Hazardous-area protection in the energy and process industries requires more than simply complying with ATEX and IECEx standards. Engineers must consider ignition risks, operating conditions, maintenance requirements, system integration and long-term reliability.
Three main protection methods are commonly used:
- Flameproof (Ex d): Contains an internal explosion and prevents flames from reaching the surrounding atmosphere.
- Intrinsic safety (Ex i): Limits electrical energy to prevent sparks or heat from igniting flammable substances.
- Increased safety (Ex e): Prevents sparks, arcs and excessive temperatures through robust equipment design.
The article also highlights the benefits of non-electrical pneumatic technologies, such as membrane air dryers and nitrogen generators. By eliminating electrical ignition sources at the point of use, these solutions can improve safety, reduce maintenance needs and provide reliable operation in remote or hazardous environments.
In addition, equipment must be designed to withstand challenging conditions, including high temperatures, corrosion, moisture, vibration and contamination. Material selection, effective filtration, appropriate heat management and compatibility with existing control systems are essential to maintaining safety and reliability throughout the equipment’s lifecycle.
In conclusion, ATEX/IECEx certification is essential but represents only the starting point. The best engineering approach combines appropriate protection methods, reduced ignition risks, durable materials and manageable maintenance requirements. Parker Hannifin supports this approach through certified electrical components, corrosion-resistant solutions, membrane air dryers and nitrogen generation technologies.
The ultimate objective is to design systems that are not only compliant, but also safer, more reliable, easier to maintain and more cost-effective over their entire service life.
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