What is Intrinsic Safety (IS)? Intrinsic Safety (IS), which is shown as Ex i, is the most common way to protect instrumentation and control systems against explosions in hazardous locations. IS does not depend on containment like explosion-proof (Ex d) or purged/pressurized enclosures (Ex p). Instead, it stops ignition by making sure that the electrical … Continue reading Intrinsic Safety Protection Systems: Understanding Ex ia, Ex ib, and Ex ic