Static electricity in one form or another is a phenomenon of nature and often results in electrostatic discharges that can cause fires and explosions. The term static describes electricity that is trapped on a body that is said to be charged. While most of the expertise to reduce these hazards is based on research, a great deal is based on industry experience as related to safety precautions used for handling petroleum liquids. However, the same issues apply across a broad range of applications in many different industries, from Oil & Gas, Bulk Chemicals, Paints and Solvents to Food and Pharmaceuticals.
Anytime liquids, gases and dry-bulk are transferred in bulk through loading arms and hoses from a fixed point to a mobile vessel (Road, Rail, Drum, IBC, FIBC), an electrostatic voltage will be generated, often at dangerously high levels.
The generation of electric charges, their accumulation on material, and the uncontrolled process of dissipating these accumulated charges cause static electricity hazards. Sparks from static electricity are a significant source of ignition. Electrostatic charges generated through the transfer of flour, sugar and other dry-bulk products – even through “dust clouds” – need to be better controlled. Although the magnitude and polarity of charge is usually difficult to predict in discrete particulate matter, charge generation should always be expected whenever powder particles come into contact with another surface.
It occurs, for example, during mixing, grinding, sieving, pouring and pneumatic transfer. The chemical compositions, temperature, humidity, particle size, roughness of contacting surfaces are some of the influencing factors that determine charging characteristics and potential hazards. The LOGIC controller is the answer to these problems – utilizing the latest technology to remove this hazard from your operations.