The electrification of non-conductive and non-metal material intended for use in potentially explosive atmosphere

Electrostatic discharges from electrified non-conductive, non-metal materials are able to create an explosion hazard. The paper discusses a model of the spark- gap being an instrument used in assessing the ignition-producing ability. There have been presented the theoretical values of discharge energy that may accompany various types of electrostatic discharges. Presented in the photographs are the phases of ignition of test methane explosion mixture inside the spark-gap chamber that has occurred in consequence of electrostatic discharge accompanying the process of discharging the electrified non-conductive, non-metal material.