Static electricity is the retained charge on a conductor. All the energy stored on the conductor can be released in one arc or ‘spark’ to catastrophic effect. To retain charge on a conductor, it has to be insulated from other conductors and insulated from earth by means of a non-conductor. Sparking, due to static electricity, can be avoided by using recognised earthing and equipotential bonding techniques.Static electricity is generated in many ways, including:
• the flow of liquids
• the mixing of powders
• the production of sprays
• the contact and separation of solids
Static electricity causes problems in many industries, such as chemical, pharmaceutical, petroleum, etc. Static electricity-discharges from a person can be minimized by providing an adequately-conducting path between the person and earth through their footwear and the floor. BS 7193 gives requirements for two types of rubber footwear. Specifications for conducting-flooring materials and for such floors after laying are given in BS 2050 and BS 3187. The phenomena that is Static Electricity is covered in great depth in two parts of BS 5958: 1991, Code of practice for Control of undesirable static electricity: Part 1: General considerations, and Part 2:Recommendations for particular industrial situations.
Atex Certified Static Grounding Clamp
In order to control the static electricity, it is very essential to use static grounding clamp and it should have ATEX approvals, that should be tested (electrically and mechanically) and certified to be ensured that it can dissipate the static charges from the equipment in hazardous area in order to protect the personnel and equipment from electrostatic ignition. Static grounding clamp should be capable of using on coatings, any deposits and rust to be ensured a proper grounding connection to equipment.