Grounding: Key Rules and Regulations for ESD Footwear and Flooring Systems

Why ESD Footwear Is Essential in ESD Protected Areas (EPAs)

Key Qualification Requirements for Compliance and Safety

To ensure effective static control in ESD Protected Areas (EPAs), ESD footwear must meet strict qualification standards. According to ANSI/ESD STM97.1, the total resistance from the footwear in combination with the wearer must be less than 1.0 × 10⁹ ohms. Additionally, peak body voltage should remain below 100 volts, as outlined in ANSI/ESD STM97.2. For optimal protection, ESD footwear—whether heel straps, toe grounders, or ESD shoes—must be worn on both feet, per ANSI/ESD TR20.20-2016, Section 12.2.1. Daily verification is also critical: users are required to test their footwear grounding each day before entering any EPA (ANSI/ESD TR20.20-2016, Section 12.4). Meeting these standards not only ensures compliance but helps protect sensitive electronic components from electrostatic damage.

Essential ESD Test Equipment for Compliance

Surface Resistance Meters

Measures resistance point-to-point (Rtt) and resistance-to-ground (Rtg) of worksurfaces, flooring systems, garments, packaging, and other materials in accordance with ESD Association documents: ESD TR53, ANSI/ESD S4.1, ANSI/ESD S7.1, ANSI/ESD STM97.1 and others.

Body Voltage Meters

Measures voltage (Human Body Voltage – HBV) on a person in combination with ESD footwear and flooring materials (both pre and post installation) according to IEC 61340-4-5 and ANSI/ESD STM97.2.

Periodic Testers

Measures the grounding path resistance of banana jacks and other equipment.

ESD Association Standards

Standards and specifications provide the guidance companies need to make their ESD control programs thrive. These include standards, ESD standard test methods, ESD standard practices, technical reports, and informational advisory documents.

Conclusion

Maintaining a safe and compliant ESD Protected Area requires more than just awareness—it demands strict adherence to established standards and the use of reliable ESD control tools. ESD footwear, when properly qualified, tested, and used alongside compliant flooring systems, forms a critical barrier against electrostatic damage.

By integrating regular testing with equipment like surface resistance meters and body voltage meters and aligning practices with ANSI/ESD and IEC standards, organizations can significantly reduce the risk of costly component failures. In the end, staying grounded—both literally and in terms of compliance—is key to safeguarding sensitive electronics and ensuring long-term operational success.

Compliments of Desco