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Newson Gale: Static Electricity Hazards – Dust Cloud Ignition caused by Static Electricity

This case study investigates the factors behind the ignition of a combustible dust cloud during a manual powder processing operation. In this example a process operator was tasked with manually tipping approximately 18 kg (40 lbs) of powder from a plastic drum, constructed from polyethylene, into a metal process vessel. The plastic drum contained a combustible powder that had a minimum ignition energy of 12 milli-joules. A metal chime was positioned around the circumference of the top of the plastic drum to provide it with impact protection from daily usage in the plant. Continue reading Newson Gale: Static Electricity Hazards – Dust Cloud Ignition caused by Static Electricity