The imminent publication of IEC 60079-0 Edition 8 will likely mark a significant development for the explosion-protection industry, with expected refinements reflecting both evolving industrial realities and lessons learned from the practical application of Edition 7. For manufacturers, certification bodies, and end users alike, the updated standard will represent more than a routine revision; signalling a broader industry shift toward greater transparency, more robust verification requirements and improved clarity in the communication of safety-critical information. 

At its core, Edition 8 is expected to address the increasing complexity of hazardous area operations. Modern industrial environments are now shaped by wider global temperature variations, the continued growth of portable electronic equipment and the integration of digital technologies into plant infrastructure. The revised standard will likely respond directly to these changes while also resolving a number of technical ambiguities identified in the previous edition. 

One of the most noticeable expected changes is the revised approach to ambient temperature marking. Under Edition 7, equipment operating within the commonly accepted range of -20 °C to +40 °C often required no specific temperature marking. Edition 8 may remove this assumption entirely by requiring manufacturers to state the exact rated ambient temperature range on all certified equipment. Although seemingly straightforward, this amendment will introduce a much higher level of clarity for operators and maintenance teams working across diverse environmental conditions, from arctic installations to high-temperature process environments. 

The standard will place greater emphasis on verification through testing rather than reliance on procedural controls. This is particularly evident in the treatment of portable equipment. Previous editions allowed certain electrostatic discharge considerations to be addressed through Specific Conditions of Use, commonly identified by an “X” suffix on certification documentation. If Edition 8 moves away from this approach, we will see transferred charge testing and maximum capacitance assessments mandatory for portable devices. The result will be a more consistent and demonstrable safety baseline supported by measured performance rather than operational caveats. 

Several of the revisions may appear relatively minor at first glance, yet they carry potentially significant engineering implications. Updated voltage ratings for batteries

and cells, for example, can directly influence the calculations associated with intrinsically safe circuits. Similarly, if ingress protection requirements are expanded, it will ensure equipment integrity is maintained even while systems are not in operation. We expect to see enclosures incorporating socket-outlets to include protective caps or equivalent safeguards to prevent the ingress of dust or moisture during periods of inactivity. 

The industry’s digital transformation will likely be addressed in Edition 8. Manufacturers should be permitted to supplement conventional product markings with QR codes and machine-readable codes, providing improved access to certification data, instructions and safety information. At the same time, the standard should reinforce the importance of clearly identifying equipment subject to Specific Conditions of Use, ensuring that “X” markings remain explicit and easily understood. 

For manufacturers operating in global markets, the introduction of Edition 8 will provide an opportunity to reassess existing product portfolios against revised requirements. While equipment certified to Edition 7 remains valid to that standard, a proactive review of product markings, documentation and technical assumptions will help organisations align with the latest expectations of the international hazardous area sector. In an industry where compliance, clarity and confidence are inseparable from safety, the transition to Edition 8 will be a meaningful step forward. 

Jayson Shepherd, Certification Engineer, Element 

Learn more about explosive atmosphere testing and certification with Element at

https://www.element.com/connected-technologies/explosive-atmosphere-testing-and-certification