B.A.S.S. (Belgium's-A-StaticScience) * ESD prevention clearly distinguish the difference between an ESD work shoe and an ESD Safety Shoe. ESD shoes, to whom belong ESD Clogs, have an electrostatically dissipative conductive shoe sole, popularly known as antistatic shoes (which is not the same, incorrectly). Safety Shoes are classed as ESD safe shoes when the resistance value of the system person-shoe-floor is below 3,5 x 10^7 resp. 35 MOhm according to EN 61340-5-1.
INTERNATIONAL STANDARD-ESD IEC 61340-5-1 Edition 1.0 2007-08
IEC 61340-4-3, Electrostatics – Part 4-3: Standard test methods for specific applications : Footwear
IEC 61340-4-5, Electrostatics – Part 4-5: Standard test methods for specific applications : Methods for characterizing the electrostatic protection of footwear and flooring in combination with a person.
5.3.2 Personnel grounding
For standing operations, personnel can be grounded via a wrist strap system or by a flooringfootwear system. When a flooring-footwear system is used, either of the two following conditions shall be met:
A.2 Measurement procedure for ESD-footwear testing
The operator shall stand with one foot on the conductive footwear electrode. The hand contact plate shall be pressed to verify that the person/footwear system resistance is within acceptable parameters (see Figure A.2). The test shall be repeated for the other foot. The test apparatus can be an integrated, commercially available tester or other instrumentation that is capable of measuring resistance from 5,0x104 Ω to at least 1,0x108 Ω. The tester open-circuit voltage is typically between 9 V d.c.and 100 V d.c.
Categories ESD Safe Working Shoes:
Warning:
ESD shoes are not suitable for electricians respectively when working on sources with electric voltage.
