EN 1149 5
Static electricity
Back to overviewProtection against explosion hazards: EN 1149-5 standard for antistatic workwear.
EN 1149-5 is a European standard for protective clothing that prevents electrostatic charges from building up and discharging in sparks. In potentially explosive environments, such as ATEX zones, these sparks can lead to life-threatening situations.
Workwear with EN 1149-5 certification significantly reduces this risk and is essential for working safely in environments where there is a risk of explosion.
Symbol and technical requirements of EN 1149-5
Clothing that complies with this standard can be recognized by the lightning bolt symbol with the designation NEN EN 1149-5.
The standard stipulates that the clothing:
- Is made of electrically conductive materials
- Is worn correctly as part of a fully grounded system (e.g., with conductive safety shoes)
- Is regularly tested and maintained to ensure proper functioning
Combination with flame-retardant standards
Antistatic clothing with EN 1149-5 certification is only accepted in combination with flame-retardant clothing, as certified under EN 531 or EN ISO 11612. This is important because explosion-hazardous environments often also present a fire hazard.
Please note: this clothing does not offer protection in oxygen-rich environments and does not protect against mains voltage.
Where do you use EN 1149-5 workwear?
The standard is for employees who work in environments with an increased risk of explosion or where electrostatic discharges pose serious risks, as they work with flammable substances, vapors, or dust.
Common sectors:
- Petrochemical
- Oil and gas industry
- Laboratories
- Food industry (such as flour processing)
- Storage and transport of flammable substances
In many cases, these working environments are subject to the ATEX directives, where antistatic clothing is mandatory.
Test methods of EN 1149
The fabric of the clothing must comply with EN 1149-1, EN 1149-2, or EN 1149-3. The entire garment can also be tested according to EN 1149-4 (under development).
- EN 1149-1: determines the surface resistance. Requirements: ≤ 2.5 * 10⁹ Ω. Conductivity can be achieved through homogeneous material or through a grid of conductive threads (max. 10 x 10 mm).
- EN 1149-3: measures how quickly the electrostatic charge dissipates through the air. Requirements: t50% < 4 sec or S > 0.2.
Performance and design requirements of the standard
The EN 1149-5 standard sets additional requirements for the design and use of the clothing:
- Model must comply with EN ISO 13688 (formerly EN 340)
- Metal parts (such as buttons) must be covered
- Non-conductive elements such as reflective strips and emblems are permitted if they are securely attached
- Conductive footwear is mandatory
- The outside of the fabric must be in contact with the skin (even in winter clothing)
- Clothing must also comply with EN 531
- Combination with flame-retardant clothing is mandatory
ATEX: directive for explosion hazards
ATEX is not a clothing standard, but a European directive for companies where there is a risk of explosion. This directive sets requirements for installations, equipment, and personal protective equipment (PPE).
Clothing that complies with EN 1149-5 perfectly meets these requirements and is suitable for use in ATEX zones.
Follow our EN 1149-5 training for antistatic workwear
In an ATEX zone, working without mistakes is not an option. Antistatic clothing that complies with EN 1149-5 is mandatory. But did you know that incorrect use or maintenance can still pose risks?
During our practical training, you will not only learn what the standard entails, but above all how to apply it in your working environment. After this training, your team will know exactly what is needed to work safely, responsibly, and in accordance with the standard.