Dimensional verification.
• Functional testing where required.
• Inspection of safety-critical components.
• Confirmation of conformity with the approved technical documentation.
• Verification against the applicable harmonized standards.

The extent of verification depends on the equipment type, applicable standards, and the verification method defined by the conformity assessment procedure.

What Happens if a Product Fails Verification?

If a product or production batch does not satisfy the applicable ATEX requirements, the Notified Body will not confirm conformity for the affected equipment.

The manufacturer must investigate the cause of the nonconformity and implement appropriate corrective actions before the equipment can proceed through the conformity assessment process.

Corrective actions may include:

• Repair or replacement of nonconforming components.
• Additional testing.
• Review of manufacturing processes.
• Engineering modifications where necessary.
• Resubmission for verification after corrective actions have been completed.

This process helps ensure that only compliant explosion-protected equipment is placed on the European market.

Module F Compared with Module D and Module E

Although all three modules support conformity after the EU-Type Examination, they use different approaches.

Module F	Module D	Module E
Product Verification.	Production Quality Assurance.	Product Quality Assurance.
Direct verification by a Notified Body.	Approval of the production quality system.	Approval of the product quality assurance system.
Focuses on finished products.	Focuses on manufacturing processes.	Focuses on final inspection and testing.
No quality system approval required.	Requires production quality system approval.	Requires product quality assurance system approval.
Verification performed on products or production batches.	Surveillance through quality system audits.	Surveillance of final inspection and testing activities.

The appropriate conformity assessment route depends on the manufacturer's production methods, quality management capability, and the applicable requirements of Directive 2014/34/EU.

Benefits of ATEX Module F

Module F provides a conformity assessment route based on direct verification of finished equipment by an independent ATEX Notified Body.

• Independent third-party verification of finished products.
• Confirmation of conformity with the approved type.
• No requirement for approval of a quality management system.
• High confidence in product conformity.
• Support for compliance with Directive 2014/34/EU.
• Increased confidence for customers and regulatory authorities.

By independently verifying finished products before they are placed on the market, Module F helps ensure that explosion-protected equipment continues to satisfy the technical requirements established during the EU-Type Examination.

Common Misunderstandings About ATEX Module F

Module F Can Be Used Without Module B

No. Module F is intended to follow a successful EU-Type Examination under ATEX Module B. It verifies that finished products conform to the approved product type but does not replace the initial type examination.

Module F Requires an Approved Quality Management System

No. Unlike Module D and Module E, Module F does not require the manufacturer to operate an approved production or product quality assurance system. Instead, conformity is demonstrated through direct verification of finished products by an ATEX Notified Body.

Every Product Must Always Be Individually Tested

Not necessarily. Depending on the applicable conformity assessment procedure and the verification method selected by the Notified Body, verification may be performed on every individual product or on statistically selected products from a production batch.

Product Verification Removes Manufacturer Responsibility

No. The manufacturer remains responsible for ensuring that all equipment complies with Directive 2014/34/EU. The Notified Body independently verifies conformity but does not assume responsibility for product design or manufacturing.

Frequently Asked Questions (FAQ)

What is ATEX Module F?

ATEX Module F is the Product Verification conformity assessment procedure defined in Directive 2014/34/EU. It requires an ATEX Notified Body to verify that finished products conform to the product type approved during the EU-Type Examination under Module B.

Is Module F used together with Module B?

Yes. Module F is a follow-up conformity assessment procedure that relies on a valid EU-Type Examination Certificate issued under ATEX Module B.

Who performs product verification?

An ATEX Notified Body designated under Directive 2014/34/EU performs the required inspections, examinations, and testing to verify conformity with the approved product type.

Does Module F require a quality management system?

No. Unlike Module D and Module E, Module F is based on direct verification of finished products rather than approval of a quality management system.

How is Module F different from Module D and Module E?

Module F verifies finished products directly, whereas Module D evaluates the manufacturer's production quality assurance system and Module E evaluates the quality system used for final inspection and testing.

Conclusion

ATEX Module F provides a conformity assessment route based on independent product verification by an ATEX Notified Body. Following successful completion of the EU-Type Examination under Module B, finished products are inspected and, where necessary, tested to confirm that they continue to conform to the approved product type before being placed on the European market.

Unlike Module D and Module E, which rely on approved quality management systems, Module F emphasizes direct verification of finished products. This approach provides a high level of confidence that explosion-protected equipment continues to satisfy the applicable requirements of Directive 2014/34/EU.

Technical Review

References

• Directive 2014/34/EU of the European Parliament and of the Council.
• European Commission – ATEX Guidelines for Directive 2014/34/EU.
• EN IEC 60079 Series – Explosive Atmospheres.
• Blue Guide on the Implementation of EU Product Rules.
• ISO/IEC 80079 Series.