Certified for the
zone you're in.

Continuous presence of explosive gas atmosphere. Applies inside vessels, pipework. Requires Category 1G equipment.

Likely explosive gas atmosphere in normal operation. Most common in O&G processing areas. Requires Category 2G (Ex e, Ex d, Ex ia, Ex s).

Not likely in normal operation; only briefly if fault occurs. Permits Category 3G, including Ex nR restricted breathing enclosures.

Likely combustible dust atmosphere in normal operation. Food, chemical, pharmaceutical. Requires Category 2D (Ex tb, Ex mb).

Combustible dust only under abnormal conditions, short duration. Permits Category 3D enclosures.

Eliminates arcs, sparks and excessive temperatures in normal operation through design measures: improved insulation clearances, robust terminals, anti-loosening fasteners. The most common ATEX protection method for terminal boxes and junction boxes.

The enclosure can contain an internal explosion and prevent flame propagation to the external atmosphere. Characterised by precisely machined flange gaps. Used where sparking internal components cannot be avoided.

Limits electrical energy in the circuit below the minimum ignition energy of the hazardous atmosphere — even under fault conditions. The only method suitable for Zone 0. Requires certified associated apparatus (Zener barriers, galvanic isolators).

A protection concept evaluated on a case-by-case basis by a Notified Body against IEC 60079-33. Used where standard protection methods are not applicable or where a combination of protection techniques is required to meet the ATEX Essential Health and Safety Requirements.

Limits the rate of gas ingress to the enclosure, preventing an explosive atmosphere forming inside. Simpler and lower-cost than Ex e for Zone 2 applications where a reduced degree of protection is acceptable.

Prevents dust from entering the enclosure and accumulating on surfaces where it could ignite. Temperature classification applies to external surfaces as well as internal. Used in Zone 21 and Zone 22 dust environments.

Molybdenum-enhanced austenitic grade with superior chloride resistance. Standard for marine, offshore and coastal chemical environments. Available in electropolished or mill finish. Satin-brushed to order.

General-purpose austenitic stainless. Lower cost than 316 where chloride exposure is limited. Commonly specified for food and pharmaceutical environments with caustic cleaning. Same forming and welding as 316.

Hot-rolled and cold-rolled mild steel for protected environments. Powder-coated to RAL colour of choice. Lower cost where stainless or GRP is not required by the environment.

Halogen-free glass-reinforced polyester with excellent chemical resistance. Non-magnetic, lightweight, non-conductive. Specified where stainless is not suitable — aggressive acids, coastal brine, RF-transparent applications.

Onshore, offshore, FPSO. Zone 1 and Zone 2 enclosures for instrumentation, control and power distribution. North Sea and international project experience.

Marine-grade 316L stainless throughout. Drilling rigs, dredgers, hybrid ferry programmes. DNV and Lloyd's Register project support on request.

Refineries, chemical blending and storage. Corrosion-resistant materials, full ATEX paperwork, DSEAR compliance documentation available.

Pumping stations, water treatment, biogas. Zone 21 and Zone 22 dust environments. GRP and stainless options for external and wet-area installations.