Electrical equipment and circuits incapable of generating energy sufficient to present a hazard in a flammable area.
Equipment or wiring which is incapable of releasing sufficient electrical or thermal energy to ignite a hazardous mixture of hydrocarbon vapors and air. In such equipment, the electrical energy is limited so that it cannot generate a spark or otherwise ignite a flammable mixture.
As defined by the cellular industry: In short is used to describe a mobile phone that is safe for use around flammable materials. Example would be a coal miner could use the phone without fear of starting a fire. These phones are only authorized by a small number of service centers for repair due to strict FCC regulations. An example phone would be an i355.
A device that cannot produce any spark or thermal effects under normal or abnormal conditions that would ignite a specified gas and/or dust mixture.
A device, instrument or component that will not produce any spark or thermal effects under any conditions that are normal or abnormal that will ignite a specified gas mixture. Electrical and thermal energy limits are at levels incapable of causing ignition. It is common practice to use external barriers with intrinsically safe installations.
Not capable of igniting a flammable atmosphere under both normal and “fault” conditions.
An instrument which will not produce any spark or thermal effects under normal or abnormal conditions that will ignite a specified gas mixture.
limits electrical/thermal energy to levels incapable of causing ignition. External barriers are required.
Equipment and wiring which is incapable of releasing sufficient electrical or thermal energy under normal or abnormal conditions to cause ignition of a specific hazardous atmospheric mixture or hazardous layer.
A system that is incapable of releasing sufficient electrical or thermal energy under any condition to cause ignition of a specific hazardous mixture in the atmosphere, even in its most ignitable concentration.
Intrinsically safe is an attribute applied to electrical equipment that is designated for use in explosion-prone areas.
