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It is well known that hazardous locations pose risks because of the presence of ignitable gas, dusts, or fibres. For this reason, many safety Standards and procedures govern electrical devices that are to be installed in those locations, to ensure that they do not become a source of ignition. Non-electrical equipment may also be sources of ignition or explosion. Mechanical equipment, because of its moving parts, can generate sparks and hot surfaces. Mechanical failure can cause bearings to overheat, for example. Friction can cause elevated temperatures of mechanical devices, during even normal operation.
In this animation we will discuss the ways in which the risks related to non-electrical devices in hazardous locations are identified, assessed, and minimized in order for the devices to be certified within the Zone classification system.
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