In industrial environments classified as ATEX, risk control is an absolute priority. Among these risks, electrostatic discharges are a silent but formidable threat. Often invisible to the naked eye, they can be enough to trigger an explosion in an atmosphere charged with flammable gases, vapors or dusts. Understanding the mechanisms of electrostatic discharges and fitting appropriate electrostatic protection is therefore essential to prevent accidents.
Understanding electrostatic risks in ATEX zones
An electrostatic discharge occurs whenan electrical charge accumulated on a surface is suddenly transferred to another object, causing a spark. In an industrial context, this simple spark can have dramatic consequences, especially in ATEX zones, where the slightest source of ignition can cause an explosion. These discharges are all the more dreaded because they can occur at any time, often without anyone being immediately aware of it. Hence the importance of rigorous electrostatic protection, right from the design stage.
Accidents in the petrochemical and pharmaceutical industries are a regular reminder of the need for reinforced preventive measures. When an operator handles a flammable liquid, or when a flow of particles generates friction in a pipe, an electrostatic charge can build up and cause a spark on contact with metal equipment or a person. These risks can be considerably reduced by installing a suitable device.
ATEX regulations and associated standards
To manage these high-risk environments, European ATEX directives directives impose strict obligations on manufacturers. Directive 2014/34/EU concerns equipment used in explosive atmospheres, while Directive 1999/92/EC defines minimum requirements forworkplace safety . These texts are accompanied by technical standards, such as IEC/TS 60079-32-1, which provides detailed guidelines on the electrostatic protection of installations.
These legal requirements are not confined to equipment, but also call for a comprehensive risk assessment, staff training and the implementation of regular control procedures. ADF Systèmes helps companies to comply with these requirements, providing expertise in preventive measures and offering tailor-made solutions adapted to the specific constraints of each site.
Sources of electrostatic charge in industry
Electrostatic charges often originate in trivial situations: the transfer of liquids between two tanks, the movement of bulk materials, the use of non-conductive pipes or plastic coatings. These situations, if not properly anticipated, can generate dangerous accumulations of charge. Even the simple act of walking on an insulating floor can be enough to create a discharge if the operator is not wearing the right equipment.
This is where electrostatic protection comes into its own. It begins with precise identification of areas and processes at risk. Then it’s a matter of understanding how these charges can form, so as to better neutralize them. A proactive approach helps prevent discharges from becoming a trigger for a serious incident.
Good electrostatic protection practices
Effective electrostatic protection is based on a set of best practices. It is crucial toensure reliable earthing of all conductive equipment, as well as of operators, using suitable antistatic devices. Floor coverings, work clothing, tools and packaging must all be carefully selected to limit charge generation.
Controlling ambient humidity also helps reduce risks, as doesappropriate ventilation in sensitive areas. But technology alone is not enough. Ongoing team training, awareness-raising and the adoption of precise protocols are just as decisive. ADF Systèmes offers tailor-made support to assess existing procedures, recommend concrete improvements and install the equipment required for optimum safety.
Electrostatic discharge is an underestimated but very real risk in ATEX zones. A single spark can be enough to cause an explosion. This is why effective electrostatic protection is essential to ensure the safety of installations, operators and the environment. Thanks to its expertise and tried-and-tested technical solutions, ADF Systèmes supports manufacturers in preventing these invisible but critical risks. To take your safety initiative a step further, don’t hesitate to call on our teams for a personalized diagnosis.
