Part 1 set out why ATEX should be treated as the foundation of a broader compliance system, not a product checkbox. Part 2 looks at where that system breaks down, and what it takes to make it work.
The Gap Between Certification and Operation
One of the most common failures in hazardous area compliance is not a bad certificate, but rather a good certificate applied badly.
Zone classification drawings and permit-to-work systems are often maintained by different teams, on different timelines, and never formally linked. The drawing says Zone 1. The permit was written for a previous configuration. The technician follows the permit, not the drawing. This is where compliance gaps become safety gaps, not because the equipment was wrong, but because the controls around it were never connected.
Closing this gap requires zone drawings linked to permit-to-work controls, with a defined trigger for review whenever either changes. A competent workforce, evidenced through schemes such as CompEx, is not a supplementary credential. It is the mechanism that makes every other control meaningful.
When the Certificate Leaves the Factory
For manufacturers, ATEX certification is awarded against a defined design. Maintaining it over the product lifecycle is a separate obligation, governed by quality assurance schemes most end users never see.
Under QAN and QAR arrangements, manufacturers carry ongoing responsibility for ensuring every unit continues to conform to its certified design. EN ISO/IEC 80079-34 defines what this requires: change control, component traceability, internal audits, and a formal process for assessing whether any modification affects the basis of certification.
When these systems work, the certificate remains meaningful throughout the product's life. When treated as paperwork, the gap between certified design and actual product quietly widens, particularly in control panels, skid-mounted systems, and complex enclosures. This is where many failures start: an engineering change is raised, the modification is made, and nobody checks whether the original Ex assessment still holds.
What Insurers and Auditors Are Now Asking For
Hazardous area compliance is increasingly visible beyond the engineering team. Insurers and auditors are not only looking for Ex certificates, they want evidence of joined-up governance: inspection histories, management-of-change (MOC) records, and clear links between zone classification, maintenance, and environmental monitoring.
A flammable vapour release that creates or extends a Zone 2 atmosphere may affect ATEX zoning, DSEAR risk assessment, environmental controls, and maintenance priorities simultaneously. Organisations managing these as separate files struggle to demonstrate control when any one is challenged. The pattern auditors repeatedly find is not non-compliant equipment. It is disconnected systems.
What Good Looks Like
The answer is not more certification. It is better connection between the systems that already exist.
That means digital asset registers where every item of Ex equipment carries its certificate, zone location, inspection history, and next inspection date. It means change control that flags ATEX implications automatically. It means inspection schedules aligned with DSEAR review cycles and IEC 60079-17 requirements.
The barrier is rarely technology. It is the organisational decision to treat compliance not as a file to be maintained, but as a system to be managed.
