IECEx stands for the International Electrotechnical Commission System for Certification to Standards Relating to Equipment for Use in Explosive Atmospheres. It is a global certification system for equipment used in explosive atmospheres, such as those found in oil and gas, chemical processing, mining, and other industries where flammable gases, vapors, and combustible dust may be present.

The IECEx certification system ensures that equipment used in explosive atmospheres is designed, manufactured, and installed in compliance with international safety standards. The procedure involves testing and assessing equipment by independent third-party bodies, known as IECEx Certification Bodies (ExCBs), to verify that it meets the requirements of the applicable IECEx standards.

IECEx certification covers various equipment, including electrical and non-electrical equipment, and includes multiple protection techniques, such as flameproof, intrinsically safe, encapsulation, etc.

Having IECEx certification for equipment is essential for ensuring safety in hazardous environments and compliance with international standards. It helps prevent accidents and assures regulatory bodies, customers, and end-users that the equipment is safe and reliable for use in explosive atmospheres