Types of Protection Techniques Data Table Method Symbol Type of Protection Exclusion Ex tD Dust-excluding ignition proof Ex m Encapsulation Ex n Non-sparking (hermetically sealed devices, sealed devices and restricted breathing) Ex p Pressurized enclosure/Rooms Ex q Sand-filled (powder filling) Explosion containment Ex d Flameproof enclosure Energy Limitation Ex i Intrinsic safety Dilution Ex v Ventilation … Continue reading Explosion Protection Techniques